WorldWideScience

Sample records for bioclimatic design-study case

  1. Bioclimatism in vernacular architecture

    OpenAIRE

    Coch Roura, Helena

    1998-01-01

    Any analysis of the role played by energy in architecture is faced with serious limitations due to the lack of studies in the architectural bibliography, especially studies of popular architecture. An awareness of these limitations will allow us to understand better why architects have paid little attention to the interaction of form and energy, and to the bioclimatic approach in contemporary architecture in general. The first limitation stems from the very essence of bioclimatic analysis; en...

  2. Bioclimatic Architecture; Arquitectura Bioclimatica

    Energy Technology Data Exchange (ETDEWEB)

    Rubenak, Joseph C. [A.G.I.S.A., Mexico D.F. (Mexico)

    2005-07-01

    The idea of the Bioclimatic Architecture comes from the term used by the Olgyay brothers, to emphasize the relations and connections between life, the climate and the bonds of these natural factors with the design. These base a method so that the development of the design responds in terms of function and comfort to the climatic implications that give context to the architectonic projects. The central objective is the creation of expressive spaces and aesthetically harmonic whose characteristics privilege the function of the building with optimal conditions for physical and psychological comfort for those who live, operate or use the building. [Spanish] La idea de la arquitectura bioclimatica proviene del termino utilizado por los hermanos Olgyay, para resaltar las relaciones y enlaces entre la vida, el clima y los vinculos de estos factores naturales con el diseno. Estos fundamentan un metodo para que el desarrollo del diseno responda en terminos de funcion y confort a las implicaciones climaticas que dan contexto a los proyectos arquitectonicos. El objetivo central es la creacion de espacios expresivos y esteticamente armonicos cuyas caracteristicas privilegien la funcion del inmueble con optimas condiciones de comodidad fisica y psicologica para quienes viven, operan o utilizan el edificio.

  3. Beyond the bioclimatic

    International Nuclear Information System (INIS)

    Central to the bioclimatic skyscraper design of architect Ken Yeang has been the adoption of passive energy approaches to achieve both economic and economic and ecological benefits. Such as approach sough to lower energy consumption by utilizing for example natural ventilation for thermal cooling and then supplementing that with active or mechanical means to achieve the required thermal comfort for building occupants. In addition, building occupants also expected and enhanced experience, an experience that Yeang created using: planting and vegetation, deep and high sky gardens and courtyards, facades that acted as buffers and filters rather than sealing the outside, the use of wind for natural ventilation. This paper focuses on the natural ventilation component of this approach and reviews the techniques that Yeang suggests (such as core location, building orientation, air wells, sun shades and solar orientation) and reviews their impact on the natural ventilation potential of the building. The development of new tools now allows designers to quantify the impact of such measures and thus presents the opportunity for designers to create better quality buildings that are not only healthy for occupants, economic for building owners but also inspirational for all

  4. Systems to establish bioclimatic analogies to predict the area of adaptability of plant species to new environments: The case of Moringa oleifera Lam. in Chile

    Directory of Open Access Journals (Sweden)

    Fernando Santibañez

    2015-12-01

    Full Text Available Adaptability of a species to new territories is generally assessed by costly trial and error in situ experiments distributed throughout different agroclimatic environments. Nowadays climatic data are available to allow the construction of climatic maps based on data provided through world or local networks of climatic weather stations. The objective of this work was to establish a bioclimatic protocol, based on current and available sources of climate information, to make rapid surveys of suitability for plant species in a given environment. Moringa oleifera Lam. species, native from India, was chosen considering its rusticity and the increasing interest on this species due to its multiple uses, nutritional value, and medicinal properties. The first phase of this work was a compilation of data from climatic downscaling (WorldClim, University of East Anglia database (CRU, FAO database, and an historic datasets from Chilean meteorological stations. This information was used to test two different models to compare bioclimatic profiles, considering relevant climatic variables for plant adaptation: maximum and minimum temperatures, accumulated degree days, frost regime, and air humidity. The first approach, based on climatic analogy, was to compare each of these variables between Chilean and foreign localities, and the second, based on bioclimatic suitability, focus on the degree of meeting the minimum bioclimatic requirements by the species in each locality. This paper provides some tools to make this kind of comparisons. Both approaches were tested using M. oleifera as target. Both approaches were complementary and prove to be useful for identifying potential areas where the species could be cultivated. The use of these approaches suggested the existence of some bioclimatic suitability for this species in the coastal areas with mild winters and frosts, from 27° to 37° S lat.

  5. Index Bioclimatic "Wind-Chill"

    Directory of Open Access Journals (Sweden)

    Teodoreanu Elena

    2015-05-01

    Full Text Available This paper presents an important bioclimatic index which shows the influence of wind on the human body thermoregulation. When the air temperature is high, the wind increases thermal comfort. But more important for the body is the wind when the air temperature is low. When the air temperature is lower and wind speed higher, the human body is threatening to freeze faster. Cold wind index is used in Canada, USA, Russia (temperature "equivalent" to the facial skin etc., in the weather forecast every day in the cold season. The index can be used and for bioclimatic regionalization, in the form of skin temperature index.

  6. Systems to establish bioclimatic analogies to predict the area of adaptability of plant species to new environments: The case of Moringa oleifera Lam. in Chile

    OpenAIRE

    Fernando Santibañez; Javier Mendoza; Carlos Muñoz; Carolina Caroca; Paula Santibañez; Loreto Prat

    2015-01-01

    Adaptability of a species to new territories is generally assessed by costly trial and error in situ experiments distributed throughout different agroclimatic environments. Nowadays climatic data are available to allow the construction of climatic maps based on data provided through world or local networks of climatic weather stations. The objective of this work was to establish a bioclimatic protocol, based on current and available sources of climate information, to make rapid surveys of sui...

  7. Phyloclimatic modeling: combining phylogenetics and bioclimatic modeling.

    Science.gov (United States)

    Yesson, C; Culham, A

    2006-10-01

    We investigate the impact of past climates on plant diversification by tracking the "footprint" of climate change on a phylogenetic tree. Diversity within the cosmopolitan carnivorous plant genus Drosera (Droseraceae) is focused within Mediterranean climate regions. We explore whether this diversity is temporally linked to Mediterranean-type climatic shifts of the mid-Miocene and whether climate preferences are conservative over phylogenetic timescales. Phyloclimatic modeling combines environmental niche (bioclimatic) modeling with phylogenetics in order to study evolutionary patterns in relation to climate change. We present the largest and most complete such example to date using Drosera. The bioclimatic models of extant species demonstrate clear phylogenetic patterns; this is particularly evident for the tuberous sundews from southwestern Australia (subgenus Ergaleium). We employ a method for establishing confidence intervals of node ages on a phylogeny using replicates from a Bayesian phylogenetic analysis. This chronogram shows that many clades, including subgenus Ergaleium and section Bryastrum, diversified during the establishment of the Mediterranean-type climate. Ancestral reconstructions of bioclimatic models demonstrate a pattern of preference for this climate type within these groups. Ancestral bioclimatic models are projected into palaeo-climate reconstructions for the time periods indicated by the chronogram. We present two such examples that each generate plausible estimates of ancestral lineage distribution, which are similar to their current distributions. This is the first study to attempt bioclimatic projections on evolutionary time scales. The sundews appear to have diversified in response to local climate development. Some groups are specialized for Mediterranean climates, others show wide-ranging generalism. This demonstrates that Phyloclimatic modeling could be repeated for other plant groups and is fundamental to the understanding of

  8. Energetic urbanism and bioclimatic architecture; Urabanismo energetico y arquitectura bioclimatica: cuestion de escala

    Energy Technology Data Exchange (ETDEWEB)

    Turegano, J. A.; Velasco, C.; Martinez, A.

    2004-07-01

    Bioclimatic design allows the optimization in buildings thermal behavior in the location conditions provided. These conditions might not be appropriate, as what happens in urban environment, so design profit is minimum in these cases. The paper analyzes an alternative consisting on going from building scale to urban projects scale, analyzing the criteria to keep in mind when designing the General Plan or Partial plans, so that the most favorable conditions are guaranteed while considering limiting factors for the planning design flexibility, as road preferences. So, each building will meet conditions of realistic bioclimatic design application considering previously mentioned concepts and solar gains, as shown by real data analysis. (Author)

  9. The Impact of Climatic Conditions on Tourism Development with an Emphasis on TCI Bioclimatic Models (A Case Study: Nir city, Iran)

    OpenAIRE

    DARVISHI, Yusof; ESFANDIARI, Fariba; SABER, Davar; VOSUGHI, Saeedeh

    2015-01-01

    Abstract. Studying and identifying potentials and attractions hidden in natural features for consideration in national and provincial planning is of a considerable importance. Nir city has the capacity and a variety of environmental resources including adequate water, fertile soil, suitable climatic conditions, vegetation, communication factors, and tourist attracting natural and human phenomena that, in case of proper planning and use, can help solve many economic and social problems in the ...

  10. Bioclimatic solutions in vernacular architecture: transition spaces

    OpenAIRE

    Vaz, António Jorge Ferreira; Fernandes, Sílvia; Luso, Eduarda; Ferreira, Débora

    2015-01-01

    The traditional architecture is founded as a defining element of the identity of a region, and its essence should be preserved and conserved by means of maintenance and recovery actions. Thus, the best solutions and proposals for intervention should be looked for but this doesn’t imply a back to back innovation and at construction progress. This work includes the description of techniques for maintenance and conservation of bioclimatic solutions found and inventoried in the ...

  11. Bioclimatic lessons from James C. Rose's architecture

    Energy Technology Data Exchange (ETDEWEB)

    Vissilia, A.M. [Department of Structural Engineering, National Technical University of Athens, Kodrou 13, 105 58 Athens (Greece)

    2009-08-15

    This paper attempts to interpret three residences designed by landscape architect James Rose, focusing on their bioclimatic concepts (layout of the buildings: orientation in relation to sun and wind, geometry of the building form; spacing: site planning-landscape; air movement; openings: size, position and orientation, protection; and building envelope: choice of building materials and construction detailing). James Rose (1913-1991) was one of the three pioneer landscape architects who established modern landscape design in the United States. He had the opportunity to design three residences and their landscapes which constitute the clearest expression of his views about environmental design. Residences conceived in Rose's design philosophy result to the creation of an ''environment'' instead of the ordinary approach of architecture plus landscape, exhibiting his contribution to the development of a less aggressive architecture, more attentive and integrated to the environment. This is a rare approach where the design is product of one single mind that of the landscape architect. Several bioclimatic concepts are apparent in the landscape architect's works, showing a deep concern with the integration between construction and environment. The three cases explored are: the landscape architect's environment (1952, 1970), the Zheutlin environment (1956), and the Slutzker environment (1964). (author)

  12. Bioclimatic landscape design in extremely hot and arid climates

    OpenAIRE

    Attia, Shady; Duchhart, Ingrid

    2011-01-01

    In the desert the role of bioclimatic landscape design is to consider three major environmental factors, solar radiation, evaporation, wind and air flows. Therefore the landscape architect should be prepared with a group of design principals and design guidelines that can help him to improve the micro-climate and conserve energy. This paper presents a group of passive design strategies for bioclimatic landscape architecture in the desert. In this study, a bioclimatic landscape design strategy...

  13. Bioclimatic Technology in High Rise Office Building Design: A Comparison Study for Indoor Environmental Condition

    Directory of Open Access Journals (Sweden)

    Lokman Hakim Ismail

    2011-12-01

    Full Text Available The shift towards a more sustainable architecture for high-rise building is discussed and illustrated through the work of Ken Yeang and other architects. The claimed benefits of such a bioclimatic design approach are examined in the light of the results of previously conducted research projects, dealing with indoor thermal condition of high-rise office buildings. This paper reports on a study to determine if high-rise buildings designed on bioclimatic principles perform better than conventional designed ones, when situated in a tropical climate such as that in Malaysia. The paper describes a number of case studies which compare Malaysian bioclimatic and conventional building using indoor environmental parameter criteria such as air temperature, relative humidity and air velocity. Building energy index for both types of buildings is presented to illustrate the real energy savings in both types of buildings. The major finding of this work is that, the bioclimatic buildings offering a more comfortable indoor environment, increase satisfaction and show an improvement in energy saving.

  14. Energy efficiency and bioclimatic architecture - the case of the Center of Energy and Sustainable Technologies; Eficiencia energetica e arquitetura bioclimatica - o caso do Centro de Energia e Tecnologias Sustentaveis

    Energy Technology Data Exchange (ETDEWEB)

    Stilpen, Daniel Vasconcellos de Sousa

    2007-07-15

    This thesis analyzes the energy efficiency of a single-family dwelling, constructed in Ilha do Fundao, Rio de Janeiro. It first describes the Center of Energy and Sustainable Technologies and also evaluates the thermal behavior of the non-conventional materials used in its construction. After that, a thermal comfort experiment, in accordance with the thermal comfort theory proposed by Fanger, is presented. Then, the experimental data analysis, from more than 300 (three hundred) interviews, is shown. Finally, some bioclimatic suggestions for modifications in the architecture project of the dwelling are presented. All solutions represent significant increases in the human thermal comfort responses, with low implementation cost.

  15. Human thermal bioclimatic conditions associated with acute cardiovascular syndromes in Crete Island, Greece

    Science.gov (United States)

    Bleta, Anastasia G.; Nastos, Panagiotis T.

    2013-04-01

    The aim of this study is to quantify the association between bioclimatic conditions and daily counts of admissions for non-fatal acute cardiovascular (acute coronary syndrome, arrhythmia, decompensation of heart failure) syndromes (ACS) registered by the two main hospitals in Heraklion, Crete Island, during a five-year period 2008-2012. The bioclimatic conditions analyzed are based on human thermal bioclimatic indices such as the Physiological Equivalent Temperature (PET) and the Universal Thermal Climate Index (UTCI). Mean daily meteorological parameters, such as air temperature, relative humidity, wind speed and cloudiness, were acquired from the meteorological station of Heraklion (Hellenic National Meteorological Service). These parameters were used as input variables in modeling the aforementioned thermal indices, in order to interpret the grade of the thermo-physiological stress. The PET and UTCI analysis was performed by the use of the radiation and bioclimate model, "RayMan", which is well-suited to calculate radiation fluxes and human biometeorological indices. Generalized linear models (GLM) were applied to time series of daily numbers of outpatients with ACS against bioclimatic variations, after controlling for possible confounders and adjustment for season and trends. The interpretation of the results of this analysis suggests a significant association between cold weather and increased coronary heart disease incidence, especially in the elderly and males. Additionally, heat stress plays an important role in the configuration of daily ACS outpatients, even in temperate climate, as that in Crete Island. In this point it is worth mentioning that Crete Island is frequently affected by Saharan outbreaks, which are associated in many cases with miscellaneous phenomena, such as Föhn winds - hot and dry winds - causing extreme bioclimatic conditions (strong heat stress). Taking into consideration the projected increased ambient temperature in the future, ACS

  16. Modeling energy efficiency of bioclimatic buildings

    Energy Technology Data Exchange (ETDEWEB)

    Tzikopoulos, A.F.; Karatza, M.C.; Paravantis, J.A. [Piraeus Univ. (Greece). Dept. of Technology Education and Digital Systems

    2005-05-01

    The application of bioclimatic principles is a critical factor in reducing energy consumption and CO{sub 2} emissions of the building sector. This paper develops a regression model of energy efficiency as a function of environmental conditions, building characteristics and passive solar technologies. A sample of 77 bioclimatic buildings (including 45 houses) was collected, covering Greece, other Mediterranean areas and the rest of Europe. Average energy efficiency varied from 19.6 to 100% with an average of about 68%. Environmental conditions included latitude, altitude, ambient temperature, degree days and sun hours; building characteristics consisted in building area and volume. Passive solar technologies included (among others) solar water heaters, shading, natural ventilation, greenhouses and thermal storage walls. Degree days and a dummy variable indicating location in the Mediterranean area were the strongest predictors of energy efficiency while taller and leaner buildings tended to be more energy efficient. Surprisingly, many passive technologies did not appear to make a difference on energy efficiency while thermal storage walls in fact seemed to decrease energy efficiency. The model developed may be of use to architects, engineers and policy makers. Suggestions for further research include obtaining more building information, investigating the effect of passive solar technologies and gathering information on the usage of building. (Author)

  17. Temperature-based bioclimatic parameters can predict nematode metabolic footprints.

    Science.gov (United States)

    Bhusal, Daya Ram; Tsiafouli, Maria A; Sgardelis, Stefanos P

    2015-09-01

    Nematode metabolic footprints (MFs) refer to the lifetime amount of metabolized carbon per individual, indicating a connection to soil food web functions and eventually to processes supporting ecosystem services. Estimating and managing these at a convenient scale requires information upscaling from the soil sample to the landscape level. We explore the feasibility of predicting nematode MFs from temperature-based bioclimatic parameters across a landscape. We assume that temperature effects are reflected in MFs, since temperature variations determine life processes ranging from enzyme activities to community structure. We use microclimate data recorded for 1 year from sites differing by orientation, altitude and vegetation cover. At the same sites we estimate MFs for each nematode trophic group. Our models show that bioclimatic parameters, specifically those accounting for temporal variations in temperature and extremities, predict most of the variation in nematode MFs. Higher fungivorous and lower bacterivorous nematode MFs are predicted for sites with high seasonality and low isothermality (sites of low vegetation, mostly at low altitudes), indicating differences in the relative contribution of the corresponding food web channels to the metabolism of carbon across the landscape. Higher plant-parasitic MFs were predicted for sites with high seasonality. The fitted models provide realistic predictions of unknown cases within the range of the predictor's values, allowing for the interpolation of MFs within the sampled region. We conclude that upscaling of the bioindication potential of nematode communities is feasible and can provide new perspectives not only in the field of soil ecology but other research areas as well. PMID:25899615

  18. Bioclimatism and vernacular architecture of north-east India

    Energy Technology Data Exchange (ETDEWEB)

    Singh, Manoj Kumar; Atreya, S.K. [Instrument Design and Development Centre, Indian Institute of Technology Delhi, New Delhi 110016 (India); Mahapatra, Sadhan [Department of Energy, Tezpur University, Tezpur 784028, Assam (India)

    2009-05-15

    Vernacular architecture based on bioclimatism concepts was developed and used through the centuries by many civilizations across the world. Different civilizations have produced their own architectural styles based on the local conditions. This study is carried out on the vernacular buildings of north-east India across all the bioclimatic zones. A survey of 42 houses, more than 70 years old was carried out at representative locations across all bioclimatic zones. The study has yielded findings relating bioclimatism, socio-economic status and cultural setup to the vernacular architecture of the region. Also, different solar passive features are available in most of these houses, related to temperature control and promoting natural ventilation. These houses are constructed using locally available materials like wood, cane, bamboo, stone, mud, jute, lime and represent unique examples towards sustainable building design. (author)

  19. Implementing a new method for the design of bioclimatic building

    OpenAIRE

    Graça, João Mariz; Bento, João; Gonçalves, Helder

    2008-01-01

    A tool for support the design of bioclimatic buildings is under development. This tool is also specialy adapted to the particular needs of buildings in the portuguese territory, since it includes the possibility of doing evaluations according to the requirements that are imposed by the new regulations of thermal performance for buildings (RCCTE). This tool will allow designers of bioclimatic architecture to easily extract reports of different energy simulation programs, such as energy Plus, R...

  20. The comfort triangles: a new tool for bioclimatic design

    NARCIS (Netherlands)

    Evans, J.M.

    2007-01-01

    This thesis presents a new graphic tool to identify and select bioclimatic strategies according to climate conditions and comfort requirements. The Comfort Triangle relates outdoor daily temperature variations with the modification of thermal performance achieved indoors, using two key variables, av

  1. Building a sustainable future: Bioclimatic house

    Science.gov (United States)

    Gomez Mallen, Esther; Rivera Fusalba, Oriol

    2010-05-01

    The application of bioclimatic principles is a critical factor in reducing energy consumption and CO2 emissions. This poster develops a sequence of experiments and building working models in order to form students of secondary school and make progress towards real applications of new energy technologies. The activity has been carried out by 14 and 15-year-old students using a Power House building kit. Scientific method and Information and Communication Technologies (ICT) were used as an effective system of acquiring new knowledge. Students were asked to form cooperative groups. Firstly, each group had to choose the best location and orientation in the imaginary Dragon Island for the construction of the house. The house consisted of eight Styrofoam parts and one transparent plastic part. The Styrofoam parts formed the house structure (floor, walls and roof) with two interior chambers and the attached greenhouse. Once the house was assembled in a few steps, it was ready for the students to start adding more components. Students then conducted several experiments related to the heat and light energy of the Sun and the energy of the wind. Some of the experiments and building projects realized were: how to capture the Sun to heat the house by passive solar heating, how to collect the Sun's rays to heat water using a Sun Collector and how to extract electricity current from Sun Power station and from wind power plant. For most of the assays it was necessary to record the temperature and students used for that purpose a temperature sensor that comes with Multilog Pro, a portable, graphic data collection and analysis system. Groups of students were really engaged in the project and each of them ran a different test with the house. Finally they proved if their initial hypothesis was correct and they had to expose the results to the rest of the class members. Students demonstrated how we can transform and use renewable forms of energy. With the experiments students

  2. Assessing the impact of contemporary urbanization on bioclimatic features of historic architecture through a two-step simulation process

    OpenAIRE

    Pastore, Luisa; Rastogi, Parag; Rockcastle, Siobhan Francois; Monari, Hélène Yvette Claudine; Rueff, Guillaume; Andersen, Marilyne

    2016-01-01

    The aim of this paper is to provide a systematic understanding, through simulation-based assessment, of how contemporary urban planning affects the bioclimatic features of existing historic architecture. An emblematic early 20th century Brazilian building, the Casa das Rosas in São Paulo, has been chosen as a case study to see how the deep transformation of its surroundings has altered its indoor conditions. Taking into account both the original and the current urban and environmental conditi...

  3. Development of passive design zones in China using bioclimatic approach

    International Nuclear Information System (INIS)

    This paper presents the work on development of passive design zones for different climates in China. A total of 18 cities representing the five major climatic types, namely severe cold, cold, hot summer and cold winter, mild and hot summer and warm winter were selected for climatic analysis. Measured weather data were gathered and analysed. A bioclimatic approach was adopted in which the comfort zone and 12 monthly climatic lines were determined and plotted on the psychrometric chart for each city. From these bioclimatic charts, the potential use of passive design strategies such as solar heating, natural ventilation, thermal mass with/without night ventilation and evaporative cooling was assessed. A total of nine passive design strategy zones were identified, and appropriate design strategies suggested for both summer and winter consideration

  4. Development of passive design zones in China using bioclimatic approach

    Energy Technology Data Exchange (ETDEWEB)

    Lam, Joseph C. [Building Energy Research Group, Department of Building and Construction, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (China); Yang, Liu; Liu, Jiaping [School of Architecture, Xi' an University of Architecture and Technology, Shaanxi (China)

    2006-04-15

    This paper presents the work on development of passive design zones for different climates in China. A total of 18 cities representing the five major climatic types, namely severe cold, cold, hot summer and cold winter, mild and hot summer and warm winter were selected for climatic analysis. Measured weather data were gathered and analysed. A bioclimatic approach was adopted in which the comfort zone and 12 monthly climatic lines were determined and plotted on the psychrometric chart for each city. From these bioclimatic charts, the potential use of passive design strategies such as solar heating, natural ventilation, thermal mass with/without night ventilation and evaporative cooling was assessed. A total of nine passive design strategy zones were identified, and appropriate design strategies suggested for both summer and winter consideration. (author)

  5. Bioclimatic solutions existing in vernacular architecture. Rehabilitation techniques

    OpenAIRE

    Ferreira, Débora; Luso, Eduarda; Fernandes, Sílvia; Vaz, António Jorge Ferreira; Moreno, Carlos; Correia, Rafael

    2013-01-01

    The traditional architecture is founded as a defining element of the identity of a region, and its essence should be preserved and conserved by means of maintenance and recovery actions. Thus, the best solutions and proposals for intervention should be looked for but this doesn’t imply a back to back innovation and at construction progress. This work includes the description of techniques for maintenance and conservation of bioclimatic solutions found and inventoried in the north of the...

  6. Projected Bioclimatic Change for the San Francisco Bay Area

    Science.gov (United States)

    Torregrosa, A.; Taylor, M.; Flint, L. E.; Flint, A. L.; Weiss, S. B.

    2011-12-01

    Past and future climate data for the San Francisco Bay Area were classified using the Rivas-Martinez (R-M) system to group long-term annual climate averages into categories with biotic significance based on thermotypic and ombrotypic regimes. Bioclimate maps were generated at 270 meter resolution for ten San Francisco Bay Area counties for six 30-year periods from 1911 to 2100 which include the historical 1) 1911-1940, 2) 1941-1970, 3) 1971-2000, and future 4) 2011-2040, 5) 2041-2070, and 6) 2071-2100. Historic averages were generated from PRISM climate data. Future climate projections were generated from two IPCC-based future scenarios (A2 and B1) and two coupled atmosphere-ocean general circulation models (NOAA Geophysical Fluid Dynamics Laboratory and the Parallel Climate Model). Strong congruence was found among the boundaries for historic bioclimates and current vegetation types. However, future scenarios had varying patterns of losses and gains in bioclimate classes and these tracked mesoclimate gradients. Comparisons between projected bioclimatic categories and modeled future climatic water deficit show strong correspondence except in zones of deep alluvial deposits. Maps show areas of bioclimatic stability, e.g. areas that did not change under any future projection, versus areas with significant bioclimatic shifts in all future scenarios. These analyses and maps will be useful for assessing natural resource vulnerability to climate change and natural resource conservation-based climate adaptation decisions.

  7. Climatic changes, bioclimatic stages and flooding durations in relation with public health

    Science.gov (United States)

    Sandoz, A.; Roumieux, C.; Trouillet, A.

    2009-12-01

    Climatic Changes, and more generaly Global Changes, play a major role in environmental modifications related to public health. Modifications of temperatures, precipitations... influence ecological habitats. These habitats can be adapted for some animals species, responsable for predestinate pandemics. Mosquitoes and birds represent for certain pandemics the essential elements of virus transmission. Abundance of mosquitoes and birds species, is heavily conditioned to favorable ecological habitats, flooded areas extent and their variations. The study we carried, has been done in South of France. We show present status of ecological habitats and flooded durations in relation with actual climat. We have refine mediterranean spatial knowledge in mediterranean basin with actual data. We show evolution of climat and consequences for bioclimatic stages, using world clim data and IPCC scenarii. We reach environment impact for certain virus like West Nile virus. This virus affects birds, horses and hands up to men (e.g.West Nile virus appeared in 1999 in USA, between 1999 and 2007 : 27 000 human cases including 1 050 deaths). Presence of the virus is conditioned by different factors, primarily including vector distribution (mosquitoes). We show how it’s possible to localise favorable areas for the virus and to predict its future expansion areas. We present maps of the possibilities for future concerning previsions of bioclimatic steps variations. Thanks to the latest remote sensing and spatial analysis techniques. Our maps may be used as precious tools to help decision makers when faced with mosquito related problems.

  8. Bioclimatic buildings strategies for the climate of Araras city, São Paulo - Brazil

    OpenAIRE

    Nascimento, Juliana M. A. do; Sacht, Helenice Maria; Bragança, L.

    2013-01-01

    The concept of bioclimatic architecture or passive solar architecture can be defined as an architecture that includes the climate as an important variable in the design process. Through the use of bioclimatic strategies the environment comfort can be obtained naturally for users of buildings, which depending on the climate, the construction techniques and the type of use. Considering these aspects, the main objective of this work is to identify bioclimatic strategies for buildings for the cli...

  9. Bioclimatic Design in Casablanca (Morocco): Decision Support through Building Performance Simulation

    OpenAIRE

    Attia, Shady; Geoffrey, van Moeseke

    2013-01-01

    In this paper, bioclimatic design strategies in Moroccan architecture have been analyzed for the city of Casablanca. The aim of this study is to enable architects to re-understand the lessons of tradition, because the way towards bioclimatic architecture should start by understanding vernacular architecture. The first part of the paper presents climate analysis and a set of bioclimatic principles addressing orientation, shading, thermal mass, insulation and natural ventilation as a mean for p...

  10. Assessment of bioclimatic conditions in Crete Island, Greece

    Science.gov (United States)

    Bleta, A.; Nastos, P. T.; Matzarakis, A.

    2012-04-01

    The objective of this study is to assess and analyze the human bioclimatic conditions of Crete Island, using the Physiologically Equivalent Temperature (PET), which is one of the most popular human thermal indices derived from the human energy balance. Bioclimatic studies provide a framework linking biophysical climate sensitivity to social/economic factors that mitigate or amplify the consequences of environmental changes. PET is defined as the physiological equivalent temperature at any given place (outdoors or indoors). It is equivalent to the air temperature at which, in a typical indoor setting, the heat balance of the human body (work metabolism 80 W of light activity, added to basic metabolism; heat resistance of clothing 0.9 clo) is maintained with core and skin temperatures equal to those of the under assessment conditions. It has been realized that, to estimate the thermal effect of the environment to the human body, the total of effects of all of the thermal components, not only as individual parameters, should be taken into account. The climatic data (air temperature, relative humidity, cloudiness, wind speed) for Crete Island, were obtained by archives of fifteen meteorological stations of the Hellenic National Meteorological Service (HNMS). These data of period 1955-2010 were used for the calculation of PET in order to interpret the grade of the thermo-physiological stress. Crete Island, as it is located in the Southeastern Mediterranean basin, is of great touristic interest due to its splendid landscapes, archaeological sites and coastal areas combined with its excellent climatic conditions. However, Crete Island is frequently affected by Saharan outbreaks which are associated with miscellaneous phenomena, such as Föhn winds - hot and dry winds - causing extreme bioclimatic conditions (strong heat stress). The exploitation of the results of this analysis, such as bioclimatic diagrams, temporal and spatial distributions of PET as well as trends and

  11. School Buildings in Greece: The Bioclimatic Challenge and a Photovoltaic Pilot Project

    Science.gov (United States)

    Patargias, Panagiotis A.; Angela, Kalianou; Galanis, George; Vassilopoulou, Marina; Drosou, Maria; Protogeropoulos, Christos

    2007-01-01

    Greece's School Buildings Organisation (SBO) is developing bioclimatic pilot schemes which are yielding positive results. Bioclimatic action has been one of the principal priorities of Greek school infrastructure planning since 2004. Among the activities undertaken by SBO to use renewable energy sources in school buildings is a pilot project to…

  12. Projected vegetation changes for the American Southwest: combined dynamic modeling and bioclimatic-envelope approach.

    Science.gov (United States)

    Notaro, Michael; Mauss, Adrien; Williams, John W

    2012-06-01

    This study focuses on potential impacts of 21st century climate change on vegetation in the Southwest United States, based on debiased and interpolated climate projections from 17 global climate models used in the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Among these models a warming trend is universal, but projected changes in precipitation vary in sign and magnitude. Two independent methods are applied: a dynamic global vegetation model to assess changes in plant functional types and bioclimatic envelope modeling to assess changes in individual tree and shrub species and biodiversity. The former approach investigates broad responses of plant functional types to climate change, while considering competition, disturbances, and carbon fertilization, while the latter approach focuses on the response of individual plant species, and net biodiversity, to climate change. The dynamic model simulates a region-wide reduction in vegetation cover during the 21st century, with a partial replacement of evergreen trees with grasses in the mountains of Colorado and Utah, except at the highest elevations, where tree cover increases. Across southern Arizona, central New Mexico, and eastern Colorado, grass cover declines, in some cases abruptly. Due to the prevalent warming trend among all 17 climate models, vegetation cover declines in the 21st century, with the greatest vegetation losses associated with models that project a drying trend. The inclusion of the carbon fertilization effect largely ameliorates the projected vegetation loss. Based on bioclimatic envelope modeling for the 21st century, the number of tree and shrub species that are expected to experience robust declines in range likely outweighs the number of species that are expected to expand in range. Dramatic shifts in plant species richness are projected, with declines in the high-elevation evergreen forests, increases in the eastern New Mexico prairies, and a northward shift of the

  13. Simply architecture or bioclimatic architecture?; Arquitectura bioclimatica o simplemente Arquitectura?

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez Torres, Juan Manuel [Universidad de Guanajuato (Mexico)

    2006-10-15

    The bioclimatic architecture is the one which profits from its position in the environment and its architectonic elements for the climate benefit. With the aim of reach the internal thermal comfort without using mechanical systems. This article states the story about this singular kind of architecture during centuries. And also emphasizes the sunlight utilization, in order to achieve the desired thermal well-being in edifications. [Spanish] El tipo de arquitectura que toma ventaja de su disposicion en el entorno y sus elementos arquitectonicos para el aprovechamiento del clima, con el fin de conseguir el confort termico interior sin utilizar sistemas mecanicos, se denomina bioclimatica. En este articulo se habla de la historia de este tipo tan singular de arquitectura con el paso de los siglos, y tambien se hace hincapie acerca de la luz solar, como un medio muy eficiente a traves del cual las edificaciones pueden ser disenadas para lograr el bienestar termico deseado.

  14. Design for comfort in Nigeria - a bioclimatic approach

    Energy Technology Data Exchange (ETDEWEB)

    Ajibola, Kolawole [Obafemi Awolowo Univ., Architecture Dept., Ile-Ife (Nigeria)

    2001-05-01

    Most of the previous analyses of climate of Nigeria have been for agricultural use or weather prediction purposes. They have little or no application for building design. This paper examines and analyses the climate of Nigeria with respect to building design parameters -- temperature, relative humidity, air velocity and solar radiation, with a view to providing design recommendations for the achievement of physiological comfort. It accesses the current models of climatic analysis with respect to building design. It then develops bioclimatic charts for various cities for the country using a combination of a general atmospheric circulation model approach and control potential techniques. Finally, design recommendations are then suggested for typical cities in the country. (Author)

  15. Bioclimatic Extremes Drive Forest Mortality in Southwest, Western Australia

    Directory of Open Access Journals (Sweden)

    Bradley John Evans

    2013-07-01

    Full Text Available Extreme and persistent reductions in annual precipitation and an increase in the mean diurnal temperature range have resulted in patch scale forest mortality following the summer of 2010–2011 within the Forest study area near Perth, Western Australia. The impacts of 20 bioclimatic indicators derived from temperature, precipitation and of actual and potential evapotranspiration are quantified. We found that spatially aggregated seasonal climatologies across the study area show 2011 with an annual mean of 17.7 °C (± 5.3 °C was 1.1 °C warmer than the mean over recent decades (1981–2011,- 16.6 °C ± 4.6 °C and the mean has been increasing over the last decade. Compared to the same period, 2010–2011 summer maximum temperatures were 1.4 °C (31.6 °C ± 2.0 °C higher and the annual mean diurnal temperature range (Tmax−Tmin was 1.6 °C higher (14.7 °C ± 0.5 °C. In 2009, the year before the forest mortality began, annual precipitation across the study area was 69% less (301 mm ± 38 mm than the mean of 1981–2010 (907 mm ± 69 mm. Using Système Pour l'Observation de la Terre mission 5 (SPOT-5 satellite imagery captured after the summer of 2010–2011 we map a broad scale forest mortality event across the Forested study area. This satellite-climatology based methodology provides a means of monitoring and mapping similar forest mortality events- a critical contribution to our understanding the dynamical bioclimatic drivers of forest mortality events.

  16. Assessment of bioclimatic conditions within the area of Szczecin agglomeration

    Directory of Open Access Journals (Sweden)

    Jadwiga Nidzgorska-Lencewicz

    2013-10-01

    Full Text Available The aim of this paper is to characterise the bioclimatic conditions in the city of Szczecin, particularly the recognition of the frequency of occurrence of the conditions unfavourable to humans. The analysis is based on the hourly values of particular meteorological elements and pollutant concentrations in the period 2005?2010 taken at the three measuring stations located in various settlement structures in Szczecin metropolitan area. The Universal Thermal Climate Index (UTCI was used to assess heat stress of human organism and the assessment of thermal sensation was based on the Effective Temperature index (ET. It was established that on a yearly basis the most favourable biothermal conditions are observed in the centre of the city and in its southern districts ? categories no thermal stress (UTCI and thermal comfort (ET are most frequently recorded there. However, in the northern parts of the city the most common class of thermal stress (UTCI is moderate cold stress and thermal sensation category (ET cool and cold. Among the situations which thermal stress, the conditions connected with discomfort related to cold rather than heat are more frequent. Throughout the year, the strong cold stress (UTCI < 13 ° C and sensations (ET related to cold stress occurred in 12.5% and 25% of time respectively, whereas thermal discomfort related to strong heat stress with UTCI values over 32 ° C and ET thermal sensations hot and very hot were observed incomparably less frequently ? 0.3% and 3.7% respectively. However, heat-related discomfort is more frequently observed in the city centre, and cold-related discomfort is most frequently experienced by residents of the outskirts of the city, particularly its northern parts. The statistically strongest relationships were observed between biothermal sensation and ozone (O3 and particulate matter PM2.5 immissions. During the analysed period, the most unfavourable bioclimatic conditions occurred predominantly in

  17. Impact of SenseCam on memory, identity and mood in Korsakoff's syndrome: a single case experimental design study.

    Science.gov (United States)

    Svanberg, Jenny; Evans, Jonathan J

    2014-01-01

    This study aimed to investigate the impact of SenseCam, a wearable, automatic camera, on subjective mood and identity in a patient with severe memory impairment due to Korsakoff's syndrome. It was hypothesised that SenseCam would improve Ms A's mood and identity through enhancing recall of autobiographical memories of recent events, therefore supporting a coherent sense of self; the lack of which was contributing to Ms A's mood deterioration. An ABA single case experimental design investigated whether using SenseCam to record regular activities impacted on Ms A's mood and identity. Ms A experienced improved recall for events recorded using SenseCam, and showed improvement on subjective ratings of identity. However, a corresponding improvement in mood was not seen, and the study was ended early at Ms A's request. Qualitative information was gathered to explore Ms A's experience of the study, and investigate psychosocial factors that may have impacted on the use of SenseCam. SenseCam may be of significant use as a compensatory memory aid for people with Korsakoff's syndrome and other types of alcohol-related brain damage (ARBD), but acceptance of memory impairment and consistent support may be among the factors required to support the use of such assistive technologies in a community setting. PMID:24131241

  18. An analysis of bioclimatic zones and implications for design of outdoor built environments in Egypt

    Energy Technology Data Exchange (ETDEWEB)

    Mahmoud, Ayman Hassaan A. [Department of Architecture Engineering, Faculty of Engineering, Cairo University, Giza 12211 (Egypt); Department of Architecture Engineering, The British University in Egypt, El-Sherouk City (Egypt)

    2011-03-15

    Climate considerations are essential dimensions in the assessment of quality of outdoor built environments. This paper provides an analysis of bioclimatic classification of Egypt to help the environmental design of wide range of purposes, including: climate responsive design; energy conservation and thermal comfort in the outdoor built environments. The analysis of this classification uses a bioclimatic approach in which the comfort zone and monthly climatic lines were determined and plotted on the psychrometric chart. Since the mean radiant temperature (T{sub mrt}) is the most important input parameter for the energy balance in outdoor environments, the charts apply the ASHRAE 55-2004 standard considering the operative temperature as a function of T{sub mrt}. Analysis for each bioclimatic zone determines the potential of passive design strategies to maintain thermal comfort in outdoor spaces and to contribute to energy efficient built environment. Finally, this study suggests a design guideline matrix for landscape architectural design for the different bioclimatic zones. (author)

  19. Potential of Bioclimatic Architecture in the Formation of Regional Spatial Environment

    OpenAIRE

    Suvorovs, Edgars; Treija, Sandra

    2012-01-01

    Bioclimatic architecture is a world-known trend inbuilding architecture design, but in Latvia this term is scarcely used.While studying the theory of architecture and analysing practicalexamples, the author of this Paper has endeavoured to outline therole of bioclimatic factors in the formation of features of regionalarchitecture. This Paper renders a historical outset of incoming ofsustainable development ideas into architecture. With a glance tothe urgency of energy–efficient building in La...

  20. Potential of Bioclimatic Architecture in the Formation of Regional Spatial Environment

    OpenAIRE

    Bondars, E; Treija, S

    2011-01-01

    Bioclimatic architecture is a world-known trend in building architecture design, but in Latvia this term is scarcely used. While studying the theory of architecture and analysing practical examples, the author of this Paper has endeavoured to outline the role of bioclimatic factors in the formation of features of regional architecture. This Paper renders a historical outset of incoming of sustainable development ideas into architecture. With a glance to the urgency of energy–efficient buildin...

  1. Potential of Bioclimatic Architecture in the Formation of Regional Spatial Environment

    OpenAIRE

    Bondars, E; Treija, S

    2012-01-01

    Bioclimatic architecture is a world-known trend in building architecture design, but in Latvia this term is scarcely used. While studying the theory of architecture and analysing practical examples, the author of this Paper has endeavoured to outline the role of bioclimatic factors in the formation of features of regional architecture. This Paper renders a historical outset of incoming of sustainable development ideas into architecture. With a glance to the urgency of energy–efficient buildin...

  2. Bioclimatic Technology in High Rise Office Building Design: A Comparison Study for Indoor Environmental Condition

    OpenAIRE

    Lokman Hakim Ismail; Magda Sibley; Izudinshah Abdul Wahab

    2011-01-01

    The shift towards a more sustainable architecture for high-rise building is discussed and illustrated through the work of Ken Yeang and other architects. The claimed benefits of such a bioclimatic design approach are examined in the light of the results of previously conducted research projects, dealing with indoor thermal condition of high-rise office buildings. This paper reports on a study to determine if high-rise buildings designed on bioclimatic principles perform better than convention...

  3. Determination of bioclimatic comfort in Erzurum-Rize expressway corridor using GIS

    Energy Technology Data Exchange (ETDEWEB)

    Zengin, Murat; Karahan, Faris [Department of Landscape Architecture, Faculty of Agriculture, Atatuerk University, 25240 Erzurum (Turkey); Kopar, Ibrahim [Department of Physical Geography, Faculty of Literature, Atatuerk University, 25240 Erzurum (Turkey)

    2010-01-15

    In this study, topographical and climatical conditions are prescinded all along Erzurum-Rize expressway corridors to appoint the areas which have bioclimatic comfort in summer season (June, July, August). For this purpose, the climate data (temperature, relative humidity, wind speed) from nine different stations was entered in the digital data base. By dint of ArcGIS 9.1 software, climatic data were analysed and numerological maps were produced by Inverse Distance Weighted (IDW) interpolation method. As a method, bioclimatically comfortable areas consists of: relative humidity between 30 and 65%, temperature between 15 and 20 C, and wind speed up to 5 m/s. The maps were scored as 0 for uncomfortable and 1 for comfortable and superposed, and bioclimatic comfort area (temperature: 1-relative humidity: 1-wind speed: 1) were determined. Besides, topographic factors were appreciated. As a result of this study, it is concerned that the area (452749 ha. % 63); beginning from south of the Mountains Mescit which is started by Black Sea coastline to Mountain Mescit (3230 m) is out of bioclimatic comfort region; the Erzurum depression (1758 m) beginning from the Mountains Mescit has been determined that area has bioclimatic comfort conditions. As a consequence, it is confirmed that one of the ideal area which has bioclimatic comfort is the Erzurum depression area in Turkey. (author)

  4. Methodology for bioclimatic design; Metodologia para el diseno bioclimatico

    Energy Technology Data Exchange (ETDEWEB)

    Morillon Galvez, David [Instituto de Ingenieria de la UNAM, Mexico, D.F. (Mexico)

    2000-07-01

    A methodology for natural air conditioning of buildings is presented; bioclimatic architecture, in order to contribute to the suitable use of components of the building (walls, ceilings, floors, orientations, etc.) that when interacting with the environment takes advantage of it, without deterioration of the same, obtaining energy efficient designs. As well as an analysis of the elements and factors that the architecture must have to be sustainable; an adequate design to the environment, saving and efficient use of energy, the use of alternating energies by means of ecotechnologies and the self-sufficiency. [Spanish] Se presenta una metodologia para la climatizacion natural de edificios; arquitectura bioclimatica, con el objetivo de aportar al uso adecuado de componentes del edificio (muros, techos, pisos, orientaciones, etc.) que al interactuar con el ambiente tome ventaja de el, sin deterioro del mismo, logrando disenos energeticamente eficientes. Asi como un analisis de los elementos y factores que debe tener la arquitectura para ser sustentable; un diseno adecuado al ambiente, ahorro y uso eficiente de la energia, el uso de energias alternas mediante ecotecnologias y la autosuficiencia.

  5. A Distributed Sensor Network for the Control of a Bioclimatic House in Spain

    Directory of Open Access Journals (Sweden)

    Luis Magdalena

    2009-10-01

    Full Text Available The XXI century home should be a digital habitat, a connected residence, but at the same time it should be involved in sustainability and the environment. The location of new technologies at home, and its acceptance by the user, requires, among other actions, a significant diffusion and activity to be undertaken. This work proposes the development of a Smart House network designed for its integration into a sustainable and bioclimatic solar house. The paper focuses on a specific aspect of the house design, the control system bus, developed for the management of the different parameters, variables, sensors and actuators which coexist at home. Finally, the system has been installed in a laboratory bioclimatic house. Environmental variable experiments based on the control of passive elements, such as phase shift gels, are presented. Experimental results show that the system is able to benefit from the bioclimatic elements in the house by taking into account the user preferences.

  6. Phytolith Records in Vermicular Red Earth: Implications for Bioclimatic Variations during Pleistocene

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Phytolith analysis is employed in bioclimatic research into vermicular red earth, especially into its form, assemblage and zonation. The phytolith assemblage is divided into 10 zones. The statistics and main factor analysis of phytolith show that the obtained main factor load curves could suggest a climate change. Combined with phytolith assemblage feature, the bioclimatic variation of vermicular red earth during its formation stage, consisting of 5 arid-cold stages, 4 warm-humid stages and 2 mild stages, is reconstructed in detail. The research results indicate that phytolith records are ideal paleoclimatic signals in vermicular red earth, and that abundant information on environmental evolution can be located.

  7. Bioclimatic in medische omgeving. TNO Onderzoek met innovatievoucher SenterNovem

    NARCIS (Netherlands)

    Cornelissen, H.J.M.; Duisterwinkel, A.E.; Wieringa, F.P.

    2008-01-01

    De viertraps-luchtbehandelingstechniek van Bioclimatic is speciaal ontworpen om de lucht te zuiveren van allerlei zwevende deeltjes en micro-organismen. Met een innovatievoucher van SenterNovem heeft het bedrijf een oriënterend onderzoek laten uitvoeren door TNO naar eventuele medische toepassingen.

  8. BioClimatic Architecture without Architects: Green Design Tips by Insects, Animals and Vernacular Buildings

    NARCIS (Netherlands)

    Christodoulou, A.

    2011-01-01

    This "designers' manual" is made during the TIDO-course AR0531 Smart & Bioclimatic Design. In our struggle towards a smarter building approach we can get our inspiration from natural and vernacular buildings, which survived for thousands of years and integrated well with nature, without the technol

  9. Separation of the bioclimatic spaces of Himalayan tree rhododendron species predicted by ensemble suitability models

    Directory of Open Access Journals (Sweden)

    Sailesh Ranjitkar

    2014-08-01

    Full Text Available The tree rhododendrons include the most widely distributed Himalayan Rhododendron species belonging to the subsection Arborea. Distributions of two members of this sub-species were modelled using bioclimatic data for current conditions (1950–2000. A subset of the least correlated bioclimatic variables was used for ecological niche modelling (ENM. We used an ENM ensemble method in the BiodiversityR R-package to map the suitable climatic space for tree rhododendrons based on 217 point location records. Ensemble bioclimatic models for tree rhododendrons had high predictive power with bioclimatic variables, which also separated the climatic spaces for the two species. Tree rhododendrons were found occurring in a wide range of climate and the distributional limits were associated with isothermality, temperature ranges, temperature of the wettest quarter, and precipitation of the warmest quarter of the year. The most suitable climatic space for tree rhododendrons was predicted to be in western Yunnan, China, with suitability declining towards the west and east. Its occurrence in a wide range of climatic settings with highly dissected habitats speaks to the adaptive capacity of the species, which might open up future options for their conservation planning in regions where they are listed as threatened.

  10. Bioclimatic architecture in a social interest house; Arquitectura bioclimatica en la vivienda de interes social

    Energy Technology Data Exchange (ETDEWEB)

    Morillon Galvez, David [Programa Universitario de Energia, Universidad Nacional Autonoma de Mexico, Mexico D.F. (Mexico)

    2005-07-01

    The bioclimatic architecture tries to promote one more type of design and to settle down bases to become aware and have a change of attitude toward the designing and use of the construction materials and equipment. The change consists in offering tools so that the designer and constructor consider the interaction of the environment over the construction site, in order for this last to regulate the heat interchanges with the environment and provide comfort conditions for human beings. With base in the study of the bioclima of the diverse climatic zones of the Republic, recommendations for the architectonic and urban design are emitted. Also, we will analyze and discuss over the tool that represents the bioclimatic design for the construction of buildings, under the considering that approximately 66 % of the country is submitted to warm climate. The recommendations will consist in defining the favorable orientation of the facades to the climate of the site along with thermal characteristics, thickness and finishing of the construction materials, exposure to the sun in windows, forms of the building, among others. These recommendations will allow to obtain a building designed for the conditions of comfort and at the same time energy saving, in accordance with the official norms for the thermal design of the building cover that, in this year will be compulsory for the case of non residential buildings and approaching to residential buildings. This can be without extra cost for the builder and surely with benefits for the user, such as electrical energy saving, diminution of the billing, thermal and environmental comfort conditions, among others. All of this will be presented in this document besides constructed projects and examples of modification in the present designs of houses in the country. [Spanish] La arquitectura bioclimatica trata de promover un tipo mas de diseno, trata de sentar bases para la toma de conciencia y un cambio de actitud respecto al diseno y al

  11. Do projections from bioclimatic envelope models and climate change metrics match?

    DEFF Research Database (Denmark)

    Garcia, Raquel A.; Cabeza, Mar; Altwegg, Res;

    2016-01-01

    Aim: Bioclimatic envelope models are widely used to describe changes in climatically suitable areas for species under future climate scenarios. Climate change metrics are applied independently of species data to characterize the spatio-temporal dynamics of climate, and have also been used...... for sub-Saharan Africa with ensembles of bioclimatic envelope models for 2723 species of amphibians, snakes, mammals and birds. For each taxonomic group, we performed three comparisons between the two approaches: (1) is projected change in local climatic suitability (models) greater in grid cells...... with larger temporal differences in local climate (metrics); (2) are projected losses or gains of climatically suitable areas (models) greater for species in grid cells with climates that are projected to be less or more available in the future, respectively (metrics); and (3) are projected shifts...

  12. Applying Geospatial Semantic Array Programming for a Reproducible Set of Bioclimatic Indices in Europe

    CERN Document Server

    Caudullo, Giovanni

    2014-01-01

    Bioclimate-driven regression analysis is a widely used approach for modelling ecological niches and zonation. Although the bioclimatic complexity of the European continent is high, a particular combination of 12 climatic and topographic covariates was recently found able to reliably reproduce the ecological zoning of the Food and Agriculture Organization of the United Nations (FAO) for forest resources assessment at pan-European scale, generating the first fuzzy similarity map of FAO ecozones in Europe. The reproducible procedure followed to derive this collection of bioclimatic indices is now presented. It required an integration of data-transformation modules (D-TM) using geospatial tools such as Geographic Information System (GIS) software, and array-based mathematical implementation such as semantic array programming (SemAP). Base variables, intermediate and final covariates are described and semantically defined by providing the workflow of D-TMs and the mathematical formulation following the SemAP notat...

  13. Dangers of using global bioclimatic datasets for ecological niche modeling. Limitations for future climate projections

    OpenAIRE

    Bedia, Joaquín; Herrera, Sixto; Gutiérrez, José Manuel

    2013-01-01

    Global bioclimatic datasets are being widely used in ecological research to estimate the potential distribution of species using Climate Envelope Models (CEMs). These datasets are easily available and offer high resolution information for all land areas globally. However, they have not been tested rigorously in smaller regions, and their use in regional CEM studies may pose problems derived from their poor representation of local climate features. Moreover, these problems may be enhanced when...

  14. Bioclimatic and vegetation mapping of a topographically complex oceanic island applying different interpolation techniques

    Science.gov (United States)

    Garzón-Machado, Víctor; Otto, Rüdiger; del Arco Aguilar, Marcelino José

    2014-07-01

    Different spatial interpolation techniques have been applied to construct objective bioclimatic maps of La Palma, Canary Islands. Interpolation of climatic data on this topographically complex island with strong elevation and climatic gradients represents a challenge. Furthermore, meteorological stations are not evenly distributed over the island, with few stations at high elevations. We carried out spatial interpolations of the compensated thermicity index (Itc) and the annual ombrothermic Index (Io), in order to obtain appropriate bioclimatic maps by using automatic interpolation procedures, and to establish their relation to potential vegetation units for constructing a climatophilous potential natural vegetation map (CPNV). For this purpose, we used five interpolation techniques implemented in a GIS: inverse distance weighting (IDW), ordinary kriging (OK), ordinary cokriging (OCK), multiple linear regression (MLR) and MLR followed by ordinary kriging of the regression residuals. Two topographic variables (elevation and aspect), derived from a high-resolution digital elevation model (DEM), were included in OCK and MLR. The accuracy of the interpolation techniques was examined by the results of the error statistics of test data derived from comparison of the predicted and measured values. Best results for both bioclimatic indices were obtained with the MLR method with interpolation of the residuals showing the highest R 2 of the regression between observed and predicted values and lowest values of root mean square errors. MLR with correction of interpolated residuals is an attractive interpolation method for bioclimatic mapping on this oceanic island since it permits one to fully account for easily available geographic information but also takes into account local variation of climatic data.

  15. Comfort conditions in a bioclimatic building; Condiciones de confort en un edificio bioclimatico

    Energy Technology Data Exchange (ETDEWEB)

    Monne, C.; Turegano, J. A.

    2004-07-01

    In the present article we show the conditions of comfort reached in the residence of Proyecto Hombre (Turegano y Monne, 1996), designed under bioclimatic concepts, this using the study of the temperatures and relative humidity measured in the building during a period of one year. In the carried out study we distinguish the behaviour of each zone of the building, considering every period of the year, indicating the high level of comfort reached and the obtained thermal stability. (Author)

  16. A Distributed Sensor Network for the Control of a Bioclimatic House in Spain

    OpenAIRE

    Luis Magdalena; Javier Jiménez-Leube; Álvaro Gutiérrez

    2009-01-01

    The XXI century home should be a digital habitat, a connected residence, but at the same time it should be involved in sustainability and the environment. The location of new technologies at home, and its acceptance by the user, requires, among other actions, a significant diffusion and activity to be undertaken. This work proposes the development of a Smart House network designed for its integration into a sustainable and bioclimatic solar house. The paper focuses on a specific aspect of the...

  17. Bioclimatic Architecture, a Sensible and Logical Approach towards the Future of Building Development

    OpenAIRE

    Ţundrea, Horia; Budescu, Mihai

    2013-01-01

    The modern world building scene tends to depend more and more on the economical climate as well as the geographical climate itself, as none of the major players in the construction game can afford to ignore current conditions and dismiss logical solutions that can drastically cut the impact on the environment as well as the exploitation costs. The present paper will provide the information needed to understand the bioclimatic architecture concept, as well as describe a few examples of such ap...

  18. BWID System Design Study

    International Nuclear Information System (INIS)

    The mission of the Buried Waste Integrated Demonstration (BWID) System Design Study is to identify and evaluate technology process options for the cradle-to-grave remediation of Transuranic (TRU)-Contaminated Waste Pits and Trenches buried at the Idaho National Engineering Laboratory (INEL). Emphasis is placed upon evaluating system configuration options and associated functional and operational requirements for retrieving and treating the buried wastes. A Performance-Based Technology Selection Filter was developed to evaluate the identified remediation systems and their enabling technologies based upon system requirements and quantification of technical Comprehensive Environmental Response, Compensation, and Liability (CERCLA) balancing criteria. Remediation systems will also be evaluated with respect to regulatory and institutional acceptance and cost-effectiveness

  19. The Scope of Design Studying

    Institute of Scientific and Technical Information of China (English)

    JIN Yin; Ren Wenying

    2007-01-01

    This article trys to discuss the scope of design studying in two fields.Firstly, design has three meanings: wide design, art design and industrial design.Secondly, design studying has five contents: cultural, philosophical, methodological, produced and marketable trends.

  20. The integration of bioclimatic indices in an objective probabilistic model for establishing and mapping viticulture suitability in a region

    Science.gov (United States)

    Moral García, Francisco J.; Rebollo, Francisco J.; Paniagua, Luis L.; García, Abelardo

    2014-05-01

    Different bioclimatic indices have been proposed to determine the wine suitability in a region. Some of them are related to the air temperature, but the hydric component of climate should also be considered which, in turn, is influenced by the precipitation during the different stages of the grapevine growing and ripening periods. In this work we propose using the information obtained from 10 bioclimatic indices and variables (heliothermal index, HI, cool night index, CI, dryness index, DI, growing season temperature, GST, the Winkler index, WI, September mean thermal amplitude, MTA, annual precipitation, AP, precipitation during flowering, PDF, precipitation before flowering, PBF, and summer precipitation, SP) as inputs in an objective and probabilistic model, the Rasch model, with the aim of integrating the individual effects of them, obtaining the climate data that summarize all main bioclimatic indices which could influence on wine suitability, and utilize the Rasch measures to generate homogeneous climatic zones. The use of the Rasch model to estimate viticultural suitability constitutes a new application of great practical importance, enabling to rationally determine locations in a region where high viticultural potential exists and establishing a ranking of the bioclimatic indices or variables which exerts an important influence on wine suitability in a region. Furthermore, from the measures of viticultural suitability at some locations, estimates can be computed using a geostatistical algorithm, and these estimates can be utilized to map viticultural suitability potential in a region. To illustrate the process, an application to Extremadura, southewestern Spain, is shown. Keywords: Rasch model, bioclimatic indices, GIS.

  1. On the use of bioclimatic architecture principles in order to improve thermal comfort conditions in outdoor spaces

    Energy Technology Data Exchange (ETDEWEB)

    Gaitani, N.; Mihalakakou, G. [Department of Environment and Natural Resources Management, University of Ioannina, 30 100 Agrinion (Greece); Santamouris, M. [Laboratory of Meteorology, Department of Physics, Division of Applied Physics, University of Athens, University Campus, Build. PHYS-V, Athens, GR 15784 (Greece)

    2007-01-15

    The present paper describes a process for designing and applying several techniques based on bioclimatic architecture criteria and on passive cooling and energy conservation principles in order to improve the thermal comfort conditions in an outdoor space location located in the Great Athens area. For that reason, the thermal comfort conditions in 12 different outdoor space points in the experimented location have been calculated using two different thermal comfort bioclimatic indices developed to be used for outdoor spaces. The used indices were the following: (a) 'Comfa', which is based on estimating the energy budget of a person in an outdoor environment and (b) 'thermal sensation', based on the satisfaction or dissatisfaction sensation under the prevailing climatic conditions of the outdoor spaces. Calculations were performed during the summer period and two different scenarios of the constructed space parameters have been considered. The first scenario consists of a conventionally constructed space, while the second one includes various architectural improvements according to the bioclimatic design principles. The two bioclimatic indicators were used for calculating the outdoor thermal comfort conditions in the above-mentioned outdoor space locations for both scenarios and the effect of the bioclimatic design architectural improvements on the human thermal comfort sensation was presented and analysed. (author)

  2. School-Based Peer-Related Social Competence Interventions for Children with Autism Spectrum Disorder: A Meta-Analysis and Descriptive Review of Single Case Research Design Studies

    Science.gov (United States)

    Whalon, Kelly J.; Conroy, Maureen A.; Martinez, Jose R.; Werch, Brittany L.

    2015-01-01

    The purpose of this review was to critically examine and summarize the impact of school-based interventions designed to facilitate the peer-related social competence of children with autism spectrum disorder (ASD). Reviewed studies employed a single-case experimental design, targeted peer-related social competence, included children 3-12 years old…

  3. Comparison of Bioclimatic, NDVI and Elevation variables in assessing extent of Commiphora wightii (Arnt.) Bhand.

    Science.gov (United States)

    Kulloli, R. N.; Kumar, S.

    2014-11-01

    Commiphora wightii (Arnt.) Bhand., is an important medicinal plant of Indian Medicine System (IMS) since ancient time. It is used in different ailments of obesity, arthritis, rheumatism and high cholesterol. Due to overexploitation its natural populations declined to large extent. IUCN has put it under Data Deficient (DD) category due to lack of data on its extent of occurrence in nature. Hence, the study was carried out using MaxEnt distribution modelling algorithm to estimate its geographic distribution and to identify potential habitats for its reintroduction. For modelling employed 68 presence locality data, 19 bioclimatic variables, Normalize Difference Vegetation Index (NDVI) and elevation data. These were tested for multicollinearity and those variables having r-value less than 0.8 were selected for further analysis, which was carried out in two ways i) Bioclimatic variables and elevation; ii) NDVI and elevation. Area Under the Curve (AUC) in both analysis was above 0.9 for all variables, indicating very high accuracy of prediction. Variables governing distribution of C. wightii in the analysis using bioclimatic and elevation data set are precipitation seasonality (56.6 %), annual precipitation (16.4 %) and elevation (14.7 %). Extent of occurrence of C.wightii predicted by model closely matched in the districts of Jaisalmer and Barmer. In the second analysis elevation (48.3 %), NDVI of June (11.1 %) and August (11.2 %) contributed for NDVI and Elevation data set. NDVI of June corresponds to its leafing phase while NDVI of August to flowering phase. Area of its occurrence predicted for NDVI and elevation data set are Bikaner, Churu, Jhunjhunun some part of Jodhpur which are completely sandy, where C. wightii is totally absent. Extent of occurrence was also validated in ground survey. Potential areas for its reintroduction were identified as Jaisalmer and Barmer districts in Indian arid zone.

  4. Present and Future Human Thermal Bioclimatic Conditions and Impacts on Respiratory Admissions in Crete Island, Greece

    Science.gov (United States)

    Bleta, Anastasia; Nastos, Panagiotis

    2015-04-01

    The objective of this study is to assess and quantify the association between present and future human thermal bioclimatic conditions and daily counts of respiratory problems in Heraklion city, Crete Island, Greece. The bioclimatic conditions were analyzed in terms of the Physiologically Equivalent Temperature (PET) and Universal Thermal Climate Index (UTCI), which are two of the most popular human thermal indices based on the human energy balance. The PET and UTCI analysis was performed by the application of the bioclimate model, "RayMan", which is well-suited to calculate radiation fluxes and human biometeorological indices. Future changes in meteorological parameters such as air temperature, relative humidity, wind speed and cloudiness (used as input variables in the estimation of PET and UTCI) were derived by the simulations of the regional atmospheric climate model KNMI under SRES A1B, for the near (2021-2050) and far (2071-2100) future with respect to the reference period 1961-1990. Generalized linear models (GLM) with Poisson distribution were applied to the time series of daily numbers of outpatients (total, males and females) with respiratory problems against present and future bioclimatic changes, after controlling for possible confounders and adjustment for season and trends. The interpretation of the results of this analysis suggests a significant association between cold weather and increased respiratory admissions. For the near future, the projected increase of 1.6oC in PET may result in reducing the incidence of respiratory problemsby almost 3% against 7.5% in the far future, when PET is projected to increase by 4oC.

  5. Guide of the bio-climatic architecture; Guide de l'architecture bioclimatique

    Energy Technology Data Exchange (ETDEWEB)

    Liebard, A. [Observateur des Energies Renouvelables 75 - Paris (France); Herde, A. de [Universite Catholique de Louvain (UCL), Louvain-la-Neuve (Belgium)

    2004-07-01

    This guide is the part six of a fundamental course on the bio-climatic architecture. This part is devoted to the urban development and the sustainable development in Europe. The context and the definitions of a sustainable town are proposed in the first part. The second part deals with the today tools, as the environmental policies, the urban development and economy, the HQE (high environmental quality) approach and the renewable energies use in urban areas. The third part proposes some applications of a sustainable urbanization, a climatic town planing and the energy conservation. (A.L.B.)

  6. CISBAT 2007 - Design and renovation of building envelopes (bioclimatic architecture)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This is the second part of the proceedings of the 2007 CISBAT conference on Renewables in a changing climate, held in Lausanne, Switzerland. On the subject of sustainable building envelopes the following oral contributions are summarised: 'Flexible photovoltaics integrated in transparent membrane and pneumatic foil constructions', 'Development of a numerical thermal model for double skin facades', 'Thermal performance analysis for an electrochromic vacuum glazing with low emittance coatings', 'Challenging the public building sector: optimization of energy performance by sustainable strategies', 'Simulation of the thermal performance of a climate adaptive skin', 'Possibilities for upgrading prefabricated concrete building envelopes', 'Experimental study of airflow and heat transfer in a double skin facade with blinds', 'Energy efficiency of a glazing system - Case study: a dynamic glazing and double skin facades - the use of venetian blinds and night ventilation for saving energy on mediterranean climate'. Poster-sessions on the subject include 'Adaptive building envelopes design ', 'GRC facade panels in Brazil', 'Solar absorptance of building opaque surfaces', 'Evaluating the thermal behavior of exterior walls (in residential buildings of hot-dry climate of Yazd)', 'Energy performance of buildings and local energy policy: the case of new residential buildings in Greve in Chianti (Firenze)', 'Space heating and domestic hot water energy demand in high-level-insulation multi-storey buildings in Tuscany (Italy)', 'Is 2000 W society possible, affordable, and socially acceptable for the Vaud existing school building?', 'Development of simplified method for measuring solar shading performance of windows', 'Studies of ecological architecture in China's Loess Plateau region', 'Contemporary mud

  7. Design of heliodon of horizontal platform of bioclimatic arquitecture laboratory; Diseno del heliodon de plataforma horizontal del laboratorio de arquitectura bioclimatica

    Energy Technology Data Exchange (ETDEWEB)

    Rodriguez, V. M.; Fuentes, F. V.; Lazcano, G. L.

    2004-07-01

    A Heliodon is a device where we can simulate the effect of sun penetration inside a space and the shadow projections of buildings and shading devices for any combination of: location, hour, day, and period of the year. In such a way that nowadays, heliodons are a useful tool to visualize and calculate the effects of solar radiation on a facade, through fenestration or in the whole building. There is no doubt that they are an excellent didactic resource to train young architects. There are some proposals of heliodons commercially produced, which are focused on teaching of first cycle and having the purpose of bringing the understanding of solar movements. However, it is in the academic field where a new generation of heliodons is being produced. In this case they are focus on research and professional training. With this intention the Laboratory of Bioclimatic Architecture has been working on the design and construction of a heliodon with a fixed horizontal platform. (Author)

  8. The effect of virtual visual feedback on supernumerary phantom limb pain in a patient with high cervical cord injury: a single-case design study.

    Science.gov (United States)

    Katayama, Osamu; Iki, Hidemasa; Sawa, Shunji; Osumi, Michihiro; Morioka, Shu

    2015-01-01

    We characterized the effect of virtual visual feedback (VVF) on supernumerary phantom limb pain (SPLP) in a patient with high cervical cord injury. The subject was a 22-year-old man diagnosed with complete spinal cord injury (level C2) approximately 5 years ago. We applied the ABA'B' single-case design and set phases B and B' as intervention phases for comparison. SPLP significantly improved in comparison of phase A with phase B and phase A with phase B'. We suggest that VVF reduces SPLP and the effect lasts after VVF. PMID:25676730

  9. Cost-Benefit of the energy saving in the bioclimatic designs; Costo-Beneficio del ahorro de energia en los disenos bioclimaticos

    Energy Technology Data Exchange (ETDEWEB)

    Lopez P, J. Manuel A. [Doble Dos Soluciones de Negocios, S.A. de C.V., Mexico, D.F. (Mexico); Morillon G, David; Rodriguez V, Luis [Instituto de Ingenieria de la UNAM, Mexico, D.F. (Mexico)

    1999-07-01

    Tools and criteria for the Cost-Benefit analysis from the energy saving in bioclimatic designs (BD) are presented, for which, a reference project is established and the costs and benefits of energy saving in BD with base in that project are evaluated. A case study is presented taking as reference the traditional design of the air conditioning of a building and with this base the estimation of cost-benefit of the same building is made, but with passive systems. The tools used are those that allow to consider related resources such as time and money; in that sense, are used criteria such as: Present value (PV), Equivalent Annual Cost (EAC) and the Cost of the Conserved Energy (CCE). The costs related to the construction, maintenance and operation of the design are taken into account. The differences between the reference design and the BD, established from the application of these criteria, allow to evaluate the economic margin of the BD as far as operation and maintenance is concerned. Finally the CCE of the bioclimatic measures is evaluated as an initiative of energy saving and the present value is calculated of the energy saving in the entire useful life of a bioclimatic design. [Spanish] Se presentan herramientas y criterios para el analisis Costo-Beneficio del ahorro de energia en disenos bioclimaticos (DB), para lo cual, se establece un proyecto de referencia y se evaluan los costos y beneficios del ahorro de energia en DB con base en ese proyecto. Se presenta el estudio de un caso tomando como referencia el dise tradicional de la climatizacion de un edificio y con base en este, se realiza la estimacion de costos y beneficios del mismo edificio, pero con sistemas pasivos. Las herramientas usadas, son aquellas que permiten considerar recursos relacionados como son tiempo y dinero; en ese sentido, se usan criterios como: Valor Presente (VP), Costo Anual Equivalente (CAE) y el Costo de la Energia Conservada (CEC). Se toman en consideracion los costos relacionados

  10. Effectiveness of Trivalent Inactivated Influenza Vaccine in Children Estimated by a Test-Negative Case-Control Design Study Based on Influenza Rapid Diagnostic Test Results

    Science.gov (United States)

    Yamaguchi, Yoshio; Tomidokoro, Yuka; Sekiguchi, Shinichiro; Mitamura, Keiko; Fujino, Motoko; Shiro, Hiroyuki; Komiyama, Osamu; Taguchi, Nobuhiko; Nakata, Yuji; Yoshida, Naoko; Narabayashi, Atsushi; Myokai, Michiko; Sato, Masanori; Furuichi, Munehiro; Baba, Hiroaki; Fujita, Hisayo; Sato, Akihiro; Ookawara, Ichiro; Tsunematsu, Kenichiro; Yoshida, Makoto; Kono, Mio; Tanaka, Fumie; Kawakami, Chiharu; Kimiya, Takahisa; Takahashi, Takao; Iwata, Satoshi

    2015-01-01

    We assessed vaccine effectiveness (VE) against medically attended, laboratory-confirmed influenza in children 6 months to 15 years of age in 22 hospitals in Japan during the 2013–14 season. Our study was conducted according to a test-negative case-control design based on influenza rapid diagnostic test (IRDT) results. Outpatients who came to our clinics with a fever of 38°C or over and had undergone an IRDT were enrolled in this study. Patients with positive IRDT results were recorded as cases, and patients with negative results were recorded as controls. Between November 2013 and March 2014, a total of 4727 pediatric patients (6 months to 15 years of age) were enrolled: 876 were positive for influenza A, 66 for A(H1N1)pdm09 and in the other 810 the subtype was unknown; 1405 were positive for influenza B; and 2445 were negative for influenza. Overall VE was 46% (95% confidence interval [CI], 39–52). Adjusted VE against influenza A, influenza A(H1N1)pdm09, and influenza B was 63% (95% CI, 56–69), 77% (95% CI, 59–87), and 26% (95% CI, 14–36), respectively. Influenza vaccine was not effective against either influenza A or influenza B in infants 6 to 11 months of age. Two doses of influenza vaccine provided better protection against influenza A infection than a single dose did. VE against hospitalization influenza A infection was 76%. Influenza vaccine was effective against influenza A, especially against influenza A(H1N1)pdm09, but was much less effective against influenza B. PMID:26317334

  11. Macroevolutionary patterns of ultraviolet floral pigmentation explained by geography and associated bioclimatic factors.

    Science.gov (United States)

    Koski, Matthew H; Ashman, Tia-Lynn

    2016-07-01

    Selection driven by biotic interactions can generate variation in floral traits. Abiotic selection, however, also contributes to floral diversity, especially with respect to patterns of pigmentation. Combining comparative studies of floral pigmentation and geography can reveal the bioclimatic factors that may drive macroevolutionary patterns of floral color. We create a molecular phylogeny and measure ultraviolet (UV) floral pattern for 177 species in the Potentilleae tribe (Rosaceae). Species are similar in flower shape and visible color but vary in UV floral pattern. We use comparative approaches to determine whether UV pigmentation variation is associated with geography and/or bioclimatic features (UV-B, precipitation, temperature). Floral UV pattern was present in half of the species, while others were uniformly UV-absorbing. Phylogenetic signal was detected for presence/absence of pattern, but among patterned species, quantitative variation in UV-absorbing area was evolutionarily labile. Uniformly UV-absorbing species tended to experience higher UV-B irradiance. Patterned species occurring at higher altitudes had larger UV-absorbing petal areas, corresponding with low temperature and high UV exposure. This analysis expands our understanding of the covariation of UV-B irradiance and UV floral pigmentation from within species to that among species, and supports the view that abiotic selection is associated with floral diversification among species. PMID:26987355

  12. Climatic response variability and machine learning: development of a modular technology framework for predicting bio-climatic change in pacific northwest ecosystems"

    Science.gov (United States)

    Seamon, E.; Gessler, P. E.; Flathers, E.

    2015-12-01

    The creation and use of large amounts of data in scientific investigations has become common practice. Data collection and analysis for large scientific computing efforts are not only increasing in volume as well as number, the methods and analysis procedures are evolving toward greater complexity (Bell, 2009, Clarke, 2009, Maimon, 2010). In addition, the growth of diverse data-intensive scientific computing efforts (Soni, 2011, Turner, 2014, Wu, 2008) has demonstrated the value of supporting scientific data integration. Efforts to bridge this gap between the above perspectives have been attempted, in varying degrees, with modular scientific computing analysis regimes implemented with a modest amount of success (Perez, 2009). This constellation of effects - 1) an increasing growth in the volume and amount of data, 2) a growing data-intensive science base that has challenging needs, and 3) disparate data organization and integration efforts - has created a critical gap. Namely, systems of scientific data organization and management typically do not effectively enable integrated data collaboration or data-intensive science-based communications. Our research efforts attempt to address this gap by developing a modular technology framework for data science integration efforts - with climate variation as the focus. The intention is that this model, if successful, could be generalized to other application areas. Our research aim focused on the design and implementation of a modular, deployable technology architecture for data integration. Developed using aspects of R, interactive python, SciDB, THREDDS, Javascript, and varied data mining and machine learning techniques, the Modular Data Response Framework (MDRF) was implemented to explore case scenarios for bio-climatic variation as they relate to pacific northwest ecosystem regions. Our preliminary results, using historical NETCDF climate data for calibration purposes across the inland pacific northwest region

  13. Guide for a building energy label. Promoting bio-climatic and solar construction and renovation

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    Technically speaking, building experts have the knowledge to deal with thermal inertia of buildings, solar gains, insulation, efficient ventilation, and daylighting... to get low energy buildings that provide comfort for the users. Buildings should always be designed according to the specificities of the local climate, according to a ''solar and bio-climatic construction'' approach. It is not always possible to fully apply these principles, particularly in urban areas with high density. However, this is unacceptable to keep building with such errors as insufficient insulation and direct electrical heating, single glazing, thermal bridges, low efficiency heating systems. This guide aims at encouraging the building experts to take into account the energy efficiency. Implementing a building energy label will allow general public to be aware of this issue and then, and will then lead to develop better practices. (author)

  14. Vastu Shilpa Shastra: The ancient Indian, bioclimatically responsive science of building

    Energy Technology Data Exchange (ETDEWEB)

    Gupta, S.

    1999-07-01

    It is a known fact that the concept of bioclimatic architecture supports the cause of renewable energy technologies with the achieving of indoor thermal comfort employing minimum usage of active means (which consume non-renewable energy). Vastu Shastra, the ancient Indian science for architecture is a demonstration of such a climatically responsive technology. The merits of its counterparts, Feng Shui and Geomancy, are already well known to the western world. This paper attempts to introduce the principles of Vastu Shastra in the light of climatically responsive architecture. The site planning and orientation principles as suggested by the ancient Aryan settlers in their documentation of the Vastu Shastra in vedas are very consistent with the climatic intention of achieving comfort in built environment. The mental peace and prosperity of the inmates is translated as a function of thermal comfort achieved within the dwelling.

  15. Patterns and variability of projected bioclimatic habitat for Pinus albicaulis in the Greater Yellowstone Area.

    Directory of Open Access Journals (Sweden)

    Tony Chang

    Full Text Available Projected climate change at a regional level is expected to shift vegetation habitat distributions over the next century. For the sub-alpine species whitebark pine (Pinus albicaulis, warming temperatures may indirectly result in loss of suitable bioclimatic habitat, reducing its distribution within its historic range. This research focuses on understanding the patterns of spatiotemporal variability for future projected P.albicaulis suitable habitat in the Greater Yellowstone Area (GYA through a bioclimatic envelope approach. Since intermodel variability from General Circulation Models (GCMs lead to differing predictions regarding the magnitude and direction of modeled suitable habitat area, nine bias-corrected statistically down-scaled GCMs were utilized to understand the uncertainty associated with modeled projections. P.albicaulis was modeled using a Random Forests algorithm for the 1980-2010 climate period and showed strong presence/absence separations by summer maximum temperatures and springtime snowpack. Patterns of projected habitat change by the end of the century suggested a constant decrease in suitable climate area from the 2010 baseline for both Representative Concentration Pathways (RCPs 8.5 and 4.5 climate forcing scenarios. Percent suitable climate area estimates ranged from 2-29% and 0.04-10% by 2099 for RCP 8.5 and 4.5 respectively. Habitat projections between GCMs displayed a decrease of variability over the 2010-2099 time period related to consistent warming above the 1910-2010 temperature normal after 2070 for all GCMs. A decreasing pattern of projected P.albicaulis suitable habitat area change was consistent across GCMs, despite strong differences in magnitude. Future ecological research in species distribution modeling should consider a full suite of GCM projections in the analysis to reduce extreme range contractions/expansions predictions. The results suggest that restoration strageties such as planting of seedlings and

  16. Bioclimatic comfort and the thermal perceptions and preferences of beach tourists

    Science.gov (United States)

    Rutty, Michelle; Scott, Daniel

    2015-01-01

    The largest market segment of global tourism is coastal tourism, which is strongly dependent on the destination's thermal climate. To date, outdoor bioclimatic comfort assessments have focused exclusively on local residents in open urban areas, making it unclear whether outdoor comfort is perceived differently in non-urban environments or by non-residents (i.e. tourists) with different weather expectations and activity patterns. This study provides needed insight into the perception of outdoor microclimatic conditions in a coastal environment while simultaneously identifying important psychological factors that differentiate tourists from everyday users of urban spaces. Concurrent micrometeorological measurements were taken on several Caribbean beaches in the islands of Barbados, Saint Lucia and Tobago, while a questionnaire survey was used to examine the thermal comfort of subjects ( n = 472). Universal Thermal Climate Index (UTCI) conditions of 32 to 39 °C were recorded, which were perceived as being "slightly warm" or "warm" by respondents. Most beach users (48 to 77 %) would not change the thermal conditions, with some (4 to 15 %) preferring even warmer conditions. Even at UTCI of 39 °C, 62 % of respondents voted for no change to current thermal conditions, with an additional 10 % stating that they would like to feel even warmer. These results indicate that beach users' thermal preferences are up to 18 °C warmer than the preferred thermal conditions identified in existing outdoor bioclimatic studies from urban park settings. This indicates that beach users hold fundamentally different comfort perceptions and preferences compared to people using urban spaces. Statistically significant differences ( p ≤ .05) were also recorded for demographic groups (gender, age) and place of origin (climatic region).

  17. Compact ignition tokamak design studies

    Energy Technology Data Exchange (ETDEWEB)

    1986-01-01

    Viewgraphs are given on the following objectives of the design study: (1) develop core module concept, (2) develop a method to apply preload, (3) perform sufficient analysis to demonstrate total concept is structurally sound, (4) develop component fit-up and assembly scheme, and (5) minimize size and cost. (MOW)

  18. Effects of Water Stress on Germination in Six Provenances of Pinus brutia Seeds from Different Bioclimatic Zones in Turkey

    OpenAIRE

    Boydak, Melih; DİRİK, Hüseyin; TİLKİ, Fahrettin; ÇALIKOĞLU, Mehmet

    2003-01-01

    The effects of water potential on germination were studied in six provenances of Pinus brutia from different bioclimatic zones in Turkey. Water potentials between 0 and -8 bars were obtained using polyethylene glycol 6000 (PEG-6000) solutions. Seeds were kept for 28 d in light (12 h photoperiod at 1000 lux) and at 20 ± 0.5 oC. A decrease in water potential produced a marked reduction in germination percentage, germination speed and germination value. Significant variations between the provena...

  19. Bioclimatic reabilitation on mixt construction house buldings, a case study in Lisbon

    OpenAIRE

    Ribeiro, José Pedro Barros Sousa

    2007-01-01

    Mestrado em Reabilitação Bioclimática em Edifícios de Habitação de Construção Mista, um caso de estudo em Lisboa Tese de Mestrado em Arquitectura Bioclimática O presente estudo tem por objectivos contribuir para uma metodologia de trabalho na área de reabilitação de edifícios que incorpore princípios da arquitectura bioclimática no seu processo. São esses, a análise do contexto local, as condições climáticas, a disponibilidade e orientação solar, o desempenho energético e conforto ambie...

  20. La ordenanza bioclimática de Tres Cantos, Madrid. Últimos avances en planificación ambiental y sostenible./ The ordinance bioclimatic Tres Cantos, Madrid. Recent developments in environmental planning and sustainable.

    Directory of Open Access Journals (Sweden)

    Higueras García, Ester

    2009-06-01

    Full Text Available Aunque es de todos reconocida la importancia de planificar con criterios ambientales, son muy pocos los casos en los que estos criterios pasan de los objetivos a las propuestas. En el caso de la localidad de Tres Cantos (Madrid se ha obtenido un importante reto: la aprobación de una ordenanza, denominada Ordenanza Bioclimática, que impulsa el desarrollo urbano equilibrado con su territorio, reduce los consumos de suelo y agua, es respetuosa con el paisaje e incentiva la edificación bioclimática frente a otras convencionales./Despite the well-known relevancy of environmental criteria relating to urban planning, they often remain as objectives and do not become proposals. In the case of Tres Cantos, an important challenge has been proposed: the approval of an ordinance, called Bioclimatic Ordinance, that promotes a proportional urban development relating to the territory, that reduces the use of ground and water, that is respectful towards the landscape and encourages bioclimatic construction against the traditional one.

  1. Environmental psychology in the bioclimatic design; La psicologia ambiental en el diseno bioclimatico

    Energy Technology Data Exchange (ETDEWEB)

    Cubillas Talamante, Lorena Gpe [Facultad de Arquitectura, Universidad Autonoma de Baja California, Mexicali, Baja California (Mexico)

    2005-07-01

    The bioclimatic design profits of the natural resources for the improvement of the construction quality as well as the user's life. The combination of these two concepts within the architectonic design generates an interesting duality to consider within the understanding of the user's physical and psychological environment and the obtaining of a correlation of reality and dreams. Environmental psychology is focused on the researching of the psychological effects of the architectonic environment on the human experience and behavior. Human behavior works under parameters established during its development. Through the habits and styles of life practiced in childhood those parameters establish themselves to later on obtain satisfiers in the search of the life quality of human beings. [Spanish] El diseno bioclimatico aprovecha los recursos naturales para el mejoramiento de la calidad de la construccion y vida del usuario. La combinacion de estos dos conceptos dentro del diseno arquitectonico, genera dualidad interesante de entender el medio ambiente fisico y psicologico de los usuarios y obtener una identificacion entre la realidad y los suenos. La psicologia ambiental se ha enfocado a investigar sobre la relacion de los efectos psicologicos del ambiente construido o arquitectonico sobre la conducta y la experiencia humana. La conducta humana trabaja bajo parametros establecidos durante el desarrollo del mismo, a traves de los habitos y estilos de vida desde su infancia van marcando esos parametros que despues sirven para lograr satisfactores en la busqueda de la calidad de vida de los seres humanos.

  2. Comparison between Vegetation and Rainfall of Bioclimatic Ecoregions in Central Africa

    Directory of Open Access Journals (Sweden)

    Sonfack Rousvel

    2013-11-01

    Full Text Available This paper investigates the relationship between the Normalized Difference Vegetation Index (NDVI and extracted rainfall in the Global Precipitation Climatology Project (GPCP in Central Africa between latitudes 15°S and 20°N and longitudes 0°E and 31°E. Monthly NDVI and GPCP datasets for the period 1982–2000 have been used. The Index of Segmentation of Fourier Components (ISFC has been applied on the NDVI dataset to segment Central Africa into four bioclimatic ecoregions (BCERs. In order to compare the differential response of vegetation growth to rainfall, an analysis of the inter-annual, intra-annual and seasonal variability for each BCER has been carried out, and the correlations between NDVI and rainfall have been assessed. The plot of the annual cycles of both variables revealed a coherent onset, peak and decay, with a time lag of 1 month for almost all the zones, except the zones, semi-desert and steppe, where a season of short and intense rainfall was observed. The correlation coefficients computed between the two variables are relatively high, especially in brush-grass savannah, where they reach up to 0.90 at a time lag of 1 month. The phenological transition points and phases show that the range between the +1 and

  3. The Importance of Biotic vs. Abiotic Drivers of Local Plant Community Composition Along Regional Bioclimatic Gradients.

    Directory of Open Access Journals (Sweden)

    Kari Klanderud

    Full Text Available We assessed if the relative importance of biotic and abiotic factors for plant community composition differs along environmental gradients and between functional groups, and asked which implications this may have in a warmer and wetter future. The study location is a unique grid of sites spanning regional-scale temperature and precipitation gradients in boreal and alpine grasslands in southern Norway. Within each site we sampled vegetation and associated biotic and abiotic factors, and combined broad- and fine-scale ordination analyses to assess the relative explanatory power of these factors for species composition. Although the community responses to biotic and abiotic factors did not consistently change as predicted along the bioclimatic gradients, abiotic variables tended to explain a larger proportion of the variation in species composition towards colder sites, whereas biotic variables explained more towards warmer sites, supporting the stress gradient hypothesis. Significant interactions with precipitation suggest that biotic variables explained more towards wetter climates in the sub alpine and boreal sites, but more towards drier climates in the colder alpine. Thus, we predict that biotic interactions may become more important in alpine and boreal grasslands in a warmer future, although more winter precipitation may counteract this trend in oceanic alpine climates. Our results show that both local and regional scales analyses are needed to disentangle the local vegetation-environment relationships and their regional-scale drivers, and biotic interactions and precipitation must be included when predicting future species assemblages.

  4. Renewable energy implementation in bioclimatic architecture: twenty years own experience in Belgium

    Energy Technology Data Exchange (ETDEWEB)

    Gillett, A.C.

    2000-07-01

    Since its first conception of our own solar house, in 1979, our company has been eager to implement different aspects of renewable energy in every project studied. Among them, we gained experience and developed model in the following applications: application of advanced radiative thermal comfort principle in the choice of architectural solutions. Application of innovative ideas in bioclimatic design: (sensible versus latent heat, thermal mass of materials, thermoconvective air movements, natural passive daylighting and ventilation, shape and orientation of building). Solar collector integrated on- or in-roof. Bare solar collector associated with heat pump heating (solar roof and solar edge). Thermal use of sub-soil for storage and retrieval of heat and as natural cold source of heat pump. Radiant floor heating and ceiling cooling of dwellings. Systematic use of heat pump principles with natural refrigerant, direct expansion evaporator and in-floor condenser. Application of the thermal diode principle for passive heat transfer in heating and cooling of buildings. Retrieval of lost industrial energy for heating of premises. (author)

  5. The analysis of impact of urbanization on the bioclimatic conditions in the scale of Ankara

    Directory of Open Access Journals (Sweden)

    Necla Türkoğlu

    2012-05-01

    Full Text Available Normal 0 21 false false false TR X-NONE X-NONE In this study the biclimatological conditions of Ankara urban area have been analyzed from the data which has been acquired from areas having different land cover and use. The hourly thermal perceptions of six meteorology stations have been calculated by using the physiologically equivalent temperature (PET index that could involve not only the meteorological parameters but also human energy balance in calculations. The spatial distribution of values has been carried out by the multiple linear regression models. At the end of the analyses it is concluded that the areas which have higher built density in urban have greater PET values than the other land use classes during the most of the day. These daily mean PET difference between these areas and the grasslands is 0.4°C -1.2°C, the parks is 2.2°C-3°C, suburban is 1.4°C -2.2°C, rural is 1.7°C -2.5°C. The differences increase during night and from May to September, and decrease during daytime and from October to April. Keywords: Thermal perception, bioclimatic conditions, land use, physiologically equivalent temperature, Ankara.

  6. Bioclimatic Matching Analysis for Epiblema strenuana (Lepidoptera:Tortricidae) in China

    Institute of Scientific and Technical Information of China (English)

    MA Jun; WAN Fang-hao; Guo Jian-ying; YOU Lan-shao

    2003-01-01

    The phytophagous insect, Epiblema strenuana, is an effective biocontrol agent against Am-brosia and Parthenium, and was introduced to China in 1990 to control Ambrosia artemisiifolia. After asmall scale release in Hunan Province, E. strenuana established and begun to spread. Host specificity andfeeding studies in Hunan have indicated that there are four host plants in China, A. artemisiifolia, A. trifi-da, Xanthium sibiricum and Parthenium hysterophorus. These plants are all weeds that need to be con-trolled. However, there are still some different views among scientists about the merits of this release becauseof potential effects on non-target species such as Helianthus annuus, and uncertainty about climatic suitabili-ty. To address these concerns, the CLIMEX system was used to predict the possibility of establishment of E.strenuana with A. artemisii f olia , A. tri fida , and P. hysterophorus at 85 meteorological locations. Also,the probability of E. strenuana co-establishing with A. artemisiifolia, A. trifida or P. hysterophorus wasevaluated quantitatively by bioclimatic risk index (BCRI) transferred from ecoclimate index (EI). Moreover,the hypothetical adaptation of E. strenuana to H. annuus as a host, were evaluated by bioclimate matching.These results help to predict the potential spread of A. artemisiifolia, A. trifida, P. hysterophorus and e-valuate the merits of further releases of E. strenuana in China.

  7. Present and future bioclimatic conditions of importance to tourism over the Mediterranean

    Science.gov (United States)

    Nastos, Panagiotis T.; Zerefos, Christos S.; Kapsomenakis, Ioannis N.; Douvis, Kostas; Konsta, Dimitra; Matzarakis, Andreas

    2014-05-01

    This work presents the results of changes of thermal comfort indices in the Mediterranean region and on time scales from seasonal to multi-decadal. The results are based on 6-hourly time series of the Physiological Equivalent Temperature (PET) and the Universal Thermal Climate Index (UTCI) in the Mediterranean. The two indices were calculated from 6-hourly meteorological parameters, acquired from the ERA-Interim ECMWF reanalysis records. Future climate change conditions were analyzed using the results of four regional climate simulations from the ENSEMBLES project. Two future periods are considered, 2021-2050 and 2071-2100 under the A1B scenario, in comparison to the reference period 1961-1990. Both the PET and UTCI analysis was performed using the radiation and bioclimate model, "RayMan", which is well-suited to calculate radiation fluxes and human biometeorological indices. In addition to the spatial and temporal analysis of the bioclimatic indices, for both the present and the future, concerning the Mediterranean tourism potential, a new approach in Climate-Tourism assessment was applied, namely the Climate-Tourism-Information-Scheme (CTIS), at representative tourist destinations in the Mediterranean. CTIS integrates and simplifies climate information for tourism in a convenient and easy to understand way which can be used by individual tourists and by local authorities responsible for tourism and health.

  8. The Determine of the Mashad Bioclimatic Condition Base on Hourly Data

    Directory of Open Access Journals (Sweden)

    M. Montazeri

    2013-01-01

    hourly time (06, 12 and 16 UTC from 20 years period (1988-2007.The pet index derived the Munich energy balance model for individuals” (MEMI (Höppe 1993 is such a thermo-physiological heat balance model. It is the basis for the calculation of the physiologically equivalent temperature (PET.In detail the MEMI model is based on the energy balance equation (9.1 for the human body: M +W + R +C + E D + E Re + E Sw + S = 0The individual heat flows in Eq. 9.1, are controlled by the following meteorological parameters (Verein Deutscher Ingenieure 1998; Höppe 1999:– Air temperature: C, Ere – Air humidity: ED, ERe, ESw – Wind velocity: C, ESw – Mean radiant temperature: RThermo-physiological parameters are required in addition:– Heat resistance of clothing (clo units – Activity of humans (in WattThe following assumptions are made for the indoor reference climate:– Mean radiant temperature equals air temperature (Tmrt = Ta.2– Air velocity (wind speed is fixed at v = 0.1 m/s. 3– Water vapor pressure is set to 12 hPa (approximately equivalent to a relative humidity of 50% at Ta = 20°C.In this research, the calculations of PET index have been done using Reymen 2.1 software. Addition of Bioclimatic assessment (climate comfort, heat stress and cold stress calculated frequency physical event (contain precipitation, frost, storm … and aesthetic event(cloudy, sunshine and ... that effect on the comfort climate3- DiscussionAccording to the obtained result, bioclimatic condition in Mashhad is very deferent in the through year. Though Mashhad experienced extreme cold stress during the winter season, never the less in the June and July was very heat stress. Comfortable climate period for 9:30 and 15:30 local time in Mashhad is short and located in the second separated period in the early spring and autumn .however; the first period is longer than the second period.During to the hours study, the most of the comfortable climate condition has been done with 59 frequency in

  9. 生物气候建筑的跨专业整合设计%Multidisciplinary approach to integrated design of bioclimatic architecture

    Institute of Scientific and Technical Information of China (English)

    赵继龙; 刘甦; 唐一峰

    2011-01-01

    从生物气候建筑的内涵特征出发,对设计实践的现实困境进行了剖析,提出需要采用跨专业整合设计的方法才能有效实现生物气候性能目标;认为自然通风设计、被动式太阳能设计和自然采光设计是生物气候建筑跨专业整合设计的关键内容;跨专业设计团队、技术咨询合作、建筑师个人知识融合与工具辅助整合构成了生物气候建筑设计跨专业知识融合与设计整合的四种模式.%Beginning with the understanding of the meaning and characteristics of bioclimatic architecture, the paper analyzes the difficulties in bioclimatic design practice, and proposes the multidisciplinary integrated design process for the necessary approach to reach bioclimatic performances.The design of natural ventilation, passive solar and skylight are the key issues of integrated bioclimatic design.Multidisciplinary design team, technical advisory cooperation, the architect's knowledge fusion and integration by simulation tools are the four modes of multidisciplinary integrated bioclimatic design.

  10. Using the landscape for passive cooling and bioclimatic control : applications for higher density and larger scale

    Energy Technology Data Exchange (ETDEWEB)

    Sandifer, S.A. [California Univ., Los Angeles, CA (United States)

    2009-07-01

    In hot climates, vegetation surrounding buildings has the ability to improve human comfort through passive cooling. Landscape elements such as shade trees, vines on pergolas and vines grown on walls are an economical means to provide effective shading of exterior surfaces. As living systems in the built environment, landscape elements perform multiple functions. They convert carbon dioxide to oxygen, sequester carbon in their tissues, filter surface water, provide habitat for birds and other wildlife, and can provide food for people and animals. Finally, the aesthetic value that the living landscape provides for people in an increasingly urbanized world may be the most important benefit of all. Most designers are familiar with the use of the landscape as part of a passive cooling strategy for single family homes. This paper described a series of experiments that were conducted on several less well studied elements of the landscape, notably vines, vegetated roofs and landscape ponds. Field studies and laboratory experiments were conducted to determine the effects of vines grown against walls on building surface temperature; the effects of vines grown on pergolas and trellis systems on both building surface and air temperature; the effect of sod and other vegetated roof types on roof temperature; the effect of aquatic vegetation on water temperature of ponds; and the ability of vine shaded ponds to reduce temperature in interior spaces. Results revealed that all of the strategies have the potential to reduce heat gain significantly and perform well as bioclimatic elements in cooling strategies for buildings. Since landscape ponds and vegetated roofs can function as passive cooling systems, they also have the potential to reduce average indoor temperatures to below the outdoor average. Landscape strategies can be used to make new buildings perform well in hot climates, but may be even more valuable in improving the performance of existing buildings. The strategies

  11. Climatic spatial variability in Extremadura (Spain) based on viticultural bioclimatic indices

    Science.gov (United States)

    Moral, F. J.; Rebollo, F. J.; Paniagua, L. L.; García, A.

    2014-12-01

    The evaluation of general suitability for viticulture in wine regions requires a knowledge of the spatial variation in temperature, which is also used to assess different grapevine cultivars and to delimit appropriate zones for winegrape production. However, usually temperature data and methods applied to properly delineate homogeneous areas are not adequate to generate accurate maps. With the aim of providing an analysis using four temperature-based indices, quantifying their spatial variability, and representing the spatial pattern of each index throughout Extremadura, one of the most important Spanish wine regions, temperature data from 117 meteorological stations, considering the 1980-2011 period, were utilized. The statistical properties of each index were assessed and, later, they were mapped by means of an integrated geographic information system (GIS) and a multivariate geostatistics (regression-kriging) approach. Results show that heat-sum temperature indices were highly related to the more simple growing season temperature; however, temperature regime differences varied upon which index was employed. The spatial variability of climate within Extremaduran natural regions (NR) is significant; although the warmer conditions predominate, some NR have part of their territory by up to eight climate classes. This information enables a better understanding of the viticulture suitability within each NR and delineating homogeneous zones. The use of consistent bioclimatic indices and an advanced geostatistical algorithm have made it possible to delimit and compare within-region climates and also enabled comparisons of Extremaduran NR with others worlwide, which should be taken into account to select varieties and assess the possibilities of producing new wines.

  12. Cost-benefit of energy saving in bioclimatic designs; Costo-beneficio del ahorro de energia en los disenos bioclimatios

    Energy Technology Data Exchange (ETDEWEB)

    Lopez P, J. Manuel A. [Doble dos soluciones de Negocios (Mexico); Morillon G, David; Rdriguez V, Luis [Universidad Autonoma de Mexico (Mexico)

    2001-06-01

    Tools and criteria for Cost-Benefit Analysis (ACB) of energy saving in bioclimatic designs (DB) are presented, for which a reference project is established. Based on the traditional design of air conditioning of a building and with the support of this one, the estimation of costs and benefits of the same building is made; but with passive systems. The tools used consider related resources such as time and money. Criteria are used such as: Present value (VP), Equivalent Annual Cost (EAC) and the Cost of the conserved Energy (CEC). The costs related to the construction, maintenance and operation of the design are taken into consideration. The differences between the design of reference and the Bioclimatic Design, established from the application of these criteria, allow evaluating the economic margin as far as operation and maintenance. Finally, the cost of the conserved energy of the bioclimatic measures is evaluated as an initiative for energy saving and calculates the present value from them in all of the period of useful life of the bioclimatic design. [Spanish] Se presentan herramientas y criterios para el analisis Costo-Beneficio (ACB) del ahorro de energia en los disenos bioclimaticos (DB), para lo cual se establece un proyecto de referencia. Basado en el diseno tradicional de la climatizacion de un edificio y con apoyo en este, se realiza la estimacion de costos y beneficios del mismo edificio; pero con sistema pasivos. Las herramientas usadas consideran recursos relacionados como son tiempo y dinero. Se usan criterios tales como: Valor Presente (VP), Costo Anual Equivalente (CAE) y el Costo de la Energia conservada (CEC). Se toman en consideracion los costos relacionados con la construccion, mantenimiento y operacion del diseno. Las diferencias entre el diseno de referencia y el Diseno Bioclimatico, establecidas a partir de la aplicacion de estos criterios, permiten evaluar el margen economico en cuanto a la operacion y el mantenimiento. Finalmente, se

  13. Data Paper – High-Resolution Topographic and Bioclimatic Data for the Southern Western Ghats of India (IFP_ECODATA_BIOCLIM)

    OpenAIRE

    Renard, Quentin; Muthusankar, G.; Pelissier, Raphaël

    2009-01-01

    The Western Ghats form a 1,600 km long escarpment that runs parallel to the southwestern coast of Peninsular India. This relief barrier, which orographically exacerbate the summer monsoon rains, is responsible for steep bioclimatic gradients that have long been recognized as one of the major ecological determinants for the forest vegetation of the region. We report here gridded topographic and bioclimatic data at 30' lat/lon (ca. 1 km) resolution that cover an area of about 70,000 km2 of the ...

  14. Social and environmental impact of the bioclimatic design; Impacto social y ambiental del diseno bioclimatico

    Energy Technology Data Exchange (ETDEWEB)

    Lopez P, J. Manuel A; Morrillon G, David; Rodriguez V, Luis [Instituto de Ingenieria de la UNAM, Mexico, D.F. (Mexico)

    2000-07-01

    This article is about two important scopes of the Bioclimatical Design (BD), the Social scope and the environmental scope. As an introduction, it is justified the importance of this topic through the association of the BD in the context of sustainability with our country's economic model. The analysis is done under the perspective of effects of the BD on social and environmental scopes. In social scope is used the Cost and Benefit Analysis according to social evaluation. In environmental scope, effects in water, air and ground are studied, but the measurement is done according to the emissions reduction of CO{sub 2} on atmosphere because of the earn on energy consumption. The results of the measurement of this effects are related with economical costs and benefits, which may show a general view about economical, social and environmental scopes. As conclusions, interest results are show and this is proposed to incorporate them in the economical politics. [Spanish] En este articulo se tocan dos aspectos importantes del Diseno Bioclimatico (DB), el Impacto Social y el Impacto Ambiental. En la introduccion se justifica la importancia del tema, asociando el DB en el contexto de la sustentabilidad, con el modelo economico que se ha imperado en nuestro pais. El estudio se realiza bajo la perspectiva de los impactos que el DB tiene en el aspecto social y en el ambiental. En lo social, se recurre a la metodologia del Analisis Costo-Beneficio para evaluacion Social, en lo ambiental, aunque se tocan los puntos de impacto en aire, agua y uso de suelo, la medicion del impacto se realiza con base en la disminucion de emisiones de CO{sub 2} a la atmosfera por el ahorro en el consumo de energia electrica. Los resultados de la medicion de impactos se cruzan con los costos y beneficios economicos, para presentar un panorama completo en cuanto a aspectos economicos, sociales y ambientales. En las conclusiones se rescatan los resultados de interes y se proponen las inserciones de

  15. Genetic structure and bio-climatic modeling support allopatric over parapatric speciation along a latitudinal gradient

    Directory of Open Access Journals (Sweden)

    Rossetto Maurizio

    2012-08-01

    an optimum number of five clusters corresponding to the four recognised species with the additional division of T. speciosissima into populations north and south of the Shoalhaven River valley. Unexpectedly, the northern disjunct population of T. oreades grouped with T. mongaensis and was identified as a hybrid swarm by the Bayesian assignment test implemented in NewHybrids. Present day and LGM environmental niche models differed dramatically, suggesting that distributions of all species had repeatedly expanded and contracted in response to Pleistocene climatic oscillations and confirming strongly marked historical distributional gaps among taxes. Conclusions Genetic structure and bio-climatic modeling results are more consistent with a history of allopatric speciation followed by repeated episodes of secondary contact and localised hybridisation, rather than with parapatric speciation. This study on Telopea shows that the evidence for temporal exclusion of gene flow can be found even outside obvious geographical contexts, and that it is possible to make significant progress towards excluding parapatric speciation as a contributing evolutionary process.

  16. A comparative simple method for human bioclimatic conditions applied to seasonally hot/warm cities of Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Tejeda Martinez, A. [Universidad Veracruzana, Xalapa, Veracruz (Mexico); Garcia Cueto, O.R. [Universidad Autonoma de Baja California, Mexicali, B.C. (Mexico)

    2002-01-01

    The climate of a region is an environmental resource with important implications for things such as thermal comfort, health and productivity of the population. In this work, the bioclimatic comfort was evaluated for seven seasonally warm/hot cities of Mexico by means of the following current indexes: Discomfort Index, Enthalpy Index and Heat Strain Index. Also, the periods during which it is necessary to use air conditioning in the studied cities were calculated from estimated global radiation and hourly data of temperature and relative humidity which made it possible to establish them with high precision. Finally, the useful of the Heat Strain Index is shown. It is a simple index needing available meteorological data to compare bioclimatic conditions of similar sites. [Spanish] El clima regional tiene implicaciones en el confort, la salud y la productividad de la poblacion. En este articulo se presentan las evaluaciones bioclimaticas comparativas de siete ciudades calidas de Mexico. Se aplicaron los indices bioclimaticos de disconfort, entalpia y esfuerzo frente al calor. Se calcularon los periodos para los cuales es necesario el uso de aire acondicionado, a partir de estimaciones de radiacion solar global y de temperatura y humedad horarias medias mensuales. Finalmente se muestra la utilidad y calidad del Indice de esfuerzo frente al calor, el cual requiere solo de datos climatologicos comunes para poder comparar condiciones bioclimaticas de sitios similares.

  17. Review of the physiology of human thermal comfort while exercising in urban landscapes and implications for bioclimatic design

    Science.gov (United States)

    Vanos, Jennifer K.; Warland, Jon S.; Gillespie, Terry J.; Kenny, Natasha A.

    2010-07-01

    This review comprehensively examines scientific literature pertaining to human physiology during exercise, including mechanisms of heat formation and dissipation, heat stress on the body, the importance of skin temperature monitoring, the effects of clothing, and microclimatic measurements. This provides a critical foundation for microclimatologists and biometeorologists in the understanding of experiments involving human physiology. The importance of the psychological aspects of how an individual perceives an outdoor environment are also reviewed, emphasizing many factors that can indirectly affect thermal comfort (TC). Past and current efforts to develop accurate human comfort models are described, as well as how these models can be used to develop resilient and comfortable outdoor spaces for physical activity. Lack of suitable spaces plays a large role in the deterioration of human health due to physical inactivity, leading to higher rates of illness, heart disease, obesity and heat-related casualties. This trend will continue if urban designers do not make use of current knowledge of bioclimatic urban design, which must be synthesized with physiology, psychology and microclimatology. Increased research is required for furthering our knowledge on the outdoor human energy balance concept and bioclimatic design for health and well-being in urban areas.

  18. Impact of autovehicular density and bioclimatic conditions on the qualitative and quantitative characters of azadirachta indica a juss

    International Nuclear Information System (INIS)

    The impact of auto-vehicular pollution on the qualitative and quantitative characteristics of Azadirachta indica A. Juss. growing along different polluted roads of Karachi was evaluated. Reductions in leaves parameters such as leaf area, leaf fresh and dry weight of A. indica were observed at University Campus, University Road, Board Office Road, Shaheed-e-Millat Road and Shahrah-e-Faisal during different seasons of the years from, 2008-2009. Some visual observations as leaf color, fruit and seed production were also recorded periodically, which showed variation at different sites. Results indicated that A. indica at control site were growing as fast as they were given the favorable resources such as bio-climatic factors which include heat index, chill, humidity, temperature and wind speed naturally available to them but road-side pollution stressed the growth. Climatic conditions were comparatively different on the city roads as compared to the University Campus. The automobiles density has significantly (p<0.05) reduced the leaf area of A. indica at Shahrah-e-Faisal in summer season (July, 2008). The soil of the studied area showed a high percentage of CaCO/sub 3/, slightly alkaline pH, electrical conductivity (E.C.), total dissolved salts (T.D.S.) in city roads as compared to University Campus soil. These findings demonstrated that traffic density and harsh bio-climatic conditions showed poor appearance and reduction in the qualitative characters and biomass of A. indica. (author)

  19. Topographic, bioclimatic, and vegetation characteristics of three ecoregion classification systems in North America: Comparisons along continent-wide transects

    Science.gov (United States)

    Thompson, R.S.; Shafer, S.L.; Anderson, K.H.; Strickland, L.E.; Pelltier, R.T.; Bartlein, P.J.; Kerwin, M.W.

    2005-01-01

    Ecoregion classification systems are increasingly used for policy and management decisions, particularly among conservation and natural resource managers. A number of ecoregion classification systems are currently available, with each system defining ecoregions using different classification methods and different types of data. As a result, each classification system describes a unique set of ecoregions. To help potential users choose the most appropriate ecoregion system for their particular application, we used three latitudinal transects across North America to compare the boundaries and environmental characteristics of three ecoregion classification systems [Ku??chler, World Wildlife Fund (WWF), and Bailey]. A variety of variables were used to evaluate the three systems, including woody plant species richness, normalized difference in vegetation index (NDVI), and bioclimatic variables (e.g., mean temperature of the coldest month) along each transect. Our results are dominated by geographic patterns in temperature, which are generally aligned north-south, and in moisture, which are generally aligned east-west. In the west, the dramatic changes in physiography, climate, and vegetation impose stronger controls on ecoregion boundaries than in the east. The Ku??chler system has the greatest number of ecoregions on all three transects, but does not necessarily have the highest degree of internal consistency within its ecoregions with regard to the bioclimatic and species richness data. In general, the WWF system appears to track climatic and floristic variables the best of the three systems, but not in all regions on all transects. ?? 2005 Springer Science+Business Media, Inc.

  20. Bioclimatic buildings of 16 houses in Pozuelo de Alarcon (Madrid); Edificio bioclimatico de 16 viviendas de promocion publica pra jovenes en Pozuelo de Alarcon. (Madrid)

    Energy Technology Data Exchange (ETDEWEB)

    Yanez, G.; Yanez-Lopez del Amo, L.

    2004-07-01

    We present in this article a housing building for young people recently built for the Autonomous Administration of Madrid in Pozuelo de Alarcon in which have been applied some bioclimatic and energy efficiency techniques. In this communication are described the main architectural features and are exposed some of the estimated results of energy saving and reduction of Co2. (Author)

  1. Spiral 2: preliminary design study

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-11-15

    The scientific council of GANIL asked to perform a comparative study on the production methods based on gamma induced fission and rapid-neutron induced fission concerning the nature and the intensity of the neutron-rich products. The production rate expected should be around 10{sup 13} fissions per second. The study should include the implantation and the costs of the concerned accelerators. The scientific committee recommended also to study the possibility to re-inject the radioactive beams of SPIRAL-II in the cyclotrons available at GANIL in order to give access to an energy range from 1.7 to 100 MeV/nucleon. For that purpose, some study groups have been formed to evaluate the possibility of such a project in the different components: physics case, target-ion sources, drivers, post-acceleration and general infrastructure. The organization of the project study is given at the end of this report. The following report presents an overview of the study. Particularly the total costs have been assessed according to 3 options for the driver: 38.0*10{sup 6} euros for a 40 MeV deuteron linac, 18.7*10{sup 6} euros for a 45 MeV electron linac, and 29.1*10{sup 6} euros for a 80 MeV deuteron cyclotron.

  2. Bioclimatic analysis and its impact within the design methodology; Analisis bioclimatico y su impacto dentro de la metodologia de diseno

    Energy Technology Data Exchange (ETDEWEB)

    Fuentes Fleixanet, Victor A; Rodriguez Viqueira Manuel [Universidad Autonoma Metropolitana Azcapotzalco, Mexico, D.F(Mexico)

    2000-07-01

    This paper is a proposal for the systematization of the process of bioclimatic design, particularly in its analytical stage. It is based on the proposals of the classic researchers such as: Olgyay, Givoni and Szokolay, but also in new contributions like those of Yeang. Nevertheless, it is about a methodology adapted to the specific requirements of teaching and research that are carried out in the Bioclimatic Design Laboratory of the Universidad Autonoma Metropolitana, Azcapotzalco Unit. What is presented here is a part of a very ample research project that intends to develop or to structure a design methodology that incorporates the environmental variables related to man and architecture: of course, with the objective of facilitating the designer work so that the final architectonic product has a more harmonic response to the environment, offers conditions of integral well- being to its occupants and be is efficient in the handling of the resources. It also looks for the definition of the necessary analysis, design and evaluation tools, necessary in order that the application of the methodology is clear, simple and can be carried out by any designer, even if he does not have a wide knowledge of bioclimatic design. [Spanish] Este trabajo es una propuesta para la sistematizacion del proceso de diseno bioclimatico, particularmente en su etapa analitica. Se basa en las propuestas de los investigadores clasicos como: Olgyay, Givoni y Szokolay, pero tambien en nuevas aportaciones como las de Yeang. Sin embargo se trata de una metodologia adaptada a los requerimientos especificos de docencia e investigacion que se llevan a cabo en el Laboratorio de Diseno Bioclimatico de la Universidad Autonoma Metropolitana Unidad Azcapotzalco. Lo que aqui se presenta forma parte de un proyecto de investigacion muy amplio que pretende, desarrollar o estructurar una metodologia de diseno que incorpore las variables ambientales relacionadas con el hombre y la arquitectura: desde luego, con

  3. Second Generation Waste Package Design Study

    International Nuclear Information System (INIS)

    The following describes the objectives of Project Activity 023 ''Second Generation Waste Package Design Study'' under DOE Cooperative Agreement DE-FC28-04RW12232. The objectives of this activity are: to review the current YMP baseline environment and establish corrosion test environments representative of the range of dry to intermittently wet conditions expected in the drifts as a function of time; to demonstrate the oxidation and corrosion resistance of A588 weathering steel and reference Alloy 22 samples in the representative dry to intermittently dry conditions; and to evaluate backfill and design features to improve the thermal performance analyses of the proposed second-generation waste packages using existing models developed at the University of Nevada, Reno(UNR). The work plan for this project activity consists of three major tasks: Task 1. Definition of expected worst-case environments (humidity, liquid composition and temperature) at waste package outer surfaces as a function of time, and comparison with environments defined in the YMP baseline; Task 2. Oxidation and corrosion tests of proposed second-generation outer container material; and Task 3. Second Generation waste package thermal analyses. Full funding was not provided for this project activity

  4. Bioclimatic transport stop: Urban equipment kit; Parada bioclimatica de transporte: Kit de equipamiento urbano

    Energy Technology Data Exchange (ETDEWEB)

    Machado, Maria V; Barroso, Helen; Bonvino, Michelangelo; Puerta, Marigabriela [Instituto de Investigaciones de la Facultad de Arquitectura de la Universidad del Zulia, Maracaibo (Venezuela)

    2000-07-01

    Related to the analysis of offer of the urban public transportation, quantity and quality variables are identified, finding in the last one, the related to bus stop designing and equipping. This is, which elements a bus stop has to count with for its insertion in the urban public transportation system: information for the user, bench, trash can, et cetera: generally omitting, relevant aspects that must be considerate in its design and insertion: 1) the urban public transport, 2) the climate variables and 3) renewable energy and environmental preservation. For this presentation, thermal evaluations were made, using a thermal analysis software on prototypes of urban public transportation bus stops existent in Maracaibo (1.6 Mhab.)-Venezuela, city characterized for its high sunning, which duration approximately the same between the day period and night period: and for a marine climate of temperature (27.70 Celsius degrees) and high relative humidity (75%), low precipitation (490 mm) and predominant nor-northeast winds. The year average values of solar radiation corresponds to 5,59 kw/m{sup 2} day for the global radiation, 3.53 kw/m{sup 2} day for the direct radiation (63.1%) and 2.06% kw/m{sup 2} day for the diffuse radiation (36.9%). The maximum average value was obtained in the month of March with 6.4 kw/m{sup 2} day and the minimum on October, 4.7 kw/m{sup 2} day. In the other hand calculations about energy consumption and CO{sub 2} emissions of the conventional bus stop were made. It is proposed a bus stop design conceptualized as the bioclimatic condenser of the urban equipment. Where beside to comply its clearly determined transportation functions, it can conjunct: 1) complementary urban service activities, depending to its categorization in the urban public transportation system of Maracaibo; 2) orientation; 3) regulator of the urban microclima; and 4) area insertion of these. [Spanish] Dentro de lo que corresponde al analisis de la oferta de transporte publico

  5. Natural centre and sustainable development in Pirineos: bioclimatic building; Centro de naturaleza y desarrollo sostenible de los Pirineas: Un edificio bioclimatico

    Energy Technology Data Exchange (ETDEWEB)

    Serrosolses, J.; Vallve, X.

    2004-07-01

    This project has been promoted by the Territori i Paisatge Foundation i Caixa Catalunya. The architectonical project has been done by the architect Francesc Rius, with the collaboration of TTA in the bioclimatic design, installations and general infrastructure. This centre, placed 1.500 m. above the sea in the Lleida Pyrenees is an example of equipment intended to a training activity and rural tourism sustainable activity, and also to demonstrate the viability of using energetic sources within an efficient way. It is a building designed with bioclimatic criteria and energy saving. It is comprised by 3.000 m2 distributed in two plants. The building is semi buried, with a green roof and a north facade completely buried. The southern facade has 600 m2 glazed to gain passive solar lighting and a solar flat-plate collector integrated of 144 m2. It also has a boiler fed with biomass wastes and a photovoltaic system. (Author)

  6. The effects of post-pasture woody plant colonization on soil and aboveground litter carbon and nitrogen along a bioclimatic transect

    OpenAIRE

    La Mantia T; Gristina L; Rivaldo E; Pasta S; Novara A; Rühl J.

    2013-01-01

    We investigated the effects of woody plant colonization of abandoned pastures on soil and litter organic carbon (C) stocks and nitrogen (N) content along a bioclimatic transect in a semi-arid environment (Sicily, Italy). Soil samples were taken in three successional stages (grazed pasture, shrubland, forest) within each of three bioclimates (supramediterranean - “supra”, mesomediterranean - “meso”, thermomediterranean - “thermo”). Organic C and N in litter and soil (0-10 cm and 10-30 cm depth...

  7. Ken Yeang' s Theory of Bioclimatic Stratagem and His New Works%杨经文的生态气候感应理论及其新作

    Institute of Scientific and Technical Information of China (English)

    张镝鸣

    2000-01-01

    介绍杨经文的“生态气候感应”建筑理论的设计策略及其新作——被称为“高尔夫之伞”的马来西亚古斯利高尔夫俱乐部。%The paper introduces Ken Yeang' s bioclimatic approach in architectural design, and his lately work: the “Golf umbrella”--Guthrie Pavilion.

  8. Spatial analysis of hospital admissions for respiratory diseases during summer months in Berlin taking bioclimatic and socio-economic aspects into account

    OpenAIRE

    Scherber, Katharina; Langner, Marcel; Endlicher, Wilfried

    2014-01-01

    International environmental health studies of the past years have discussed the impacts of heat stress on human health. In particular, respiratory morbidity has shown significant heat effects in European cities. Metropolitan areas such as Berlin are characterised by an intra-urban spatial variability in socio-economic and bioclimatic conditions that is assumed to result in spatial differences in respiratory health risks. In essence, the elderly, children and people with chronic diseases suffe...

  9. Optimising for sun and light - the environmental performance of bio-climatic high-rise offices by Malaysian architect Kenneth Yeang

    Energy Technology Data Exchange (ETDEWEB)

    Ip, K.; Puteri Shireen Jahnkassim [University of Brighton (United Kingdom). School of the Environment

    2000-07-01

    Bioclimatic highrises represent an architectural response to the problem of regionalism in highrises and are based mainly on climate as a form determinant. They integrate sky courts, the use of vertical landscaping and vegetation, sun shading and use of natural ventilation in transitional areas such as the lift and ground floor lobbies. Sensitivity studies on bioclimatic highrises in tropical climate have shown that the use of daylight to save electric light and the optimum design of the building envelope can achieve significant energy savings by maintaining the balance between thermal and lighting requirements. In this study the overall envelope of two of Ken Yeang's highrise design, Menara Mesiniaga and Menara UMNO, are optimised with regards to the balance between the opposing impacts - daylight and solar gain. Apart from the external design features, the applications of photovoltaic systems to enhance the energy efficiency of these buildings are also investigated. The optimisation is carried out through the use of the FACET computer program that incorporates the use of dynamic thermal simulation program APACHE and lighting simulation RADIANCE. The paper concludes with the energy saving potential of bioclimatic design and limitations of the current study. (author)

  10. Forecasting Helicoverpa populations in Australia: A comparison of regression based models and a bioclimatic based modelling approach

    Institute of Scientific and Technical Information of China (English)

    MYRONP.ZALUCKI; MICHAELJ.FURLONG

    2005-01-01

    Long-term forecasts of pest pressure are central to the effective management of many agricultural insect pests. In the eastern cropping regions of Australia, serious infestations of Helicoverpa punctigera (Wallenglen) and H. armigera (Hübner)(Lepidoptera:Noctuidae) are experienced annually. Regression analyses of a long series of light-trap catches of adult moths were used to describe the seasonal dynamics of both species. The size of the spring generation in eastern cropping zones could be related to rainfall in putative source areas in inland Australia. Subsequent generations could be related to the abundance of various crops in agricultural areas, rainfall and the magnitude of the spring population peak. As rainfall figured prominently as a predictor variable, and can itself be predicted using the Southern Oscillation Index (SOI), trap catches were also related to this variable. The geographic distribution of each species was modelled in relation to climate and CLIMEX was used to predict temporal variation in abundance at given putative source sites in inland Australia using historical meteorological data. These predictions were then correlated with subsequent pest abundance data in a major cropping region. The regression-based and bioclimatic-based approaches to predicting pest abundance are compared and their utility in predicting and interpreting pest dynamics are discussed.

  11. Potential of bioclimatic architecture for energy saving in buildings; Potencial de la arquitectura bioclimatica para ahorro de energia en edificios

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Chavez, Jose Roberto [Universidad Autonoma Metropolitana-Azcapotzalco, Mexico, D. F. (Mexico)

    1994-12-31

    The design and construction of current buildings has been characterized, most of all, in the last 30 years, for the lack of consideration in the design process of aspects that nowadays represent a fundamental importance. These aspects are related to energy conservation and environmental protection, with man as the main center of attention for the optimum satisfaction of its physiological as well as psychological needs. In this paper are presented the causes for the lack of consideration of the mentioned aspects and guidelines to follow are set forth for their integration in the design process. Also the architecture potential with a bioclimatic approach is analyzed, for energy saving in buildings. [Espanol] El diseno y construccion de edificios contemporaneos se ha caracterizado, sobre todo en los ultimos treinta anos, por la falta de consideracion en el proceso de diseno, de aspectos que hoy en dia revisten una importancia primordial. Estos aspectos se relacionan con la preservacion de la energia y del medio ambiente, teniendo al hombre como principal centro de atencion, para la satisfaccion optima de sus necesidades, tanto fisiologicas como psicologicas. En este trabajo, se presentan las causas de la falta de consideracion de los aspectos antes citados y se plantean las pautas a seguir para su integracion en el proceso de diseno. Asi mismo, se analiza el potencial de la arquitectura con un enfoque bioclimatico, para ahorro de energia en los edificios.

  12. Clay mineralogical evidence of a bioclimatically-affected soil, Rouge River basin, South-Central Ontario, Canada

    Science.gov (United States)

    Mahaney, W. C.

    2015-01-01

    Holocene soils in drainage basins of South-Central Ontario, Canada, are generally Fluvisols (Entisols) in floodplains transitioning to Brunisols (Inceptisols), Luvisols (Alfisols) and Podzols (Spodosols) in older terraces and in the glaciated tableland. A single landslide sourced from the highest fluvial terrace in the Rouge basin, with a rubble drop of ~ 12 m emplaced a lobe-shaped mass of reworked stream gravel, glaciolacustrine sediment and till, emplaced approximately 6 m above mean water level at a height roughly equivalent to previously dated mid-Holocene terraces and soils. Clay mineralogy of the soil formed in this transported regolith produced the usual semi-detrital/pedogenic distribution of 1:1 (Si:Al = 1:1), 2:1 and 2:1:1 clay minerals as well as primary minerals consisting of plagioclase feldspar, quartz, mica and calcite. Unexpectedly, the presence of moderate amounts of Ca-smectite in the Bk and Ck horizons, relative to a clay-mineral depleted parent material (Cuk), argues for a soil hydrological change affecting the wetting depth in the deposit. The presence of the uncommon 'maidenhair fern' (Adiantum pedantum) in the mass wasted deposit, a plant capable of high evapotranspiration, is interpreted as producing a bioclimatic disruption limiting soil water penetration to near root depth (wetting depth), thus producing a clay mineral anomaly.

  13. Spatio-temporal distribution of mites (Acari: Oribtida Michael, 1883 and Reuter Gamasida) in different bioclimatic stages of northern Algeria

    International Nuclear Information System (INIS)

    The study conducted in different bioclimatic areas, has revealed that mites particularly Oribatida present a staggering distribution inspace and time in correlation with the improvement of the ecological conditions.The arid and semi-arid areas constitute a less favorable environment in contrast tothe humid and sub humid zones which are characterised by a more favorable variety of vegetation and climatic conditions. These conditions constitute a favorable environment for the development of mites especially Oribati. There are 6 species in arid zones, 11 species in semi-arid zones and 30 in wetlands and sub-humid areas. This hierarchical classification of mites stands is in good agreement with the environmental conditions which prevail in this region. However, it can be noted that the behavior of mites species manifests itself differently. Certain species show tolerance to these variations and their distribution area is important and very large. On the contrary, the majority of species whose distribution area is limited are very demanding vis-a-vis these conditions. Their presence requires some moisture in the environment and an adequate nutritional support (litter). It constitutes an important biological indicator since it helps in understanding the natural or anthropogenic changes that can alter the environment. (author)

  14. RECOGNITION OF MONTHLY HUMAN BIOCLIMATIC COMFORT WITH TOURISM CLIMATE INDEX IN RAMSAR, SOUTH-WEST OF CASPIAN SEA, IRAN

    Directory of Open Access Journals (Sweden)

    BAHMAN RAMEZANI GOURABI

    Full Text Available Weather and climate have great importance in developing of tourism industry. Most of the tourists use the climate information for travelling and choice of destination. Knowledge of climate informationand its application can assist tourism planning, tourism industries and in reducing negative effects of weather and climate on tourists and this branch of the economy. The aim of this research isrecognition of suitable months in Ramsar station on the basis of Becker method and tourism climate index (TCI, for a period of 25 years (1981-2005.The results of Becker method has shown thatRamsar station has a bioclimatic comfort in 10 months. Weather in 7 months (March, April, May, September, October, November, and December is moderate and desirable. June, July, and Augusthave a little warm and tolerate weather, but in January and February, Ramsar station has a cool weather with moderate stimulation. Evaluation of TCI index for Ramsar station has shown that May month has the best climate conditions with 80-89 range (Excellent for tourism activities. June and October months have a "very good" climate conditions. April, July, and September are included in the"good" category while August and November are included in the "acceptable" category. January, February, March, and December have the "unfavorable" conditions.

  15. Underground dwellings in the Tajuña valley, Madrid, Spain and their bioclimatic adaptation

    OpenAIRE

    Barbero Barrera, María del Mar; Gil Crespo, Ignacio Javier; Maldonado Ramos, Luis; Cárdenas y Chávarri, Javier de

    2013-01-01

    Underground dwellings are the maximum example of the vernacular architecture adaptation to the climatic conditions in areas with high annual and daily thermal fluctuations. This paper summarizes the systematic research about the energy performance of this popular architecture and their adaptation to the outdoor conditions in the case of the low area of the River Tajuña and its surroundings. Some considerations on their maintenance and renovation arise from the research.

  16. Design study of the large helical device

    International Nuclear Information System (INIS)

    The Large Helical Device (LHD) is a Heliotron/torsatron type superconducting helical fusion device, which is scheduled to be constructed by the newly established National Institute for Fusion Science as the major joint-university fusion research project. This report describes the design study of the LHD. Our goal is demonstration of high energy confinement and high β in the helical device, which is a necessary step toward a helical reactor system. (author)

  17. Spatial Assessment of the Bioclimatic and Environmental Factors Driving Mangrove Tree Species’ Distribution along the Brazilian Coastline

    Directory of Open Access Journals (Sweden)

    Arimatéa C. Ximenes

    2016-05-01

    Full Text Available Brazil has one of the largest mangrove surfaces worldwide. Due to a wide latitudinal distribution, Brazilian mangroves can be found within a large range of environmental conditions. However, little attention has been given to the description of environmental variables driving the distribution of mangrove species in Brazil. In this study, we present a novel and unprecedented description of environmental conditions for all mangroves along the Brazilian coast focusing on species limits. We apply a descriptive statistics and data-driven approach using Self-Organizing Maps and we combine data from terrestrial and marine environmental geodatabases in a Geographical Information System. We evaluate 25 environmental variables (21 bioclimatic variables, three sea surface temperature derivates, and salinity. The results reveal three groups of correlated variables: (i air temperature derivates and sea surface temperature derivates; (ii air temperature, potential evapotranspiration and precipitation derivates; and (iii precipitation derivates, aridity and salinity. Our results unveil new locations of extreme values of temperature and precipitation. We conclude that Rhizophora harrisonii and Rhizophora racemosa are more limited by precipitation and aridity and that they do not necessarily follow a latitudinal gradient. Our data also reveal that the lowest air temperatures of the coldest month are not necessarily found at the southernmost limits of mangroves in Brazil; instead they are localized at the Mesoregion of Vale do Itajaí. However, the minimum sea surface temperature drops gradually with higher latitudes in the Brazilian southern hemisphere and is probably a better indicator for the decrease of species at the latitudinal limits of mangroves than the air temperature and precipitation.

  18. Trends and Bioclimatic Assessment of Extreme Indices: Emerging Insights for Rainfall Derivative Crop Microinsurance in Central-West Nigeria

    Science.gov (United States)

    Awolala, D. O.

    2015-12-01

    Scientific predictions have forecasted increasing economic losses by which farming households will be forced to consider new adaptation pathways to close the food gap and be income secure. Pro-poor adaptation planning decisions therefore must rely on location-specific details from systematic assessment of extreme climate indices to provide template for most suitable financial adaptation instruments. This paper examined critical loss point to water stress in maize production and risk-averse behaviour to extreme local climate in Central West Nigeria. Trends of extreme indices and bio-climatic assessment based on RClimDex for numerical weather predictions were carried out using a 3-decade time series daily observational climate data of the sub-humid region. The study reveals that the flowering and seed formation stage was identified as the most critical loss point when seed formation is a function of per unit soil water available for uptake. The sub-humid has a bi-modal rainfall pattern but faces longer dry spell with a fast disappearing mild climate measured by budyko evaporation of 80.1%. Radiation index of dryness of 1.394 confirms the region is rapidly becoming drier at an evaporation rate of 949 mm/year and rainfall deficit of 366 mm/year. Net primary production from rainfall is fast declining by 1634 g(DM)/m2/year. These conditions influenced by monthly rainfall uncertainties are associated with losses of standing crops because farmers are uncertain of rainfall probability distribution especially during most important vegetative stage. In a simulated warmer climate, an absolute dryness of months was observed compared with 4 dry months in a normal climate which explains triggers of food deficits and income losses. Positive coefficients of tropical nights (TR20), warm nights (TN90P) and warm days (TX90P), and the negative coefficient of cold days (TX10P) with time are significant at Prisk sharing framework.

  19. Bioclimatic predictions of habitat suitability for the biofuel switchgrass in North America under current and future climate scenarios

    International Nuclear Information System (INIS)

    Dedicated biofuel crops, while providing economic and other benefits, may adversely impact biodiversity directly via land use conversion, or indirectly via creation of novel invasive species. To mitigate negative impacts bioclimatic envelope models (BEM) can be used to estimate the potential distribution and suitable habitat based on the climate and distribution in the native range. We used CLIMEX to evaluate the regions of North America suitable for agronomic production, as well as regions potentially susceptible to an invasion of switchgrass (Panicum virgatum) under both current and future climate scenarios. Model results show that >8.7 million km2 of North America has suitable to very favorable habitat, most of which occurs east of the Rocky Mountains. The non-native range of western North America is largely unsuitable to switchgrass as a crop or potential weed unless irrigation or permanent water is available. Under both the CGCM2 and HadCM3 climate models and A2 and B2 emissions scenarios, an overall increase in suitable habitat is predicted over the coming century, although the western US remains unsuitable. Our results suggest that much of North America is suitable for switchgrass cultivation, although this is likely to shift north in the coming century. Our results also agree with field collections of switchgrass outside its native range, which indicate that switchgrass is unlikely to establish unless it has access to water throughout the year (e.g., along a stream). Thus, it is the potential invasion of switchgrass into riparian habitats in the West that requires further investigation. (author)

  20. Controlled air incinerator conceptual design study

    International Nuclear Information System (INIS)

    This report presents a conceptual design study for a controlled air incinerator facility for incineration of low level combustible waste at Three Mile Island Unit 2 (TMI-2). The facility design is based on the use of a Helix Process Systems controlled air incinerator. Cost estimates and associated engineering, procurement, and construction schedules are also provided. The cost estimates and schedules are presented for two incinerator facility designs, one with provisions for waste ash solidification, the other with provisions for packaging the waste ash for transport to an undefined location

  1. Preliminary Systems Design Study assessment report

    International Nuclear Information System (INIS)

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept

  2. Preliminary systems design study assessment report

    International Nuclear Information System (INIS)

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept

  3. Sound in new media and design studies

    OpenAIRE

    Özcan, Oğuzhan; Tahiroğlu, Koray; Ikonen, Antti

    2014-01-01

    56 DesignIssues: Volume 30, Number 2 Spring 2014 © 2014 Massachusetts Institute of Technology Sound in New Media and Design Studies Koray Tahiro˘glu, O˘guzhan Özcan, Antti Ikonen Introduction The effect of new media on the computerization of cultural prac-tices has moved to a new level and has become more open, com-mon, and prevailing as we deal with new forms of artistic creation and design processes in supporting higher education. Massive changes have occurr...

  4. Preliminary Systems Design Study assessment report

    International Nuclear Information System (INIS)

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. This volume of the Systems Design Study contain four Appendixes that were part of the study. Appendix A is an EG ampersand G Idaho, Inc., report that represents a review and compilation of previous reports describing the wastes and quantities disposed in the Subsurface Disposal Area of the Idaho National Engineering Laboratory. Appendix B contains the process flowsheets considered in this study, but not selected for detailed analysis. Appendix C is a historical tabulation of radioactive waste incinerators. Appendix D lists Department of Energy facilities where cementation stabilization systems have been used

  5. Energy saving in office buildings through cheap bioclimatic design measures; Ahorro de energia en edificios de oficinas a partir de medidas de diseno bioclimatico de bajo costo

    Energy Technology Data Exchange (ETDEWEB)

    Garcia Chavez, Jose Roberto [Universidad Autonoma Metropolitana, Unidad Azcapotzalco (Mexico)

    2007-01-15

    This article shows the study performed in a building of Campus Uni dad Azcapotzalco in order to evaluate some bioclimatic design strategies. And to reach the higrothermic comfort and the appropriate lighting to favor employees to increase their performance in work activities. There are some strategies in order to solve this problem: the skylight area reduction, existing lights change, ventilation increase, fixed partition door implementation, etc. The obtained outcomes make possible the beginning of bioclimatic design use to save energy in other buildings, because sometimes edifications possess a design that cause the energy waste. [Spanish] En este articulo se muestra el estudio que se hizo en un edificio en el Campus Unidad Azcapotzalco, el fin de esta labor es evaluar ciertas estrategias de diseno bioclimatico para que las personas que operan en este edificio puedan tener confort higrotermico y una iluminacion pertinente, que den como resultado un mejor desempeno en las tareas que realizan. Algunas de las estrategias para darle solucion a esta problematica son: disminuir del area de lucernarios, cambiar las luminarias existentes, aumentar la ventilacion, implementar canceleria, etc. Con los resultados obtenidos nace la esperanza de que se utilicen estrategias de diseno bioclimatico para ahorrar energia en otros edificios, ya que muchas veces las edificaciones poseen un diseno que unicamente provoca el uso imprudente de la energia.

  6. Design study of the compact ERL

    International Nuclear Information System (INIS)

    Energy-recovery linac (ERL) is a promising device for future X-ray light sources, which can produce coherent X-rays and femto-second X-ray pulses. In Japan, we have organized a collaboration team, consisting of the members of KEK, JAEA, ISSP and other laboratories, toward realization of future ERL light sources, and started R and D efforts to establish accelerator technologies relevant to the ERL light source. In order to demonstrate all the accelerator technologies working together, we have decided to build a small facility, the Compact ERL. This report presents a design study of the Compact ERL, which includes R and D issues for each accelerator component, studies on the beam dynamics, performance of the Compact ERL as a light source of THz and X-ray. (author)

  7. DU-AGG pilot plant design study

    International Nuclear Information System (INIS)

    The Idaho National Engineering Laboratory (INEL) is developing new methods to produce high-density aggregate (artificial rock) primarily consisting of depleted uranium oxide. The objective is to develop a low-cost method whereby uranium oxide powder (UO[sub 2], U[sub 3]O[sub ]8, or UO[sub 3]) can be processed to produce high-density aggregate pieces (DU-AGG) having physical properties suitable for disposal in low-level radioactive disposal facilities or for use as a component of high-density concrete used as shielding for radioactive materials. A commercial company, G-M Systems, conducted a design study for a manufacturing pilot plant to process DU-AGG. The results of that study are included and summarized in this report. Also explained are design considerations, equipment capacities, the equipment list, system operation, layout of equipment in the plant, cost estimates, and the proposed plan and schedule

  8. Preliminary systems design study assessment report

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1991-10-01

    The System Design Study (SDS), part of the Waste Technology Development Department of the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. The SDS results are published in eight volumes. Volume I contains an executive summary. The SDS summary and analysis of results are presented in Volume II. Volumes III through VII contain descriptions of twelve system and four subsystem concepts. Volume VIII contains the appendixes.

  9. Preliminary systems design study assessment report

    International Nuclear Information System (INIS)

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each. This volume contains the descriptions and other relevant information of the four subsystems required for most of the ex situ processing systems. This volume covers the metal decontamination and sizing subsystem, soils processing subsystem, low-level waste subsystem, and retrieval subsystem

  10. Preliminary Systems Design Study assessment report

    International Nuclear Information System (INIS)

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. The SDS results are published in eight volumes. Volume 1 contains an executive summary. The SDS summary and analysis of results are presented in Volume 2. Volumes 3 through 7 contain detailed descriptions of twelve system and four subsystem concepts. Volume 8 contains the appendixes. 23 refs., 23 figs., 16 tabs

  11. Preliminary Systems Design Study assessment report

    International Nuclear Information System (INIS)

    The System Design Study (SDS), part of the Waste Technology Development Department at Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic (TRU) waste stored at the Radioactive Waste Management Complex's (RWMC's) Subsurface Disposal Area (SDA) at INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. SDS resulted in the development of technology requirements including demonstration, testing and evaluation activities needed for implementing each concept. The SDS results are published in eight volumes. Volume 1 contains an executive summary. The SDS summary and analysis of results are presented in volume 2. Volumes 3 through 7 contain detailed descriptions of twelve system and four subsystem concepts. Volume 8 contains the appendices. 3 figs., 3 tabs

  12. Preliminary Systems Design Study assessment report

    International Nuclear Information System (INIS)

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques for the remediation of hazardous and transuranic waste stored at Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. This volume contains introduction section containing a brief SDS background and lists the general assumptions and considerations used during the development of the system concepts. The introduction section is followed by sections describing two system concepts that produce a waste form in compliance with the Waste Isolation Pilot Plant (WIPP) Waste Acceptance Criteria (WAC) and transportation package (TRAMPAC) requirements. This system concept category is referred to as Waste Form 4, ''WIPP and TRAMPAC Acceptable.'' The following two system concepts are under this category: Sort, Treat, and Repackage System (4-BE-2); Volume Reduction and Packaging System (4-BE-4)

  13. Large Coil Program magnetic system design study

    International Nuclear Information System (INIS)

    The primary objective of the Large Coil Program (LCP) is to demonstrate the reliable operation of large superconducting coils to provide a basis for the design principles, materials, and fabrication techniques proposed for the toroidal magnets for the THE NEXT STEP (TNS) and other future tokamak devices. This paper documents a design study of the Large Coil Test Facility (LCTF) in which the structural response of the Toroidal Field (TF) Coils and the supporting structure was evaluated under simulated reactor conditions. The LCP test facility structural system consists of six TF Coils, twelve coil-to-coil torsional restraining beams (torque rings), a central bucking post with base, and a Pulse Coil system. The NASTRAN Finite Element Structural Analysis computer Code was utilized to determine the distribution of deflections, forces, and stresses for each of the TF Coils, torque rings, and the central bucking post. Eleven load conditions were selected to represent probable test operations. Pulse Coils suspended in the bore of the test coil were energized to simulate the pulsed field environment characteristic of the TNS reactor system. The TORMAC Computer Code was utilized to develop the magnetic forces in the TF Coils for each of the eleven loading conditions examined, with or without the Pulse Coils energized. The TORMAC computer program output forces were used directly as input load conditions for the NASTRAN analyses. Results are presented which demonstrate the reliability of the LCTF under simulated reactor operating conditions

  14. Design study of marine reactor core

    International Nuclear Information System (INIS)

    JAERI have carried out four core designs for three different type Reactor of Trial design in FY 1983 ∼ 1986 and one core (the optimum core) and three survey cores for conceptual design Reactor in 1987. Based on these cores study results, we are now studying to design MRX CORE. On the other side, we started design study of super-miniaturized 2 MWt core concept for deep-sea submersible. This report describes the results of comparison and studies of the core specification, specific characteristics etc of these cores, and we study that more thick fuel outer diameter (9.5 mm) core was possible or not as for the MRX CORE that has now thin fuel outer diameter (7.0 mm) in consideration of rapid power change etc especially with marine reactor. As the results, it was found that 9.5 mm diameter fuel core was possible and some methods were found, therefore it will be necessary to study the 9.5 mm diameter fuel core in detail continuously. (author)

  15. Design study of a superconducting SOR facility

    International Nuclear Information System (INIS)

    This paper describes the design study on a synchrotron orbital radiation (SOR) facility composed of a superconducting linac and storage rings. The rings using superconducting magnets and a superconducting cavity can store electron beams of 1 GeV with beam current of 200 mA. Design features are as follows: (1) Superconducting magnets and a superconducting cavity are employed to save both operating power and space. (2) High vacuum in the beam chamber is expected shortly after the start of initial operation, because electrons are accelerated by the superconducting linac and injected at full energy of 1 GeV. (3) Each storage ring has three super periods in the lattice, and three long drift spaces for electron beam injection, cavity installation and optional insertion devices, respectively. (4) A superconducting TW linac as the injector can save electric power and increase electric field gradient. (5) The accelerating guides of the superconducting traveling wave linac are indirectly cooled with LHe flows in order to make maintenance and cryostat construction easier. (6) An optional acceleration and storage system of positrons can be installed

  16. Radiofrequency heating design study for TNS

    Energy Technology Data Exchange (ETDEWEB)

    Pridgeon, T.H.

    1978-03-01

    This report is divided into two sections, corresponding to two different phases of a research and design study. In the first section, a brief comparison study is presented of the various RF heating methods under consideration for tokamak application. These methods include: electron cyclotron resonance heating (ECRH), lower hybrid heating, ion cyclotron range of frequencies heating (ICRF), ion cyclotron resonance heating (ICRH), magnetoacoustic wave heating, and shear Alfven wave heating. Each method is examined according to the type(s) of plasma waves involved, wave propagation and accessibility, dominant absorption processes, possible coupling structures, expected efficiencies, and expected engineering difficulties. A specific tokamak application was chosen to provide self-consistent boundary conditions for the study. The second part of this report deals with the application of ICRF to TNS. Although coupling theory for ICRF is very uncertain at this time for devices as large as TNS, waveguides operating at a frequency equal to twice the deuteron cyclotron frequency are considered as possible coupling structures. A possible design is presented that has been arrived at through consideration of several factors.

  17. Radiofrequency heating design study for TNS

    International Nuclear Information System (INIS)

    This report is divided into two sections, corresponding to two different phases of a research and design study. In the first section, a brief comparison study is presented of the various RF heating methods under consideration for tokamak application. These methods include: electron cyclotron resonance heating (ECRH), lower hybrid heating, ion cyclotron range of frequencies heating (ICRF), ion cyclotron resonance heating (ICRH), magnetoacoustic wave heating, and shear Alfven wave heating. Each method is examined according to the type(s) of plasma waves involved, wave propagation and accessibility, dominant absorption processes, possible coupling structures, expected efficiencies, and expected engineering difficulties. A specific tokamak application was chosen to provide self-consistent boundary conditions for the study. The second part of this report deals with the application of ICRF to TNS. Although coupling theory for ICRF is very uncertain at this time for devices as large as TNS, waveguides operating at a frequency equal to twice the deuteron cyclotron frequency are considered as possible coupling structures. A possible design is presented that has been arrived at through consideration of several factors

  18. Design Study on the Advanced Recycling Reactor

    International Nuclear Information System (INIS)

    The design study on the Advanced Recycling Reactor (ARR) has been conducted. This paper presents the pre-conceptual design of the ARR that is a loop-typed sodium cooled reactor with MOX fuel. International Nuclear Recycling Alliance (INRA) takes advantage of international experience and uses the design based on Japan Sodium-cooled Fast Reactor (JSFR) as reference for FOA studies of DOE in the U.S., because Japan has conducted R and Ds for the JSFR incorporating thirteen technology enhancements expected to improve safety, enhance economics, and increase reactor reliability. ARR's goal is to generate electricity while consuming fuel containing transuranics and to be cost-competitive with LWRs of similar size. INRA proposes 3 evolutions of the ARR; ARR1, a 500 MWe demonstration plant, online in 2025; ARR2, a 1,000 MWe commercial plant, online in 2035; ARR3, a 1,500 MWe full-scale commercial plant, online in 2050. INRA believes the scale-up factor of two is acceptable increase from manufacturing and licensing points of view. Major features of the ARR1 are the following: The reactor core of 70 cm high is working for a burner of TRU. The conversion ratio of fissile is set up less than 0.6 and the amount of burned TRU is 45-51 kg/TWeh. Decay heat can be removed by natural circulation to improve safety. The primary cooling system consists of two-loop arrangement and the integrated IHX/Pump to improve economics. The steam generator with the straight doublewalled tube is used to improve reliability. The capital cost, the construction schedule and regulatory and licensing schedule are estimated. Furthermore, the technology readiness level and the technology development roadmap are studied and identified to be ready for commercial deployment. (author)

  19. Design Study: Rocket Based MHD Generator

    Science.gov (United States)

    1997-01-01

    This report addresses the technical feasibility and design of a rocket based MHD generator using a sub-scale LOx/RP rocket motor. The design study was constrained by assuming the generator must function within the performance and structural limits of an existing magnet and by assuming realistic limits on (1) the axial electric field, (2) the Hall parameter, (3) current density, and (4) heat flux (given the criteria of heat sink operation). The major results of the work are summarized as follows: (1) A Faraday type of generator with rectangular cross section is designed to operate with a combustor pressure of 300 psi. Based on a magnetic field strength of 1.5 Tesla, the electrical power output from this generator is estimated to be 54.2 KW with potassium seed (weight fraction 3.74%) and 92 KW with cesium seed (weight fraction 9.66%). The former corresponds to a enthalpy extraction ratio of 2.36% while that for the latter is 4.16%; (2) A conceptual design of the Faraday MHD channel is proposed, based on a maximum operating time of 10 to 15 seconds. This concept utilizes a phenolic back wall for inserting the electrodes and inter-electrode insulators. Copper electrode and aluminum oxide insulator are suggested for this channel; and (3) A testing configuration for the sub-scale rocket based MHD system is proposed. An estimate of performance of an ideal rocket based MHD accelerator is performed. With a current density constraint of 5 Amps/cm(exp 2) and a conductivity of 30 Siemens/m, the push power density can be 250, 431, and 750 MW/m(sup 3) when the induced voltage uB have values of 5, 10, and 15 KV/m, respectively.

  20. Design study of HOM absorbers for SuperKEKB

    International Nuclear Information System (INIS)

    The intense higher order modes (HOM) are likely to be excited at various vacuum components owing to the short bunches and the high bunch currents as in the case of SuperKEKB. Since the intense HOM leads to the extra heating of vacuum components and might make the circulating beams unstable, the HOM absorbers are indispensable. We have just started the design study on a HOM absorber which is applicable to the antechamber-type beam pipes used in the SuperKEKB keeping the beam collimators in mind. The promising materials of HOM absorber are ferrite or SiC. The structure is optimized through the simulations about the beam impedance and the HOM absorbing properties. The secure joint of the absorber material to the base metal (copper) is found to be a key issue, especially for ferrite, and the joint tests using brazing, HIP and SPS methods are tried. (author)

  1. Design study on the Advanced Recycling Reactor

    International Nuclear Information System (INIS)

    Full text: The design study on the Advanced Recycling Reactor (ARR) has been conducted. This paper presents the pre-conceptual design of the ARR that is a loop-typed sodium cooled reactor with MOX fuel. International Nuclear Recycling Alliance (INRA) takes advantage of international experience and uses the design based on Japan Sodium-cooled Fast Reactor (JSFR) as reference for FOA studies of US DOE, because Japan has conducted R and Ds for the JSFR incorporating thirteen technology enhancements expected to improve safety, enhance economics, and increase reactor reliability. The targets of the ARR are to generate electricity while consuming fuel containing transuranics and to attain cost competitiveness with the similar sized LWRs. INRA proposes 3 evolutions of the ARR; ARR1, a 500 MWe demonstration plant, online in 2025; ARR2, a 1,000 MWe commercial plant, online in 2035; ARR3, a 1,500 MWe full-scale commercial plant, online in 2050. INRA believes the scale-up factor of two is acceptable increase from manufacturing and licensing points of view. Major features of the ARR1 are the following: The reactor core is 70cm high and the volume fraction of fuel is approximately 32%. The conversion ratio of fissile is set up less than 0.6 and the amount of burned TRU is 45-51 kg/TWeh.Decay heat can be removed by natural circulation to improve safety. The primary cooling system consists of two-loop arrangement and the integrated IHX/Pump to improve economics. The steam generator with the straight double-walled tube is used to improve reliability. The ARR1 is co-located with a recycling facility. The overall plant facility arrangement is planned assuming to be constructed and installed in an inland area. The plant consists of a reactor building (including reactor auxiliary facilities and electrical/control systems), a turbine building, and a recycling building. The volume of the reactor building will be approximately 180,000 m3. The capital cost for the ARR1 and the ARR2 are

  2. Design study on small CANDLE reactor

    International Nuclear Information System (INIS)

    A new reactor burnup strategy CANDLE was proposed, where shapes of neutron flux, nuclide densities and power density distributions remain constant but move to an axial direction. Here important points are that the solid fuel is fixed at each position and that any movable burnup reactivity control mechanisms such as control rods are not required. This burnup strategy can derive many merits. The change of excess reactivity along burnup is theoretically zero, and shim rods will not be required for this reactor. The reactor becomes free from accidents induced by unexpected control rods withdrawal. The core characteristics, such as power feedback coefficients and power peaking factor, are not changed along burnup. Therefore, the operation of the reactor becomes much easier than the conventional reactors especially for high burnup reactors. The transportation and storage of replacing fuels become easy and safe, since they are free from criticality accidents. In our previous works it is appeared that application of this burnup strategy to neutron rich fast reactors makes excellent performances. Only natural or depleted uranium is required for the replacing fuels. The average burnup of the spent fuel is about 40% that is equivalent to 40% utilization of the natural uranium without the reprocessing and enrichment. This reactor can be realized for large reactor, since the neutron leakage becomes small and its neutron economy becomes improved. In the present paper we try to design small CANDLE reactor whose performance is similar to the large reactor by increasing its fuel volume ration of the core, since its performance is strongly required for local area usage. Small long life reactor is required for some local areas. Such a characteristic that only natural uranium is required after second core is also strong merit for this case. The core with 1.0 m radius, 2.0 m length can realize CANDLE burn-up with nitride (enriched N-15) natural uranium as fresh fuel. Lead-Bismuth is

  3. Spatial analysis of hospital admissions for respiratory diseases during summer months in Berlin taking bioclimatic and socio-economic aspects into account

    Directory of Open Access Journals (Sweden)

    Scherber, Katharina

    2014-04-01

    Full Text Available International environmental health studies of the past years have discussed the impacts of heat stress on human health. In particular, respiratory morbidity has shown significant heat effects in European cities. Metropolitan areas such as Berlin are characterised by an intra-urban spatial variability in socio-economic and bioclimatic conditions that is assumed to result in spatial differences in respiratory health risks. In essence, the elderly, children and people with chronic diseases suffer most from heat stress. A spatial epidemiological approach was chosen to map elevated risks for hospital admissions among > 64-year-olds with respiratory diseases (RD during the summer months (June–September from 2000 to 2009 and to link respiratory health risks to bioclimatic and socio-economic conditions in Berlin. The study aims to detect significant clusters with elevated relative risks for hospital admissions among > 64-year-olds with RD in due consideration of socio-economic conditions as a covariate for health outcomes. The findings from the purely spatial analysis show significant intra-urban disparities in the relative risks for hospital admissions among > 64-year-olds with RD. The highest relative risks within significant clusters were basically detected in the north-western and south-eastern city centre based on the study period 2000–2009 and also during the hot months of July and August in 2003 and 2006. The correlation analysis depicted significantly positive relationships between relative risks for hospital admissions among > 64-year-olds with RD and population density, socio-economic conditions and the annual mean number of days with heat loads on the basis of the period 1971–2000 and the average of the periods 1971–2000 and 2021–2050 at the zip code level in Berlin. To specifically implement health care intervention and prevention strategies into urban planning and to apply a directed practice of telemedicine for patients with

  4. 300 GeV Up-dated design study

    CERN Multimedia

    1967-01-01

    The 'Report on the Design Study of a 300 GeV Proton Synchrotron' (document CERN/ 563) was issued in November 1964. An Addendum (document CERN/702) to this Design Study was issued on 30 May as one of the up-to-date set of documents and relevant costs presented to the June Council Meeting.

  5. Assessing Residential Landscape Performance:Visual and Bioclimatic Analyses through In-Situ Data%住宅景观绩效评价:基于现场数据的视觉与生物气候学分析

    Institute of Scientific and Technical Information of China (English)

    杨波; 帕梅拉•布莱克默[美国; 克里斯•宾德[美国; 刘京一(译); 周珏琳(译); 吴丹子(校)

    2015-01-01

    2011至2012年间,美国风景园林基金会(Landscape Architecture Foundation,简称LAF)的景观绩效系列(Landscape Performance Series)发表了70余个案例研究。住宅景观的项目虽然在专业实践中相当常见,但LAF的文集中却没有涉及。为了填补这一空缺,文章介绍了位于美国科罗拉多州皮特金县(Pitkin County)的3个住宅景观的评估。文章重点关注了其中2个不同项目基于一手现场数据的视觉和生物气候学分析,突出了景观设计实现社会效益的可能性。视觉分析表明,景观设计可以为将近98%的不佳视线提供缓冲。而生物气候学分析表明,归为人体舒适区的户外空间与居民自我感知的区域相一致。除了证实景观设计的有效性,本研究还能为衡量社会层面的景观绩效提供有效的方法,从而有助于改善未来的住宅景观设计。%More than seventy case studies were generated in the Landscape Architecture Foundation (LAF)’s Landscape Performance Series during 2011 and 2012. Residential landscape projects, though common in professional practice, were missing in LAF’s portfolio. To fil this gap, this paper introduces the assessment of three residential projects in Pitkin County, Colorado, USA. The paper particularly focuses on the visual and bioclimatic analyses of two different projects, based on first-hand, in-situ data, and highlights the feasibility of achieving social benefits through landscape design. The visual analysis shows that landscape design can buffer almost 98% of unwanted views, and the bioclimatic analysis indicates that the outdoor spaces that fal into the human comfort zone are in accord with residents’ self-reported behavior mapping. In addition to confirming efficacious designs, this study can help improve future residential design by offering accessible methods for measuring social aspects of landscape performance.

  6. Heavy ion booster cyclotron design studies at Berkeley

    International Nuclear Information System (INIS)

    Design studies on four booster cyclotrons for heavy ions are described. Comparisons are made of normal vs. superconducting main coils and of K = 400 and 800 sizes. Performance and cost estimates are given. (U.S.)

  7. The effects of post-pasture woody plant colonization on soil and aboveground litter carbon and nitrogen along a bioclimatic transect

    Directory of Open Access Journals (Sweden)

    La Mantia T

    2013-06-01

    Full Text Available We investigated the effects of woody plant colonization of abandoned pastures on soil and litter organic carbon (C stocks and nitrogen (N content along a bioclimatic transect in a semi-arid environment (Sicily, Italy. Soil samples were taken in three successional stages (grazed pasture, shrubland, forest within each of three bioclimates (supramediterranean - “supra”, mesomediterranean - “meso”, thermomediterranean - “thermo”. Organic C and N in litter and soil (0-10 cm and 10-30 cm depth were determined, as well as soil bulk density. Especially at 0-10 cm depth, changes in C and N contents along successional stages differed among bioclimates. Soil organic carbon (SOC stock decreased from pasture to shrubland and increased from shrubland to forest in “supra”, increased from pasture to shrubland and then remained stable in “thermo”, and was stable in “meso”. Soil C/N ratio decreased with succession in “supra”, showed no significant trend in “meso”, and increased with succession in “thermo”. Litter C stock increased with succession in “meso”, increased from pasture to shrubland and decreased from shrubland to forest in “thermo”, and increased from pasture to shrubland and then remained stable in “supra”. Litter C/N ratio increased in “thermo” and “supra” from pasture to shrubland and from shrubland to forest, but did not change significantly with succession in “meso”. The different trends in SOC among bioclimates may be caused by changes in the importance of litter input, litter decay rate and mineralization. Successional changes in “meso” and “supra” appeared to be most affected by litter quality, while those in “thermo” appeared to be strongly influenced by limited litter decay due to low soil moisture and high temperature.

  8. Solar geometry tool applied to systems and bio-climatic architecture; Herramienta de geometria solar aplicada a sistemas y arquitectura bio-climatica

    Energy Technology Data Exchange (ETDEWEB)

    Urbano, Antonio; Matsumoto, Yasuhiro; Aguilar, Jaime; Asomoza Rene [CIMVESTAV-IPN, Mexico, D.F (Mexico)

    2000-07-01

    The present article shows the annual solar path, by means of graphic Cartesian, as well as the use of these, taken as base the astronomical, geographical antecedents and of the place. These graphs indicate the hours of sun along the day, month and year for the latitude of 19 Celsius degrees north, as well as the values of radiation solar schedule for the most important declines happened annually (equinoxes, solstices and the intermediate months). These graphs facilitate the user's good location to evaluate inherent obstacles of the environment and to determine in the place, the shades on the solar equipment or immovable (mountains, tree, buildings, windows, terraces, domes, et cetera), the hours of sun or the radiation for the wanted bio-climatic calculation. The present work is a tool of place engineering for the architects, designers, manufactures, planners, installers, energy auditors among other that require the use of the solar energy for anyone of its multiple applications. [Spanish] El presente articulo, muestra las trayectorias solares anules, mediante graficas cartesianas, asi como la utilizacion de estas, tomando como base los antecedentes astronomicos, geograficos y del lugar. Estas graficas indican las horas del sol a lo largo del dia, mes y ano para la latitud de 19 grados Celsius norte, asi como los valores de radiacion solar horaria para las declinaciones mas importantes ocurridas anualmente (equinoccios, solsticios y los meses intermedios). Estas graficas facilitan la ubicacion optima del usuario para evaluar obstaculos inherentes del entorno y determinar en el sitio, las sombras sobre los equipos solares o inmuebles (montanas, arboles, edificios, ventanas, terrazas, domos, etc.), las horas de sol o bien la radiacion para el calculo bio-climatico deseado. El presente trabajo es una herramienta de Ingenieria de sitio para los Arquitectos, Disenadores, Constructores, Proyectistas, Instaladores, Auditores Energeticos entre otros, que requieran el

  9. Conceptual Design Study of JSFR (1) - Overview and Core Concept -

    International Nuclear Information System (INIS)

    The design study on the Japan Sodium-cooled Fast Reactor (JSFR) has been conducted. JSFR at the commercialized stage should have excellent prospects in operation and maintenance as well as the economy. The plant concept of JSFR aims at reducing the amount of commodity use while maintaining a large electrical output with innovative technologies. The conceptual core design study on JSFR has been performed from view points of safety, economics, resource utilization, environmental burden reduction, and nuclear proliferation resistance. This paper describes the conceptual design of the JSFR. (author)

  10. Aircraft energy efficiency laminar flow control wing design study

    Science.gov (United States)

    Bonner, T. F., Jr.; Pride, J. D., Jr.; Fernald, W. W.

    1977-01-01

    An engineering design study was performed in which laminar flow control (LFC) was integrated into the wing of a commercial passenger transport aircraft. A baseline aircraft configuration was selected and the wing geometry was defined. The LFC system, with suction slots, ducting, and suction pumps was integrated with the wing structure. The use of standard aluminum technology and advanced superplastic formed diffusion bonded titanium technology was evaluated. The results of the design study show that the LFC system can be integrated with the wing structure to provide a structurally and aerodynamically efficient wing for a commercial transport aircraft.

  11. Blade System Design Study. Part II, final project report (GEC).

    Energy Technology Data Exchange (ETDEWEB)

    Griffin, Dayton A. (DNV Global Energy Concepts Inc., Seattle, WA)

    2009-05-01

    As part of the U.S. Department of Energy's Low Wind Speed Turbine program, Global Energy Concepts LLC (GEC)1 has studied alternative composite materials for wind turbine blades in the multi-megawatt size range. This work in one of the Blade System Design Studies (BSDS) funded through Sandia National Laboratories. The BSDS program was conducted in two phases. In the Part I BSDS, GEC assessed candidate innovations in composite materials, manufacturing processes, and structural configurations. GEC also made recommendations for testing composite coupons, details, assemblies, and blade substructures to be carried out in the Part II study (BSDS-II). The BSDS-II contract period began in May 2003, and testing was initiated in June 2004. The current report summarizes the results from the BSDS-II test program. Composite materials evaluated include carbon fiber in both pre-impregnated and vacuum-assisted resin transfer molding (VARTM) forms. Initial thin-coupon static testing included a wide range of parameters, including variation in manufacturer, fiber tow size, fabric architecture, and resin type. A smaller set of these materials and process types was also evaluated in thin-coupon fatigue testing, and in ply-drop and ply-transition panels. The majority of materials used epoxy resin, with vinyl ester (VE) resin also used for selected cases. Late in the project, testing of unidirectional fiberglass was added to provide an updated baseline against which to evaluate the carbon material performance. Numerous unidirectional carbon fabrics were considered for evaluation with VARTM infusion. All but one fabric style considered suffered either from poor infusibility or waviness of fibers combined with poor compaction. The exception was a triaxial carbon-fiberglass fabric produced by SAERTEX. This fabric became the primary choice for infused articles throughout the test program. The generally positive results obtained in this program for the SAERTEX material have led to its

  12. Interim report on the tandem mirror hybrid design study

    International Nuclear Information System (INIS)

    The initial phase of a 2-year design study of a tandem mirror fusion reactor is presented. The following chapters are included: (1) mechanical design of the plant; (2) plasma physics; (3) blanket design; (4) magnet design; (5) injector design; (6) direct convertor design; (7) balance of plant design; (8) fission burner reactor; (9) environment and safety; and (10) economic analysis

  13. Interim report on the tandem mirror hybrid design study

    Energy Technology Data Exchange (ETDEWEB)

    Moir, R.W. (ed.)

    1979-08-01

    The initial phase of a 2-year design study of a tandem mirror fusion reactor is presented. The following chapters are included: (1) mechanical design of the plant; (2) plasma physics; (3) blanket design; (4) magnet design; (5) injector design; (6) direct convertor design; (7) balance of plant design; (8) fission burner reactor; (9) environment and safety; and (10) economic analysis. (MOW)

  14. A Stellar Reference Unit Design Study for SIRTF

    DEFF Research Database (Denmark)

    Jørgensen, John Leif; Liebe, Carl Christian

    1996-01-01

    A design study for a stellar reference unit, or star tracker, for SIRTF was conducted in FY96 in conjunction with the Tracking Sensors Group of the Avionic Equipment Section of JPL. The resulting design was derived from the Oersted, autonomous, Advanced Stellar Compass, star tracker. The projected...... star tracker integration with the cryogenic telescope structure....

  15. Pre-industrial-potential and Last Glacial Maximum global vegetation simulated with a coupled climate-biosphere model: diagnosis of bioclimatic relationships

    Science.gov (United States)

    Crucifix, Michel; Betts, Richard A.; Hewitt, Christopher D.

    2005-03-01

    The global climate-vegetation model HadSM3_TRIFFID has been used to estimate the equilibrium states of climate and vegetation with pre-industrial and last glacial boundary conditions. The present study focuses on the evaluation of the terrestrial biosphere component (TRIFFID) and its response to changes in climate and CO 2 concentration. We also show how, by means of a diagnosis of the distribution of plant functional types according to climate parameters (soil temperature, winter temperature, growing-degree days, precipitation), it is possible to get better insights into the strengths and weaknesses of the biosphere model by reference to field knowledge of ecosystems. The model exhibits profound changes between the vegetation distribution at the Last Glacial Maximum and today that are generally consistent with palaeoclimate data, such as the disappearance of the Siberian boreal forest (taiga), an increase in shrub cover in Europe and an increase of the subtropical desert area. The effective equatorial and sub-tropical tree area is reduced by 18%. There is also an increase in cover of wooded species in North-Western Africa and in Mexico. The analysis of bioclimatic relationships turns out to be an efficient method to infer the contributions of different climatic factors to vegetation changes, both at high latitudes, where the position of the boreal treeline appears in this model to be more directly constrained by the water stress than by summer temperature, and in semi-humid areas where the contributions of temperature and precipitation changes may partly compensate each other. Our study also confirms the major contribution of the decrease in CO 2 to environmental changes and carbon storage through its selective impact on gross primary productivity of C3 and C4 plants and a reduction by 25% of water-use efficiency. Specifically, the reduction in CO 2 concentration increases the amount of precipitation necessary to sustain at least 20% of grass fraction by 50 mm

  16. Conceptual design study of fusion experimental reactor (FY86 FER)

    International Nuclear Information System (INIS)

    This report describes the results of conceptual design study on plant systems for the Fusion Experimental Reactor (FY86 FER). Design studies for FER plant systems have been continued from FY85, especially for design modifications made in accordance with revisions of plasma scaling parameters and system improvements. This report describes 1) system construction, 2) site and reactor building plan, 3) repaire and maintenance system, 4) tritium circulation system, 5) heating, ventilation and air conditioning system, 6) tritium clean-up system, 7) cooling and baking system, 8) waste treatment and storage system, 9) control system, 10) electric power system, 11) site factory plan, all of which are a part of FY86 design work. The plant systems described in this report generally have been based on the FY86 FER (ACS Reactor) which is an one of the six candidates for FER. (author)

  17. Initial trade and design studies for the fusion engineering device

    International Nuclear Information System (INIS)

    The Magnetic Fusion Energy Engineering Act of 1980 calls for the operation of a Fusion Engineering Device (FED) by 1990. It is the intent of the Act that the FED, in combination with other testing facilities, will establish the engineering feasibility of magnetic fusion energy. The Fusion Engineering Design Center (FEDC), under the guidance of a Technical Management Board (TMB), initiated a program of trade and design studies in October 1980 to support the selection of the FED concept. This document presents the results of these initial trade and design studies. Based on these results, a baseline configuration has been identified and the Design Center effort for the remainder of the fiscal year will be devoted to the development of a self-consistent FED design description

  18. The FCC-ee design study: luminosity and beam polarization

    CERN Document Server

    Koratzinos, M

    2015-01-01

    The FCC-ee accelerator is considered within the FCC design study as a possible first step towards the ultimate goal of a 100 TeV hadron collider. It is a high luminosity e+e- storage ring collider, designed to cover energies of around 90, 160, 240 and 350GeV ECM (for the Z peak, the WW threshold, the ZH and ttbar cross-section maxima respectively) leading to different operating modes. We report on the current status of the design study, on the most promising concepts and relevant challenges. The expected luminosity performance at all energies, and first studies on transverse polarization for beam energy calibrations will be presented.

  19. Preliminary design study of a steady state tokamak device

    International Nuclear Information System (INIS)

    Preliminary design study has been made for a steady tokamak with the plasma current of 10MA, as the next to the JT-60U experimental programs. The goal of the research program is the integrated study of steady state, high-power physics and technology. Present candidate design is to use superconducting TF and PF magnet systems and long pulse operation of 100's-1000's of sec with non inductive current drive mainly by 500keV negative ion beam injection of 60MW. Low activation material such as titanium alloy is chosen for the water tank type vacuum vessel, which is also the nuclear shield for the superconducting coils. The present preliminary design study shows that the device can meet the existing JT-60U facility capability. (author)

  20. Physics and engineering design studies on Large Helical Device

    International Nuclear Information System (INIS)

    The construction of the Large Helical Device (LHD) is progressing as a 7 year project in Japan which began in 1990. This year, necessary research and development programs are nearly reaching the final goal of the original schedule and we have started the construction of the basic parts of LHD. We report on the results of the physics and engineering design studies, and the recent status of the construction of LHD. (author)

  1. Design study of blanket structure for tokamak experimental fusion reactor

    International Nuclear Information System (INIS)

    Design study of the blanket structure for JAERI Experimental Fusion Reactor (JXFR) has been carried out. Studied here were fabrication and testing of the blanket structure (blanket cells, blanket rings, piping and blanket modules), assembly and disassembly of the blanket module, and monitering and testing technique. Problems in design and fabrication of the blanket structure could be revealed. Research and development problems for the future were also disclosed. (author)

  2. Design study for a high-temperature superconductor

    International Nuclear Information System (INIS)

    For linking practically loss-free transformation and reactive power compensation, a design study on a coreless high-temperature superconduction transformer is drawn up the windings of which are united in a coaxial cable which is wound up into a toroidal coil. The influencing parameters which are relevant for the rating, operating characteristics and the application of a transformer like this are discussed. (orig./MM)

  3. FEL Design Studies at LBNL: Activities and Plans

    International Nuclear Information System (INIS)

    LBNL staff are currently pursuing R and D for future x-ray FELs, and participate in two FEL construction projects. Our strategy is to address the most fundamental challenges, which are the cost-drivers and performance limitations of FEL facilities. An internally funded R and D program is aimed at investigating accelerator physics and technologies in three key areas: (1) Theoretical study, modeling, and experimental development of low emittance, high quantum efficiency cathodes; (2) Design studies of electron beam delivery systems, including emittance manipulations, high-resolution modeling of 6-D phase space, and low-emittance beam transport; and (3) Design studies of optical manipulations of electron beams for seeded and SASE FELs, providing short x-ray pulses of variable duration, synchronous with the seed and pump laser sources, and also long transform-limited pulses with a narrow bandwidth. Design studies of means for production of attosecond x-ray pulses at various wavelengths. We are collaborators in the FERMI(at)Elettra seeded FEL facility under construction at Sincrotrone Trieste, Italy, participating in accelerator design and FEL physics studies, and mechanical and electrical engineering. We are participating in the LCLS project at SLAC, implementing our design of stabilized timing and synchronization systems. Here we outline our long-term objectives, and current activities

  4. Bioclimatic maps for tourism purposes

    Science.gov (United States)

    Matzarakis, Andreas; Rudel, Ernest; Zygmuntowski, Markus; Koch, Elisabeth

    Several daily measurements of air temperature, relative humidity, wind velocity and mean cloud cover are required for the calculation of the Physiologically Equivalent Temperature (PET). Using data obtained from daily measurements at 7, 14 and 19 CET over the period from 1991 to 2000 of 201 Austrian climate stations, we analysed the thermal bioclimate in Austria. The calculated PET-values were compared with the results of another computation using synoptic data not only from Austria but also from neighbouring countries. The mean radiant temperature is rather complex, as it covers all relevant short and long-wave radiation fluxes and plays an important role in the energy balance of humans. Based on the individual current conditions, this parameter was calculated using the well-established ‘RayMan’ model, which was development based on guidelines of the German Engineering Society, i.e. VDI 3789 ( VDI, 1994). The mean radiant temperature is determined based on the mean cloud cover and the maximum possible global radiation at a certain time and location. Statistical and GIS methods were used to convert the point-data consisting of PET-values for individual climate stations into a continuous surface. PET was spatially interpolated through a multiple linear regression analysis on a given grid. The results reveal fundamental information which is of particular relevance to the tourism and recreation authorities. The results are also important for spas and wellness resorts.

  5. Design study on sodium-cooled large-scale reactor

    International Nuclear Information System (INIS)

    In Phase 1 of the 'Feasibility Study on Commercialized Fast Reactor Cycle Systems (F/S)', an advanced loop type reactor has been selected as a promising concept of sodium-cooled large-scale reactor, which has a possibility to fulfill the design requirements of the F/S. In Phase 2 of the F/S, it is planed to precede a preliminary conceptual design of a sodium-cooled large-scale reactor based on the design of the advanced loop type reactor. Through the design study, it is intended to construct such a plant concept that can show its attraction and competitiveness as a commercialized reactor. This report summarizes the results of the design study on the sodium-cooled large-scale reactor performed in JFY2001, which is the first year of Phase 2. In the JFY2001 design study, a plant concept has been constructed based on the design of the advanced loop type reactor, and fundamental specifications of main systems and components have been set. Furthermore, critical subjects related to safety, structural integrity, thermal hydraulics, operability, maintainability and economy have been examined and evaluated. As a result of this study, the plant concept of the sodium-cooled large-scale reactor has been constructed, which has a prospect to satisfy the economic goal (construction cost: less than 200,000yens/kWe, etc.) and has a prospect to solve the critical subjects. From now on, reflecting the results of elemental experiments, the preliminary conceptual design of this plant will be preceded toward the selection for narrowing down candidate concepts at the end of Phase 2. (author)

  6. Design study on advanced reprocessing systems for FR fuel cycle

    Energy Technology Data Exchange (ETDEWEB)

    Tanaka, H.; Kawamura, F.; Nishimura, T.; Kamiya, M. [Japan Nuclear Cycle Development Institute, Ibaraki (Japan)

    2001-07-01

    A design study has been carried out for four advanced reprocessing technologies for the future fast rector (FR) recycle systems (advanced aqueous, and three non-aqueous systems based on oxide electrowinning, metal electrorefining, and fluoride volatility methods). The systems were evaluated mainly from the viewpoint of economics. It has been shown that, for MOX fuel reprocessing, all the systems with a capacity of 200 t/y attains the economical target, whereas for such a small capacity as 50 t/y, only the non-aqueous systems have potential to attain the target. For metallic and nitride fuel, a metal electrorefining system has been shown to be advantageous. (author)

  7. Design study of cooling system for tokamak fusion reactor

    International Nuclear Information System (INIS)

    Design study of the reactor cooling system for a tokamak fusion reactor has been carried out. In the cooling system of an experimental 150 MWt fusion reactor, to grasp the plant concept and clarify the R and D items the main cooling system and the tritium recovery system were designed and the auxiliary system was examined. In the cooling system of a commercial 2000 MWt fusion reactor, to study the plant and environment safety the main cooling system and the tritium recovery system were designed, including the evaluation of water leakage and tritium penetration in the steam generators. (auth.)

  8. Alpha low-level stored waste systems design study

    International Nuclear Information System (INIS)

    The Stored Waste System Design Study (SWSDS), commissioned by the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examines relative life-cycle costs associated with three system concepts for processing the alpha low-level waste (alpha-LLW) stored at the Radioactive Waste Management Complex's Transuranic Storage Area at the INEL. The three system concepts are incineration/melting; thermal treatment/solidification; and sort, treat, and repackage. The SWSDS identifies system functional and operational requirements and assesses implementability; effectiveness; cost; and demonstration, testing, and evaluation (DT ampersand E) requirements for each of the three concepts

  9. Design studies on high current and grid control electron gun

    International Nuclear Information System (INIS)

    Electron gun, the source of electrons, is a kind of ultrahigh vacuum device and plays an important role in different kind of accelerators. With the irradiation accelerator demands, describes the design studies on beam optics optimization. The simulation result shows that the beam current is above 5 A with cathode voltage of 80 kV and beam emittance, gun electric field and beam waist radius meet the accelerator needs. The electron gun manufactured and installed in the test stand, the conditioning and test will be done in the near future. (authors)

  10. Conceptual design study of Fusion Experimental Reactor (FY87FER)

    International Nuclear Information System (INIS)

    This report describes the results of the design coordination and the conceptual design study on plant systems which have been carried out as a part of the design work for the Fusion Experimental Reactor (FY87 FER). The former contains the selection of the reference concept for FY87 FER and giving it flexibility, directions for study and assessment of low physics risk reactors, and the revision of system integration, while the latter mainly describes the design philosophies, construction of systems, and the results of designs and analyses of processes and systems. (author)

  11. Conceptual design study of a scyllac fusion test reactor

    International Nuclear Information System (INIS)

    The report describes a conceptual design study of a fusion test reactor based on the Scyllac toroidal theta-pinch approach to fusion. It is not the first attempt to describe the physics and technology required for demonstrating scientific feasibility of the approach, but it is the most complete design in the sense that the physics necessary to achieve the device goals is extrapolated from experimentally tested MHD theories of toroidal systems,and it uses technological systems whose engineering performance has been carefully calculated to ensure that they meet the machine requirements

  12. Conceptual design study of a scyllac fusion test reactor

    Energy Technology Data Exchange (ETDEWEB)

    Thomassen, K.I. (comp.)

    1975-07-01

    The report describes a conceptual design study of a fusion test reactor based on the Scyllac toroidal theta-pinch approach to fusion. It is not the first attempt to describe the physics and technology required for demonstrating scientific feasibility of the approach, but it is the most complete design in the sense that the physics necessary to achieve the device goals is extrapolated from experimentally tested MHD theories of toroidal systems,and it uses technological systems whose engineering performance has been carefully calculated to ensure that they meet the machine requirements.

  13. Design study on advanced reprocessing systems for FR fuel cycle

    International Nuclear Information System (INIS)

    A design study has been carried out for four advanced reprocessing technologies for the future fast rector (FR) recycle systems (advanced aqueous, and three non-aqueous systems based on oxide electrowinning, metal electrorefining, and fluoride volatility methods). The systems were evaluated mainly from the viewpoint of economics. It has been shown that, for MOX fuel reprocessing, all the systems with a capacity of 200 t/y attains the economical target, whereas for such a small capacity as 50 t/y, only the non-aqueous systems have potential to attain the target. For metallic and nitride fuel, a metal electrorefining system has been shown to be advantageous. (author)

  14. Forest fire advanced system technology (FFAST) conceptual design study

    Science.gov (United States)

    Nichols, J. David; Warren, John R.

    1987-01-01

    The National Aeronautics and Space Administration's Jet Propulsion Laboratory (JPL) and the U.S. Department of Agriculture (USDA) Forest Service completed a conceptual design study that defined an integrated forest fire detection and mapping system that will be based upon technology available in the 1990s. Potential system configuration options in emerging and advanced technologies related to the conceptual design were identified and recommended for inclusion as preferred system components. System component technologies identified for an end-to-end system include airborne mounted, thermal infrared (IR) linear array detectors, automatic onboard georeferencing and signal processing, geosynchronous satellite communications links, and advanced data integration and display. Potential system configuration options were developed and examined for possible inclusion in the preferred system configuration. The preferred system configuration will provide increased performance and be cost effective over the system currently in use. Forest fire management user requirements and the system component emerging technologies were the basis for the system configuration design. The conceptual design study defined the preferred system configuration that warrants continued refinement and development, examined economic aspects of the current and preferred system, and provided preliminary cost estimates for follow-on system prototype development.

  15. Conceptual design study of the fusion experimental reactor (FER)

    International Nuclear Information System (INIS)

    A conceptual design study of the Fusion Experimental Reactor (FER) is presented. FER is planned, on the basis of a domestic programme, as a device to explore reasonable minimum physics and technological issues necessary to proceed to DEMO. Among various concepts, including the improvement of ITER-like design, the reference design of FER is chosen as size-minimum and a detailed design study is performed. LHCD assist and a single null divertor configuration are employed to reduce the device size. Simplification and the resultant reliability are attained by the appropriate choice of the fluence, 0.3 MW·a·m-2. A variety of new ideas are explored to develop the FER concept. A layered structure of the divertor for a reliable maintenance scheme and a uniform vacuum vessel with a thin double wall structure for providing structural simplicity and tritium double containment are typical examples. R and D programmes for these key reactor components are now actively being promoted in conjunction with this design activity. (author). 4 refs, 2 figs, 1 tab

  16. Preliminary Systems Design Study assessment report. Volume 8, Appendixes

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1992-01-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex`s Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. This volume of the Systems Design Study contain four Appendixes that were part of the study. Appendix A is an EG&G Idaho, Inc., report that represents a review and compilation of previous reports describing the wastes and quantities disposed in the Subsurface Disposal Area of the Idaho National Engineering Laboratory. Appendix B contains the process flowsheets considered in this study, but not selected for detailed analysis. Appendix C is a historical tabulation of radioactive waste incinerators. Appendix D lists Department of Energy facilities where cementation stabilization systems have been used.

  17. Design study of an upgraded charge breeder for ISOLDE

    CERN Document Server

    Shornikov, A; Wenander, F; Pikin, A

    2013-01-01

    In this work we present our progress in the design study of a new Electron Beam Ion Source (EBIS) to be installed as a charge breeder for reacceleration of rare ions at ISOLDE. The work is triggered by the HIE-ISOLDE upgrade {[}1] and the planned TSR@ISOLDE project {[}2]. To fulfill the requests of the user community the new EBIS should reach an electron beam density of 10(4) A/cm(2) at electron energies up to 150 key and, provide UHV environment and ion cooling in the breeding region to ensure confinement of the ions long enough to reach the requested charge states. We report on the established design parameters and first prototyping steps towards production and testing of suitable equipment. (C) 2013 Elsevier B.V. All rights reserved.

  18. Preliminary design study of a large scale graphite oxidation loop

    International Nuclear Information System (INIS)

    A preliminary design study of a large scale graphite oxidation loop was performed in order to assess feasibility and to estimate capital costs. The nominal design operates at 50 atmospheres helium and 1800 F with a graphite specimen 30 inches long and 10 inches in diameter. It was determined that a simple single walled design was not practical at this time because of a lack of commercially available thick walled high temperature alloys. Two alternative concepts, at reduced operating pressure, were investigated. Both were found to be readily fabricable to operate at 1800 F and capital cost estimates for these are included. A design concept, which is outside the scope of this study, was briefly considered

  19. Design study of a medical proton linac for neutron therapy

    International Nuclear Information System (INIS)

    This paper describes a design study which establishes the physical parameters of the low energy beam transport, radiofrequency quadrupole, and linac, using computer programs available at Fermilab. Beam dynamics studies verify that the desired beam parameters can be achieved. The machine described here meets the aforementioned requirements and can be built using existing technology. Also discussed are other technically feasible options which could be attractive to clinicians, though they would complicate the design of the machine and increase construction costs. One of these options would allow the machine to deliver 2.3 MeV protons to produce epithermal neutrons for treating brain tumors. A second option would provide 15 MeV protons for isotope production. 21 refs., 33 figs

  20. Conceptual design study of Fusion Experimental Reactor (FY87FER)

    International Nuclear Information System (INIS)

    The design study of Fusion Experimental Reactor(FER) which has been proposed to be the next step fusion device has been conducted by JAERI Reactor System Laboratory since 1982 and by FER design team since 1984. This is the final report of the FER design team program and describes the results obtained in FY1987 (partially in FY1986) activities. The contents of this report consist of the reference design which is based on the guideline in FY1986 by the Subcomitees set up in Nuclear Fusion Council of Atomic Energy Commission of Japan, the Low-Physics-Risk reactor design for achieving physics mission more reliably and the system study of FER design candidates including above two designs. (author)

  1. Advanced stratified charge rotary aircraft engine design study

    Science.gov (United States)

    Badgley, P.; Berkowitz, M.; Jones, C.; Myers, D.; Norwood, E.; Pratt, W. B.; Ellis, D. R.; Huggins, G.; Mueller, A.; Hembrey, J. H.

    1982-01-01

    A technology base of new developments which offered potential benefits to a general aviation engine was compiled and ranked. Using design approaches selected from the ranked list, conceptual design studies were performed of an advanced and a highly advanced engine sized to provide 186/250 shaft Kw/HP under cruise conditions at 7620/25,000 m/ft altitude. These are turbocharged, direct-injected stratified charge engines intended for commercial introduction in the early 1990's. The engine descriptive data includes tables, curves, and drawings depicting configuration, performance, weights and sizes, heat rejection, ignition and fuel injection system descriptions, maintenance requirements, and scaling data for varying power. An engine-airframe integration study of the resulting engines in advanced airframes was performed on a comparative basis with current production type engines. The results show airplane performance, costs, noise & installation factors. The rotary-engined airplanes display substantial improvements over the baseline, including 30 to 35% lower fuel usage.

  2. Fusion reactor design studies: standard accounts for cost estimates

    International Nuclear Information System (INIS)

    The fusion reactor design studies--standard accounts for cost estimates provides a common format from which to assess the economic character of magnetically confined fusion reactor design concepts. The format will aid designers in the preparation of design concept costs estimates and also provide policymakers with a tool to assist in appraising which design concept may be economically promising. The format sets forth a categorization and accounting procedure to be used when estimating fusion reactor busbar energy cost that can be easily and consistently applied. Reasons for developing the procedure, explanations of the procedure, justifications for assumptions made in the procedure, and the applicability of the procedure are described in this document. Adherence to the format when evaluating prospective fusion reactor design concepts will result in the identification of the more promising design concepts thus enabling the fusion power alternatives with better economic potential to be quickly and efficiently developed

  3. Tritium system design studies of fusion experimental breeder

    International Nuclear Information System (INIS)

    A summary of the tritium system design studies for the engineering outline design of a fusion experimental breeder (FEB-E) is presented. This paper is divided into three sections. In first section, the geometry, loading features and tritium concentrations in liquid lithium of tritium breeding zones of blanket are described. The tritium flow chart corresponding to the tritium fuel cycle system has been constructed, and the inventories in ten subsystems are calculated using SWITRIM code in section 2. Results show that the necessary initial tritium storage to start up FEB-E with fusion power of 143 MW is about 319 g. In final section, the tritium leakage issues under different operation circumstances have been analyzed. It was found that the potential danger of tritium leakage could be resulted from the exhausted gas of the diverter system. It is important to elevate the tritium burnup fraction and reduce the tritium throughput. (authors)

  4. Preliminary systems design study assessment report. Volume 7, Subsystem concepts

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1992-01-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex`s Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each. This volume contains the descriptions and other relevant information of the four subsystems required for most of the ex situ processing systems. This volume covers the metal decontamination and sizing subsystem, soils processing subsystem, low-level waste subsystem, and retrieval subsystem.

  5. Laser fusion driven breeder design study. Final report

    International Nuclear Information System (INIS)

    The results of the Laser Fusion Breeder Design Study are given. This information primarily relates to the conceptual design of an inertial confinement fusion (ICF) breeder reactor (or fusion-fission hybrid) based upon the HYLIFE liquid metal wall protection concept developed at Lawrence Livermore National Laboratory. The blanket design for this breeder is optimized to both reduce fissions and maximize the production of fissile fuel for subsequent use in conventional light water reactors (LWRs). When the suppressed fission blanket is compared with its fast fission counterparts, a minimal fission rate in the blanket results in a unique reactor safety advantage for this concept with respect to reduced radioactive inventory and reduced fission product decay afterheat in the event of a loss-of-coolant-accident

  6. Design studies of continuously variable transmissions for electric vehicles

    Science.gov (United States)

    Parker, R. J.; Loewenthal, S. H.; Fischer, G. K.

    1981-01-01

    Preliminary design studies were performed on four continuously variable transmission (CVT) concepts for use with a flywheel equipped electric vehicle of 1700 kg gross weight. Requirements of the CVT's were a maximum torque of 450 N-m (330 lb-ft), a maximum output power of 75 kW (100 hp), and a flywheel speed range of 28,000 to 14,000 rpm. Efficiency, size, weight, cost, reliability, maintainability, and controls were evaluated for each of the four concepts which included a steel V-belt type, a flat rubber belt type, a toroidal traction type, and a cone roller traction type. All CVT's exhibited relatively high calculated efficiencies (68 percent to 97 percent) over a broad range of vehicle operating conditions. Estimated weight and size of these transmissions were comparable to or less than equivalent automatic transmission. The design of each concept was carried through the design layout stage.

  7. Design study of the KIRAMS-430 superconducting cyclotron magnet

    Science.gov (United States)

    Kim, Hyun Wook; Kang, Joonsun; Hong, Bong Hwan; Jung, In Su

    2016-07-01

    Design study of superconducting cyclotron magnet for the carbon therapy was performed at the Korea Institute of Radiological and Medical Science (KIRAMS). The name of this project is The Korea Heavy Ion Medical Accelerator (KHIMA) project and a fixed frequency cyclotron with four spiral sector magnet was one of the candidate for the accelerator type. Basic parameters of the cyclotron magnet and its characteristics were studied. The isochronous magnetic field which can guide the 12C6+ ions up to 430 MeV/u was designed and used for the single particle tracking simulation. The isochronous condition of magnetic field was achieved by optimization of sector gap and width along the radius. Operating range of superconducting coil current was calculated and changing of the magnetic field caused by mechanical deformations of yokes was considered. From the result of magnetic field design, structure of the magnet yoke was planned.

  8. Design Study of a Superconducting Gantry for Carbon Beam Therapy

    CERN Document Server

    Kim, J

    2016-01-01

    This paper describes the design study of a gantry for a carbon beam. The designed gantry is compact such that its size is comparable to the size of the proton gantry. This is possible by introducing superconducting double helical coils for dipole magnets. The gantry optics is designed in such a way that it provides rotation-invariant optics and variable beam size as well as point-to-parallel scanning of a beam. For large-aperture magnet, three-dimensional magnetic field distribution is obtained by invoking a computer code, and a number of particles are tracked by integrating equations of motion numerically together with three-dimensional interpolation. The beam-shape distortion due to the fringe field is reduced to an acceptable level by optimizing the coil windings with the help of genetic algorithm. Higher-order transfer coefficients are calculated and shown to be reduced greatly with appropriate optimization of the coil windings.

  9. Design studies of an aluminum first wall for INTOR

    International Nuclear Information System (INIS)

    Besides the high erosion rates (including evaporation) expected for INTOR, there may also be high heat fluxes to the first wall, e.g., approx. 9 (Case I) to 24 (Case II) W/cm2, from two sources - radiation and charge exchange neutrals. There will also be internal heat generation by neutron and gamma deposition. An aluminum first wall design is analyzed, which substantially reduces concerns about survivability of the first wall during INTOR's operating life

  10. Design study on gas turbine high temperature reactor (GTHTR300)

    International Nuclear Information System (INIS)

    Japan Atomic Energy Research Institute (JAERI) has been conducting the design study of an original design concept of gas turbine high temperature reactor, the GTHTR300 (Gas Turbine High Temperature Reactor 300). The GTHTR300 is a greatly simplified HTGR-GT plant that leads to substantially reduced technical and cost requirements for earlier technology deployment. Also, it is expected to be an efficient and economically competitive reactor in 2010s due to newly proposed design features such as core design with two-year refueling interval, conventional steel material usage for a reactor pressure vessel, innovative plant flow scheme and horizontally installed gas turbine unit. This paper describes the original design features focusing on reactor core design, fuel design, in-core structure design and reactor pressure vessel design. In addition, a preliminary cost evaluation proved that the capital cost of the GTHTR300 is less than a target cost of 200 thousands Yen/kWe. The present study is entrusted from the Ministry of Education, Culture, Sports, Science and Technology of Japan. (author)

  11. Outline and Status of the FCC-ee Design Study

    CERN Document Server

    Zimmermann, Frank

    2015-01-01

    The Update of the European Strategy for Particle Physics in 2013 [1] declared as its second highest priority that “…to propose an ambitious post-LHC accelerator project….., CERN should undertake design studies for accelerator projects in a global context,…with emphasis on proton-proton and electron-positron high-energy frontier machines…”. In response to this request, the global Future Circular Collider (FCC) study is designing a 100-TeV proton collider (FCC-hh) in a new ~100 km tunnel near Geneva, a high-luminosity electron-positron collider (FCC-ee) as a potential intermediate step, and a lepton-hadron option (FCC-he). The FCC study comprises accelerators, technology, infrastructure, detector, physics, concepts for worldwide data services, international governance models, and implementation scenarios. The FCC study is mandated to deliver a Conceptual Design Report and preliminary cost estimate by the time of the next European Strategy Update expected for 2019. As of July 2015, 58 institutes from...

  12. Preliminary design studies on the Broad Application Test Reactor

    International Nuclear Information System (INIS)

    This report describes progress made at the Idaho National Engineering Laboratory during the first three quarters of Fiscal Year (FY) 1992 on the Laboratory-Directed Research and Development (LDRD) project to perform preliminary design studies on the Broad Application Test Reactor (BATR). This work builds on the FY-92 BATR studies, which identified anticipated mission and safety requirements for BATR and assessed a variety of reactor concepts for their potential capability to meet those requirements. The main accomplishment of the FY-92 BATR program is the development of baseline reactor configurations for the two conventional conceptual test reactors recommended in the FY-91 report. Much of the present report consists of descriptions and neutronics and thermohydraulics analyses of these baseline configurations. In addition, we considered reactor safety issues, compared the consequences of steam explosions for alternative conventional fuel types, explored a Molten Chloride Fast Reactor concept as an alternate BATR design, and examined strategies for the reduction of operating costs. Work planned for the last quarter of FY-92 is discussed, and recommendations for future work are also presented

  13. Conceptual Design Study of JSFR (2) - Reactor System

    International Nuclear Information System (INIS)

    Several innovative technologies are adopted in the JSFR design to meet the high level requirements for economic competitiveness in the design requirements. The cost-down approaches for JSFR are as follows. In order to reduce the amount of structural materials, the diameter of the reactor vessel shall be minimized and the reactor internal structures shall be simplified. The reduction of the reactor vessel diameter is achieved by adopting a advanced refueling system and the hot reactor vessel with high temperature wall. The flow velocity in the reactor upper plenum increases because the diameter of the reactor vessel is decreased. As the result, the coolant flow field in reactor upper plenum is severe. The optimization of the coolant flow field in the reactor upper plenum was carried out for prevention the cover gas entrainment and the vortex cavitations at the hot leg intake. In addition, structural integrities for seismic loadings and thermal loadings were evaluated because the design seismic loading was highly increased and the vessel wall is directly exposed to the thermal transients of the upper plenum. This paper describes the characteristics and the results of the design study of the reactor system. (author)

  14. Design study of a test stand for ITER gyrotron

    International Nuclear Information System (INIS)

    In the frame of development of the ITER electron cyclotron wave (ECW) system, a two MW CW coaxial cavity gyrotron will be developed during the Sixth Framework Program (2003-2006). Such development relies on the availability of a test stand capable of providing the electrical energy and cooling capacity. This test stand will possibly be used, in a later stage, for the component test of the ITER ECW system. This paper will first present the main parameters of this new coaxial gyrotron. Then we describe the test stand itself, including the general requirements for testing and evaluating the behaviour of the RF source and then a description of the electrical system design. Compared to the ITER reference design, the test stand emphasises the requirement of flexibility, which is necessary during the development of the gyrotron. The additional electrical equipment is included in the overview of the electrical system. The cooling system will be an important part of the design study. Indeed, the design efficiency of such a depressed collector gyrotron is ∼50%, implying >4 MW of continuous heat dissipation and evacuation by the cooling equipment. The specifications of the cooling system must also comply with ITER reference design values

  15. Conceptual design study of fusion experimental reactor (FER)

    International Nuclear Information System (INIS)

    Since 1980 the design study has been conducted at JAERI for the Fusion Experimental Reactor (FER) which has been proposed to be the next machine to JT-60 in the Japanese long term program of fusion reactor development. During two years from 1984 to 1985 FER concept was reviewed and redesigned. This report is the summary of the results obtained in the review and redesign activities in 1984 and 85. In the first year FER concept was discussed again and its frame work was reestablished. According to the new frame work the major reactor components of FER were designed. In the second year the whole plant system design including plant layout plan was conducted as well as the more detailed design analysis of the reactor conponents. The newly established frame for FER design is as follows: 1) Plasma : Self-ignition. 2) Operation scenario : Quasi-steady state operation with long burn pulse. 3) Neutron fluence on the first wall : 0.3 MWY/M2. 4) Blanket : Non-tritium breeding blanket with test modules for breeding blanket development. 5) Magnets : Superconducting Magnets. (author)

  16. Design study of long-life PWR using thorium cycle

    Science.gov (United States)

    Subkhi, Moh. Nurul; Su'ud, Zaki; Waris, Abdul

    2012-06-01

    Design study of long-life Pressurized Water Reactor (PWR) using thorium cycle has been performed. Thorium cycle in general has higher conversion ratio in the thermal spectrum domain than uranium cycle. Cell calculation, Burn-up and multigroup diffusion calculation was performed by PIJ-CITATION-SRAC code using libraries based on JENDL 3.2. The neutronic analysis result of infinite cell calculation shows that 231Pa better than 237Np as burnable poisons in thorium fuel system. Thorium oxide system with 8% 233U enrichment and 7.6˜ 8% 231Pa is the most suitable fuel for small-long life PWR core because it gives reactivity swing less than 1% Δk/k and longer burn up period (more than 20 year). By using this result, small long-life PWR core can be designed for long time operation with reduced excess reactivity as low as 0.53% Δk/k and reduced power peaking during its operation.

  17. Design study of a high power rotary transformer

    Science.gov (United States)

    Weinberger, S. M.

    1982-01-01

    A design study was made on a rotary transformer for transferring electrical power across a rotating spacecraft interface. The analysis was performed for a 100 KW, 20 KHz unit having a ""pancake'' geometry. The rotary transformer had a radial (vertical) gap and consisted of 4-25 KW modules. It was assumed that the power conditioning comprised of a Schwarz resonant circuit with a 20 KHz switching frequency. The rotary transformer, mechanical and structural design, heat rejection system and drive mechanism which provide a complete power transfer device were examined. The rotary transformer losses, efficiency, weight and size were compared with an axial (axial symmetric) gap transformer having the same performance requirements and input characteristics which was designed as part of a previous program. The ""pancake'' geometry results in a heavier rotary transformer primarily because of inefficient use of the core material. It is shown that the radial gap rotary transformer is a feasible approach for the transfer of electrical power across a rotating interface and can be implemented using presently available technology.

  18. Conceptual design study of fusion experimental reactor (FY86 FER)

    International Nuclear Information System (INIS)

    This report describes the results of the reactor configuration/structure design for the fusion experimental reactor (FER) performed in FY 1986. The design was intended to meet the physical and engineering mission of the next step device which was decided by the subcommittee on the next step device of the nuclear fusion council. The objectives of the design study in FY 1986 are to advance and optimize the design concept of the last year because the recommendation of the subcommittee was basically the same as the design philosophy of the last year. Six candidate reactor configurations which correspond to options C ∼ D presented by the subcommittee were extensively examined. Consequently, ACS reactor (Advanced Option-C with Single Null Divertor) was selected as the reference configuration from viewpoints of technical risks and cost performance. Regarding the reactor structure, the following items were investigated intensively: minimization of reactor size, protection of first wall against plasma disruption, simplification of shield structure, reactor configuration which enables optimum arrangement of poloidal field coils. (author)

  19. Shape-dependent designability studies of lattice proteins

    International Nuclear Information System (INIS)

    One important problem in computational structural biology is protein designability, that is, why protein sequences are not random strings of amino acids but instead show regular patterns that encode protein structures. Many previous studies that have attempted to solve the problem have relied upon reduced models of proteins. In particular, the 2D square and the 3D cubic lattices together with reduced amino acid alphabet models have been examined extensively and have led to interesting results that shed some light on the evolutionary relationship among proteins. Here we perform designability studies on the 2D square lattice and explore the effects of variable overall shapes on protein designability using a binary hydrophobic-polar (HP) amino acid alphabet. Because we rely on a simple energy function that counts the total number of H-H interactions between non-sequential residues, we restrict our studies to protein shapes that have the same number of residues and also a constant number of non-bonded contacts. We have found that there is a marked difference in the designability between various protein shapes, with some of them accounting for a significantly larger share of the total foldable sequences

  20. Summary of conceptual design study of fusion experimental reactor (FER)

    International Nuclear Information System (INIS)

    Since 1980 the design study has been conducted at JAERI for the Fusion Experimental Reactor (FER) which has been proposed to be the next machine to JT-60 in the Japanese long term program of fusion reactor development. Starting from 1984 FER design is now being reviewed and redesigned. This report is the summary of the report which describes the results obtained in the review and redesign activities in 1984. The following three steps are followed in those activities ; critical issues study step in which FER critical issues were reviewed and the frame of FER design was revised, torus structure selection step in which a few options within the frame for FER were examined and design step in which major components of the torus structure were designed. The newly established frame for FER design is as follows : 1) Plasma : Self-ignition, 2) Operation scenario : Quasi-steady state operation with long burn pulse, 3) Neutron fluence on the first wall : 0.3 MWY/m2, 4) Blanket : Non-tritium breeding blanket with test modules for breeding blanket development, 5) Magnets : Superconducting Magnets. (author)

  1. Status of PEP-X Light Source Design Study

    Energy Technology Data Exchange (ETDEWEB)

    Bane, K.L.F.; Bertsche, K.J.; Cai, Y.; Chao, A.; Huang, X.; Jiao, Y.; Ng, C.-K.; Nosochkov, Y.; Novokhatski, A.; Rivetta, C.H.; Safranek, J.A.; Stupakov, G.V.; Wang, L.; Wang, M.-H.; Xiao, L.; /SLAC; Hettel, R.O.; /SLAC; Rabedeau, T.; /SLAC

    2011-12-14

    The SLAC Beam Physics group and other SLAC collaborators continue to study options for implementing a near diffraction-limited ring-based light source in the 2.2-km PEP-II tunnel that will serve the SSRL scientific program in the future. The study team has completed the baseline design for a 4.5-GeV storage ring having 160 pm-rad emittance with stored beam current of 1.5 A, providing >10{sup 22} brightness for multi-keV photon beams from 3.5-m undulator sources. The team has also investigated possible 5-GeV ERL configurations which, similar to the Cornell and KEK ERL plans, would have {approx}30 pm-rad emittance with 100 mA current, and {approx}10 pm-rad emittance with 25 mA or less. Now a 4.5-GeV 'ultimate' storage ring having emittance similar to the ERL and operating with {approx}200 mA is under study. An overview of the progress of the PEP-X design study and SSRL's plans for defining performance parameters that will guide the choice of ring options is presented.

  2. Shape-dependent designability studies of lattice proteins

    Energy Technology Data Exchange (ETDEWEB)

    Peto, Myron [Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA 50011-3020 (United States); Kloczkowski, Andrzej [Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA 50011-3020 (United States); Jernigan, Robert L [Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA 50011-3020 (United States)

    2007-07-18

    One important problem in computational structural biology is protein designability, that is, why protein sequences are not random strings of amino acids but instead show regular patterns that encode protein structures. Many previous studies that have attempted to solve the problem have relied upon reduced models of proteins. In particular, the 2D square and the 3D cubic lattices together with reduced amino acid alphabet models have been examined extensively and have led to interesting results that shed some light on the evolutionary relationship among proteins. Here we perform designability studies on the 2D square lattice and explore the effects of variable overall shapes on protein designability using a binary hydrophobic-polar (HP) amino acid alphabet. Because we rely on a simple energy function that counts the total number of H-H interactions between non-sequential residues, we restrict our studies to protein shapes that have the same number of residues and also a constant number of non-bonded contacts. We have found that there is a marked difference in the designability between various protein shapes, with some of them accounting for a significantly larger share of the total foldable sequences.

  3. Shape-dependent designability studies of lattice proteins.

    Science.gov (United States)

    Peto, Myron; Kloczkowski, Andrzej; Jernigan, Robert L

    2007-07-18

    One important problem in computational structural biology is protein designability, that is, why protein sequences are not random strings of amino acids but instead show regular patterns that encode protein structures. Many previous studies that have attempted to solve the problem have relied upon reduced models of proteins. In particular, the 2D square and the 3D cubic lattices together with reduced amino acid alphabet models have been examined extensively and have lead to interesting results that shed some light on evolutionary relationship among proteins. Here we perform designability studies on the 2D square lattice and explore the effects of variable overall shapes on protein designability using a binary hydrophobic-polar (HP) amino acid alphabet. Because we rely on a simple energy function that counts the total number of H-H interactions between non-sequential residues, we restrict our studies to protein shapes that have the same number of residues and also a constant number of non-bonded contacts. We have found that there is a marked difference in the designability between various protein shapes, with some of them accounting for a significantly larger share of the total foldable sequences. PMID:18079979

  4. Feasibility study on floating nuclear power plant (2). Safety design study of FNPP. Contract research

    International Nuclear Information System (INIS)

    In the previous report of 'Conceptual Design Study of FNPP (Floating Nuclear Power Plant)', a design study on a concept for FNPP, which is sited off the sea coast on the open sea with water depth of 20m and it is moored on protected sea by the breakwater was conducted and the floating platform guarded by the breakwater was found to be stable enough to install the nuclear power plant from analysis simulating the movement of the platform due to sea wave or wind. In this report, studies on a basic safety design concept of the FNPP, setting natural phenomena for design condition, required safety functions and a review on dynamic analysis of the large floating structure are presented. The studies revealed that the stability of the floating platform is an essential issue for the FNPP soundness, and the design base natural phenomena such as S1 and S2-class storm including S1 and S2-class earthquake should be considered in evaluation of the stability of the floating platform, and it is one of key technical subjects how to set the magnitude of these storm in application of design evaluation on each FNPP case. (J.P.N.)

  5. Public Utility Regulatory Policies Act of 1978: Natural Gas Rate Design Study

    Energy Technology Data Exchange (ETDEWEB)

    None

    1980-05-01

    First, the comments on May 3, 1979 Notice of Inquiry of DOE relating to the Gas Utility Rate Design Study Required by Section 306 of PURPA are presented. Then, comments on the following are included: (1) ICF Gas Utility Model, Gas Utility Model Data Outputs, Scenario Design; (2) Interim Model Development Report with Example Case Illustrations; (3) Interim Report on Simulation of Seven Rate Forms; (4) Methodology for Assessing the Impacts of Alternative Rate Designs on Industrial Energy Use; (5) Simulation of Marginal-Cost-Based Natural Gas Rates; and (6) Preliminary Discussion Draft of the Gas Rate Design Study. Among the most frequent comments expressed were the following: (a) the public should be given the opportunity to review the final report prior to its submission to Congress; (b) results based on a single computer model of only four hypothetical utility situations cannot be used for policy-making purposes for individual companies or the entire gas industry; (c) there has been an unobjective treatment of traditional and economic cost rate structures; the practical difficulties and potential detrimental consequences of economic cost rates are not fully disclosed; and (d) it is erroneous to assume that end users, particularly residential customers, are influenced by price signals in the rate structure, as opposed to the total bill.

  6. Preliminary Design Study for a National Digital Seismograph Network

    Science.gov (United States)

    Peterson, Jon; Hutt, Charles R.

    1981-01-01

    Introduction Recently, the National Research Council published a report by the Panel on National, Regional, and Local Seismograph Networks of the Committee on Seismology in which the principal recommendation was for the establishment of a national digital seismograph network (NDSN). The Panel Report (Bolt, 1980) addresses both the need and the scientific requirements for the new national network. The purpose of this study has been to translate the scientific requirements into an instrumentation concept for the NSDS. There are literally hundreds, perhaps thousands, of seismographs in operation within the United States. Each serves an important purpose, but most have limited objectives in time, in region, or in the types of data that are being recorded. The concept of a national network, funded and operated by the Federal Government, is based on broader objectives that include continuity of time, uniform coverage, standardization of data format and instruments, and widespread use of the data for a variety of research purposes. A national digital seismograph network will be an important data resource for many years to come; hence, its design is likely to be of interest to most seismologists. Seismologists have traditionally been involved in the development and field operation of seismic systems and thus have been familiar with both the potential value and the limitations of the data. However, in recent years of increasing technological sophistication, the development of data sstems has fallen more to system engineers, and this trend is likely to continue. One danger in this is that the engineers may misinterpret scientific objectives or subordinate them to purely technological considerations. Another risk is that the data users may misuse or misinterpret the data because they are not aware of the limitations of the data system. Perhaps the most important purpose of a design study such as this is to stimulate a dialogue between system engineers and potential data users

  7. Ultra-Supercritical Pressure CFB Boiler Conceptual Design Study

    Energy Technology Data Exchange (ETDEWEB)

    Zhen Fan; Steve Goidich; Archie Robertson; Song Wu

    2006-06-30

    Electric utility interest in supercritical pressure steam cycles has revived in the United States after waning in the 1980s. Since supercritical cycles yield higher plant efficiencies than subcritical plants along with a proportional reduction in traditional stack gas pollutants and CO{sub 2} release rates, the interest is to pursue even more advanced steam conditions. The advantages of supercritical (SC) and ultra supercritical (USC) pressure steam conditions have been demonstrated in the high gas temperature, high heat flux environment of large pulverized coal-fired (PC) boilers. Interest in circulating fluidized bed (CFB) combustion, as an alternative to PC combustion, has been steadily increasing. Although CFB boilers as large as 300 MWe are now in operation, they are drum type, subcritical pressure units. With their sizes being much smaller than and their combustion temperatures much lower than those of PC boilers (300 MWe versus 1,000 MWe and 1600 F versus 3500 F), a conceptual design study was conducted herein to investigate the technical feasibility and economics of USC CFB boilers. The conceptual study was conducted at 400 MWe and 800 MWe nominal plant sizes with high sulfur Illinois No. 6 coal used as the fuel. The USC CFB plants had higher heating value efficiencies of 40.6 and 41.3 percent respectively and their CFB boilers, which reflect conventional design practices, can be built without the need for an R&D effort. Assuming construction at a generic Ohio River Valley site with union labor, total plant costs in January 2006 dollars were estimated to be $1,551/kW and $1,244/kW with costs of electricity of $52.21/MWhr and $44.08/MWhr, respectively. Based on the above, this study has shown that large USC CFB boilers are feasible and that they can operate with performance and costs that are competitive with comparable USC PC boilers.

  8. Dedicated medical ion accelerator design study. Final report

    International Nuclear Information System (INIS)

    Results and conclusions are reported from a design study for a dedicated medical accelerator. Basing efforts on the current consensus regarding medical requirements, the resulting demands on accelerator and beam delivery systems were analyzed, and existing accelerator technology was reviewed to evaluate the feasibility of meeting these demands. This general analysis was augmented and verified by preparing detailed preliminary designs for sources of therapeutic beams of neutrons, protons and heavy ions. The study indicates that circular accelerators are the most desirable and economical solutions for such sources. Synchrotrons are clearly superior for beams of helium and heavier ions, while synchrotrons and cyclotrons seem equally well suited for protons although they have different strengths and weaknesses. Advanced techniques of beam delivery are of utmost importance in fully utilizing the advantages of particle beams. Several issues are invloved here. First, multi-treatment room arrangements are essential for making optimal use of the high dose rate capabilities of ion accelerators. The design of corresponding beam switching systems, the principles of which are already developed for physics experimental areas, pose no problems. Second, isocentric beam delivery substantially enhances flexibility of dose delivery. After several designs for such devices were completed, it was concluded that high field magnets are necessary to keep size, bulk and cost acceptable. Third, and most important, is the generation of large, homogeneous radiation fields. This is presently accomplished with the aid of scattering foils, occluding rings, collimators, ridge filters, and boluses. A novel approach, three-dimensional beam scanning, was developed here, and the most demanding components of such a system (fast-scanning magnet and power supply) were built and tested

  9. IFMIF - Design Study for in Situ Creep Fatigue Tests

    International Nuclear Information System (INIS)

    While the high flux volume (20-50 dpa/fpy) of the International Fusion Materials Irradiation Facility (IFMIF) is dedicated to the irradiation of ∼ 1100 qualified specimens that will be post irradiation examined after disassembling in dedicated Hot Cells, various in situ experiments are foreseen in the medium flux volume (1-20 dpa/fpy). Of specific importance for structural lifetime assessments of fusion power reactors are instrumented in situ creep-fatigue experiments, as they can simulate realistically a superposition of thermal fatigue or creep fatigue and irradiation with fusion relevant neutrons. Based on former experience with in situ fatigue tests under high energy light ion irradiation, a design study has been performed to evaluate the feasibility of in situ creep fatigue tests in the IFMIF medium flux position. The vertically arranged test module for such experiments consists basically of a frame similar to a universal testing machine, but equipped with three pulling rods, driven by independent step motors, instrumentation systems and specimen cooling systems. Therefore, three creep fatigue specimens may be tested at one time in this apparatus. Each specimen is a hollow tube with coolant flow in the specimen interior to maintain individual specimen temperatures. The recently established IFMIF global 3D geometry model was used together the latest McDeLicious code for the neutral and charged particle transport calculations. These comprehensive neutronics calculations have been performed with a fine special resolution of 0.25 cm3, showing among others that the specimens will be irradiated with a homogeneous damage rate of up to 13(∼ 9%) dpa/fpy and a fusion relevant damage to helium ratio of 10-12 appm He/dpa. In addition, damage and gas production rates as well as the heat deposition in structural parts of the test module have been calculated. Despite of the vertical gradients in the nuclear heating, CFD code calculations with STAR-CD revealed very

  10. Preliminary design study of the TMT Telescope structure system: overview

    Science.gov (United States)

    Usuda, Tomonori; Ezaki, Yutaka; Kawaguchi, Noboru; Nagae, Kazuhiro; Kato, Atsushi; Takaki, Junji; Hirano, Masaki; Hattori, Tomoya; Tabata, Masaki; Horiuchi, Yasushi; Saruta, Yusuke; Sofuku, Satoru; Itoh, Noboru; Oshima, Takeharu; Takanezawa, Takashi; Endo, Makoto; Inatani, Junji; Iye, Masanori; Sadjadpour, Amir; Sirota, Mark; Roberts, Scott; Stepp, Larry

    2014-07-01

    We present an overview of the preliminary design of the Telescope Structure System (STR) of Thirty Meter Telescope (TMT). NAOJ was given responsibility for the TMT STR in early 2012 and engaged Mitsubishi Electric Corporation (MELCO) to take over the preliminary design work. MELCO performed a comprehensive preliminary design study in 2012 and 2013 and the design successfully passed its Preliminary Design Review (PDR) in November 2013 and April 2014. Design optimizations were pursued to better meet the design requirements and improvements were made in the designs of many of the telescope subsystems as follows: 1. 6-legged Top End configuration to support secondary mirror (M2) in order to reduce deformation of the Top End and to keep the same 4% blockage of the full aperture as the previous STR design. 2. "Double Lower Tube" of the elevation (EL) structure to reduce the required stroke of the primary mirror (M1) actuators to compensate the primary mirror cell (M1 Cell) deformation caused during the EL angle change in accordance with the requirements. 3. M1 Segment Handling System (SHS) to be able to make removing and installing 10 Mirror Segment Assemblies per day safely and with ease over M1 area where access of personnel is extremely difficult. This requires semi-automatic sequence operation and a robotic Segment Lifting Fixture (SLF) designed based on the Compliance Control System, developed for controlling industrial robots, with a mechanism to enable precise control within the six degrees of freedom of position control. 4. CO2 snow cleaning system to clean M1 every few weeks that is similar to the mechanical system that has been used at Subaru Telescope. 5. Seismic isolation and restraint systems with respect to safety; the maximum acceleration allowed for M1, M2, tertiary mirror (M3), LGSF, and science instruments in 1,000 year return period earthquakes are defined in the requirements. The Seismic requirements apply to any EL angle, regardless of the

  11. Magnetic Fustion Reactor Design Studies Program final report, 1 July 1986--30 September 1986

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1986-09-30

    This report presents progress reported during the period, 7/1/86 - 9/30/86 for the Technical Support Services (TSS) for the Magnetic Fusion Reactor Design Studies Program. Tasks reported include: systems studies work plan, normalization of reactor design studies, interpretation of design study activities, research and development plan, conference support, and reports generated.

  12. Green oasis in an urban wasteland. Equipped with photovoltaic cells, the 'bioclimatic tree' offers cooling in hot weather; Oase in der Betonwueste. Ausgestattet mit Photovoltaikelementen, bildet der 'bioklimatische Baum' an heissen Tagen Raeume der Frische

    Energy Technology Data Exchange (ETDEWEB)

    Naundorf, Antje

    2010-02-15

    Scarce vegetation, dust and temperatures above 40 degC are making life uncomfortable in many parts of Madrid. Three years ago, a group of young architects constructed a ''solar tree'' that raised international interest. Their ''bioclimatic tree'' is a temporary steel structure with the function of a tree, which also generates electric power by means of integrated photovoltaic modules. (orig.)

  13. Design studies of a proton-pion hodoscope

    International Nuclear Information System (INIS)

    The considerations for the design of a detector assembly for detecting pions and protons resulting from the decay of Δ+ in the reaction 6Li(p,Δ++)6He at 400-500 MeV are discussed. The details of a computer program to calculate efficiencies for different hodoscope geometries and numerical results for some specific cases are given. A method for reconstructing the full kinematics of a reaction event from the position information of particle hits in the hodoscope is presented. (author)

  14. Design study of toroidal traction CVT for electric vehicles

    Science.gov (United States)

    Raynard, A. E.; Kraus, J.; Bell, D. D.

    1980-01-01

    The development, evaluation, and optimization of a preliminary design concept for a continuously variable transmission (CVT) to couple the high-speed output shaft of an energy storage flywheel to the drive train of an electric vehicle is discussed. An existing computer simulation program was modified and used to compare the performance of five CVT design configurations. Based on this analysis, a dual-cavity full-toroidal drive with regenerative gearing is selected for the CVT design configuration. Three areas are identified that will require some technological development: the ratio control system, the traction fluid properities, and evaluation of the traction contact performance. Finally, the suitability of the selected CVT design concept for alternate electric and hybrid vehicle applications and alternate vehicle sizes and maximum output torques is determined. In all cases the toroidal traction drive design concept is applicable to the vehicle system. The regenerative gearing could be eliminated in the electric powered vehicle because of the reduced ratio range requirements. In other cases the CVT with regenerative gearing would meet the design requirements after appropriate adjustments in size and reduction gearing ratio.

  15. Preliminary design studies on a nuclear seawater desalination system

    International Nuclear Information System (INIS)

    Seawater desalination is one of the most promising technologies to provide fresh water especially in the arid region. The most used technology in seawater desalination are thermal desalination (MSF and MED) and membrane desalination (RO). Some developments have been done in the area of coupling the desalination plant with a nuclear reactor to reduce the cost of energy required in thermal desalination. The coupling a nuclear reactor to a desalination plant can be done either by using the co-generation or by using dedicated heat from a nuclear system. The comparison of the co-generation nuclear reactor with desalination plant, dedicated nuclear heat system, and fossil fueled system will be discussed in this paper using economical assessment with IAEA DEEP software. A newly designed nuclear system dedicated for the seawater desalination will also be suggested by KAIST (Korea Advanced Inst. of Science and Technology) research team and described in detail within this paper. The suggested reactor system is using gas cooled type reactor and in this preliminary study the scope of design will be limited to comparison of two cases in different operating temperature ranges. (authors)

  16. Preliminary design studies on a nuclear seawater desalination system

    Energy Technology Data Exchange (ETDEWEB)

    Wibisono, A. F.; Jung, Y. H.; Choi, J.; Kim, H. S.; Lee, J. I.; Jeong, Y. H.; No, H. C. [KAIST, Dept. of Nuclear and Quantum Engineering, Korea Advanced Inst. of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, 305-701 (Korea, Republic of)

    2012-07-01

    Seawater desalination is one of the most promising technologies to provide fresh water especially in the arid region. The most used technology in seawater desalination are thermal desalination (MSF and MED) and membrane desalination (RO). Some developments have been done in the area of coupling the desalination plant with a nuclear reactor to reduce the cost of energy required in thermal desalination. The coupling a nuclear reactor to a desalination plant can be done either by using the co-generation or by using dedicated heat from a nuclear system. The comparison of the co-generation nuclear reactor with desalination plant, dedicated nuclear heat system, and fossil fueled system will be discussed in this paper using economical assessment with IAEA DEEP software. A newly designed nuclear system dedicated for the seawater desalination will also be suggested by KAIST (Korea Advanced Inst. of Science and Technology) research team and described in detail within this paper. The suggested reactor system is using gas cooled type reactor and in this preliminary study the scope of design will be limited to comparison of two cases in different operating temperature ranges. (authors)

  17. Linac Coherent Light Source (LCLS) design study report

    International Nuclear Information System (INIS)

    The Stanford Linear Accelerator Center (SLAC), in collaboration with Los Alamos National Laboratory, Lawrence Livermore National Laboratory, and the University of California at Los Angeles, is proposing to build a Free-Electron-Laser (FEL) R and D facility operating in the self-amplified spontaneous emission (SASE) mode in the wavelength range 1.5--15 angstrom. This FEL, called Linac Coherent Light Source (LCLS), utilizes the SLAC linac and produces sub-picosecond pulses of short wavelength x-rays with very high peak brightness and full transverse coherence. In this report, the Design Team has established performance parameters for all the major components of the LCLS and developed a layout of the entire system. Chapter 1 is the Executive Summary. Chapter 2 (Overview) provides a brief description of each of the major sections of the LCLS, from the rf photocathode gun, through the experimental stations and electron beam dump. Chapter 3 describes the scientific case for the LCLS. Chapter 4 provides a review of the principles of the FEL physics that the LCLS is based on, and Chapter 5 discusses the choice of the system's physical parameters. Chapters 6 through 10 describe in detail each major element of the system. Chapters 11 through 13 respectively cover undulator controls, mechanical alignment, and radiation issues

  18. Summary of the Preliminary Optical ICHMI Design Study: A Preliminary Engineering Design Study for a Standpipe Viewport

    Energy Technology Data Exchange (ETDEWEB)

    Anheier, Norman C.; Qiao, Hong (Amy); Berglin, Eric J.; Hatchell, Brian K.

    2013-12-26

    This summary report examines an in-vessel optical access concept intended to support standoff optical instrumentation, control and human-machine interface (ICHMI) systems for future advanced small modular reactor (AdvSMR) applications. Optical-based measurement and sensing systems for AdvSMR applications have several key benefits over traditional instrumentation and control systems used to monitor reactor process parameters, such as temperature, flow rate, pressure, and coolant chemistry (Anheier et al. 2013). Direct and continuous visualization of the in-vessel components can be maintained using external cameras. Many optical sensing techniques can be performed remotely using open optical beam path configurations. Not only are in-vessel cables eliminated by these configurations, but also sensitive optical monitoring components (e.g., electronics, lasers, detectors, and cameras) can be placed outside the reactor vessel in the instrument vault, containment building, or other locations where temperatures and radiation levels are much lower. However, the extreme AdvSMR environment present challenges for optical access designs and optical materials. Optical access is not provided in any commercial nuclear power plant or featured in any reactor design, although successful implementation of optical access has been demonstrated in test reactors (Arkani and Gharib 2009). This report outlines the key engineering considerations for an AdvSMR optical access concept. Strict American Society of Mechanical Engineers (ASME) construction codes must be followed for any U.S. nuclear facility component (ASME 2013); however, the scope of this study is to evaluate the preliminary engineering issues for this concept, rather than developing a nuclear-qualified design. In addition, this study does not consider accident design requirements. In-vessel optical access using a standpipe viewport concept serves as a test case to explore the engineering challenges and performance requirements

  19. Design study on dose evaluation method for employees at severe accident

    International Nuclear Information System (INIS)

    If a severe accident occurs in a pressurized water reactor plant, it is required to estimate dose values of operators engaged in emergency such as accident management, repair of failed parts. However, it might be difficult to measure radiation dose rate during the progress of an accident, because radiation monitors are not always installed in areas where the emergency activities are required. In this study, we analyzed the transport of radioactive materials in case of a severe accident, investigated a method to obtain radiation dose rate in the plant from estimated radioactive sources, made up a prototype analyzing system from this design study, and then evaluated its availability. As a result, we obtained the following: (1) A new dose evaluation method was established to predict the radiation dose rate at any point in the plant during a severe accident scenario. (2) This evaluation of total dose including access route and time for emergency activities is useful for estimating radiation dose limit for these employee actions. (3) The radiation dose rate map is effective for identifying high radiation areas and for choosing a route with lower radiation dose rate. (author)

  20. Design study on dose evaluation method for employees at severe accident

    International Nuclear Information System (INIS)

    When we assume a severe accident in a nuclear power plant, it is required for rescue activity in the plant, accident management, repair work of failed parts and evaluation of employees to obtain radiation dose rate distribution or map in the plant and estimated dose value for the above works. However it might be difficult to obtain them accurately along the progress of the accident, because radiation monitors are not always installed in the areas where the accident management is planned or the repair work is thought for safety-related equipments. In this work, we analyzed diffusion of radioactive materials in case of a severe accident in a pressurized water reactor plant, investigated a method to obtain radiation dose rate in the plant from estimated radioactive sources, made up a prototype analyzing system by modeling a specific part of components and buildings in the plant from this design study on dose evaluation method for employees at severe accident, and then evaluated its availability. As a result, we obtained the followings: (1) A new dose evaluation method was established to predict the radiation dose rate in any point in the plant during a severe accident scenario. (2) This evaluation of total dose including moving route and time for the accident management and the repair work is useful for estimating radiation dose limit for these actions of the employees. (3) The radiation dose rate map is effective for identifying high radiation areas and for choosing a route with lower radiation dose rate. (author)

  1. Open-cycle ocean thermal energy conversion (OTEC) research: progress summary and a design study

    Energy Technology Data Exchange (ETDEWEB)

    Penny, T.; Bharathan, D.; Althof, J.; Parsons, B.

    1984-08-01

    In 1980, the Westinghouse Corporation completed an extensive Claude open-cycle ocean thermal energy conversion (OC-OTEC) system design study. Since that time, the Solar Energy Research Institute (SERI) has produced concepts and data bases that have reduced the technical uncertainties associated with the evaporator and condenser design and performance, seawater sorption kinetics and gas removal systems, low pressure turbine design with novel materials, and low cost system containment and structural design. This paper describes an integrated system design case study using the improved data base and summarizes an assessment of the relative thermodynamic performance of advanced technologies, drawing parallels with Claude's early work in the 1930s. Projections from these latest advances imply that OC-OTEC systems can be cost effective in sizes less than 10 MW/sub e/. Analyzing the research needs for OC-OTEC systems reveals that an experimental facility integrating all essential components of a system is required. This paper describes a facility for conducting advanced research and verifying cycle feasibility in terms of performance, reliability, and cost. The thermodynamic performance of this integrated design is projected using an analytical system model incorporating the highly coupled component interactions.

  2. Preconceptual design studies and cost data of depleted uranium hexafluoride conversion plants

    International Nuclear Information System (INIS)

    One of the more important legacies left with the Department of Energy (DOE) after the privatization of the United States Enrichment Corporation is the large inventory of depleted uranium hexafluoride (DUF6). The DOE Office of Nuclear Energy, Science and Technology (NE) is responsible for the long-term management of some 700,000 metric tons of DUF6 stored at the sites of the two gaseous diffusion plants located at Paducah, Kentucky and Portsmouth, Ohio, and at the East Tennessee Technology Park in Oak Ridge, Tennessee. The DUF6 management program resides in NE's Office of Depleted Uranium Hexafluoride Management. The current DUF6 program has largely focused on the ongoing maintenance of the cylinders containing DUF6. However, the long-term management and eventual disposition of DUF6 is the subject of a Programmatic Environmental Impact Statement (PEIS) and Public Law 105-204. The first step for future use or disposition is to convert the material, which requires construction and long-term operation of one or more conversion plants. To help inform the DUF6 program's planning activities, it was necessary to perform design and cost studies of likely DUF6 conversion plants at the preconceptual level, beyond the PEIS considerations but not as detailed as required for conceptual designs of actual plants. This report contains the final results from such a preconceptual design study project. In this fast track, three month effort, Lawrence Livermore National Laboratory and Bechtel National Incorporated developed and evaluated seven different preconceptual design cases for a single plant. The preconceptual design, schedules, costs, and issues associated with specific DUF6 conversion approaches, operating periods, and ownership options were evaluated based on criteria established by DOE. The single-plant conversion options studied were similar to the dry-conversion process alternatives from the PEIS. For each of the seven cases considered, this report contains information on

  3. Preliminary Neutronics Design Studies for a Molten Salt Blanket LIFE Engine

    International Nuclear Information System (INIS)

    The Laser Inertial Confinement Fusion Fission Energy (LIFE) Program being developed at Lawrence Livermore National Laboratory (LLNL) aims to design a hybrid fission-fusion subcritical nuclear engine that uses a laser-driven Inertial Confinement Fusion (ICF) system to drive a subcritical fission blanket. This combined fusion-fission hybrid system could be used for generating electricity, material transmutation or incineration, or other applications. LIFE does not require enriched fuel since it is a sub-critical system and LIFE can sustain power operation beyond the burnup levels at which typical fission reactors need to be refueled. In light of these factors, numerous options have been suggested and are being investigated. Options being investigated include fueling LIFE engines with spent nuclear fuel to aid in disposal/incineration of commercial spent nuclear fuel or using depleted uranium or thorium fueled options to enhance proliferation resistance and utilize non-fissile materials (1]. LIFE engine blanket designs using a molten salt fuel system represent one area of investigation. Possible applications of a LIFE engine with a molten salt blanket include uses as a spent nuclear fuel burner, fissile fuel breeding platform, and providing a backup alternative to other LIFE engine blanket designs using TRISO fuel particles in case the TRISO particles are found to be unable to withstand the irradiation they will be subjected to. These molten salts consist of a mixture of LiF with UF4 or ThF4 or some combination thereof. Future systems could look at using PuF3 or PuF4 as well, though no work on such system with initial plutonium loadings has been performed for studies documented in this report. The purpose of this report is to document preliminary neutronics design studies performed to support the development of a molten salt blanket LIFE engine option, as part of the LIFE Program being performed at Lawrence Livermore National laboratory. Preliminary design studies

  4. Research-practice interactions as reported in recent design studies: Still promising, still hazy

    OpenAIRE

    Ormel, Bart; Pareja Roblin, Natalie; McKenney, Susan

    2012-01-01

    Ormel, B., Pareja, N., & McKenney, S. (2011, 8-10 June). Research-practice interactions as reported in recent design studies: Still promising, still hazy. Paper presentation at the ORD annual meeting, Maastricht.

  5. Implementing Bioclimatic Design in Sustainable Architectural Practice

    OpenAIRE

    Bondars, Edgars

    2013-01-01

    Today one of the topical issues in Latvia relates to the compliance of the architectural practice with the modern concept of sustainable development. Although the beginning of the first decade of the 21st century introduced positive ideas promoting energy efficient architecture in Latvia, the worldwide experience has shownthat despite the importance of environmental ideas in designing,their introduction and implementation in practice often encounterproblems. This article addresses a number of...

  6. Bioclimatic underground architecture: Development and principles

    OpenAIRE

    Stojić Jasmina; Stanković Danica

    2009-01-01

    The principal idea of paper lies in analyzing contemporary architectural challenges, concerning climate changes, global warming, renewable energy deficiency and population growth. The relevant examples and principles of sustainable and selfsustainable architecture development throughout history are presented. Underground structures as passive solar systems, vegetation used as insulation, ventilation and isolation are given as one of possible solutions for this global phenomenon. By studying t...

  7. Bioclimatic Analysis of Vernacular Iranian Architecture

    OpenAIRE

    Pourvahidi, Parastoo

    2010-01-01

    Many factors are involved in the evolution of architectural styles around the world. In Iran, environmental and natural phenomena play a very important role in the regions inter-related cultural, economic and social infra-structures. Different settlements in Iran have diverse climate and cultures. Subsequently, for controlling the climate they created different design solutions. Climate has major effects on the buildings and the most critical is to understand how to control the...

  8. Implementing Bioclimatic Design in Sustainable Architectural Practice

    OpenAIRE

    Bondars, E

    2013-01-01

    Today one of the topical issues in Latvia relates to the compliance of the architectural practice with the modern concept of sustainable development. Although the beginning of the first decade of the 21st century introduced positive ideas promoting energy efficient architecture in Latvia, the worldwide experience has shown that despite the importance of environmental ideas in designing, their introduction and implementation in practice often encounter problems. This article addresses a ...

  9. Bioclimatic architecture and Traditional Houses in Diyarbakir

    OpenAIRE

    Akin, Can Tuncay

    2006-01-01

    Today although a contemporary house or apartment is built with new materials according to technology and regulations to provide a satisfactory microclimate within the building, it is difficult to say they are successful comparing with a house that is constructed with traditional methods and materials even built by a non-architect. In this paper microclimatic elements of traditional Diyarbakýr houses are determined systemically comparing with the typology, design features that makes a house su...

  10. Bioclimatic underground architecture: Development and principles

    Directory of Open Access Journals (Sweden)

    Stojić Jasmina

    2009-01-01

    Full Text Available The principal idea of paper lies in analyzing contemporary architectural challenges, concerning climate changes, global warming, renewable energy deficiency and population growth. The relevant examples and principles of sustainable and selfsustainable architecture development throughout history are presented. Underground structures as passive solar systems, vegetation used as insulation, ventilation and isolation are given as one of possible solutions for this global phenomenon. By studying the model of Nature, certain solutions imitating systems and laws of flora and fauna are given that will insure the necessary savings of non-renewable energy during the building construction and their later energy consumption.

  11. A reduced-order modeling for efficient design study of artificial valve in enlarged ventricular outflow tracts.

    Science.gov (United States)

    Caiazzo, A; Guibert, R; Vignon-Clementel, I E

    2016-09-01

    A computational approach is proposed for efficient design study of a reducer stent to be percutaneously implanted in enlarged right ventricular outflow tracts (RVOT). The need for such a device is driven by the absence of bovine or artificial valves which could be implanted in these RVOT to replace the absent or incompetent native valve, as is often the case over time after Tetralogy of Fallot repair. Hemodynamics are simulated in the stented RVOT via a reduce order model based on proper orthogonal decomposition, while the artificial valve is modeled as a thin resistive surface. The reduced order model is obtained from the numerical solution on a reference device configuration, then varying the geometrical parameters (diameter) for design purposes. To validate the approach, forces exerted on the valve and on the reducer are monitored, varying with geometrical parameters, and compared with the results of full CFD simulations. Such an approach could also be useful for uncertainty quantification. PMID:26738807

  12. Inertial Fusion Energy reactor design studies: Prometheus-L, Prometheus-H

    International Nuclear Information System (INIS)

    This report contains a review of design studies for inertial confinement reactors. The first of three volumes briefly discusses the following: Introduction; Key objectives, requirements, and assumptions; Systems modeling and trade studies; Prometheus-L reactor plant design overview; Prometheus-H reactor plant design overview; Key technical issues and R ampersand D requirements; Comparison of IFE designs; and study conclusions

  13. Inertial Fusion Energy reactor design studies: Prometheus-L, Prometheus-H. Volume 2, Final report

    Energy Technology Data Exchange (ETDEWEB)

    Waganer, L.M.; Driemeyer, D.E.; Lee, V.D.

    1992-03-01

    This report contains a review of design studies for Inertial Confinement reactor. This second of three volumes discussions is some detail the following: Objectives, requirements, and assumptions; rationale for design option selection; key technical issues and R&D requirements; and conceptual design selection and description.

  14. Inertial Fusion Energy reactor design studies: Prometheus-L, Prometheus-H

    International Nuclear Information System (INIS)

    This report contains a review of design studies for Inertial Confinement reactor. This second of three volumes discussions is some detail the following: Objectives, requirements, and assumptions; rationale for design option selection; key technical issues and R ampersand D requirements; and conceptual design selection and description

  15. Inertial Fusion Energy reactor design studies: Prometheus-L, Prometheus-H. Volume 1, Final report

    Energy Technology Data Exchange (ETDEWEB)

    Waganer, L.M.; Driemeyer, D.E.; Lee, V.D.

    1992-03-01

    This report contains a review of design studies for inertial confinement reactors. The first of three volumes briefly discusses the following: Introduction; Key objectives, requirements, and assumptions; Systems modeling and trade studies; Prometheus-L reactor plant design overview; Prometheus-H reactor plant design overview; Key technical issues and R&D requirements; Comparison of IFE designs; and study conclusions.

  16. A conceptual design study on various types of HLMC fast reactor plant

    International Nuclear Information System (INIS)

    To seek for a promising concept of a heavy liquid metal coolant (HLMC) fast reactor plant, Japan Nuclear Cycle Development Institute (JNC) and the electric utilities conducted conceptual design study on various types of plant concepts and compared these concepts based on technical feasibility and economical perspective. Finally, Pb-Bi cooled medium tank type reactor was selected as a most promising concept. (author)

  17. A Design Study of a Multimedia Instructional Grammar Program with Embedded Tracking

    Science.gov (United States)

    Koehler, Natalya A.; Thompson, Ann D.; Phye, Gary D.

    2011-01-01

    This is a design study meant to demonstrate the feasibility of integrating three rather different theoretical perspectives for future efforts in multimedia instructional design. A multimedia instructional grammar program contextualized within the teaching of English as a Second Language (ESL) was developed and evaluated. The program design was…

  18. Inertial Fusion Energy Reactor Design Studies: Prometheus-L, Prometheus-H

    International Nuclear Information System (INIS)

    This report contains a review of design studies for inertial confinement reactor. This third of three three volumes discusses the following topics: Driver system definition; vacuum system; fuel processing systems (FPS); cavity design and analysis; heat transport and thermal energy conversion; balance of plant systems; remote maintenance systems; safety and environment; economics; and comparison of IFE designs

  19. Conceptual design studies on various types of HLMC fast reactor plants

    International Nuclear Information System (INIS)

    To seek for a promising concept of a heavy liquid metal coolant (HLMC) fast reactor plant, Japan Nuclear Cycle Development Institute (JNC) and the electric utilities conducted conceptual design studies on various types of plant concepts and compared these concepts based on technical feasibility and economical perspective. Finally, Pb-Bi cooled medium tank type reactor was selected as the most promising concept. (author)

  20. Conceptual design studies of 1985 commercial VTOL transports that utilized rotors. Volume 2

    Energy Technology Data Exchange (ETDEWEB)

    Magee, J.P.; Clark, R.; Alexander, H.

    1974-11-01

    Results of conceptual design studies of tilt rotor and tandem helicopter aircraft for a 200 nautical mile commercial short haul transport mission are presented. The trade study data used in selecting the design point aircraft and technology details necessary to support the design conclusions are included.

  1. Design study of superconducting toroidal field magnet for tokamak fusion power reactor

    International Nuclear Information System (INIS)

    Design study of the superconducting toroidal field magnet for a 2000 MW sub(t) tokamak fusion power reactor has been carried out. Performed here were conductor design, magnetic field calculation, design of coil support, stress analysis and design of refrigeration system. The maximum toroidal field at the coil is 12T, providing 6T at the plasma center. Nb3Sn superconductors are employed in the higher field zone. The operation current is 34.72 kA, and the conductors are fully stabilized. The heat load in the magnet is 21.1 kW, and the required liquefaction rate is 36,000 l/h. Many technological problems were revealed by the design study. (auth.)

  2. LMFBR conceptual design study: an overview of environmental and safety concerns

    International Nuclear Information System (INIS)

    The US Department of Energy (DOE) initiated the Liquid Metal Fast Breeder (LMFBR) Conceptual Design Study (CDS) with the objective of maintaining a viable breeder option. The project is scheduled to be completed in FY-1981 but decisions regarding plant construction will be delayed until at least 1985. This report provides a review of the potential environmental and safety engineering concerns for the CDS and recommends specific action for the Environmental and Safety Engineering Division of DOE

  3. Preliminary magnetic design study of wavelength shifter and Wiggler for Indus-2

    International Nuclear Information System (INIS)

    At present the synchrotron radiation of critical energy of about 6.235 keV from the bending magnets of Indus-2 is only used by the users. To meet the demand of use of radiations with different characteristics which are not available from the bending magnets, it is planned to install Insertion Devices (IDs) in the five long straight sections of Indus-2. This paper presents the preliminary magnetic design study of two IDs -a superconducting wavelength shifter (WLS) and a multipole wiggler (MPW) for Indus-2. The magnetic design study of a fixed radiation source point type WLS of 5 poles with on axis peak magnetic field of 5 tesla has been carried out. In a fixed radiation source point type, the transverse position of the electron beam remains fixed in the centre of WLS axis at any magnetic field levels which is not possible for a device with 3 poles. The critical photon energy available from the wavelength shifter is about 20.8 keV. The magnetic design of a multipole wiggler with on axis peak magnetic field of 2.5 tesla (selected on the basis of users requirements of photon flux in the usable energy range of 5-20 keV and total radiation heat load) has been carried out. The design study with even and odd number of full strength poles along with end poles have been done. RADIA software has been used for the design optimization. The magnetic design study of both the superconducting devices along with the estimation of photon flux, brilliances and radiation heat loads is discussed in this paper. (author)

  4. Conceptual design studies of 1985 commercial VTOL transports that utilized rotors. Volume 1

    Energy Technology Data Exchange (ETDEWEB)

    Magee, J.P.; Clark, R.; Alexander, H.R.

    1974-11-01

    Results of conceptual design studies of commercial rotary wing transport aircraft for the 1985 time period are presented. Two aircraft configurations, a tandem helicopter and a tilt rotor, were designed for a 200 nautical mile short haul mission with an upper limit of 100 passengers. In addition to the baseline aircraft two further designs of each configuration are included to assess the impact of external noise design criteria on the aircraft size, weight, and cost.

  5. Design study and evaluation of advanced fuel fabrication systems for FBR fuel cycle

    International Nuclear Information System (INIS)

    The conceptual design study for advanced FBR fuel fabrication system has been performed for the purpose that the feature of small-scale fabrication system in the transition stage from LWR to FBR fuel cycle. On the small-scale of 50 ton heavy metal per year fabrication system, dry type fabrication systems have superior cost performance than the wet type, although waste amount is larger. (authors)

  6. LAVENDER: A steady-state core analysis code for design studies of accelerator driven subcritical reactors

    Energy Technology Data Exchange (ETDEWEB)

    Zhou, Shengcheng; Wu, Hongchun; Cao, Liangzhi; Zheng, Youqi, E-mail: yqzheng@mail.xjtu.edu.cn; Huang, Kai; He, Mingtao; Li, Xunzhao

    2014-10-15

    Highlights: • A new code system for design studies of accelerator driven subcritical reactors (ADSRs) is developed. • S{sub N} transport solver in triangular-z meshes, fine deletion analysis and multi-channel thermal-hydraulics analysis are coupled in the code. • Numerical results indicate that the code is reliable and efficient for design studies of ADSRs. - Abstract: Accelerator driven subcritical reactors (ADSRs) have been proposed and widely investigated for the transmutation of transuranics (TRUs). ADSRs have several special characteristics, such as the subcritical core driven by spallation neutrons, anisotropic neutron flux distribution and complex geometry etc. These bring up requirements for development or extension of analysis codes to perform design studies. A code system named LAVENDER has been developed in this paper. It couples the modules for spallation target simulation and subcritical core analysis. The neutron transport-depletion calculation scheme is used based on the homogenized cross section from assembly calculations. A three-dimensional S{sub N} nodal transport code based on triangular-z meshes is employed and a multi-channel thermal-hydraulics analysis model is integrated. In the depletion calculation, the evolution of isotopic composition in the core is evaluated using the transmutation trajectory analysis algorithm (TTA) and fine depletion chains. The new code is verified by several benchmarks and code-to-code comparisons. Numerical results indicate that LAVENDER is reliable and efficient to be applied for the steady-state analysis and reactor core design of ADSRs.

  7. Design studies of mobile applications with SOFC-heat engine modules

    Science.gov (United States)

    Winkler, Wolfgang; Lorenz, Hagen

    The recent development of thin tubular solid oxide fuel cells (SOFCs), microturbines and Stirling engines has inspired design studies of the integration of a SOFC-heat engine (HE) system within a car. The total power system consists of a SOFC-HE power generation unit, a power storage (battery) system, a power management system and electric motors at the wheels. The sizes of the HE and the SOFC stack are to be matched by the start-up requirements. The use of micro tubes allows a very high power density of the stack. The thermodynamic calculation of the cycle gives the actual design values for the study and indicates further steps for system optimisation. The first SOFC-GT layout lead to an electric efficiency of 45% for the cycle used as a base for a design study [The Design of Stationary and Mobile SOFC-GT Systems, UECT, 2001]. The design study shows that the space available in a mid-class car allows the integration of such a system including space reserves. A further improvement of the system might allow an electric efficiency of more than 55%. The integration of a Stirling engine instead of the microturbine is a second possibility and the object of an ongoing study. This was motivated by interesting results from the development of solar powered Stirling engines. Generally, the analyses show that the optimal match of the SOFC and the HE will be a key issue for any engineering solution.

  8. Design study of 1.8 K 200 W helium refrigeration system

    International Nuclear Information System (INIS)

    The superconducting RF cavities of the superconducting proton linac will be cooled by superfluid helium below 2.0 K. The cooling test of the superconducting RF cavities will be required about 200 W of cooling power at 1.8 K. Refrigeration using superfluid helium is required a helium refrigeration system cooling down to 1.8 K. A cold compressor is a key component for the system. IHI carried out 1.8 K 200 W helium refrigeration system design for cooling test of the superconducting RF cavities. The preliminary design study of the 1.8 K 200 W helium refrigeration system is presented. (author)

  9. Preliminary Systems Design Study assessment report. Volume 5, Land disposal compliance and hydrogen generation restricted concepts

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1991-11-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex`s Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept.

  10. Large scale breeder reactor plant prototype mechanical pump conceptual design study

    Energy Technology Data Exchange (ETDEWEB)

    1976-07-01

    This final report is a complete conceptual design study of a mechanical pump for a large scale breeder reactor plant. The pumps are located in the cold leg side of the loops. This makes the net positive suction head available - NPSHA - low, and is, in fact, a major influencing factor in the design. Where possible, experience gained from the Clinch River Project and the FFTF is used in this study. Experience gained in the design, manufacturer, and testing of pumps in general and sodium pumps in particular is reflected in this report. The report includes estimated cost and time schedule for design, manufacture, and testing. It also includes a recommendation for development needs.

  11. Conceptual design study of quasi-steady state fusion experimental reactor (FEQ-Q), part 1

    International Nuclear Information System (INIS)

    Since 1980 the design study has been conducted at JAERI for the Fusion Experimental Reactor (FER) which has been proposed to be the next machine to JT-60 in the Japanese long term program of fusion reactor development. Starting from 1984 JER design is being reviewed and redesigned. This report is a part of the interim report which describes the results obtained in the review and redesign activities in FY 1984. The results of the following design items are included; core plasma, reactor structure, reactor core components, magnets. (author)

  12. Design study of technology requirements for high performance single-propeller-driven business airplanes

    Science.gov (United States)

    Kohlman, D. L.; Hammer, J.

    1985-01-01

    Developments in aerodyamic, structural and propulsion technologies which influence the potential for significant improvements in performance and fuel efficiency of general aviation business airplanes are discussed. The advancements include such technolgies as natural laminar flow, composite materials, and advanced intermittent combustion engines. The design goal for this parameter design study is a range of 1300 nm at 300 knots true airspeed with a payload of 1200lbs at 35,000 ft cruise altitude. The individual and synergistic effects of various advanced technologies on the optimization of this class of high performance, single engine, propeller driven business airplanes are identified.

  13. Design study of the FER (fusion experimental reactor) superconducting magnet system

    International Nuclear Information System (INIS)

    The preliminary design study of the superconducting magnet system for the Fusion Experimental Reactor (FER) [1] is in progress at the Japan Atomic Energy Research Institute (JAERI). This paper describes the technical specifications and the design concepts of the 12-T toroidal field (TF) coil system, the 12-T central solenoid (CS) coil system, and the 7-T equilibrium field (EF) coil system, all of which satisfy the technical requirements of the superconducting magnet system of the FER. 8 refs., 6 figs., 4 tabs

  14. Design study of 10 kW superconducting generator for wind turbine applications

    OpenAIRE

    Abrahamsen, Asger Bech; Mijatovic, Nenad; Seiler, Eugen; Sørensen, Mads Peter; Koch, Martin; Nørgård, Per Bromand; Pedersen, Niels Falsig; Træholt, Chresten; Andersen, Niels Hessel; Østergaard, Jacob

    2009-01-01

    We have performed a design study of a 10 kW superconducting slow rotating generator suitable for demonstration in a small scale wind turbine, where the drive train only consists of the turbine blades connected directly to the generator. The flux density in the superconducting rotor is chosen as B = 1 Tesla to be similar to the performance of permanent magnets and to represent a layout, which can be scaled up in future off-shore wind turbines. The proposed generator is a 8 pole synchronous mac...

  15. Design study of 10 kW superconducting generator for wind turbine applications

    DEFF Research Database (Denmark)

    Abrahamsen, Asger Bech; Mijatovic, Nenad; Seiler, Eugen;

    2009-01-01

    = 1 Tesla to be similar to the performance of permanent magnets and to represent a layout, which can be scaled up in future off-shore wind turbines. The proposed generator is a 8 pole synchronous machine based on race-track coils of high temperature superconducting tapes and an air cored copper stator......We have performed a design study of a 10 kW superconducting slow rotating generator suitable for demonstration in a small scale wind turbine, where the drive train only consists of the turbine blades connected directly to the generator. The flux density in the superconducting rotor is chosen as B...

  16. Design study for a high-current, steady-state autoresonant accelerator. Final report, July 14-November 14, 1979

    International Nuclear Information System (INIS)

    During the past year and a half, both theoretical and engineering investigations have been carried forward in a research program to assess the feasibility, and provide conceptual designs and engineering design studies for high current, steady state Auto-Resonant Accelerators. The behavior of each of the various components of an Auto-Resonant Accelerator has been carefully examined for the case of moderately relativistic electron energy and high electron current which will be appropriate for steady state operation. In general, a very considerable amount of progress has been achieved on the front-end components of the accelerator, with design options narrowed significantly and preliminary design parameters even determined for the power supplies, the electron beam source, the radiation shielding, the convergent Pierce gun diode, and the electron cyclotron wave exciter. For the downstream accelerator components consisting of the gas cell and electrode structures which are used to generate and load the ions into the cyclotron wave and to eliminate secondary electrons, conceptual designs have been realized; however, some further work remains to be done before an optimized engineering design of these components can be constructed for a first experimental test of a steady state Auto-Resonant Accelerator

  17. Planning Considerations for a Mars Sample Receiving Facility: Summary and Interpretation of Three Design Studies

    Science.gov (United States)

    Beaty, David W.; Allen, Carlton C.; Bass, Deborah S.; Buxbaum, Karen L.; Campbell, James K.; Lindstrom, David J.; Miller, Sylvia L.; Papanastassiou, Dimitri A.

    2009-10-01

    It has been widely understood for many years that an essential component of a Mars Sample Return mission is a Sample Receiving Facility (SRF). The purpose of such a facility would be to take delivery of the flight hardware that lands on Earth, open the spacecraft and extract the sample container and samples, and conduct an agreed-upon test protocol, while ensuring strict containment and contamination control of the samples while in the SRF. Any samples that are found to be non-hazardous (or are rendered non-hazardous by sterilization) would then be transferred to long-term curation. Although the general concept of an SRF is relatively straightforward, there has been considerable discussion about implementation planning. The Mars Exploration Program carried out an analysis of the attributes of an SRF to establish its scope, including minimum size and functionality, budgetary requirements (capital cost, operating costs, cost profile), and development schedule. The approach was to arrange for three independent design studies, each led by an architectural design firm, and compare the results. While there were many design elements in common identified by each study team, there were significant differences in the way human operators were to interact with the systems. In aggregate, the design studies provided insight into the attributes of a future SRF and the complex factors to consider for future programmatic planning.

  18. Design study of fuel circulating system using Pd alloy membrane isotope separation method

    International Nuclear Information System (INIS)

    It is expected that the method of permeating through Pd-alloy membrances is effective for isotope separation and the refining of fuel gas. In this paper, the design study of the Fuel Circulating System (FCS) using Pb-alloy membranes is described. The study is mainly focused on the main vacuum, fuel gas refining, isotope separating, and tritium containment systems. In the fuel gas refining system, impurities are effectively removed by using Pd-alloy membranes. For the isotope separation system, the diffusion method through Pd-alloy membranes was adopted. From the standpoint of the safety and economy, a three-stage tritium containment system was adopted to control tritium release to the environment as low as possible. The principal conclusion drawn from the design study was as follows. In the FCS, while cryogenic distillation method appears to be practicable, Pd-alloy membrane method is attractive for isotope separation and the refining of fuel gas. For a large amount of tritium inventory, handling and control technologies should be completed by the experimental evaluation and development of the components and materials used for the FCS. A three-stage containment system was adopted to control tritium release to environment as low as possible. Consideration to prevent tritium escape will be necessary for fuel gas refiners and isotope separators. (Kato, T.)

  19. Design studies for the Mead-Phoenix 500 kV AC transmission project

    Energy Technology Data Exchange (ETDEWEB)

    Thallam, R.S.; Lundquist, T.G.; Gerlach, D.W. [Salt River Project, Phoenix, AZ (United States); Atmuri, S.R. [Teshmont Consultants Inc., Winnipeg, Manitoba (Canada); Selin, D.A. [Arizona Public Service Co., Phoenix, AZ (United States)

    1995-10-01

    The Mead-Phoenix 500 kV ac line is 243 miles long and runs parallel to the existing Mead-Liberty 345 kV line. This line is planned for 70% series and 70% shunt compensation; it also incorporates the first application of a 50 kV phase shifting transformer that enables a 1,300 MW transmission capacity. This paper presents the design studies that were undertaken in arriving at the equipment ratings and insulation levels that lead to the equipment specifications. The shunt reactor switching requirements utilizing MOV across the breaker, line switching with line connected arresters and the breaker transient recovery voltage are also dealt with in the paper.

  20. Design study of plant system for the fusion experimental reactor (FER)

    International Nuclear Information System (INIS)

    This report describes design study results of the FER plant system. The purpose of this study is to have an image of the FER plant system as a whole by designing major auxiliary systems, reactor building and maintenance and radwaste desposal systems. The major auxiliary systems include tritium, cooling, evacuation and fueling systems. For these each systems, flowdiagrams are studied and designs of devices and pipings are conducted. In the reactor building design, layout of the above auxiliary systems in the building is studied with careful zoning concept by the radiation level. Structural integrity of the reactor building is also studied including seismic analysis. In the design of the maintenance and radwaste system flowdiagram of failed reactor components is developed and transfer vehicles and buildings are designed. Finally assuming JAERI Naka site as the reactor site layout of the whole FER plant system is developed. (author)

  1. HYFIRE II: fusion/high-temperature electrolysis conceptual-design study. Annual report

    International Nuclear Information System (INIS)

    As in the previous HYFIRE design study, the current study focuses on coupling a Tokamak fusion reactor with a high-temperature blanket to a High-Temperature Electrolyzer (HTE) process to produce hydrogen and oxygen. Scaling of the STARFIRE reactor to allow a blanket power to 6000 MW(th) is also assumed. The primary difference between the two studies is the maximum inlet steam temperature to the electrolyzer. This temperature is decreased from approx. 13000 to approx. 11500C, which is closer to the maximum projected temperature of the Westinghouse fuel cell design. The process flow conditions change but the basic design philosophy and approaches to process design remain the same as before. Westinghouse assisted in the study in the areas of systems design integration, plasma engineering, balance-of-plant design, and electrolyzer technology

  2. Design study on plasma-loaded cyclotron resonance maser utilizing TPD-II machine in NIFS

    International Nuclear Information System (INIS)

    Design study of an experiment for plasma-loaded cyclotron resonance maser (CRM) utilizing TPD-II Machine at NIFS, Japan is described. We derive and analyze numerically an exact linear dispersion relation of radiation from a large orbit electron beam, and found that the relation includes two principles of cyclotron emission with oscillation frequencies above and below the relativistic electron cyclotron frequency. The former is conventional CRM instability, and the latter is named Cherenkov instability in the azimuthal direction (CIAD). In this study, the existence of CIAD is tried to verify experimentally. For plasma density n > 1.5x1011 cm-3, the CRM instability may be suppressed and the CIAD may take turn. (author)

  3. The SNL100-01 blade : carbon design studies for the Sandia 100-meter blade.

    Energy Technology Data Exchange (ETDEWEB)

    Griffith, Daniel Todd

    2013-02-01

    A series of design studies to investigate the effect of carbon on blade weight and performance for large blades was performed using the Sandia 100-meter All-glass Baseline Blade design as a starting point. This document provides a description of the final carbon blade design, which is termed as SNL100-01. This report includes a summary of the design modifications applied to the baseline all-glass 100-meter design and a description of the NuMAD model files that are made publicly available. This document is intended primarily to be a companion document to the distribution of the NuMAD blade model files for SNL100-01.

  4. Design study of fuel circulating system using Pd-alloy membrane isotope separation method

    International Nuclear Information System (INIS)

    Design study on the fuel circulating system (FCS) for a tokamak experimental fusion reactor (JXFR) has been carried out to establish the system concept, to plan the development program, and to evaluate the feasibility of diffusion system. The FCS consists of main vacuum system, fuel gas refiners, isotope separators, fuel feeders, and auxiliary systems. In the system design, Pd-alloy membrane permeation method is adopted for fuel refining and isotope separating. All impurities are effectively removed and hydrogen isotopes are sufficiently separated by Pd-alloy membrane. The isotope separation system consists of 1st (47 separators) and 2nd (46 separators) cascades for removing protium and separating deuterium, respectively. In the FCS, while cryogenic distillation method appears to be practicable, Pd-alloy membrane diffusion method is attractive for isotope separation and refining of fuel gas. The choice will have to be based on reliability, economic, and safety analyses

  5. Design study of fuel circulating system for tokamak experimental fusion reactor

    International Nuclear Information System (INIS)

    Design study of the fuel circulating system (FCS) for a tokamak experimental fusion reactor has been carried out. The FCS consists of main vacuum system, fuel gas refiners, isotope separators, neutral beam injector and fuel feed system. Cryopump vacuum system, fuel gas refiners of Pd-alloy membrane, and isotope separators of Pd-alloy membrane were mainly studied. Design parameters are: 16 cryosorption pumps, each-cryosorption-pump rate 3.3 x 105 l/sec, 12 fuel gas refiners, each-refiner effective surface area 820 cm2, 47 isotope separators (in 1st cascade) and 46 (in 2nd), each-separator effective surface area -- 2,600 cm2 (in 1st cascade) and -- 22,000 cm2 (in 2nd). (auth.)

  6. Some up-to-date additions to MAGIC for PEP design studies

    International Nuclear Information System (INIS)

    In the past year, the computer code MAGIC has been further developed to give more information needed for PEP design studies. These additions are: Orbit distortions due to discrete rf system distributions and synchrotron radiation loss; Injection system parameter values for different septum locations; Effect of multipole field errors upon betatron frequency; Beam parameter variations due to wiggler magnet insertions; and Magnet misalignment error coefficients. Recently, it was suggested to the authors that these computations should be made accessible to other members of the group in order to facilitate future studies. The input instructions and the output values for these calculations are described in this note. Some of the up-to-date results are included in the appendices to illustrate the possible applications of these computations. The user is assumed to be familiar with the data format of MAGIC. 9 refs.,

  7. A design study for a medium-scale field demonstration of the viscous barrier technology

    International Nuclear Information System (INIS)

    This report is the design study for a medium-scale field demonstration of Lawrence Berkeley National Laboratory's new subsurface containment technology for waste isolation using a new generation of barrier liquids. The test site is located in central California in a quarry owned by the Los Banos Gravel Company in Los Banos, California, in heterogeneous unsaturated deposits of sand, silt, and -ravel typical of many of the and DOE cleanup sites and particularly analogous to the Hanford site. The coals of the field demonstration are (a) to demonstrate the ability to create a continuous subsurface barrier isolating a medium-scale volume (30 ft long by 30 ft wide by 20 ft deep, i.e. 1/10th to 1/8th the size of a buried tank at the Hanford Reservation) in the subsurface, and (b) to demonstrate the continuity, performance, and integrity of the barrier

  8. Design studies of interaction processes between melt reactor core material composition, coolant and construction material

    International Nuclear Information System (INIS)

    This effort presents results of the design studies performed for correct conducting of out-of-pile experiments at the National Nuclear Center of the Republic of Kazakhstan facilities to study interaction processes between the melt fuel composition and core materials, which might take place during accidents at the nuclear power plants. The design methods are considered to determine electromagnetic parameters of the facility melting unit - an induction melting furnace, to determine temperature fields in furnace construction component materials during the experiment process and at the moment of melt discharge. The methods are presented to calculate temperature fields and thermal flows in experimental device modelling a reactor vessel bottom when it contacts with the melt fuel composition. The results of thermal electric and hydraulic calculations are presented validating the experimental device operability designed to study the interaction processes between the melt fuel composition and reactor vessel bottom in simulating a residual energy release in the melt by direct current transmitting

  9. Preliminary systems design study assessment report. Volume 4, Leach resistant/high integrity structure concepts

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1991-10-01

    The System Design Study (SDS), part of the Waste Technology Development Department of the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex`s Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. The SDS results are published in eight volumes. Volume I contains an executive summary. The SDS summary and analysis of results are presented in Volume II. Volumes III through VII contain descriptions of twelve system and four subsystem concepts. Volume VIII contains the appendixes.

  10. Design study of a plasma-loaded CRM using TPD-II machine

    International Nuclear Information System (INIS)

    Design study of an experiment for plasma-loaded cyclotron resonance maser (CRM) utilizing TPD-II Machine at NIFS, Japan is described in some detail. The principle of gyrotrons has been believed the CRM instability. However, all the existing linear theories of CRM instability include unphysical modes unstable at infinite values of axial wavenumber that can never be observed experimentally. To overcome the difficulty, we derive and analyze numerically an exact linear dispersion relation of a large orbit electron beam for CRM, and removed the unphysical modes. However, the relation is found to include two principles of cyclotron emission with oscillation frequencies above and below the branch of fast electron cyclotron wave. The former is CRM instability, and the latter is named Chrenkov instability in the azimuthal direction (CIAD). It is noted that the CIAD we found remains only a proposal of a new mechanism for cyclotron emission until the physical existence is verified experimentally. To verify the CIAD, the design study of a plasma-loaded CRM has been carried out. The apparatus consists of two portions installed in the TPD-II: A pair of helical wiggler windings to create a mono-energetic beam with 15 keV and pitch factor Vθ/Vz≥1, and microwave circuits including a cylindrical TE011 mode cavity with resonant frequency 3.45 GHz. For high plasma density n≥1.5x1011 cm-3 from TPD-II, the CRM instability may be suppressed and the CIAD will take turn. The present experimental study contributes to a deeper understanding and a widened future prospect in gyrotron physics. (author)

  11. Proton-Proton Colliding-Beam Storage Rings for the National Accelerator Laboratory: Design Study 1968

    Energy Technology Data Exchange (ETDEWEB)

    None

    1968-01-01

    This report describes the design studies on colliding-beam storage rings carried out at the National Accelerator Laboratory in the summer and fall of 1968. These studies were under the direction of Lee C. Teng. M. Stanley Livingston also played an important part in catalyzing the studies. Dr. Teng's preface, immediately following, gives a chronology of the study and lists the participants in various aspects. The purpose of the study has been to develop realistic cost estimates upon which future plans can be based. It is to be emphasized that this is not a proposal for construction. The major results of the study are that 100-100 BeV colliding beam rings can be built for approximately 75 million dollars (in 1968 dollars), utilizing conventional steel and copper magnets. This estimate includes no equipment for physics experiments. A system utilizing steel magnets that are excited by superconducting coils is estimated to cost somewhat less. A similar system using cryogenic aluminum coils appears to be slightly more costly at this time than the conventional magnet. A number of storage rings built of superconducting magnets have also been analyzed on the premise (undemonstrated as yet) that they would in fact operate satisfactorily. Such magnets designed using present technology for relatively low fields, about 40 kG, appear to be competitive with conventional magnets. Evidently a total colliding-beam facility, including experimental equipment, could be built at NAL for a sum of the order of 100 million 1968 dollars. It should be added that the terms of reference of these design studies gave emphasis to a straightforward, conservative design. Further design work and advances in technology might very well result in a significant reduction in cost or, at the same cost, provide for a greater scope.

  12. Conceptual design study FY 1981: synfuels from fusion - using the tandem mirror reactor and a thermochemical cycle to produce hydrogen

    International Nuclear Information System (INIS)

    This report represents the second year's effort of a scoping and conceptual design study being conducted for the express purpose of evaluating the engineering potential of producing hydrogen by thermochemical cycles using a tandem mirror fusion driver. The hydrogen thus produced may then be used as a feedstock to produce fuels such as methane, methanol, or gasoline. The main objective of this second year's study has been to obtain some approximate cost figures for hydrogen production through a conceptual design study

  13. Core Design Study of Ultra-Long Cycle Fast Reactor Concept

    International Nuclear Information System (INIS)

    New designs of ultra-long cycle fast reactor with power ratings of 1000 MWe and 100 MWe (UCFR-1000 and UCFR-100) have been developed based on breed-and burn strategy. Low enriched uranium (~12.3 %) in the core bottom region plays a role of igniter. Fertile materials in the core upper region act as a blanket for breeding and the active core moves upward as the core burns. Natural uranium and pressurized light water reactor (PWR) spent fuel were used as the blanket materials in order to improve fuel utilization and mitigate the nuclear proliferation issues especially in Korea where the reprocessing of spent fuels is not allowed. HT-9 and sodium were used as structure and coolant materials, respectively, and metallic form was adopted for fuel. The design of UCFR-100 has advantages in terms of lower local power peaking, fuel/clad temperature, and peak fluence of high energy neutron. The core design study and performance evaluation were performed using a Monte Carlo code, McCARD, and it was confirmed that the 60-year operations of the UCFRs without refueling are feasible. (author)

  14. The Investigation on Using Unity3D Game Engine in Urban Design Study

    Directory of Open Access Journals (Sweden)

    Aswin Indraprastha

    2009-05-01

    Full Text Available Developing a virtual 3D environment by using game engine is a strategy to incorporate various multimedia data into one platform. The characteristic of game engine that is preinstalled with interactive and navigation tools allows users to explore and engage with the game objects. However, most CAD and GIS applications are not equipped with 3D tools and navigation systems intended to the user experience. In particular, 3D game engines provide standard 3D navigation tools as well as any programmable view to create engaging navigation thorough the virtual environment. By using a game engine, it is possible to create other interaction such as object manipulation, non playing character (NPC interaction with player and/or environment. We conducted analysis on previous game engines and experiment on urban design project with Unity3D game engine for visualization and interactivity. At the end, we present the advantages and limitations using game technology as visual representation tool for architecture and urban design studies.

  15. Conceptual design study of Hyb-WT as fusion–fission hybrid reactor for waste transmutation

    International Nuclear Information System (INIS)

    Highlights: • Conceptual design study of fusion-fission hybrid reactor for waste transmutation. • MCNPX and MONTEBURNS are compared for transmutation performance of WT-Hyb. • Detailed neutronic performance of final optimized Hyb-WT design is analyzed. • A new tube-in-duct core design is implemented and compared with pin type design. • Study shows many aspects of hybrid reactor even though scope was limited to neutronic analysis. - Abstract: This study proposes a conceptual design of a hybrid reactor for waste transmutation (Hyb-WT). The design of Hyb-WT is based on a low-power tokamak (less than 150 MWt) and an annular ring-shaped reactor core with metal fuel (TRU 60 w/o, Zr 40 w/o) and a fission product (FP) zone. The computational code systems MONTEBURNS and MCNPX2.6 are investigated for their suitability in evaluating the performance of Hyb-WT. The overall design performance of the proposed reactor is determined by considering pin-type and tube-in-duct core designs. The objective of such consideration is to explore the possibilities for enhanced transmutation with reduced wall loading from fusion neutrons and reduced transuranic (TRU) inventory. TRU and FP depletion is analyzed by calculating waste transmutation ratio, mass burned per full power year (in units of kg/fpy), and support ratio. The radio toxicity analysis of TRUs and FPs is performed by calculating the percentage of toxicity reduction in TRU and FP over a burn cycle

  16. Design Study of an X-ray Crystal Spectrometer for the HANBIT Mirror Machine

    Science.gov (United States)

    Lee, S. G.; Hwang, S. M.; Bitter, M. L.

    1997-11-01

    X-ray crystal spectroscopy is expected to play a major role for the diagnostics of the reactor-like plasmas produced in future large tokamaks, such as KSTAR and ITER. However, it is also desirable to extend the observable spectral range to longer wavelengths (7-15 dotA), which is of interest for the diagnostics of plasmas with much lower electron densities (10^11-10^12 cm-3) and electron temperatures (100 - 200 eV) in other magnetic-confinement experiments, such as the HANBIT mirror machine. The construction of crystal spectrometers for this wavelength range and these plasma conditions is challenging because of the low X-ray emissivity and the fact that the low-energy X-rays are strongly attenuated by even very thin foils or windows. New types of detectors other than the presently used multi-wire proportional counters are therefore needed to obtain a high detection efficiency. In this paper, we present a design study for a vacuum spectrometer with a CCD array detector and detailed estimates of the instrument performance for the observation of spectra from O, Ne and Al ions.

  17. Conceptual Design Studies of the KSTAR Bay-Nm Cassette and Thomson Scattering Optics

    International Nuclear Information System (INIS)

    A Multi-Channel Thomson Scattering System viewing the edge and core of the KSTAR plasma will be installed at the mid-plane port Bay-N. An engineering design study was undertaken at PPPL in collaboration with the Korea Basic Science Institute (KBSI) to determine the optimal optics and cassette design. Design criteria included environmental, mechanical and optical factors. All of the optical design options have common design features; the Thomson Scattering laser, an in-vacuum shutter, a quartz heat shield and primary vacuum window, a set of optical elements and a fiber optic bundle. Neutron radiation damage was a major factor in the choice of competing lens-based and mirror-based optical designs. Both the mirror based design and the lens design are constrained by physical limits of the Bay-N cassette and interference with the Bay-N micro-wave launcher. The cassette will contain the optics and a rail system for maintenance of the optics

  18. Conceptual Design Studies of the KSTAR Bay-Nm Cassette and Thomson Scattering Optics

    Energy Technology Data Exchange (ETDEWEB)

    Feder, R.; Ellis, R.; Johnson, D.; Park, H.; Lee, H. G.

    2005-09-26

    A Multi-Channel Thomson Scattering System viewing the edge and core of the KSTAR plasma will be installed at the mid-plane port Bay-N. An engineering design study was undertaken at PPPL in collaboration with the Korea Basic Science Institute (KBSI) to determine the optimal optics and cassette design. Design criteria included environmental, mechanical and optical factors. All of the optical design options have common design features; the Thomson Scattering laser, an in-vacuum shutter, a quartz heat shield and primary vacuum window, a set of optical elements and a fiber optic bundle. Neutron radiation damage was a major factor in the choice of competing lens-based and mirror-based optical designs. Both the mirror based design and the lens design are constrained by physical limits of the Bay-N cassette and interference with the Bay-N micro-wave launcher. The cassette will contain the optics and a rail system for maintenance of the optics.

  19. Experimental fusion power reactor conceptual design study. Final report. Volume III

    International Nuclear Information System (INIS)

    This document is the final report which describes the work carried out by General Atomic Company for the Electric Power Research Institute on a conceptual design study of a fusion experimental power reactor (EPR) and an overall EPR facility. The primary objective of the two-year program was to develop a conceptual design of an EPR that operates at ignition and produces continuous net power. A conceptual design was developed for a Doublet configuration based on indications that a noncircular tokamak offers the best potential of achieving a sufficiently high effective fuel containment to provide a viable reactor concept at reasonable cost. Other objectives included the development of a planning cost estimate and schedule for the plant and the identification of critical R and D programs required to support the physics development and engineering and construction of the EPR. This volume contains the following appendices: (1) tradeoff code analysis, (2) residual mode transport, (3) blanket/first wall design evaluations, (4) shielding design evaluation, (5) toroidal coil design evaluation, (6) E-coil design evaluation, (7) F-coil design evaluation, (8) plasma recycle system design evaluation, (9) primary coolant purification design evaluation, (10) power supply system design evaluation, (11) number of coolant loops, (12) power conversion system design evaluation, and (13) maintenance methods evaluation

  20. 1300°F 800 MWe USC CFB Boiler Design Study

    Science.gov (United States)

    Robertson, Archie; Goidich, Steve; Fan, Zhen

    Concern about air emissions and the effect on global warming is one of the key factors for developing and implementing new advanced energy production solutions today. One state-of-the-art solution is circulating fluidized bed (CFB) combustion technology combined with a high efficiency once-through steam cycle. Due to this extremely high efficiency, the proven CFB technology offers a good solution for CO2 reduction. Its excellent fuel flexibility further reduces CO2 emissions by co-firing coal with biomass. Development work is under way to offer CFB technology up to 800MWe capacities with ultra-supercritical (USC) steam parameters. In 2009 a 460MWe once-through supercritical (OTSC) CFB boiler designed and constructed by Foster Wheeler will start up. However, scaling up the technology further to 600-800MWe with net efficiency of 45-50% is needed to meet the future requirements of utility operators. To support the move to these larger sizes, an 800MWe CFB boiler conceptual design study was conducted and is reported on herein. The use of USC conditions (˜11 00°F steam) was studied and then the changes, that would enable the unit to generate 1300°F steam, were identified. The study has shown that by using INTREX™ heat exchangers in a unique internal-external solids circulation arrangement, Foster Wheeler's CFB boiler configuration can easily accommodate 1300°F steam and will not require a major increase in heat transfer surface areas.

  1. Design study of Thorium-232 and Protactinium-231 based fuel for long life BWR

    Science.gov (United States)

    Trianti, N.; Su'ud, Z.; Riyana, E. S.

    2012-06-01

    A preliminary design study for the utilization of thorium added with 231Pa based fuel on BWR type reactor has been performed. In the previous research utilization of fuel based Thorium-232 and Uranium-233 show 10 years operation time with maximum excess-reactivity about 4.075% dk/k. To increase reactor operation time and reduce excess-reactivity below 1% dk/k, Protactinium (Pa-231) is used as Burnable Poison. Protactinium-231 has very interesting neutronic properties, which enable the core to reduce initial excess-reactivity and simultaneously increase production of 233U to 231Pa in burn-up process. Optimizations of the content of 231Pa in the core enables the BWR core to sustain long period of operation time with reasonable burn-up reactivity swing. Based on the optimization of fuel element composition (Th and Pa) in various moderation ratio we can get reactor core with longer operation time, 20 ˜ 30 years operation without fuel shuffling or refuelling, with average power densities maximum of about 35 watt/cc, and maximum excess-reactivity 0.56% dk/k.

  2. Design Study for a Future Laguna-LBNO Long-Baseline Neutrino Facility at CERN

    CERN Document Server

    Alabau-Gonzalvo, J; Antoniou, F; Benedikt, M; Calviani, M; Efthymiopoulos, I; Ferrari, A; Garoby, R; Gerigk, F; Gilardoni, S; Goddard, B; Kosmicki, A; Lazaridis, C; Osborne, J; Papaphillippou, Y; Parfenova, A; Shaposhnikova, E; Steerenberg, R; Velten, P; Vincke, H

    2013-01-01

    The Large Apparatus studying Grand Unification and Neutrino Astrophysics (LAGUNA) study [1] investigated seven pre-selected underground sites in Europe (Finland, France, Italy, Poland, Romania, Spain and UK), capable of housing large volume detectors for terrestrial, accelerator generated and astrophysical neutrino research. The study was focused on geo-technical assessment of the sites, concluding that no show-stoppers exist for the construction of the required large underground caverns in the chosen sites. The LAGUNA-LBNO FP7/EC-funded design study extends the LAGUNA study in two key aspects: the detailed engineering of detector construction and operation, and the study of a long-baseline neutrino beam from CERN, and possibly other accelerator centres in Europe. Based on the findings of the LAGUNA study, the Pyh¨asalmi mine in Finland is chosen as prime site for the far detector location. The mine offers the deepest underground location in Europe (-1400 m) and a baseline of 2’300 km from CERN (Fig. 1). ...

  3. The design study of the JT-60SU device. No.8. Nuclear shielding and safety design

    International Nuclear Information System (INIS)

    Results of nuclear shielding design study and safety analysis for the steady-state tokamak device JT-60SU are described. D-T operation (option) for two years is adopted in addition to ten years operation using deuterium. Design work has been done in accordance with general laws for radioisotopes handling in Japan as a guideline of safety evaluation, which is applied to the operation of present JT-60U device. Optimization of the shielding design for the device structure including vacuum vessel has been presented to meet with allowable limits of biological shielding determined in advance. It is shown that JT-60SU can be operated safely in the present JT-60 experimental building. It is planed to use 100g/year of tritium in D-T operation phase. A concept of multiple -barrier system is applied to the facility design to prevent propagation of tritium, in which the torus hall and the tritium removal room provide the tertiary confinement. From the design of atmosphere detritiation system for accidental tritium release, it is shown that tritium concentration level can be reduced to the allowable level after two weeks with reasonable compact size components. Safety assessment related to activation of coolant/air, and atmospheric tritium effluents are discussed. (author)

  4. Design study of superconducting magnets for tokamak experimental fusion reactor, (1)

    International Nuclear Information System (INIS)

    Design study has been made of superconducting magnets for a Tokamak experimental fusion reactor: toroidal field magnet design, poloidal field magnet design, refrigeration system design, magnet safety analysis, and magnet assembling and disassembling system design. A maximum toroidal field in the coil is 11.0 T, providing 5.5 T at plasma center. Nb3Sn superconducting cable is used to attain the toroidal field of 11 T. The coil bore is 7.3 x 11.2 m, and the coil shape is deformed constant-tension D-shape. The magnetomotive force is 185.6 MAT, and the operational current is 25.9 kA. In poloidal field magnet design, the coil is pancake-wound Nb3Sn conductor. The conductor is enclosed in Ti-alloy sheath, which serves also as helium containment vessel. The conductor is cooled by forced flow supercritical helium of 7 atm and 4.6 K, and the operational current is 25 -- 27 kA. (author)

  5. Conceptual design study of a concrete canister spent-fuel storage facility

    International Nuclear Information System (INIS)

    This report presents a conceptual design study for the interim storage of CANDU spent fuel in concrete canisters. The canisters will be concrete flasks, which contain fuel prepackaged in double steel containment, and will be cooled by natural air convection. This is one of the methods proposed as a potential alternative to water pool storage. A preliminary study of this concept was done by CAFS (Committee Assessing Fuel Storage), and WNRE (Whiteshell Nuclear Research Establishment) is currently conducting a development and demonstration program. This study of a central facility for the storage of all Canadian spent fuel arisings to the year 2000 was completed in 1975. A brief description of the facilities required and the operations involved, a summary of costs, a survey of the monitoring requirements and a prediction of the personnel exposures associated with this method of storing spent fuel are reported here. The estimated total cost of interim storage in cylindrical canisters at a central site is $6.02/kg U (1975 dollars). Approximately half of this cost is incurred in the shipment of fuel from the reactors to the storage facility. (author)

  6. STEM integration in middle school career and technical education programs: A Delphi design study

    Science.gov (United States)

    Wu-Rorrer, Billy Ray

    The purpose of this qualitative method study with a Delphi research design sought to determine how STEM programs can be effectively integrated into middle school career and technical education programs by local, state, and national educators, administrators, directors, specialists, and curriculum writers. The significance of the study is to provide leaders in CTE with a greater awareness, insight, and strategies about how CTE programs can more effectively integrate academics into career and technical education programs through STEM-related programming. The findings will increase the limited amount of available literature providing best practice strategies for the integration of STEM curriculum into middle school CTE programs. One basic question has guided this research: How can STEM programs be effectively integrated into middle school career and technical education programs? A total of twelve strategies were identified. The strategies of real-world applications and administrative buy-in were the two predominant strategies consistently addressed throughout the review of literature and all three sub-questions in the research study. The Delphi design study consisted of pilot round and three rounds of data collection on barriers, strategies, and professional development for STEM integration in middle school career and technical education programs. Four panelists participated in the pilot round, and 16 panel members not involved in the pilot round participated in the three rounds of questioning and consensus building. In the future, more comprehensive studies can build upon this foundational investigation of middle school CTE programs.

  7. Blade system design studies volume II : preliminary blade designs and recommended test matrix.

    Energy Technology Data Exchange (ETDEWEB)

    Griffin, Dayton A. (Global Energy Concepts, LLC, Kirkland, WA)

    2004-06-01

    As part of the U.S. Department of Energy's Wind Partnerships for Advanced Component Technologies (WindPACT) program, Global Energy Concepts, LLC is performing a Blade System Design Study (BSDS) concerning innovations in materials, processes and structural configurations for application to wind turbine blades in the multi-megawatt range. The BSDS Volume I project report addresses issues and constraints identified to scaling conventional blade designs to the megawatt size range, and evaluated candidate materials, manufacturing and design innovations for overcoming and improving large blade economics. The current report (Volume II), presents additional discussion of materials and manufacturing issues for large blades, including a summary of current trends in commercial blade manufacturing. Specifications are then developed to guide the preliminary design of MW-scale blades. Using preliminary design calculations for a 3.0 MW blade, parametric analyses are performed to quantify the potential benefits in stiffness and decreased gravity loading by replacement of a baseline fiberglass spar with carbon-fiberglass hybrid material. Complete preliminary designs are then presented for 3.0 MW and 5.0 MW blades that incorporate fiberglass-to-carbon transitions at mid-span. Based on analysis of these designs, technical issues are identified and discussed. Finally, recommendations are made for composites testing under Part I1 of the BSDS, and the initial planned test matrix for that program is presented.

  8. Preconceptual design study for solidifying high-level waste: West Valley Demonstration Project

    International Nuclear Information System (INIS)

    This report presents a preconceptual design study for processing radioactive high-level liquid waste presently stored in underground tanks at Western New York Nuclear Service Center (WNYNSC) near West Valley, New York, and for incorporating the radionculides in that waste into a solid. The high-level liquid waste accumulated from the operation of a chemical reprocessing plant by the Nuclear Fuel Services, Inc. from 1966 to 1972. The high-level liquid waste consists of approximately 560,000 gallons of alkaline waste from Purex process operations and 12,000 gallons of acidic (nitric acid) waste from one campaign of processing thoria fuels by a modified Thorex process (during this campaign thorium was left in the waste). The alkaline waste contains approximately 30 million curies and the acidic waste contains approximately 2.5 million curies. The reference process described in this report is concerned only with chemically processing the high-level liquid waste to remove radionuclides from the alkaline supernate and converting the radionuclide-containing nonsalt components in the waste into a borosilicate glass

  9. Design study for KALIMER upper internal structure and reactor refueling system

    International Nuclear Information System (INIS)

    The design study for the KALIMER upper internal structure (UIS) and reactor refueling system has been described. Two distinct features are plug-in UIS and extended refueling outage. For the UIS system, the functional, structural and material requirements have been determined and the accommodation approaches to meet these functional requirements described. For the refueling system, the functional, structural, process and I and C (Instrument and Control) requirements have been established and the accommodation approaches for the functional and process requirements described. The impact on plant availability due to extension of the refueling outage has also been investigated. The accommodation approaches for UIS system show that the design concept of the system will satisfy the functional requirements with a few design issues to be resolved, such as UIS plug in/out handling system and cask design. It is also shown that the functional and process requirements of the refueling system are achievable with the design of the IVTM cask and related transfer system and the extended refueling outage has little effect (within 1%) on the plant availability if extra refueling time do not exceed 1 week. 1 refs. (Author)

  10. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 2. Commercial waste forms, packaging and projections for preconceptual repository design studies

    International Nuclear Information System (INIS)

    This volume, Y/OWI/TM-36/2, ''Commercial Waste Forms, Packaging and Projections for Preconceptual Repository Design Studies,'' is one of a 23-volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-36, which supplements the ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-44. The series provides a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. This volume contains the data base for waste forms, packages, and projections from the commercial waste defined by the Office of Waste Isolation in ''Nuclear Waste Projections and Source Term Data for FY 1977,'' Y/OWI/TM-34. Also, as an alternative data base for repository design and analysis, waste forms, packages, and projections for commercial waste defined by Battelle Pacific Northwest Laboratory (BPNL) have been included. This data base consists of a reference case for use in the alternative design study and a definition of combustible wastes for use in mine fire and hydrogen generation analyses

  11. Design study of power conversion system for the gas turbine high temperature reactor (GTHTR300)

    International Nuclear Information System (INIS)

    A design study of the power conversion system for the Gas Turbine High Temperature Reactor (GTHTR300) was carried out. The study aimed at reducing the total mass of main system components, which simplified system configuration by selecting the non-inter-cooled cycle, and improvement of the performance of power conversion components to enhance economics. The 3-dimensional aerodynamic design of the turbine and compressor achieved high polytropic efficiencies of 93 and 90%, respectively, while reducing the differential thrust of the turbo-compressor to 10 kN as well as keeping a high surge margin of 30% for the compressor, which made it possible to attain a high power conversion efficiency of 45.8%. A horizontal turbo-machine layout, in which the turbo-compressor and generator rotors were connected by a diaphragm-coupling, was proposed to lessen the load requirements for magnetic bearings. The turbo-machine rotor, which passed over critical speeds of bending mode, fulfilled the standard limit of vibration amplitude of 75 μm at the rated rotational speed by optimizing the stiffness of the magnetic bearings. The main focus of the heat exchanger design was size and mass minimization, while fulfilling the target temperature efficiency of 95%. The plate-fin type recuperator employed an off-set fin arrangement, having a square cross section of 1.2 mm x 1.2 mm. The pre-cooler employed helical-coil tubes with low lateral fins. The present study is entrusted from the Ministry of Education, Culture, Sports, Science and Technology of Japan. (author)

  12. Evaluation of Dupic fuel cycle cost based on conceptual design studies

    International Nuclear Information System (INIS)

    In Korea, there are 11 pressurized water reactors (PWR) and 4 Canada deuterium uranium (CANDU) reactors in operation. It is well known that spent PWR fuel contains as much fissile content as approximately twice that of natural uranium used in CANDU fuel material. Considering the unique Korean reactor strategy and residual fissile content of spent PWR fuel, one of the fuel cycle concepts that could be an alternative to either once-through or recycling is to exploit the natural synergy that exists between the two reactor types. The feasibility study of this synergetic fuel cycle has been initiated under the title of DUPIC, which stands for the direct use of spent PWR fuel in CANDU reactors. The technical feasibility, safeguards, and environmental benefit of the DUPIC fuel cycle have been studied and recognized in the international nuclear community. However, the DUPIC fuel cycle has never been demonstrated on a commercial scale, which results in uncertainties in the economics of the DUPIC fuel cycle option. In this study, a model for the DUPIC fuel cycle cost is provided with a simple equilibrium reactor ratio concept. The DUPIC fuel cycle costs are then compared with the once-through fuel cycle costs in order to estimate its competitiveness as an alternative fuel cycle option. The fuel cycle cost is estimated with the unit costs of the fuel cycle components that have been estimated based on conceptual design studies. The fuel cycle cost is calculated by a deterministic method in which the reference fuel cycle component costs are used. The uncertainty of the fuel cycle cost is then estimated by a Monte Carlo simulation method by treating the fuel cycle component costs as random variables. The analysis on the environmental effect has shown that the DUPIC fuel cycle can save uranium resources by 20% and reduce the spent arising by 65%. (authors)

  13. Design study and R and D progress on Japan sodium-cooled fast reactor

    International Nuclear Information System (INIS)

    This paper describes the progress of the design study and research and development (R and D) for the Japan Sodium-cooled Fast Reactor (JSFR) implemented in the 'Fast Reactor Cycle Technology Development (FaCT)' project. A sodium-cooled fast reactor with an electric power of 1,500 MWe is targeted for commercialization at around 2050, and a demonstration reactor assuming a power output from 500 to 750 MWe is planned to start operation at around 2025. R and D on innovative technologies to achieve economic competitiveness and enhance reliability and safety is carried out for the commercialization. A compact reactor vessel without a vessel wall cooling system is pursued in consideration of the wall thickness enough to resist the severest seismic condition. A two-loop cooling system with shortened high-chromium steel piping is a crucial feature, and studies on the hydraulics in the pipe elbow and the fabrication capability of the pipes are being carried out. A double-walled straight tube steam generator is investigated to enhance the reliability against sodium/water reaction, and developmental works are progressing, including the thermal-hydraulic design and trial manufacturing for components. Self-Actuated Shutdown System (SASS) is being developed with safety analysis of the applicability for JSFR and experimental demonstration in the experimental fast reactor JOYO. An advanced fuel handling system is pursued to enhance economic performance. In parallel with considering the necessity of studies on alternative technologies, discussion on whether the innovative technologies can be adopted for JSFR is in progress to be finalized in 2010. (author)

  14. Core design study for power uprating of integral primary system PWR

    International Nuclear Information System (INIS)

    Highlights: • We propose a 20% power uprate of an integral primary system PWR for a better economic performance. • The power uprate is achieved mainly by optimizing core radial power peaking. • By enrichment zoning, power peaking of the proposed core is found to be around 1.43. • The predicted steady state MDNBR of the proposed core is found to be 3.454. • The results show that the proposed core design satisfies all design criteria defined in this study. - Abstract: Core design study for power uprating of integral primary system PWR has been performed. The selected reference core design is a four-year straight burn option of the International Reactor Innovative and Secure (IRIS). The objective of this study is to evaluate the possibility of increasing thermal power of the IRIS reactor by 20%, for a better economic performance. This study includes core neutronic and thermal hydraulic aspects. The power uprate is achieved by minimizing core radial power peaking, and by increasing fuel enrichment and coolant mass flow rate. Parametric calculations have been carried out to optimize the power-uprated core design, with the objective of obtaining relatively low core power peaking and similar initial reactivity with that of the reference core. The optimization is achieved by means of enrichment zoning and application of burnable poison, with different configuration from that of the reference core. The performance of power-uprated core is compared with the reference core. The calculation results show that the proposed core-uprated design with thermal power of 1200 MWt shows preferable characteristics, such as low power peaking of around 1.43, negative reactivity coefficients, and relatively high MDNBR of 3.454

  15. Report of the Reference Designs Study Group on the superconducting super collider

    International Nuclear Information System (INIS)

    The study was based on three different styles of superconducting magnets, each emphasizing a different configuration aimed at sharply decreasing the cost of producing the needed magnet system below that achievable with existing designs. In the study three key areas were addressed: technical feasibility; economic feasibility; and identification of specific R and D needs. Primary emphasis was on estimating the cost range within which SSC construction can confidently be expected to fall. In doing this, attention was focused on the cost of creating the collider itself. The costs of research equipment, preconstruction R and D, and possible site acquisition are not included in this study. The report of the Reference Designs Study is meant neither as a proposal for SSC construction, nor as a site preference statement. We have concluded that the basic principles of design used successfully for existing accelerators can be conservatively extended to a proton collider having the SSC primary specifications of energy and luminosity. Furthermore, each of the three reference magnet styles studied could serve as the foundation for an SSC facility meeting these specifications. A vigorous R and D program of approximately three years duration will be required to refine the cost estimates for the magnets, to determine their actual performance, to determine their manufacturability and reliability, and to develop cost-effective methods for their assembly and quality assurance. It is anticipted that the magnet options can be narrowed to a single one during an early phase of the R and D program. An important R and D goal will be to produce, using mass-production methods, a significant number of magnets of the chosen style. These magnets would then be thoroughly tested under conditions simulating actual accelerator operations

  16. A design study of the consolidated data bank for the evaluated nuclear data libraries

    International Nuclear Information System (INIS)

    A design study establishing a consolidated data bank covering almost all evaluated nuclear data libraries available in the world was made. Broad user requirements known as data consolidation, data independence and data protection are highly considered in the fundamental system design. To realize the system a sophisticated data structuring method for the data consolidation, a high level language for query facility and data protection methods for data security were developed. From the work a data bank named EDFSRS: Evaluated Data Files Storage and Retrieval System has been developed, which is an operational data base system for the evaluated nuclear data libraries compiled in the major three formats: ENDF/B, UKNDL and KEDAK. This system consists of more than fifteen independent programs and some 180 Mega-byte data files and index files (data-base) of the loaded data. It is designed to be operated in the on-line TSS (Time Sharing System) mode, so that users can get any information from their desk top terminals available in these major three formats. Equipped functions are very wide from data loading up to data retrieval, data calculations, data presentation in graphs, index book production and preparation of user accounts. The constructed system is a stand alone system with a characteristic of self-contained system for a data base system thus it gains high portability for the transplantation to other machines. This system is a reflection of user needs to consolidate data in secure, reliable way and to provide easy end-user access to these data. (author)

  17. Design Studies for a VUV--Soft X-ray Free-Electron Laser Array

    International Nuclear Information System (INIS)

    Several recent reports have identified the scientific requirements for a future soft X-ray light source, and a high-repetition-rate free-electron laser (FEL) facility responsive to them is being studied at Lawrence Berkeley National Laboratory (LBNL). The facility is based on a continuous-wave (CW) superconducting linear accelerator with beam supplied by a high-brightness, high-repetition-rate photocathode electron gun operating in CW mode, and on an array of FELs to which the accelerated beam is distributed, each operating at high repetition rate and with even pulse spacing. Dependent on the experimental requirements, the individualFELs may be configured for either self-amplified spontaneous emission (SASE), seeded highgain harmonic generation (HGHG), echo-enabled harmonic generation (EEHG), or oscillator mode of operation, and will produce high peak and average brightness x-rays with a flexible pulse format ranging from sub-femtoseconds to hundreds of femtoseconds. This new light source would serve a broad community of scientists in many areas of research, similar to existing utilization of storage ring based light sources. To reduce technical risks and constructioncosts, accelerator research, development, and design studies at LBNL target the most critical components and systems of the facility. We are developing a high-repetition-rate low-emittance electron gun, high quantum efficiency photocathodes, and have embarked on design and optimization of the electron beam accelerator, FEL switchyard, and array of FELs. We continue our work on precision timing and synchronization systems critical for time-resolved experiments using pump-probe techniques.

  18. Conceptual design studies of the 5 m terahertz antenna for Dome A, Antarctica

    International Nuclear Information System (INIS)

    As the highest, coldest and driest place in Antarctica, Dome A provides exceptionally good observing conditions for ground-based observations over terahertz wavebands. The 5 m Dome A Terahertz Explorer (DATE5) has been proposed to explore new terahertz windows, primarily over wavelengths between 350 and 200 μm. DATE5 will be an open-air, fully-steerable telescope that can function by unmanned operation with remote control. The telescope will be able to endure the harsh polar environment, including high altitude, very low temperature and very low air pressure. The unique specifications, including high accuracies for surface shape and pointing and fully automatic year-around remote operation, along with a stringent limit on the periods of on-site assembly, testing and maintenance, bring a number of challenges to the design, construction, assembly and operation of this telescope. This paper introduces general concepts related to the design of the DATE5 antenna. Beginning from an overview of the environmental and operational limitations, the design specifications and requirements of the DATE5 antenna are listed. From these, major aspects on the conceptual design studies, including the antenna optics, the backup structure, the panels, the subreflector, the mounting and the antenna base structure, are explained. Some critical issues of performance are justified through analyses that use computational fluid dynamics, thermal analysis and de-icing studies, and the proposed approaches for test operation and on-site assembly. Based on these studies, we conclude that the specifications of the DATE5 antenna can generally be met by using enhanced technological approaches

  19. Report of the reference designs study group on the superconducting super collider

    International Nuclear Information System (INIS)

    In December, 1983, the directors of the US high energy accelerator laboratories chartered the National SSC Reference Designs Study to review in detail the technical and economic feasibility of various options for creating the Superconducting Super Collider (SSC) facility, a 20 TeV on 20 TeV proton-proton collider having a luminosity up to 1033 cm-2sec-1. The primary objective of the study was to help the DOE, the high energy physics community, and the scientific community as a whole to decide how best to proceed with SSC R and D directed toward improving the cost effectiveness of applicable accelerator technology. We have concluded that the basic principles of design used successfully for existing accelerators can be conservatively extended to a proton collider having the SSC primary specifications of energy and luminosity. Furthermore, each of the three reference magnet styles studied could serve as the foundation for an SSC facility meeting these specifications. A vigorous R and D program of approximately three years duration will be required to refine the cost estimates for the magnets, to determine their actual performance, to determine their manufacturability and reliability, and to develop cost-effective methods for their assembly and quality assurance. It is anticipated that the magnet options can be narrowed to a single one during an early phase of the R and D program. An important R and D goal will be to produce, using mass-production methods, a significant number of magnets of the chosen style. These magnets would then be thoroughly tested under conditions simulating actual accelerator operations

  20. Design studies for a PET detector module using a PIN photodiode to measure depth of interaction

    International Nuclear Information System (INIS)

    The authors present design studies of a multi-layer PET detector module that uses an 8x8 array of 3 mm square PIN photodiodes to both identify the crystal of interaction and measure the depth of interaction. Each photodiodes coupled to one end of a 3x3x30 mm BGO crystal, with the opposite ends of 64 such crystals attached to a single 1 inch square photomultiplier tube that provides a timing signal and energy discrimination. Each BGO crystal is coated with a lossy reflector, so the ratio of light detected in the photodiode and photomultiplier tube depends on the interaction depth in the crystal, and is used to determine this depth of interaction on an event by event basis. A test module with one 3x3x30 mm BGO crystal, one 3 mm square PIN photodiode, and one photomultiplier tube is operated at -20 C with an amplifier peaking time of 4 μs, and a depth of interaction resolution of 5 to 8 mm fwhm measured. Simulations predict that this virtually eliminates radial elongation in a 60 cm diameter BGO tomograph. The photodiode signal corresponding to 511 keV energy deposit varies linearly with excitation position, ranging from 1,250 electrons (e-) at the end closest to the photodiode to 520 e- at the opposite end. The electronic noise is a position independent 330 e- fwhm, so the signal to noise ratio is sufficient to reliably identify the crystal of interaction in a 64 element module

  1. Engineering design study of a reference theta-pinch reactor (RTPR)

    International Nuclear Information System (INIS)

    This report describes an engineering conceptual design study of a fusion reactor power plant based on the theta-pinch concept. A high-β, D-T plasma is produced by means of a programmed pulsed magnetic field in an approximately toroidal chamber having major and minor radii of 56 m and 0.5 m, respectively. The field produces a short, fast implosion stage followed by a longer adiabatic compression stage during which the D-T fusion occurs. The D-T burn stage has a duration of approximately 0.080 s, and the cycle time is 10 s. To protect the first wall after the burn, a gas blanket is used to cool the plasma in a slowly decreasing magnetic field. The fusion reactor power plant consists of 10 major systems as follows: implosion heating, plasma compression and confinement, magnetic energy transfer and storage, first wall, blanket, biological shield, fuel supply and removal, fuel-ash reprocessing, lithium processing, and energy conversion. Liquid lithium is the primary coolant. Other materials include alumina, provisionally chosen as the first-wall insulator, niobium as the first-wall and blanket structural material, beryllium as the neutron breeder, and graphite as a moderator. Two energy conversion schemes are considered: a conventional, low-temperature system which uses a Na-steam cycle, and an advanced, high-temperature steam system which uses a potassium topping cycle. Special attention is given to plasma burn dynamics, overall energy balance, blanket neutronics and thermal response, radiation shielding, radiation effects on and corrosion of construction materials, thermal and irradiation response of the Al2O3-Nb first wall, and tritium recovery and containment. Unique features of the design include a novel superconducting magnetic-energy transfer and storage system and a modular blanket structure which permits easy access for maintenance. (author)

  2. Scientific Objectives and Design Study of an Adaptive Optics Visual Echelle Spectrograph and Imager Coronograph (AVES-IMCO) for the NAOS Visitor Focus at the VLT

    Science.gov (United States)

    Pallavicini, Roberto; Zerbi, Filippo; Beuzit, Jean-Luc; Bonanno, Giovanni; Bonifacio, Piercarlo; Comari, Maurizio; Conconi, Paolo; Delabre, Bernard; Franchini, Mariagrazia; Marcantonio, Paolo Di; Lagrange, Anne-Marie; Mazzoleni, Ruben; Molaro, Paolo; Pasquini, Luca; Santin, Paolo

    We present the scientific case for an Adaptive Optics Visual Echelle Spectrograph and Imager Coronograph (AVES-IMCO) that we propose as a visitor instrument for the secondary port of NAOS at the VLT. We show that such an instrument would be ideal for intermediate resolution (R=16,000) spectroscopy of faint sky-limited objects down to a magnitude of V=24.0 and will complement very effectively the near-IR imaging capabilities of CONICA. We present examples of science programmes that could be carried out with such an instrument and which cannot be addressed with existing VLT instruments. We also report on the result of a two-year design study of the instrument, with specific reference to its use as parallel instrument of NAOS.

  3. Core and Refueling Design Studies for the Advanced High Temperature Reactor

    Energy Technology Data Exchange (ETDEWEB)

    Holcomb, David Eugene [ORNL; Ilas, Dan [ORNL; Varma, Venugopal Koikal [ORNL; Cisneros, Anselmo T [ORNL; Kelly, Ryan P [ORNL; Gehin, Jess C [ORNL

    2011-09-01

    The Advanced High Temperature Reactor (AHTR) is a design concept for a central generating station type [3400 MW(t)] fluoride-salt-cooled high-temperature reactor (FHR). The overall goal of the AHTR development program is to demonstrate the technical feasibility of FHRs as low-cost, large-size power producers while maintaining full passive safety. This report presents the current status of ongoing design studies of the core, in-vessel structures, and refueling options for the AHTR. The AHTR design remains at the notional level of maturity as important material, structural, neutronic, and hydraulic issues remain to be addressed. The present design space exploration, however, indicates that reasonable options exist for the AHTR core, primary heat transport path, and fuel cycle provided that materials and systems technologies develop as anticipated. An illustration of the current AHTR core, reactor vessel, and nearby structures is shown in Fig. ES1. The AHTR core design concept is based upon 252 hexagonal, plate fuel assemblies configured to form a roughly cylindrical core. The core has a fueled height of 5.5 m with 25 cm of reflector above and below the core. The fuel assembly hexagons are {approx}45 cm across the flats. Each fuel assembly contains 18 plates that are 23.9 cm wide and 2.55 cm thick. The reactor vessel has an exterior diameter of 10.48 m and a height of 17.7 m. A row of replaceable graphite reflector prismatic blocks surrounds the core radially. A more complete reactor configuration description is provided in Section 2 of this report. The AHTR core design space exploration was performed under a set of constraints. Only low enrichment (<20%) uranium fuel was considered. The coated particle fuel and matrix materials were derived from those being developed and demonstrated under the Department of Energy Office of Nuclear Energy (DOE-NE) advanced gas reactor program. The coated particle volumetric packing fraction was restricted to at most 40%. The pressure

  4. Design Study of Air Cooled GTHTR300A for inland installation

    International Nuclear Information System (INIS)

    GTHTR300 is a design series of power and cogeneration plants based on common technologies of a high temperature gas reactor and a direct Brayton cycle gas turbine power generator. Although the series currently selects seawater cooling as the method to reject reactor waste, heat, the employment of the Brayton cycle offers potential conditions for economical dry air cooling This paper reports the results of a conceptual design study for a new plant entry in the series, namely GTHTR300A for air cooling. Dry air cooling is made to replace seawater cooling of the baseline plant without forcing major redesign and new development in the reactor or in the balance of plant as is done with previous baseline derivatives. For example, the core layout and the reactor pressure vessel dimensions are not changed from the baseline even if their optimization may produce small cost saving. It is also found that by down scaling reactor thermal power by 20%, the size for the balance of plant is unchanged while delivering the same level of plant generating efficiency. An original design feature introduced in GTHTR300A is use of an intermediate helium loop, instead of usually water, to transport waste heat from reactor to cooling tower. Water is not used so that the plant can rule out accident of water ingress into reactor. By operating at high pressure but low temperature, circulating power consumption and equipment cost are kept down for the loop. The air cooling tower employs natural draft although mechanical draft, not detailed in this paper, has also been found acceptable to this plant. A compact tower is obtained due to the high thermal efficiency of 48.2%, as opposed to 34.5% of today's nuclear plants, and to the fact that the cycle rejects waste heat in a high temperature range. The maximum design sharing, high thermal efficiency, enhanced safety, and economical dry cooling make the GTHTR300A practical for inland installation without reliance on a large source of water to reject

  5. Starting points and objectives for a design study of a radioactive waste repository to be mined in a salt dome

    International Nuclear Information System (INIS)

    In close cooperation with Prof.Ir. P.Th. Velzeboer, Professor in Mining of the University of Technology in Delft, a design study has been made of a radioactive waste repository to be mined in a medium size salt dome. This article focuses on the starting points and objectives that formed the basis of this design study. The prime objective was a high degree of radiological and of conventional safety during the construction and operation of the disposal mine and a long-term isolation of the buried radionuclides once the facility was closed down and sealed. (Auth.)

  6. The LAGUNA design study towards giant liquid based underground detectors for neutrino physics and astrophysics and proton decay searches

    CERN Document Server

    Angus, D; Autiero, D; Apostu, A; Badertscher, A; Bennet, T; Bertola, G; Bertola, P F; Besida, O; Bettini, A; Booth, C; Borne, J L; Brancus, I; Bujakowsky, W; Campagne, J E; Danil, G Cata; Chipesiu, F; Chorowski, M; Cripps, J; Curioni, A; Davidson, S; Declais, Y; Drost, U; Duliu, O; Dumarchez, J; Enqvist, T; Ereditato, A; von Feilitzsch, F; Fynbo, H; Gamble, T; Galvanin, G; Gendotti, A; Gizicki, W; Goger-Neff, M; Grasslin, U; Gurney, D; Hakala, M; Hannestad, S; Haworth, M; Horikawa, S; Jipa, A; Juget, F; Kalliokoski, T; Katsanevas, S; Keen, M; Kisiel, J; Kreslo, I; Kudryastev, V; Kuusiniemi, P; Labarga, L; Lachenmaier, T; Lanfranchi, J C; Lazanu, I; Lewke, T; Loo, K; Lightfoot, P; Lindner, M; Longhin, A; Maalampi, J; Marafini, M; Marchionni, A; Margineanu, R M; Markiewicz, A; Marrodan-Undagoita, T; Marteau, J E; Matikainen, R; Meindl, Q; Messina, M; Mietelski, J W; Mitrica, B; Mordasini, A; Mosca, L; Moser, U; Nuijten, G; Oberauer, L; Oprina, A; Paling, S; Pascoli, S; Patzak, T; Pectu, M; Pilecki, Z; Piquemal, F; Potzel, W; Pytel, W; Raczynski, M; Rafflet, G; Ristaino, G; Robinson, M; Rogers, R; Roinisto, J; Romana, M; Rondio, E; Rossi, B; Rubbia, A; Sadecki, Z; Saenz, C; Saftoiu, A; Salmelainen, J; Sima, O; Slizowski, J; Slizowski, K; Sobczyk, J; Spooner, N; Stoica, S; Suhonen, J; Sulej, R; Szarska, M; Szeglowski, T; Temussi, M; Thompson, J; Thompson, L; Trzaska, W H; Tippmann, M; Tonazzo, A; Urbanczyk, K; Vasseur, G; Williams, A; Winter, J; Wojutszewska, K; Wurm, M; Zalewska, A; Zampaolo, M; Zito, M

    2010-01-01

    The feasibility of a next generation neutrino observatory in Europe is being considered within the LAGUNA design study. To accommodate giant neutrino detectors and shield them from cosmic rays, a new very large underground infrastructure is required. Seven potential candidate sites in different parts of Europe and at several distances from CERN are being studied: Boulby (UK), Canfranc (Spain), Fr\\'ejus (France/Italy), Pyh\\"asalmi (Finland), Polkowice-Sieroszowice (Poland), Slanic (Romania) and Umbria (Italy). The design study aims at the comprehensive and coordinated technical assessment of each site, at a coherent cost estimation, and at a prioritization of the sites within the summer 2010.

  7. Conceptual design study FY 1981: synfuels from fusion - using the tandem mirror reactor and a thermochemical cycle to produce hydrogen

    Energy Technology Data Exchange (ETDEWEB)

    Krikorian, O.H. (ed.)

    1982-02-09

    This report represents the second year's effort of a scoping and conceptual design study being conducted for the express purpose of evaluating the engineering potential of producing hydrogen by thermochemical cycles using a tandem mirror fusion driver. The hydrogen thus produced may then be used as a feedstock to produce fuels such as methane, methanol, or gasoline. The main objective of this second year's study has been to obtain some approximate cost figures for hydrogen production through a conceptual design study.

  8. Conceptual design studies of in-vessel viewing equipment for ITER

    International Nuclear Information System (INIS)

    In-vessel viewing systems are essential to inspect all surface of in-vessel components so as to detect and locate damages, and to assist in-vessel maintenance operations. The in-vessel viewing operations are categorized into the three cases, which are 1) rapid inspection just after off-normal events such as disruption, 2) scheduled inspection, and 3) supplementary inspection during maintenance operations. In case of the rapid inspection, the viewing systems have to be operated in vacuum (ca. 10-5Pa) and high temperature (ca. 300degC) under a gamma ray dose rate of 107 R/h. On the other hand, the latter two cases are anticipated to be under atmospheric inert gas, 150degC and 3x106 R/h. Accordingly, the in-vessel viewing systems are required to have sufficient durability under those conditions of all cases as well as precision of the vision to all of in-vessel surface. Based on those requirements, scoping studies on various viewing concepts have been performed and the applicability to the ITER conditions have been assessed. As a result, two types of viewing systems have been chosen, which are a periscope type viewing system and a image fiber type viewing system with a multi-joint manipulator. Both systems are based on radiation hard optical elements which are being developed. In this report, the design features of both viewing systems are described, including technical issues for ITER application. Finally, a periscope type viewing system is recommended as a primary system and the following specifications/conditions are proposed for the further engineering design. (1) Unified type periscope with a movable mirror at the tip (2) Integrated lighting device into the periscope (3) Accessed from top vertical ports located at 7.3m from the machine center (4) Proposed configuration with a total length of around 27m and a diameter of 200mm. (author)

  9. Social Skills Interventions for Preschoolers with Autism Spectrum Disorder: A Description of Single-Subject Design Studies

    Science.gov (United States)

    Gillis, Jennifer M.; Butler, Robert C.

    2007-01-01

    Social skill development is one of the primary areas of intervention for young children with Autism Spectrum Disorders (ASD). The purpose of this article was to conduct a retrospective review of social skills intervention research for preschool children with ASD. A review of 17 single-subject design studies from twelve journals (1999-2006) was…

  10. Interim Design Report for the International Design Study for a Neutrino Factory

    International Nuclear Information System (INIS)

    The starting point for the International Design Study for the Neutrino Factory (the IDS-NF) was the output of the earlier International Scoping Study for a future Neutrino Factory and super-beam facility (the ISS). The accelerator facility described in section 2 incorporates the improvements that have been derived from the substantial amount of work carried out within the Accelerator Working Group. Highlights of these improvements include: (1) Initial concepts for the implementation of the proton driver at each of the three example sites, CERN, FNAL, and RAL; (2) Detailed studies of the energy deposition in the target area; (3) A reduction in the length of the muon beam phase-rotation and bunching systems; (4) Detailed analyses of the impact of the risk that stray magnetic field in the accelerating cavities in the ionization cooling channel will reduce the maximum operating gradient. Several alternative ionization-cooling lattices have been developed as fallback options to mitigate this technical risk; (5) Studies of particle loss in the muon front-end and the development of strategies to mitigate the deleterious effects of such losses; (6) The development of more complete designs for the muon linac and re-circulating linacs; (7) The development of a design for the muon FFAG that incorporates insertions for injection and extraction; and (8) Detailed studies of diagnostics in the decay ring. Other sub-systems have undergone a more 'incremental' evolution; an indication that the design of the Neutrino Factory has achieved a degree of maturity. The design of the neutrino detectors described in section 3 has been optimized and the Detector Working Group has made substantial improvements to the simulation and analysis of the Magnetized Iron Neutrino Detector (MIND) resulting in an improvement in the overall neutrino-detection efficiency and a reduction in the neutrino-energy threshold. In addition, initial consideration of the engineering of the MIND has generated a

  11. Interim Design Report for the International Design Study for a Neutrino Factory

    Energy Technology Data Exchange (ETDEWEB)

    Choubey, S.; Gandhi, R.; Goswami, S.; /Harish-Chandra Res. Inst.; Berg, J.S.; Fernow, R.; Gallardo, J.C.; Gupta, R.; Kirk, H.; Simos, N.; Souchlas, N.; /Brookhaven; Ellis, M.; /Brunel U. /CERN /Durham U., IPPP /Fermilab /Geneva U. /Glasgow U. /Heidelberg, Max Planck Inst. /Imperial Coll., London /Jefferson Lab /Saha Inst.

    2011-10-01

    The starting point for the International Design Study for the Neutrino Factory (the IDS-NF) was the output of the earlier International Scoping Study for a future Neutrino Factory and super-beam facility (the ISS). The accelerator facility described in section 2 incorporates the improvements that have been derived from the substantial amount of work carried out within the Accelerator Working Group. Highlights of these improvements include: (1) Initial concepts for the implementation of the proton driver at each of the three example sites, CERN, FNAL, and RAL; (2) Detailed studies of the energy deposition in the target area; (3) A reduction in the length of the muon beam phase-rotation and bunching systems; (4) Detailed analyses of the impact of the risk that stray magnetic field in the accelerating cavities in the ionization cooling channel will reduce the maximum operating gradient. Several alternative ionization-cooling lattices have been developed as fallback options to mitigate this technical risk; (5) Studies of particle loss in the muon front-end and the development of strategies to mitigate the deleterious effects of such losses; (6) The development of more complete designs for the muon linac and re-circulating linacs; (7) The development of a design for the muon FFAG that incorporates insertions for injection and extraction; and (8) Detailed studies of diagnostics in the decay ring. Other sub-systems have undergone a more 'incremental' evolution; an indication that the design of the Neutrino Factory has achieved a degree of maturity. The design of the neutrino detectors described in section 3 has been optimized and the Detector Working Group has made substantial improvements to the simulation and analysis of the Magnetized Iron Neutrino Detector (MIND) resulting in an improvement in the overall neutrino-detection efficiency and a reduction in the neutrino-energy threshold. In addition, initial consideration of the engineering of the MIND has

  12. Design study for supporting of thin glass optical elements for x-ray telescopes

    Science.gov (United States)

    Freeman, Mark D.; Reid, Paul B.; Davis, William N.

    2008-07-01

    The next large x-ray astrophysics mission launched will likely include soft x-ray spectroscopy as a primary capability. A requirement to fulfill the science goals of such a mission is a large-area x-ray telescope focusing sufficient x-ray flux to perform high-resolution spectroscopy with reasonable observing times. One approach to manufacturing such a telescope is a Wolter-I optic utilizing thin glass segments rather than full shells of revolution. We describe a parameterized Finite Element Modeling (FEM) study that provides insights useful in optimizing the design of a discrete support system to balance the competing requirements of minimizing the effect on optical performance while providing sufficient support to withstand launch loads. Parameters analyzed are number and location of the supports around the glass segments, as well as the glass thickness, size, and angular span. In addition, we utilize more detailed models of several cases taken from the parametric study to examine stress around the bonded area and bond pad size, and compare the stress from the detailed model to the parametric cases from which they were derived.

  13. IceCube++: Design study for a multi-km3 Cherenkov detector

    International Nuclear Information System (INIS)

    The construction of the full 86 string IceCube detector at the South Pole will be completed in January 2011. IceCube will search for astrophysical neutrinos in the TeV and PeV range with unprecedented sensitivity. In case of a discovery it is desirable for this signal to increase the sensitivity. In this study we investigate how to achieve this by increasing the detector volume using a large number of additional optical sensors. For several geometrical configurations of the detector neutrino events are simulated and effective areas are calculated. An important topic is the dependence of the achievable effective area on the neutrino energy and the spacing of the optical sensors.

  14. Design study of the divertor Thomson scattering system for JT-60SA

    International Nuclear Information System (INIS)

    Feasibility study of the divertor Thomson scattering measurement system for JT-60SA is carried out. A case study of different optical configurations reveals that both laser transmission optics and collection optical system are to be embedded in the lower narrow port plug. From the perspective of the laser induced damage threshold, the size and the material for the laser transmission mirror are assessed. Moreover, the performance of the detection system with using polychromator is investigated by use of numerical method, and the transmission wavelength ranges of optical filters are optimized. It is shown that four detector channels are at least necessary for the polychromator, and the measurement accuracy becomes the highest when the detector channel is six. (author)

  15. Large airplane crash on a nuclear plant: Design study against excessive shaking of components

    International Nuclear Information System (INIS)

    The problem of the strong shaking of structures and of components in case of an aircraft impact is the subject of this study. This problem is solved in some designs by protecting the external Nuclear Island block (N.I.) by an external thick wall, capable to withstand the aircraft impact. This wall is connected to the rest of the N.I. by the common foundation slab only. The first part of this study consists of the evaluation of the order of magnitude of the vibration attenuation which can be obtained by this design scheme. Should the attenuation obtained be not sufficient for some parts of the internal structures, some additional design provision could be adopted. In order to solve this problem, a specific design solution is here suggested. It essentially consists in connecting critical parts of structures to the common foundation slab with restraints having an adequate degree of deformability, so that the transmission of high frequency impact forces from other parts of the whole structure is minimized. In a previous paper, the structural protection of the reactor dome and of connected structures of a modern nuclear plant is dealt with. In the present paper, the protection of internal parts of the plant (the internal containment is chosen) in case of strong impact on lateral walls is studied. The indicative result of this study is that the enhancement of attenuation in the transmission of acceleration from the impact point to some representative point in the inner structure is of the order of 75. This result cannot be generalized, as it depends on many parameters of the structure and of the soil.

  16. Leptospirosis in Mexico: Epidemiology and Potential Distribution of Human Cases.

    Directory of Open Access Journals (Sweden)

    Sokani Sánchez-Montes

    Full Text Available Leptospirosis is widespread in Mexico, yet the potential distribution and risk of the disease remain unknown.We analysed morbidity and mortality according to age and gender based on three sources of data reported by the Ministry of Health and the National Institute of Geography and Statics of Mexico, for the decade 2000-2010. A total of 1,547 cases were reported in 27 states, the majority of which were registered during the rainy season, and the most affected age group was 25-44 years old. Although leptospirosis has been reported as an occupational disease of males, analysis of morbidity in Mexico showed no male preference. A total number of 198 deaths were registered in 21 states, mainly in urban settings. Mortality was higher in males (61.1% as compared to females (38.9%, and the case fatality ratio was also increased in males. The overall case fatality ratio in Mexico was elevated (12.8%, as compared to other countries. We additionally determined the potential disease distribution by examining the spatial epidemiology combined with spatial modeling using ecological niche modeling techniques. We identified regions where leptospirosis could be present and created a potential distribution map using bioclimatic variables derived from temperature and precipitation. Our data show that the distribution of the cases was more related to temperature (75% than to precipitation variables. Ecological niche modeling showed predictive areas that were widely distributed in central and southern Mexico, excluding areas characterized by extreme climates.In conclusion, an epidemiological surveillance of leptospirosis is recommended in Mexico, since 55.7% of the country has environmental conditions fulfilling the criteria that favor the presence of the disease.

  17. Leptospirosis in Mexico: Epidemiology and Potential Distribution of Human Cases

    Science.gov (United States)

    Sánchez-Montes, Sokani; Espinosa-Martínez, Deborah V.; Ríos-Muñoz, César A.; Berzunza-Cruz, Miriam; Becker, Ingeborg

    2015-01-01

    Background Leptospirosis is widespread in Mexico, yet the potential distribution and risk of the disease remain unknown. Methodology/Principal Findings We analysed morbidity and mortality according to age and gender based on three sources of data reported by the Ministry of Health and the National Institute of Geography and Statics of Mexico, for the decade 2000–2010. A total of 1,547 cases were reported in 27 states, the majority of which were registered during the rainy season, and the most affected age group was 25–44 years old. Although leptospirosis has been reported as an occupational disease of males, analysis of morbidity in Mexico showed no male preference. A total number of 198 deaths were registered in 21 states, mainly in urban settings. Mortality was higher in males (61.1%) as compared to females (38.9%), and the case fatality ratio was also increased in males. The overall case fatality ratio in Mexico was elevated (12.8%), as compared to other countries. We additionally determined the potential disease distribution by examining the spatial epidemiology combined with spatial modeling using ecological niche modeling techniques. We identified regions where leptospirosis could be present and created a potential distribution map using bioclimatic variables derived from temperature and precipitation. Our data show that the distribution of the cases was more related to temperature (75%) than to precipitation variables. Ecological niche modeling showed predictive areas that were widely distributed in central and southern Mexico, excluding areas characterized by extreme climates. Conclusions/Significance In conclusion, an epidemiological surveillance of leptospirosis is recommended in Mexico, since 55.7% of the country has environmental conditions fulfilling the criteria that favor the presence of the disease. PMID:26207827

  18. Design studies and commissioning plans for plasma acceleration research station experimental program

    Energy Technology Data Exchange (ETDEWEB)

    Mete, O.; Xia, G.; Hanahoe, K. [School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL (United Kingdom); The Cockcroft Institute, Sci-Tech Daresbury, Warrington, Halton WA4 4AD (United Kingdom); Dover, M.; Wigram, M.; Wright, J.; Zhang, J. [School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL (United Kingdom); Smith, J. [Tech-X UK Ltd, Sci-Tech Daresbury, Warrington, Cheshire WA4 4FS (United Kingdom)

    2015-10-15

    Plasma acceleration research station is an electron beam driven plasma wakefield acceleration test stand proposed for CLARA facility in Daresbury Laboratory. In this paper, the interaction between the electron beam and the plasma is numerically characterised via 2D numerical studies by using VSIM code. The wakefields induced by a single bunch travelling through the plasma were found to vary from 200 MV/m to 3 GV/m for a range of bunch length, bunch radius, and plasma densities. Energy gain for the particles populating the bunch tail through the wakefields driven by the head of the bunch was demonstrated. After determining the achievable field for various beams and plasma configurations, a reference setting was determined for further studies. Considering this reference setting, the beam quality studies were performed for a two-bunch acceleration case. The maximum energy gain as well as the energy spread mitigation by benefiting from the beam loading was investigated by positioning the witness and driver bunches with respect to each other. Emittance growth mechanisms were studied considering the beam-plasma and beam-wakefield interactions. Eventually, regarding the findings, the initial commissioning plans and the aims for the later stages were summarised.

  19. Design study of an armor tile handling manipulator for the Fusion Experimental Reactor

    International Nuclear Information System (INIS)

    A conceptual design of the Fusion Experimental Reactor (FER), which is a D-T burning reactor following on JT-60 in Japan, has been developed by Japan Atomic Energy Research Institute (JAERI). In FER, a rail-mounted vehicle concept is planned to be adopted for in-vessel maintenance, such as maintenance of divertor plates and armor tiles. Advantages of this concept are the high stiffness of the rail as a base structure for maintenance and the high mobility of the vehicle along the rail. Twin armor tile handling manipulators installed on both sides of the vehicle have been designed. The respective manipulators for armor tile handling have 8 degrees of freedom in order to have access to any place of the first wall and to go through the horizontal port by operating manipulator joints. If the two types of manipulators for divertor plates and armor tiles are installed on the vehicle and the divertor handling manipulator carries a case filled with armor tiles, the replacement time of armor tiles will be reduced. In FER, moreover, maintenance of armor tiles, which is a scheduled maintenance, is planned to be carried out by the autonomous control using position sensors etc. In order to accumulate the data base for the development of the autonomous control of the manipulator in armor tile maintenance, the present paper describes basic mechanical characteristics (stress, deflection and natural frequency) of the armor tile handling manipulator calculated by static stress and dynamic eigenvalue analyses. (orig.)

  20. Mobile Collaborative Informal Learning Design: Study of collaborative effectiveness using Activity Theory

    Directory of Open Access Journals (Sweden)

    Hasnain Zafar Baloch

    2012-07-01

    Full Text Available Smart Mobile Devices (SMD are there for many years but using them as learning tools started to emerge as new research area. The trend to merge collaborative learning methodology by using mobile devices in informal context is important for implementation of Learner Centric Learning (LCL. Survey and numerous studies show that more than 95% of students in colleges are users of these smart mobile devices in developed world. Developing counties are also catching up and we can see this percentage is almost same in university level in these countries. Students are using SMDs for learning in some form. Higher education Institutions also try to embark their E-learning to Mobile learning (ML. The aim of this paper is to do propose operational framework for designing Mobile Collaborative Informal learning activities using SMDs. Show results of experimental and case study done to study the Mobile Collaborative Informal learning using Activity Theory (AT. Core Components of framework are Mobile Learning Activities/Objects, Wireless/Mobile Smart devices, Collaborative knowledge and Collaborative learning. The research mention here is its infancy stage.

  1. Design study and evaluation of advanced reprocessing systems for FR fuel cycle

    International Nuclear Information System (INIS)

    A variety of aqueous and non-aqueous reprocessing methods were investigated to reveal promising candidates for an advanced reprocessing system that satisfies several needs, such as economical improvement, high utilization of uranium and transuranic (TRU) elements, and enhancement of proliferation resistance. The results are as follows: (1) The advanced aqueous method that consists of a simplified PUREX with a single-cycle extraction process, crystallization process, and TRU recovery process, provides a reduction in construction costs by about 40%. As a result, this method could achieve the economical target for a 200-ton/year plant. (2) Three non-aqueous reprocessing methods, oxide-electrowinning, metal-electrowinning, and the fluoride-volatility method also achieved the economic target for a 200-ton/year plant. In the case of a 50-ton/year plant, a great improvement effort is required, although they are economical in comparison with the advanced aqueous method. (3) The metal-electrowinning method has advantages for the reprocessing of metal and nitride fuels. (author)

  2. EDIN design study alternate space shuttle booster replacement concepts. Volume 1: Engineering analysis

    Science.gov (United States)

    Demakes, P. T.; Hirsch, G. N.; Stewart, W. A.; Glatt, C. R.

    1976-01-01

    The use of a recoverable liquid rocket booster (LRB) system to replace the existing solid rocket booster (SRB) system for the shuttle was studied. Historical weight estimating relationships were developed for the LRB using Saturn technology and modified as required. Mission performance was computed using February 1975 shuttle configuration groundrules to allow reasonable comparison of the existing shuttle with the study designs. The launch trajectory was constrained to pass through both the RTLS/AOA and main engine cut off points of the shuttle reference mission 1. Performance analysis is based on a point design trajectory model which optimizes initial tilt rate and exoatmospheric pitch profile. A gravity turn was employed during the boost phase in place of the shuttle angle of attack profile. Engine throttling add/or shutdown was used to constrain dynamic pressure and/or longitudinal acceleration where necessary. Four basic configurations were investigated: a parallel burn vehicle with an F-1 engine powered LRB; a parallel burn vehicle with a high pressure engine powered LRB; a series burn vehicle with a high pressure engine powered LRB. The relative sizes of the LRB and the ET are optimized to minimize GLOW in most cases.

  3. Space Station Furnace Facility. Volume 2: Requirements definition and conceptual design study. Appendix 3: Environment analysis

    Science.gov (United States)

    1992-01-01

    A Preliminary Safety Analysis (PSA) is being accomplished as part of the Space Station Furnace Facility (SSFF) contract. This analysis is intended to support SSFF activities by analyzing concepts and designs as they mature to develop essential safety requirements for inclusion in the appropriate specifications, and designs, as early as possible. In addition, the analysis identifies significant safety concerns that may warrant specific trade studies or design definition, etc. The analysis activity to date concentrated on hazard and hazard cause identification and requirements development with the goal of developing a baseline set of detailed requirements to support trade study, specifications development, and preliminary design activities. The analysis activity will continue as the design and concepts mature. Section 2 defines what was analyzed, but it is likely that the SSFF definitions will undergo further changes. The safety analysis activity will reflect these changes as they occur. The analysis provides the foundation for later safety activities. The hazards identified will in most cases have Preliminary Design Review (PDR) applicability. The requirements and recommendations developed for each hazard will be tracked to ensure proper and early resolution of safety concerns.

  4. Aerodynamic design study on HTGR helium gas turbines. Investigation on the effect of design conditions

    International Nuclear Information System (INIS)

    Performance prediction codes for an axial turbine and an axial compressor were prepared based on the loss models of Craig, Cox and Wilson and of Koch, Smith and Wilson respectively. Using those codes, preliminary design of 3600 rpm single-shaft HTGR helium gas turbines were carried out. Influences of changing system mass flow rate and pressure on turbine and compressor design and performance were surveyed. Possible conditions of these parameters were found in which 3600 rpm single-shaft gas turbines could be properly designed. Feasibility of magnetic bearings and rotor dynamic design, which were not taken into account in this investigation, should be considered in future studies. A small power, high pressure HTGR gas turbine is difficult to design in a single-shaft configuration. As an alternative plan, a preliminary design of a 2-shaft gas turbine with an electrical output of 100 MWe and an inlet pressure of 6 MPa was carried out. High practicability and performance were expected. Probably, in this particular case, magnetic bearings now on the market can be used. (author). 65 refs

  5. Design studies and commissioning plans for plasma acceleration research station experimental program

    International Nuclear Information System (INIS)

    Plasma acceleration research station is an electron beam driven plasma wakefield acceleration test stand proposed for CLARA facility in Daresbury Laboratory. In this paper, the interaction between the electron beam and the plasma is numerically characterised via 2D numerical studies by using VSIM code. The wakefields induced by a single bunch travelling through the plasma were found to vary from 200 MV/m to 3 GV/m for a range of bunch length, bunch radius, and plasma densities. Energy gain for the particles populating the bunch tail through the wakefields driven by the head of the bunch was demonstrated. After determining the achievable field for various beams and plasma configurations, a reference setting was determined for further studies. Considering this reference setting, the beam quality studies were performed for a two-bunch acceleration case. The maximum energy gain as well as the energy spread mitigation by benefiting from the beam loading was investigated by positioning the witness and driver bunches with respect to each other. Emittance growth mechanisms were studied considering the beam-plasma and beam-wakefield interactions. Eventually, regarding the findings, the initial commissioning plans and the aims for the later stages were summarised

  6. Design Study of Full Scale Accelerator Driven System (ADS, for Transmuting High Level Waste of MA/Pu

    Directory of Open Access Journals (Sweden)

    Marsodi

    2008-07-01

    Full Text Available The ADS system used in this study consisting of a high intensity proton linear accelerator, a spallation target, and a sub-critical reactor core. The Pb-Bi spallation target is bombarded by high intensity protons coming from the accelerator. The fast neutrons generated from the spallation reaction were used to drive the sub-critical reactor core. In this ADS system, the neutron source is in the center of reactor core region, so that the neutron distribution was concentrated in the center of core region. In this case, the B/T of MA/Pu could be performed effectively in the center of core region. The neutron energy in the outer region of reactor core was decreased due to the moderation of fuel and coolant materials. Such condition gives a chance to perform Burning and/or Transmutation of LLFPs.The basic parameters of this system are shown in the form of neutronic design, neutron spectrum and B/T rate, including other aspects related to the safety operation system. Furthermore, the analysis of the ADS system was accomplished using ATRAS computer code of the Japan Atomic Energy Research Institute, JAERI[1]. Due to the complexity of the reactor calculation codes, the author has carried out only those calculations needed for analyzing the neutronics system and some parameters related to the safety system. Design study of the transmutation system was a full-scale power level system of 657.53 MWt sub-critical reactor for an accelerator-driven transmutation system. The liquid Pb-Bi was used together as the spallation target materials and coolant of the system, because of some advantages of Pb-Bi in the system concerning the comparison with the sodium coolant. Moreover, they have a possibility to achieve a hard neutron energy spectrum, avoid a positive void reactivity coefficient, allow much lower system operating temperatures, and are favorable for safety in the event of coolant leakage. The multiplication factor of sub-critical core design was adjusted

  7. Conceptual engineering design studies of 1985-era commercial VTOL and STOL transports that utilize rotors. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Magee, J.P.; Clark, R.D.; Widdison, C.A.

    1975-05-01

    Conceptual design studies are summarized of tandem-rotor helicopter and tilt-rotor aircraft for a short haul transport mission in the 1985 time frame. Vertical takeoff designs of both configurations are discussed, and the impact of external noise criteria on the vehicle designs, performance, and costs are shown. A STOL design for the tilt-rotor configuration is reported, and the effect of removing the vertical takeoff design constraints on the design parameters, fuel economy, and operating cost is discussed.

  8. Design study on containers for geological disposal of high-level radioactive waste. Phase 2

    International Nuclear Information System (INIS)

    This study has considered the feasibility of three designs for containers which would isolate the waste from the environment for a minimum period of 500 to 1000 years. The candidate container designs were taken from the results of a previous study by Ove Arup and Partners (1985) and were developed as the study progressed. Their major features can be summarized as follows: Type A: A thin-walled corrosion-resistant metal shell filled with lead or cement grout. Type B: An unfilled thick-walled carbon steel shell. Type C: an unfilled carbon steel shell plated externally with corrosion-resistant metal. Reference repository conditions in clay, granite and salt, reference disposal operations and metals corrosion data have been taken from various European Community radioactive waste management research and engineering projects. The study concludes that design types A and B are feasible in manufacturing terms but design Type C is not. Furthermore, a titanium-palladium alloy is considered the most suitable metal for Type A container shells and lead is the preferred filler. The analysis shows that design Types A and B both have adequate resistance to pressure and temperature loadings and both would resist accidental impact damage when upright. A reduction in waste heat output at disposal would lower the stress levels in Type A containers but would have virtually no effect on Type B. There is insufficient data to compare the relative costs and benefits of design Types A and B. In conclusion design Types A and B are both considered feasible but Type A would require more development than Type B. In both cases further research is needed to confirm the long-term corrosion performance of the candidate materials. It is recommended that model containers should be produced to demonstrate the proposed methods of manufacture and that they should be tested to validate the analytical techniques used

  9. A preliminary design study of a pool-type FBR 'ARES' eliminating intermediate heat transport systems

    International Nuclear Information System (INIS)

    An innovative reactor concept 'ARES' (Advanced Reactor Eliminating Secondary system) is proposed to aim at reducing the construction cost of a liquid metal cooled fast breeder reactor (LMFBR). This concept is developed to show the ultimate cost down potential of LMFBR's at their commercial stage. The electrical output is 1500 MW, while the thermal output is 3900 MW. Main components of the primary cooling system are four electromagnetic pumps (EMP) and eight double-wall-tube steam generators (SG). Both of them are installed in a reactor vessel like pool type LMFBR's. An intermediate heat transport system which a previous LMFBR has it eliminated, main components of which are intermediate heat exchangers (IHX), secondary pumps and secondary piping. Further, a high reliable SG could decrease the occurrence of water leak accidents and reduce the related mitigation systems. In this study, structure concept, approach to embody a high reliable SG and accidents analyses are carried out. Flow path configuration is mainly discussed in investigation of the structure concept. In case of a water leak accident in a SG, the fault SG must be isolated to prevent a reaction production from flowing into the core. The measure to cut both inlet and outlet coolant flow paths by siphon-break mechanism is adopted to be consistent with the decay heat removal operation. The safety design approach of the double-wall-tube SG is investigated to limit the accident occurrence below 10-7 (1/ry). A tube-to-tube weld is excluded from the reference design, because the welding process is too difficult and complicated to prevent adhesion of the double-wall-tube effectively. The reliability of the tube-to-tube-sheet was evaluated as 10-10 (1/hr) for an inner tube and 10-9 (1/hr) for an outer tube with reference to the failure experience of previous SG's. The failure must be detected within 60 to 120 minutes. Finally, a seamless U tube type of double-wall-tube SG is adopted. Transient events due to

  10. Design study of a 10 MW MgB2 superconductor direct drive wind turbine generator

    OpenAIRE

    Abrahamsen, Asger Bech; Magnusson, Niklas; Liu, Dong; Stehouwer, Ewoud; Hendriks, Ben; Polinder, Henk

    2014-01-01

    A design study of a 10 MW direct drive wind turbine generator based on MgB2 superconducting wires is presented and the cost of the active materials of the generator is estimated to be between 226 €/kW and 84 €/kw, which is lower than the threshold values of 300 €/kW of the INNWIND.EU project. A nacelle structure with a front-mounted generator is presented for further investigation of the integration of such a superconducting generator into offshore turbines with power ratings considerably lar...

  11. Design study of a 10 MW MgB2 superconductor direct drive wind turbine generator

    DEFF Research Database (Denmark)

    Abrahamsen, Asger Bech; Magnusson, Niklas; Liu, Dong; Stehouwer, Ewoud; Hendriks, Ben; Polinder, Henk

    A design study of a 10 MW direct drive wind turbine generator based on MgB2 superconducting wires is presented and the cost of the active materials of the generator is estimated to be between 226 €/kW and 84 €/kw, which is lower than the threshold values of 300 €/kW of the INNWIND.EU project. A...... nacelle structure with a front-mounted generator is presented for further investigation of the integration of such a superconducting generator into offshore turbines with power ratings considerably larger than 10 MW....

  12. Design study of high average power (20-100 watts) pulsed nitrogen lasers at lambda = 3371 A

    International Nuclear Information System (INIS)

    The purpose of this design study is to assess the feasibility of building high average power nitrogen lasers with a goal of identifying data which must be obtained and technology which must be developed for the venture to succeed. The report consists of four sections which treats respectively; (1) laser modeling, (2) mode-control and energy extraction, (3) electrical pulser technology, and (4) gas flow. The conclusion reached is that the feasibility of high average power nitrogen lasers is very positive. Conceptual designs for 20 and 100 W nitrogen lasers are presented in (5). (U.S.)

  13. Conceptual design study of the hylife lithium waterfall laser fusion chamber. FY 1978 annual report to Lawrence Livermore Laboratory

    International Nuclear Information System (INIS)

    Conceptual design studies of the target chamber defined the general configuration and dimensions of the chamber and the inlet plenum, orifice plate, and nozzle plate concepts required to generate the desired lithium jet fall. Preliminary studies were performed of the target chamber interfaces with the liquid lithium supply system, the laser system, the pellet injection system, and the target chamber mounting and support system. Target chamber environmental effects resulting from typical thermonuclear burns were evaluated. The outlet region of the target chamber was outlined conceptually, and preliminary design considerations were given to the annular graphite reflector regions of the target chamber and the associated liquid lithium coolant passages

  14. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 12. Repository preconceptual design studies: shale

    International Nuclear Information System (INIS)

    This document describes a preconceptual design for a nuclear waste storage facility in shale. The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area, and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/13, ''Drawings for Repository Preconceptual Design Studies: Shale.''

  15. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 12. Repository preconceptual design studies: shale

    Energy Technology Data Exchange (ETDEWEB)

    1978-04-01

    This document describes a preconceptual design for a nuclear waste storage facility in shale. The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area, and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/13, ''Drawings for Repository Preconceptual Design Studies: Shale.''

  16. Preliminary systems design study assessment report. Volume 3, Process in-place/leave in-place concepts

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L. [EG and G Idaho, Inc., Idaho Falls, ID (United States); Feizollahi, F. [Bechtel National, Inc., San Francisco, CA (United States); Del Signore, J.C. [Ebasco Environmental, Richland, WA (United States)

    1991-09-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex`s Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept.

  17. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 14. Repository preconceptual design studies: basalt

    International Nuclear Information System (INIS)

    This document describes a preconceptual design for a nuclear waste storage facility in basalt. The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/15, ''Drawings for Repository Preconceptual Design Studies: Basalt.''

  18. An Overview of Demise Calculations, Conceptual Design Studies, and Hydrazine Compatibility Testing for the GPM Core Spacecraft Propellant Tank

    Science.gov (United States)

    Estes, Robert H.; Moore, N. R.

    2007-01-01

    NASA's Global Precipitation Measurement (GPM) mission is an ongoing Goddard Space Flight Center (GSFC) project whose basic objective is to improve global precipitation measurements. It has been decided that the GPM spacecraft is to be a "design for demise" spacecraft. This requirement resulted in the need for a propellant tank that would also demise or ablate to an appropriate degree upon re-entry. This paper will describe GSFC-performed spacecraft and tankage demise analyses, vendor conceptual design studies, and vendor performed hydrazine compatibility and wettability tests performed on 6061 and 2219 aluminum alloys.

  19. Technical support for GEIS: radioactive waste isolation in geologic formations. Volume 8. Repository preconceptual design studies: salt

    International Nuclear Information System (INIS)

    This volume, Volume 8 ''Repository Preconceptual Design Studies: Salt,'' is one of a 23-volume series, ''Technical Support for GEIS: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-36, which supplements the ''Contribution to Draft Generic Environmental Impact Statement on Commercial Waste Management: Radioactive Waste Isolation in Geologic Formations,'' Y/OWI/TM-44. The series provides a more complete technical basis for the preconceptual designs, resource requirements, and environmental source terms associated with isolating commercial LWR wastes in underground repositories in salt, granite, shale and basalt. Wastes are considered from three fuel cycles: uranium and plutonium recycling, no recycling of spent fuel and uranium-only recycling. This document describes a preconceptual design for a nuclear waste storage facility in salt. The facility design consists of several chambers excavated deep within a geologic formation together with access shafts and supportive surface structures. The facility design provides for: receiving and unloading waste containers; lowering them down shafts to the mine level; transporting them to the proper storage area, and emplacing them in mined storage rooms. Drawings of the facility design are contained in TM-36/9, ''Drawings for Repository Preconceptual Design Studies: Salt.''

  20. Slurry reactor design studies

    Energy Technology Data Exchange (ETDEWEB)

    Fox, J.M.; Degen, B.D.; Cady, G.; Deslate, F.D.; Summers, R.L. (Bechtel Group, Inc., San Francisco, CA (USA)); Akgerman, A. (Texas A and M Univ., College Station, TX (USA)); Smith, J.M. (California Univ., Davis, CA (USA))

    1990-06-01

    The objective of these studies was to perform a realistic evaluation of the relative costs of tublar-fixed-bed and slurry reactors for methanol, mixed alcohols and Fischer-Tropsch syntheses under conditions where they would realistically be expected to operate. The slurry Fischer-Tropsch reactor was, therefore, operated at low H{sub 2}/CO ratio on gas directly from a Shell gasifier. The fixed-bed reactor was operated on 2.0 H{sub 2}/CO ratio gas after adjustment by shift and CO{sub 2} removal. Every attempt was made to give each reactor the benefit of its optimum design condition and correlations were developed to extend the models beyond the range of the experimental pilot plant data. For the methanol design, comparisons were made for a recycle plant with high methanol yield, this being the standard design condition. It is recognized that this is not necessarily the optimum application for the slurry reactor, which is being proposed for a once-through operation, coproducing methanol and power. Consideration is also given to the applicability of the slurry reactor to mixed alcohols, based on conditions provided by Lurgi for an Octamix{trademark} plant using their standard tubular-fixed reactor technology. 7 figs., 26 tabs.

  1. ATW neutronics design studies

    International Nuclear Information System (INIS)

    The Accelerator Transmutation of Waste (ATW) concept has been proposed as a transuranics (TRU) (and long-lived fission product) incinerator for processing the 87,000 metric tonnes of Light Water Reactor used fuel which will have been generated by the time the currently deployed fleet of commercial reactors in the US reach the end of their licensed lifetime. The ATW is proposed to separate the uranium from the transuranics and fission products in the LWR used fuel, to fission the transuranics, to send the LWR and ATW generated fission products to the geologic repository and to send the uranium to either a low level waste disposal site or to save it for future use. The heat liberated in fissioning the transuranics would be converted to electricity and sold to partially offset the cost of ATW construction and operations. Options for incineration of long-lived fission products are under evaluation. A six-year science-based program of ATW trade and system studies was initiated in the US FY 2000 to achieve two main purposes: (1) ''to evaluate ATW within the framework of nonproliferation, waste management, and economic considerations,'' and (2) ''to evaluate the efficacy of the numerous technical options for ATW system configuration.'' This paper summarizes the results from neutronics and thermal/hydraulics trade studies which were completed at Argonne National Laboratory during the first year of the program. Core designs were developed for Pb-Bi cooled and Na cooled 840 MWth fast spectrum transmuter designs employing recycle. Additionally, neutronics analyses were performed at Argonne for a He cooled 600 MWth hybrid thermal and fast core design proposed by General Atomics Co. which runs critical for 3/4 and subcritical for 1/4 of its four year once-thin burn cycle. The mass flows and the ultimate loss of transuranic isotopes to the waste stream per unit of heat generated during transmutation have been calculated on a consistent basis and are compared. (Long-lived fission product incineration has not been considered in the studies reported here.)

  2. Bioclimatic solutions existing in vernacular architecture - geothermal climatization

    OpenAIRE

    Ferreira, Débora; Luso, Eduarda; Vaz, António Jorge Ferreira; Fernandes, Sílvia

    2014-01-01

    The traditional architecture is founded as a defining element of the identity of a region, and its essence should be preserved and conserved by means of maintenance and recovery actions. Thus, the best solutions and proposals for intervention should be looked for but this doesn’t imply a back to back on both innovation and construction progress. This work is part of the BIOURB project, a cross-border project between Portugal and Spain, which intended to contribute to the change of the curr...

  3. Intelligent buildings vs. bioclimatic design; Edificios inteligentes vs. diseno bioclimatico

    Energy Technology Data Exchange (ETDEWEB)

    Aguayo Gonzalez, Ricardo [Tecnologico de Monterrey (Mexico)

    2006-10-15

    Present the form of intelligent buildings designing is the article purpose. Those kinds of edifications take advantage of climatic conditions which allow the users comfort and the efficient electric power use, avoiding the polluting agents. It also shows the four next following stages to design an intelligent building to know: the dry weather and relative dampness schedule variations during a year in the building location; the predominant winds direction, intensity and schedule frequency; the cloudiness, rain, etc and how to use the Givoni diagram to obtain the natural air-conditioning strategies and reach the thermal comfort. [Spanish] El proposito de este articulo es presentar la forma de disenar edificios Inteligentes, los cuales aprovechan las condiciones climaticas que permiten el confort de los usuarios y el uso eficiente de la energia electrica, evitando asi la emision de agentes contaminantes. Tambien menciona los siguientes cuatro pasos para el diseno de un edificio inteligente: conocer las variaciones horarias de temperatura seca y humedad relativa durante un ano en el lugar donde estara el edificio, saber la direccion, intensidad y frecuencia horaria de los vientos dominantes, tener conocimiento de la nubosidad, lluvia, etc. y utilizar el diagrama de Givoni para obtener las estrategias de climatizacion natural para obtener el confort termico.

  4. Sustainable buildings. Bioclimatic architecture for housing in a Mediterranean climate

    Energy Technology Data Exchange (ETDEWEB)

    Tirone, L. [Tirone Nunes Urbanismo Lda, Sintra (Portugal)

    2000-07-01

    Although the building sector is the largest energy consumer worldwide, and thus a major contributor to climate change and global warming, the comfort we require in our homes does not have to be harmful to our environment. While in a Mediterranean climate the mean outdoor temperatures coincide with the indoor comfort range, it is possible to apply passive solar technologies in the design of the new buildings and this provides three advantages: The buildings will offer thermal comfort to their inhabitants all year round, relying predominantly on renewable energies. The buildings will not require cooling at any time of year and will require up to 90% less heating than their conventional counterparts. The buildings will be no more costly to construct than their conventional counterparts. (orig.)

  5. The SNL100-03 Blade: Design Studies with Flatback Airfoils for the Sandia 100-meter Blade.

    Energy Technology Data Exchange (ETDEWEB)

    Griffith, Daniel; Richards, Phillip William

    2014-09-01

    A series of design studies were performed to inv estigate the effects of flatback airfoils on blade performance and weight for large blades using the Sandi a 100-meter blade designs as a starting point. As part of the study, the effects of varying the blade slenderness on blade structural performance was investigated. The advantages and disadvantages of blad e slenderness with respect to tip deflection, flap- wise & edge-wise fatigue resistance, panel buckling capacity, flutter speed, manufacturing labor content, blade total weight, and aerodynamic design load magn itude are quantified. Following these design studies, a final blade design (SNL100-03) was prod uced, which was based on a highly slender design using flatback airfoils. The SNL100-03 design with flatback airfoils has weight of 49 tons, which is about 16% decrease from its SNL100-02 predecessor that used conventional sharp trailing edge airfoils. Although not systematically optimized, the SNL100 -03 design study provides an assessment of and insight into the benefits of flatback airfoils for la rge blades as well as insights into the limits or negative consequences of high blade slenderness resulting from a highly slender SNL100-03 planform as was chosen in the final design definition. This docum ent also provides a description of the final SNL100-03 design definition and is intended to be a companion document to the distribution of the NuMAD blade model files for SNL100-03, which are made publicly available. A summary of the major findings of the Sandia 100-meter blade development program, from the initial SNL100-00 baseline blade through the fourth SNL100-03 blade study, is provided. This summary includes the major findings and outcomes of blade d esign studies, pathways to mitigate the identified large blade design drivers, and tool development that were produced over the course of this five-year research program. A summary of large blade tec hnology needs and research opportunities is also presented.

  6. Science requirements and feasibility/design studies of a very-high-altitude aircraft for atmospheric research

    Science.gov (United States)

    Russell, Philip B.; Lux, David P.; Reed, R. Dale; Loewenstein, Max; Wegener, Steven

    1991-01-01

    The advantages and shortcomings of currently available aircraft for use in very high altitude missions to study such problems as polar ozone or stratosphere-troposphere exchange pose the question of whether to develop advanced aircraft for atmospheric research. To answer this question, NASA conducted a workshop to determine science needs and feasibility/design studies to assess whether and how those needs could be met. It was determined that there was a need for an aircraft that could cruise at an altitude of 30 km with a range of 6,000 miles with vertical profiling down to 10 km and back at remote points and carry a payload of 3,000 lbs.

  7. Design study of an air pump and integral lift engine ALF-504 using the Lycoming 502 core

    Science.gov (United States)

    Rauch, D.

    1972-01-01

    Design studies were conducted for an integral lift fan engine utilizing the Lycoming 502 fan core with the final MQT power turbine. The fan is designed for a 12.5 bypass ratio and 1.25:1 pressure ratio, and provides supercharging for the core. Maximum sea level static thrust is 8370 pounds with a specific fuel consumption of 0.302 lb/hr-lb. The dry engine weight without starter is 1419 pounds including full-length duct and sound-attenuating rings. The engine envelope including duct treatment but not localized accessory protrusion is 53.25 inches in diameter and 59.2 inches long from exhaust nozzle exit to fan inlet flange. Detailed analyses include fan aerodynamics, fan and reduction gear mechanical design, fan dynamic analysis, engine noise analysis, engine performance, and weight analysis.

  8. Design study of small molten-salt fission power station suitable for coupling with accelerator molten-salt breeder

    International Nuclear Information System (INIS)

    A design study of /sup 233/U fueled 350 MWth(150MWe) molten-salt fission reactor was proceeded as an example of the economical utility facilities improving excellent inherent safety and easy operation and maintenance as follows (1) no exchange of core graphite resulting a sealed reactor vessel, (2) 99% removal of fission gases only and no continuous chemical processing, (3) very high conversion ratio such as 1.00 (fuel self-sufficient), (4) usefulness for the Trans-U incineration and the non-nuclear proliferation. Its low concentration of /sup 233/UF/sub 4/ will be significant for the symbiotic molten-salt fuel cycle with Accelerator Molten-Salt Breeder or the similiars

  9. Design study for a fine-grained multi-kiloton detector for nucleon decay and neutrino studies

    International Nuclear Information System (INIS)

    Experiments which attempt to measure the lifetimes of protons and bound neutrons require detectors which have 1033 or more fiducial nucleons. If an experiment is to be sensitive to all, or most of the kinematically allowed decay modes, it must also have many samples of information from the nucleon decay products, that is, it must be fine-grained. This report describes a design study for such an experiment carried out at the University of Pennsylvania by E.W. Beier, L.S. Durkin, S.M. Heagy, A.K. Mann and H.H. Williams. The performance of a 160 ton prototype of the nucleon decay detector is also discussed. The detector is based on large, segmented planes of liquid scintillator calorimeter (8m x 8m) viewed by photomultiplier tubes, interleaved with track chambers operated in the proportional mode

  10. Design study of a G-band FEL amplifier for application to cyclotron resonant heating in magnetic fusion reactors

    Science.gov (United States)

    Freund, H. P.; Read, M. E.; Jackson, R. H.; Pershing, D. E.; Taccetti, J. M.

    1995-04-01

    A G-band (140-150 GHz) free-electron laser is described using a coaxial hybrid iron (CHI) wiggler. The CHI wiggler is produced by insertion into a solenoid of a central rod and an outer ring composed of alternating ferrite and nonferrite spacers. The position of the spacers is such that the ferrite (nonferrite) spacers on the central rod are opposite the nonferrite (ferrite) spacers on the outer ring. The field is cylindrically symmetric and exhibits minima in the center of the gap providing for enhanced beam focusing. We describe a tapered wiggler amplifier for plasma heating applications. Preliminary design studies using a nonlinear simulation indicates that output powers of 3.5 MW are possible using a 690 kV/40 A electron beam for a total efficiency of 13%. It is important to note that no beam loss was observed even for realistic values of beam energy spread.

  11. Conceptual design study of Pebble Bed Type High Temperature Gas-cooled Reactor with annular core structure

    International Nuclear Information System (INIS)

    This report presents the Conceptual Design Study of Pebble Bed Type High Temperature Gas-cooled Reactor with Annular Core Structure. From this study, it is made clear that the thermal power of the Pebble Bed Type Reactor can be increased to 500MW through introducing the annular core structure without losing the inherent safe characteristics (in the coolant depressurization accident, the fuel temperature does not exceed the temperature where the fuel defect begins.) This thermal power is two times higher than the inherent safe Pebble Bed Type High temperature Gas-cooled Reactor (MHTGR) designed in West Germany. From this result, it is foreseen that the ratio of the plant cost to the reactor power is reduced and the economy of the plant operation is improved. The reactor performances e.g. fuel burnup and fuel temperature are maintained in same level of the MHTGR. (author)

  12. The CMS forward calorimeter prototype design studies and Omega(c)0 search at E781 experiment at Fermilab

    Energy Technology Data Exchange (ETDEWEB)

    Ayan, Ahmet Sedat

    2004-05-01

    In the fit part, the Compact Muon Solenoid (CMS) forward calorimeter design studies are presented. The forward calorimeter consists of quartz fibers embedded in a steel absorber. Radiation damage studies of the quartz fiber and the absorber as well as the results of the first pre-production prototype PPP-I are presented. In the second part, the {Omega}{sub c}{sup 0}search studies at the SELEX (E781) experiment at FermiLab are presented. 107 {+-} 22 {Omega}{sub c}{sup 0} events are observed in three decay modes. The relative branching ratio ({Omega}{sub c}{sup 0} {yields} {Omega}{sup -}{pi}{sup -}{pi}{sup +}{pi}{sup +})/{Beta}({Omega}{sub c}{sup 0} {yields} {Omega}{sup -}{pi}{sup +}) is measured as 2.00 {+-} 0.45(stat) {+-} 0.32(sys).

  13. The design study of the JT-60SU device (No.7). The ECRF system of JT-60SU

    International Nuclear Information System (INIS)

    The ECRF system is composed of two sub-systems. The one of them is the ECR preionization and discharge cleaning sub-system which assists ramp up of plasma current during start-up and cleans up the first wall under high magnetic fields. The other is ECH heating sub-system which is used to heat plasma and drive plasma current efficiently for sustainment of high performance plasma stably in a steady-state. For the two sub-systems, the safety study in treatment of tritium was carried out in JT-60SU. The design study of the antenna system was also performed concerning on shielding radioactive rays, and the investigation of main component such as a gyrotron was done. It is found that the ECRF system can be fabricated at a technological view point. The results of conceptual examination of the ECRF system will be described in this report. (author)

  14. Design Studies of the Calorimeter Systems for the sPHENIX Experiment at RHIC and Future Upgrade Plans

    International Nuclear Information System (INIS)

    The PHENIX Experiment at RHIC is planning a series of major upgrades that will enable a comprehensive measurement of jets in relativistic heavy ion collisions, provide enhanced physics capabilities for studying nucleon-nucleus and polarized proton collisions, and allow a detailed study of electron-nucleus collisions at the Electron Ion Collider at Brookhaven (eRHIC). The first of these upgrades, sPHENIX, will be based on the former BaBar magnet and will include a hadronic calorimeter and new electromagnetic calorimeter that will cover ±1.1 units in pseudorapidity and 2π in azimuth in the central region, resulting in a factor of 6 increase in acceptance over the present PHENIX detector. The electromagnetic calorimeter will be a tungsten scintillating fiber design with a radiation length ∼ 7 mm and a Moliere radius ∼ 2 cm. It will have a total depth of ∼ 18 radiation lengths and an energy resolution ∼ 15%/√E. The hadronic calorimeter will consist of steel plates with scintillating tiles in between that are read out with wavelength shifting fibers, It will have a total depth of ∼ 5 interaction lengths and an energy resolution 100%/√E. Both calorimeters will use silicon photomultipliers as the readout sensor. Detailed design studies and Monte Carlo simulations for both calorimeters have been carried out and prototype detectors have been constructed and tested in a test beam at Fermilab in February 2014. This contribution describes these design studies for the sPHENIX experiment and its future upgrade plans at RHIC

  15. Design Studies of the Calorimeter Systems for the sPHENIX Experiment at RHIC and Future Upgrade Plans

    Science.gov (United States)

    Woody, C.; Kistenev, E.; PHENIX Collaboration

    2015-02-01

    The PHENIX Experiment at RHIC is planning a series of major upgrades that will enable a comprehensive measurement of jets in relativistic heavy ion collisions, provide enhanced physics capabilities for studying nucleon-nucleus and polarized proton collisions, and allow a detailed study of electron-nucleus collisions at the Electron Ion Collider at Brookhaven (eRHIC). The first of these upgrades, sPHENIX, will be based on the former BaBar magnet and will include a hadronic calorimeter and new electromagnetic calorimeter that will cover ±1.1 units in pseudorapidity and 2π in azimuth in the central region, resulting in a factor of 6 increase in acceptance over the present PHENIX detector. The electromagnetic calorimeter will be a tungsten scintillating fiber design with a radiation length ~ 7 mm and a Moliere radius ~ 2 cm. It will have a total depth of ~ 18 radiation lengths and an energy resolution ~ 15%/√E. The hadronic calorimeter will consist of steel plates with scintillating tiles in between that are read out with wavelength shifting fibers, It will have a total depth of ~ 5 interaction lengths and an energy resolution 100%/√E. Both calorimeters will use silicon photomultipliers as the readout sensor. Detailed design studies and Monte Carlo simulations for both calorimeters have been carried out and prototype detectors have been constructed and tested in a test beam at Fermilab in February 2014. This contribution describes these design studies for the sPHENIX experiment and its future upgrade plans at RHIC.

  16. BENCHPAR PROJECT. How to Incorporate ThermaI-Hydro-Mechanical Coupled Processes into Performance Assessments and Design Studies for Radioactive Waste Disposal in Geological Formations. Guidance Document

    Energy Technology Data Exchange (ETDEWEB)

    Stephansson, O. [Royal Inst. of Technology, Stockholm (Sweden). Engineering Geology; Hudson, J.A. [Rock Engineering Consultants, Welwyn Garden City (United Kingdom); Andersson, Johan [JA Streamflow AB, Aelvsjoe (Sweden)

    2005-02-15

    The objective of this Guidance Document is to provide advice on how to incorporate thermo-hydro-mechanical (THM) coupled processes into Performance Assessments (PAS) and design studies for radioactive waste disposal in geological formations to be experienced in a European context. The document has been generated by the EU research project BENCHPAR: Benchmark Tests and Guidance on Coupled Processes for Performance Assessment of Nuclear Waste Repositories. The document starts in Section 1 with an explanation of why numerical analyses incorporating THM mechanisms are required for radioactive waste studies and provides background material on the subject. Then, the THM processes and their interactions are explained in Section 2. Three case examples of THM numerical analysis are presented in Section 3 to illustrate the type of work that can be conducted to study the near-field, upscaling, and the far-field. For the three cases, there is discussion on the main findings, the relevance to a safety case, the relative importance of the different couplings, and the uncertainties involved. The importance and priority of the THM couplings are then summarized in Section 4. It is especially important to be able to technically audit the numerical analyses in order to establish that all the relevant variables, parameters and mechanisms have been included in the modelling and hence that the numerical model adequately represents the rock and engineering reality. Accordingly, recommended soft and hard auditing procedures are presented in Section 5. In this Guidance Document, we emphasize especially that the most important step in numerical modelling is not executing the calculations per se, but the earlier conceptualization of the problem regarding the dominant processes, the material properties and parameters, the engineering perturbations, and their mathematical presentations. The associated modelling component of addressing the uncertainties and estimating their influence on the

  17. BENCHPAR PROJECT. How to Incorporate ThermaI-Hydro-Mechanical Coupled Processes into Performance Assessments and Design Studies for Radioactive Waste Disposal in Geological Formations. Guidance Document

    International Nuclear Information System (INIS)

    The objective of this Guidance Document is to provide advice on how to incorporate thermo-hydro-mechanical (THM) coupled processes into Performance Assessments (PAS) and design studies for radioactive waste disposal in geological formations to be experienced in a European context. The document has been generated by the EU research project BENCHPAR: Benchmark Tests and Guidance on Coupled Processes for Performance Assessment of Nuclear Waste Repositories. The document starts in Section 1 with an explanation of why numerical analyses incorporating THM mechanisms are required for radioactive waste studies and provides background material on the subject. Then, the THM processes and their interactions are explained in Section 2. Three case examples of THM numerical analysis are presented in Section 3 to illustrate the type of work that can be conducted to study the near-field, upscaling, and the far-field. For the three cases, there is discussion on the main findings, the relevance to a safety case, the relative importance of the different couplings, and the uncertainties involved. The importance and priority of the THM couplings are then summarized in Section 4. It is especially important to be able to technically audit the numerical analyses in order to establish that all the relevant variables, parameters and mechanisms have been included in the modelling and hence that the numerical model adequately represents the rock and engineering reality. Accordingly, recommended soft and hard auditing procedures are presented in Section 5. In this Guidance Document, we emphasize especially that the most important step in numerical modelling is not executing the calculations per se, but the earlier conceptualization of the problem regarding the dominant processes, the material properties and parameters, the engineering perturbations, and their mathematical presentations. The associated modelling component of addressing the uncertainties and estimating their influence on the

  18. HIGH QUALITY ENVIRONMENTAL PRINCIPLES APPLIED TO THE ARCHITECTONIC DESIGN SELECTION PROCEDURE: THE NUTRE LAB CASE

    Directory of Open Access Journals (Sweden)

    Claudia Barroso Krause

    2012-06-01

    Full Text Available The need to produce more sustainable buildings has been influencing the design decisions all over the world. That’s why it is imperative, in Brazil, the development of strategies and method to aid the decision making during the design process, focused on high quality environmental. This paper presents a decision support tool based on the principles of sustainable construction developed by the Project, Architecture and Sustainability Research Group (GPAS of Federal University of Rio de Janeiro – Brazil. The methodology has been developed for the selection of a preliminary design of a laboratory to be built at Rio Technology Park at the University campus. The support provided by GPAS occurred in three stages: the elaboration of the Reference Guide for the competitors, the development of a methodology to evaluate the proposed solutions (based on environmental performance criteria and the assistance of the members of jury in the trial phase. The theoretical framework was based upon the concepts of the bioclimatic architecture, the procedures specified by the certification HQE® (Haute Qualité Environnementale and the method suggested by the ADDENDA® architecture office. The success of this experience points out the possibility to future application in similar cases.

  19. Design study of beam dynamics issues for 1 TeV next linear collider based upon the relativistic-klystron two-beam accelerator

    International Nuclear Information System (INIS)

    A design study has recently been conducted for exploring the feasibility of a relativistic-klystron two-beam accelerator (RK-TBA) system as a rf power source for a 1 TeV linear collider. The author present, in this paper, the beam dynamics part of this study. They have achieved in their design study acceptable transverse and longitudinal beam stability properties for the resulting high efficiency and low cost RK-TBA

  20. Conceptual design study of a superconducting spherical tokamak reactor with a self-consistent system analysis code

    International Nuclear Information System (INIS)

    In a spherical tokamak (ST) reactor, the radial build of toroidal field coil and the shield play a key role in determining the size of the reactor. For self-consistent determination of the reactor components and physics parameters, a system analysis code is coupled with a one-dimensional radiation transport code. A conceptual design study of a compact superconducting ST reactor with an aspect ratio of up to 2.0 is conducted and the optimum radial build is identified. It is shown that the use of an improved shielding material and high-temperature superconducting magnets with high critical current density opens up the possibility of a fusion power plant with compact size and small re-circulating power simultaneously at a low aspect ratio, and that by using an inboard neutron reflector instead of a breeding blanket, tritium self-sufficiency is possible with an outboard blanket only and thus a compact-sized all superconducting coil ST reactor is viable.

  1. Summary and evaluation of the conceptual design study of a potential early commercial MHD power plant (CSPEC)

    Science.gov (United States)

    Staiger, P. J.; Penko, P. F.

    1982-01-01

    The conceptual design study of a potential early commercial MHD power plant (CSPEC) is described and the results are summarized. Each of two contractors did a conceptual design of an approximtely 1000 MWe open-cycle MHD/steam plant with oxygen enriched combustion air preheated to an intermediate temperatue in a metallic heat exchanger. The contractors were close in their overall plant efficiency estimates but differed in their capital cost and cost of electricity estimates, primarily because of differences in balance-of-plant material, contingency, and operating and maintenance cost estimates. One contractor concluded that its MHD plant design compared favorably in cost of electricity with conventional coal-fired steam plants. The other contractor is making such a comparison as part of a follow-on study. Each contractor did a preliminary investigation of part-load performance and plant availability. The results of NASA studies investigating the effect of plant size and oxidizer preheat temperature on the performance of CSPEC-type MHD plants are also described. The efficiency of a 1000 MWe plant is about three points higher than of a 200 MWe plant. Preheating to 1600 F gives an efficiency about one and one-half points higher than preheating to 800 F for all plant sizes. For each plant size and preheat temperature there is an oxidizer enrichment level and MHD generator length that gives the highest plant efficiency.

  2. Simulations of 3D electromagnetic field and design study of SWS for millimeter tunneladder coupled-cavity TWT

    International Nuclear Information System (INIS)

    Simulations of electromagnetic field and design study of slow-wave structure (SWS) for millimeter tunneladder coupled-cavity TWT (travelling-wave tube) have been performed and cold-test parameters such as dispersion, interaction impedance and attenuation in this system are obtained by using 3D electromagnetic code CST-MWS and symmetric field of high frequency structure. For verification of mastering code, firstly, simulated are the dispersion characteristics parameters of a sample tube from Huges Co., the United States, which are completely consistent with those tested and theoretically calculated results published from Huges Co., and probably better. Furthermore, also using this code, cold-test parameters at Ka frequency range such as dispersion, interaction impedance and attenuation have been simulated, calculated and compared respectively for the tunneladder structures of linear coupled-cavity, single stagger tuning coupled-cavity and double stagger tuning coupled-cavity. It is concluded from these results that compared to the slow-wave system without stagger tuning coupled-cavity, pass bandwidth and interaction impedance of those with a single (double) stagger tuning coupled-cavity can be considerably improved

  3. Preconceptual design study for solidifying high-level waste: Appendices A, B and C West Valley Demonstration Project

    Energy Technology Data Exchange (ETDEWEB)

    Hill, O.F. (comp.)

    1981-04-01

    This report presents a preconceptual design study for processing radioactive high-level liquid waste presently stored in underground tanks at Western New York Nuclear Service Center (WNYNSC) near West Valley, New York, and for incorporating the radionculides in that waste into a solid. The high-level liquid waste accumulated from the operation of a chemical reprocessing plant by the Nuclear Fuel Services, Inc. from 1966 to 1972. The high-level liquid waste consists of approximately 560,000 gallons of alkaline waste from Purex process operations and 12,000 gallons of acidic (nitric acid) waste from one campaign of processing thoria fuels by a modified Thorex process (during this campaign thorium was left in the waste). The alkaline waste contains approximately 30 million curies and the acidic waste contains approximately 2.5 million curies. The reference process described in this report is concerned only with chemically processing the high-level liquid waste to remove radionuclides from the alkaline supernate and converting the radionuclide-containing nonsalt components in the waste into a borosilicate glass.

  4. A Core design study on the fuel displacement options for an effective transition between breakeven and TRU burning fast reactors

    International Nuclear Information System (INIS)

    A core design study to convert a breakeven core into a TRU burner is performed for a 600 MWe rated fast reactor. No change in the core and subassembly layouts is assumed, which only allows geometry variations within the fuel rods. Investigated alternatives are to use variable cladding thicknesses, smearing fraction adjustments and annular fuel rod concepts with a central liner of a variable diameter consisting of void, Zr, B4C, Al, W, etc. The variable cladding thickness concept could not be employed due to too high a clad inner wall temperature. A smearing fraction adjustment below a typical fraction of 75% leads to a moderate TRU burning and reduced sodium void worth, but to a relatively high burnup swing. Placing a central non-fuel rod with the fuel arranged in an annular ring affects the core performance and reactivity coefficients, depending on whether it is a moderator or an absorber. In general, candidate materials of high atomic numbers contribute to large positive sodium void worths, but enhanced negative expansion effects. Among the light elements, vanadium reveals a favourable performance with a comparable TRU burning and a reduced sodium void worth, suggesting this material can be regarded as a solid substitute for sodium. (authors)

  5. EDS coal liquefaction process development, Phase V. Engineering design study of an EDS Illinois bottoms fired hybrid boiler

    Energy Technology Data Exchange (ETDEWEB)

    None

    1984-04-01

    This interim report documents work carried out by Combustion Engineering, Inc. under a contract to Exxon Research and Engineering Company and was prepared by Combustion Engineering, Inc. This report is the second of two reports by Combustion Engineering, Inc. on the predevelopment phase of the Hybrid Boiler program and covers the results of an engineering design study of a Hybrid Boiler firing the vacuum distillation residue (vacuum bottoms) derived from processing Illinois No. 6 coal in the EDS Coal Liquefaction Process. The function of the Hybrid Boiler is to heat the coal slurry feed for an EDS coal liquefaction plant by a process coil in the convection section and to generate high pressure steam in the radiant section. The Hybrid Boiler design developed in this phase of the program is based on the results of a laboratory characterization program (reported in EDS Interim Report FE-2893-112), on Combustion Engineering, Inc.'s extensive experience as a designer and supplier of steam generating equipment, and on Exxon Research and Engineering Co.'s experience with the design and operation of process heaters.

  6. Recent laser- and heavy-ion-driven inertial fusion reactor design studies in the U.S

    International Nuclear Information System (INIS)

    Since the 1991 Osaka meeting on ICF drivers, work has been completed on several new reactor design studies in the United States. Two major studies were funded by the U.S. Department of Energy and were completed in 1992. W.J. Schafer Associates lead a design team to develop the heavy-ion-driven Osiris and the KrF-laser driven SOMBRERO power plant concepts. McDonnell Douglas Aerospace lead another DOE-funded design team in the Prometheus-L designs, driven by a heavy-ion accelerator and KrF laser, respectively. A third study was completed by Lawrence Livermore National Laboratory on the heavy-ion-driven HYLIFE-II design. All of these designs are evolutions of previous IFE reactor concepts and are part of the inertial fusion community's efforts to develop technically credible concepts with attractive environmental and safety features and competitive economics. This talk will compare and contrast the design features of the chambers (geometry, dimensions, first wall protection, breeding blanket, structural materials, etc.), power conversion, systems (coolants, heat transfer components, temperatures, efficiencies, etc.), and drivers (type, energy, beam propagation and focusing, etc.). The results of environmental, safety, and economics assessments will also be summarized -Abstract only-. (Author)

  7. Conceptual design study and evaluation of an advanced treatment process applying a submerged combustion technique for spent solvents

    International Nuclear Information System (INIS)

    An advanced treatment process based on a submerged combustion technique was proposed for spent solvents and the distillation residues containing transuranium (TRU) nuclides. A conceptual design study and the preliminary cost estimation of the treatment facility applying the process were conducted. Based on the results of the study, the process evaluation on the technical features, such as safety, volume reduction of TRU waste and economics was carried out. The key requirements for practical use were also summarized. It was shown that the process had the features as follows: the simplified treatment and solidification steps will not generate secondary aqueous wastes, the volume of TRU solid waste will be reduced less than one tenth of that of a reference technique (pyrolysis process), and the facility construction cost is less than 1 % of the total construction cost of a future large scale reprocessing plant. As for the low level wastes of calcium phosphate, it was shown that the further removal of β · γ nuclides with TRU nuclides from the wastes would be required for the safety in interim storage and transportation and for the load of shielding. (author)

  8. Preliminary Systems Design Study assessment report. Volume 6, Waste Isolation Pilot Plant and transportation package acceptable concepts

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1992-01-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques for the remediation of hazardous and transuranic waste stored at Radioactive Waste Management Complex`s Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. This volume contains introduction section containing a brief SDS background and lists the general assumptions and considerations used during the development of the system concepts. The introduction section is followed by sections describing two system concepts that produce a waste form in compliance with the Waste Isolation Pilot Plant (WIPP) Waste Acceptance Criteria (WAC) and transportation package (TRAMPAC) requirements. This system concept category is referred to as Waste Form 4, ``WIPP and TRAMPAC Acceptable.`` The following two system concepts are under this category: Sort, Treat, and Repackage System (4-BE-2); Volume Reduction and Packaging System (4-BE-4).

  9. General conceptual design study for a high level radioactive waste repository in a granite formation. Volume 1

    International Nuclear Information System (INIS)

    The object of the general conceptual design study for a repository for disposal of radioactive waste in a granite formation is to ensure that the technology available in 1980 is suitable for the construction of such a repository. The recommended techniques and equipment are suitable for construction of a repository, located at a depth of 1000 metres in a granite batholith, with a capacity of 30,000 AVM canisters, cooled for 30 years on the surface, at a rate of 1,000 canisters per year. The structure consists of six access shafts of 4 and 5 metres diameter, drilled from the surface by the big-hole method, serving a network of 82 parallel galleries, 2,300 metres long, mined by conventional blasting. Shafts 100 metres deep are drilled in the floor of each gallery (74 shafts per gallery), each shaft accommodating five canisters. This represents an aggregate gallery length of 200 kilometres and an aggregate shaft length of 600 kilometres. The cost of the operation is 1.3% of the cost (ex-works) of the energy produced by the power stations generating the waste. Construction, operation and final abandonment will take 81 years. The sensitivity study of the design showed, by varying certain parameters, that location of the repository at a depth of 500 metres is not recommended and that the area covered by the repository of 4 km2 is halved if the canisters are first cooled for 100 years

  10. Minimally invasive strabismus surgery versus paralimbal approach: A randomized, parallel design study is minimally invasive strabismus surgery worth the effort?

    Directory of Open Access Journals (Sweden)

    Richa Sharma

    2014-01-01

    Full Text Available Introduction : Minimal access surgery is common in all fields of medicine. We compared a new minimally invasive strabismus surgery (MISS approach with a standard paralimbal strabismus surgery (SPSS approach in terms of post-operative course. Materials and Methods: This parallel design study was done on 28 eyes of 14 patients, in which one eye was randomized to MISS and the other to SPSS. MISS was performed by giving two conjunctival incisions parallel to the horizontal rectus muscles; performing recession or resection below the conjunctival strip so obtained. We compared post-operative redness, congestion, chemosis, foreign body sensation (FBS, and drop intolerance (DI on a graded scale of 0 to 3 on post-operative day 1, at 2-3 weeks, and 6 weeks. In addition, all scores were added to obtain a total inflammatory score (TIS. Statistical Analysis: Inflammatory scores were analyzed using Wilcoxon′s signed rank test. Results: On the first post-operative day, only FBS (P = 0.01 and TIS (P = 0.04 showed significant difference favoring MISS. At 2-3 weeks, redness (P = 0.04, congestion (P = 0.04, FBS (P = 0.02, and TIS (P = 0.04 were significantly less in MISS eye. At 6 weeks, only redness (P = 0.04 and TIS (P = 0.05 were significantly less. Conclusion: MISS is more comfortable in the immediate post-operative period and provides better cosmesis in the intermediate period.

  11. Design study of a wide-angle infrared thermography and visible observation diagnostic on JT-60SA

    International Nuclear Information System (INIS)

    Design study of a wide-angle infrared (IR) thermography (surface temperature measurement) and visible observation diagnostics for JT-60SA are reported. The new design offers an optical solution without a “blind spot” which is one of the advantages. In order to image a large section inside the vacuum vessel (both in poloidal and toroidal directions), the optical system of endoscope is to provide a wide-angle view in the IR and visible wavelength ranges. The estimated IR optical spatial resolution is approximately 2 cm at a distance of 7.6 m from the front optics with a pupil diameter of 4 mm. For a surface temperature measurement it would be larger (∼4 cm for a surface temperature error less than 5%). The optics of this system can be divided into three parts: (1) a mirror based optical head (two set of spherical mirrors plus two flat mirrors) that produces an intermediate image, (2) a Cassegrain telescope system, and (3) a relay group of lenses, being adapted to the two kinds of detectors for IR and visible observations

  12. Beneficial effect of tagatose consumption on postprandial hyperglycemia in Koreans: a double-blind crossover designed study.

    Science.gov (United States)

    Kwak, Jung Hyun; Kim, Min Sun; Lee, Jin Hee; Yang, Yoon Jung; Lee, Ki Ho; Kim, Oh Yoen; Lee, Jong Ho

    2013-08-01

    The present study determined the effect of tagatose supplementation on postprandial hyperglycemia in normal (n = 54) and hyperglycemic subjects [n = 40, impaired fasting glucose (IFG) and newly diagnosed type 2 diabetes]. In a double-blind crossover designed study, study subjects were randomly assigned to consume a sucralose-erythritol drink (the placebo) or a tagatose-containing drink (the test) with a seven-day interval. Finally, 85 subjects completed the study (normal, n = 52; hyperglycemic, n = 33). Blood samples were collected at 0, 30, 60 and 120 min after ingestion and analyzed for fasting and postprandial levels of glucose, insulin and C-peptide. Basic anthropometric parameters and lipid files were also measured. Hyperglycemic subjects were basically older and heavier, and showed higher levels of triglyceride, total- and LDL-cholesterols and apolipoprotein AI and B compared with normal subjects. After consuming the tagatose (5 g)-containing drink, hyperglycemic subjects had a significant reduction in serum levels of glucose at 120 min (p = 0.019) and glucose area under the curve (AUC) (p = 0.017), however these were not observed in normal subjects. When ages were matched between the two groups, the glucose response patterns were shown to be similar. Additionally, normal subjects who received a high-dose of tagatose-containing drinks (10 g) showed significantly lower levels of insulin at 30 min (p = 0.004) and 60 min (p = 0.011), insulin AUC (p = 0.009), and C-peptide at 30 min (p = 0.004), 60 min (p = 0.011) and C-peptide AUC (p = 0.023). In conclusion, a single dietary supplement in the form of a tagatose-containing drink may be beneficial for controlling postprandial glycemic response in Koreans. PMID:23760573

  13. Wire marking results in a small but significant reduction in avian mortality at power lines: a BACI designed study.

    Directory of Open Access Journals (Sweden)

    Rafael Barrientos

    Full Text Available BACKGROUND: Collision with electric power lines is a conservation problem for many bird species. Although the implementation of flight diverters is rapidly increasing, few well-designed studies supporting the effectiveness of this costly conservation measure have been published. METHODOLOGY/PRINCIPAL FINDINGS: We provide information on the largest worldwide marking experiment to date, including carcass searches at 35 (15 experimental, 20 control power lines totalling 72.5 km, at both transmission (220 kV and distribution (15 kV-45 kV lines. We found carcasses of 45 species, 19 of conservation concern. Numbers of carcasses found were corrected to account for carcass losses due to removal by scavengers or being overlooked by researchers, resulting in an estimated collision rate of 8.2 collisions per km per month. We observed a small (9.6% but significant decrease in the number of casualties after line marking compared to before line marking in experimental lines. This was not observed in control lines. We found no influence of either marker size (large vs. small spirals, sample of distribution lines only or power line type (transmission vs. distribution, sample of large spirals only on the collision rate when we analyzed all species together. However, great bustard mortality was slightly lower when lines were marked with large spirals and in transmission lines after marking. CONCLUSIONS: Our results confirm the overall effectiveness of wire marking as a way to reduce, but not eliminate, bird collisions with power lines. If raw field data are not corrected by carcass losses due to scavengers and missed observations, findings may be biased. The high cost of this conservation measure suggests a need for more studies to improve its application, including wire marking with non-visual devices. Our findings suggest that different species may respond differently to marking, implying that species-specific patterns should be explored, at least for species

  14. Design study of a fast spectrum zero-power reactor dedicated to source driven sub-critical experiments

    Energy Technology Data Exchange (ETDEWEB)

    Mercatali, L.; Serikov, A. [Forschungszentrum Karlsruhe, Institute for Neutron Physics and Reactor Technology, P.O. Box 3640, 76021 Karlsruhe (Germany); Baeten, P.; Uyttenhove, W. [SCK-CEN, Boeretang 200, B-2400 Mol (Belgium); Lafuente, A. [Univerisdad Politecnica de Madrid, 28006 Madrid (Spain); Teles, P. [Instituto Tecnologico e Nuclear, EN 10, 2680-953 Sacavem (Portugal)

    2010-09-15

    In the framework of the European P and T program (IFP6-EUROTRANS), the Generation of Uninterrupted Intense NEutrons pulses at the lead VEnus REactor (GUINEVERE) project consists of an Accelerator Driven System (ADS) that is composed by a fast lead simulated-cooled reactor operated in sub-critical conditions, coupled with an updated version of the GENEPI neutron generator previously used for the MUSE experiments. The GUINEVERE facility aims at developing and improving different techniques for the reactivity monitoring of sub-critical ADS's. As such, the GUINEVERE project will comprise a series of major experiments that will be performed in the near future. The GUINEVERE facility will be located at the VENUS light water moderated research reactor at the SCK-CEN site of Mol (Belgium), which needs to be modified in order to accommodate a completely different and new type of core. A series of constraints were taken into account in the technical design of the GUINEVERE core, in order to properly conjugate the technical feasibility of this facility and the necessity to comply with the envisioned experimental program and its associated scientific outcome. The complete design study of the GUINEVERE core is the subject of this paper. The final design of the fuel assemblies, safety and control rods is provided. Also, the critical core configuration, to be used as reference for absolute reactivity measurements, is presented along with its associated reactor physics parameters, calculated by means of Monte Carlo methodologies. Finally, for licensing purposes, the GUINEVERE facility must satisfy the required nuclear safety criteria of the Belgian safety authorities, and in this paper, an overview of the safety analysis that has been performed with regard to the core physics, thermal assessment and shielding issues is also provided. (author)

  15. Within-leaf allometric relationships of mature forests in different bioclimatic zones vary with plant functional types%不同气候带间成熟林植物叶性状间异速生长关系随功能型的变异

    Institute of Scientific and Technical Information of China (English)

    祝介东; 孟婷婷; 倪健; 苏宏新; 谢宗强; 张守仁; 郑元润; 肖春旺

    2011-01-01

    为研究不同生物气候带内植物叶片大小与叶柄干重间的异速生长关系,探讨不同植物功能型对叶内异速生长关系的效应,在黑龙江呼中、吉林长白山、北京东灵山、浙江古田山、湖北神农架和四川都江堰6个地区,选择典型地带性成熟林进行主要木本植物的叶片和叶柄性状的测定与统计分析。结果表明:不同功能型和气候带植物叶片干重、面积、体积均与叶柄干重之间存在着显著的异速生长关系,共同斜率分别为0.82、0.70和0.80,均显著小于1.0。在相同叶柄干重下,灌木较乔木支持更大的叶片体积,但它们支持的叶片干重与叶片面积无显著差异,常绿植物在给定叶柄干重下较落叶植物支持更高的叶片干重与体积,但其支持的叶片面积小于落叶植物,除神农架地区外,在给定叶柄干重下,亚热带的古田山、都江堰地区的植物较温带地区的植物支持更大的叶片干重、面积与体积,而亚热带神农架地区的植物叶柄支持的叶片大小(面积、体积、干重)与温带地区相近。结果表明,叶柄限制了叶片的不断增大(包括面积、体积和干重),叶片和叶柄之间的异速生长关系受功能型、气候带及生境条件的影响。%Aims Our objectives are to determine allometric relationships between petiole mass and lamina mass, area, and volume in different bioclimatic zones and to detect the effect of plant functional types on the relationships. Methods Typical and zonal mature forests were selected from boreal Huzhong, temperate Changbai Mountain, warm-temperate Dongling Mountain, subtropical Gutian Mountain, Shennongjia and Dujiangyan in China, and one 1 hm2 plot was investigated at each site. Traits of lamina and petiole of the dominant woody species were measured in August 2009. The relationship between lamina and lamina support was analyzed by the Standardized Major Axis estimation

  16. Proposal for the award of a contract, without competitive tendering, for a design study for a 30 GHz, high peak power gyro-klystron

    CERN Document Server

    2001-01-01

    This document concerns the award of a contract for a design study for a 30 GHz, high peak power gyro-klystron. The Finance Committee is invited to agree to the negotiation of a contract, without competitive tendering, with COMMUNICATIONS & POWER INDUSTRIES (USA), for a design study for a 30 GHz, high peak power gyro-klystron for a total amount of 198 505 USD (328 278 Swiss francs), not subject to revision. COMMUNICATIONS & POWER INDUSTRIES is the only firm which has experience with such devices. The firm has indicated the following distribution by country of the contract value covered by this adjudication proposal: USA - 100%.

  17. Optimal control model predictions of system performance and attention allocation and their experimental validation in a display design study

    Science.gov (United States)

    Johannsen, G.; Govindaraj, T.

    1980-01-01

    The influence of different types of predictor displays in a longitudinal vertical takeoff and landing (VTOL) hover task is analyzed in a theoretical study. Several cases with differing amounts of predictive and rate information are compared. The optimal control model of the human operator is used to estimate human and system performance in terms of root-mean-square (rms) values and to compute optimized attention allocation. The only part of the model which is varied to predict these data is the observation matrix. Typical cases are selected for a subsequent experimental validation. The rms values as well as eye-movement data are recorded. The results agree favorably with those of the theoretical study in terms of relative differences. Better matching is achieved by revised model input data.

  18. The three visions of design in the field of Cognitive Design Studies. Introduction to issue 2 of Collection, on "Art + Design & Psychology"

    OpenAIRE

    Visser, Willemien

    2010-01-01

    There is a French version of this paper: W. Visser (2010). Les trois visions du design dans le champ des Cognitive Design Studies. Introduction au numéro 2 de Collection : " Art + Design & Psychologie ". Collection [version française](2), 7-9. see http://www.parsons-paris.com/pages/detail/624/Collection-2

  19. High-intensity low energy beam transport design studies for the new injector linac of the UNILAC

    International Nuclear Information System (INIS)

    GSI will replace the Wideroe prestripper linac by an RFQ and IH-type accelerator presently under construction. The new prestripper linac should deliver beam intensities to fill up the heavy ion synchrotron SIS to the space charge limits for all ions. In case of uranium the new injector has to deliver 15 emA U4+. One of the two existing ion-source terminals has already been rebuilt for installation of the high current sources of CHORDIS- and MEVVA-type. Therefore, investigations of high-current beam transport have been made in the existing LEBT. For that, additional beam diagnostic elements have been installed: beam transformers, emittance measurement devices, residual gas ion spectrometer. The measured beam properties, e.g. transverse emittance, degree of space charge compensation, support the design of the future LEBT. According to the various requirements two layouts of the new LEBT have been studied so far. (author)

  20. Sustainable design in hot-humid climate: A case study in Karatu, Tanzania

    NARCIS (Netherlands)

    Rota, M.

    2013-01-01

    This "designers' manual" is made during the TIDO-course AR0531 Smart & Bioclimatic Design. The contrast between regionalism and globalism continues to dominate the debate in architecture. Building design has to reflect the regional character, while often architects are more concerned with fashionab

  1. INSTRUCTIONAL THEORY FOR LANGUAGE LESSONS. A Design Study to Validate the Communities of Learners Concept in the Language Curriculum

    Directory of Open Access Journals (Sweden)

    ANNE TOORENAAR

    2011-12-01

    Full Text Available Since the Lisbon Summit in 2000, reducing school dropout rates has a high priority in Europe, especially in pre-vocational tracks in secondary education. One policy issue is improving the match be-tween pre-vocational secondary and senior secondary vocational education and allows a stronger focus on practical work in vocational education. Therefore, more and more schools for secondary pre-vocational education in the Netherlands set out a specific language education policy relating the language arts cur-riculum to the vocational curriculum. One assumes that students will be more motivated for language lessons when they are engaged in rich contexts, in meaningful language activities which they experience as relevant, since it serves a clear communicative purpose.To guide this process of curriculum integration we set out an instructional theory for language education in the setting of pre-vocational education. In this paper we present four course design parameters that constitute our interpretation of a community of learners for secondary pre- vocational L1-learning: 1 language learning as a meaningful activity; 2 language learning as a reflective activity; 3 language learning as a shared activity and 4 language learning as a focus on transferable learning outcomes. To check explore the practicality and theoretical value, we set up a design experiment as a collaborative enterprise of teachers and researchers, in which these parameters guided the joint enterprise. We con-fronted the theoretical framework with the analysis of a single case study, the design experiment, to elab-orate and validate this set of four design parameters. Therefore, we operated at three curriculum represen-tations: the (1 intended; (2 implemented; and (3 perceived curriculum. Discriminating these three rep-resentations served as data to review and revise the designed lessons as we ran them in two classes, as well as to adjust and refine the conceptual framework. The results

  2. Energy efficiency of buildings with a solar space : two case studies from Anatolian plateau

    Energy Technology Data Exchange (ETDEWEB)

    Elias-Ozkan, S.T.; Summers, F.; Taner, O. [Middle East Technical Univ., Ankara (Turkey). Dept. of Architecture

    2009-07-01

    This paper reported on a study that demonstrated the benefits of adding south facing solar spaces in buildings on the Anatolian Plateau in Turkey in order to lower the annual heating loads. This semi-arid upland region of Central Turkey is characterized by long severe winters and hot, dry summers. Two case studies were presented. One was an experimental hollow-brick office building on the edge of the capital city of Ankara. The other was a mud-brick eco-center building in the Village of Sahmurath. The thermal behaviour of the 2 solar buildings was analyzed by evaluating the real-time temperature and humidity readings obtained from data loggers. The purpose of the study was to promote energy efficient bioclimatic architecture to provide higher standards of living in villages, with the anticipation that this may contribute a low carbon high growth rural economy and attract people to rural areas. The office building has a glazed south-facing facade with adjustable openings. Materials were selected to maximize energy efficiency and reduce energy consumption. The mud-brick building was designed to use passive solar heating and to harness solar energy for food preservation with small-scale village production units. The study showed that a solar space can be influential in lowering the annual heating loads of buildings. Adding solar spaces to both buildings reduced the annual heating loads by almost 10 per cent. Additionally, the solar space could be used for drying fruit and vegetables under hygienic conditions and for longer periods than the traditional way of drying food out in the open. The solar space proved to be important to the sustenance of villagers since they were able to use the dried fruit and vegetables during winter months. 7 refs., 7 figs.

  3. Design studies on staffing requirements for the new generation nuclear power units of WWER-640 and BN-800 reactor types

    International Nuclear Information System (INIS)

    framework of agreement with SPB AEP, VNIIAES determined manpower (man-hours) of maintenance and repair works and gave recommendations on the structure of NPP management and number of repair personnel and personnel which should be involved for the repair of 3rd category components and comprehensive inspection of the reactor in case of total unloading of the core. Also, experience gained in designing of Loviisa-1 and Loviisa-2 NPP for Finland (in cooperation with IVO company) assuming shopless management structure and components repair made by the involved companies, was taken into account. As a result of these efforts, the concept of staffing of WWER-640 reactor NPP was developed and approved. This concept was based on the following points: repair of the 1st category components (routine repair) is carried out by the NPP repair personnel; - repair works on 2nd category (medium) and 3rd category (capital) components are carried out by the manufacturers under agreement with the NPP; - repair works mentioned in the previous point are fulfilled by ''ATOMENERGOREMONT'' (in the restricted access areas) or by ''ENERGOREMONT'' local company of the NPP region; - incoming inspection was adopted for the components delivered to the NPP. The suppliers are informed on their obligation to eliminate all defects revealed at the stage of the incoming inspection (either on the NPP site or in the manufacturer's). For instance, hydraulic lock of Loviisa NPP was returned to Leningrad hydromechanical works for repair; - applications for the component improvement to meet new safety standards include requirements on the components quality and provision of diagnostics means allowing repair works to be fulfilled with respect to the current component conditions; - according to the new General safety requirements OPB-88/97, components of safety related systems of 1H, 2H and 3H grades are monitored by the Atomic Safety Authority of Russia, quality assurance program being provided; - shopless management

  4. Case law

    International Nuclear Information System (INIS)

    This section treats of the two following case laws: Slovak Republic: Further developments in cases related to the challenge by Greenpeace Slovakia to the Mochovce nuclear power plant; United States: Judgment of the Nuclear Regulatory Commission denying requests from petitioners to suspend final reactor licensing decisions pending the issuance of a final determination of reasonable assurance of permanent disposal of spent fuel

  5. Clinical cases

    International Nuclear Information System (INIS)

    This presentation is about clinical cases and the contribution of the PET - CT Fag application in the diagnosis and treatment of different types of cancer. The cases presented were: neck diseases, epidermoid carcinoma, liver damage and metastasize, lymphoma, thrombosis, colonic cancer and lung disease

  6. Case Studies

    International Nuclear Information System (INIS)

    Proven options available to Sri Lanka for large scale electricity generation in the future are coal-fired thermal, oil-fired thermal and Nuclear. Four case studies for groups participated are indicated. Case study for group 1 is comparison of the three options by taking into consideration the capital and recurrent expenditure involved. Environmental effects of the three options are also given. Case study for group 2 is economic comparison of three renewable energy based power generation system. Case study for group 3 is based on energy conservation, efficiency, improvement and demand management. Assuming that a continuous saving of 20 MW of demand from 1996 onwards is effective two projects are suggested to achieve this result. Case study for group 4 is a feasibility study for hydro power development of the Kukule Ganga (river) in Sri Lanka. Participants are required to evaluate one of the three optional development concepts which are technically feasible

  7. Design study of wind turbines 50 kW to 3000 kW for electric utility applications. Volume 3: Supplementary design and analysis tasks

    Science.gov (United States)

    1976-01-01

    Additional design and analysis data are provided to supplement the results of the two parallel design study efforts. The key results of the three supplemental tasks investigated are: (1) The velocity duration profile has a significant effect in determining the optimum wind turbine design parameters and the energy generation cost. (2) Modest increases in capacity factor can be achieved with small increases in energy generation costs and capital costs. (3) Reinforced concrete towers that are esthetically attractive can be designed and built at a cost comparable to those for steel truss towers. The approach used, method of analysis, assumptions made, design requirements, and the results for each task are discussed in detail.

  8. Preliminary Systems Design Study assessment report. [Evaluation of using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1991-11-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept.

  9. Preliminary systems design study assessment report. [Evaluation of using specific technologies and system concepts for testing the buried waste and the surrounding contaminated soil

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L. (EG and G Idaho, Inc., Idaho Falls, ID (United States)); Feizollahi, F. (Bechtel National, Inc., San Francisco, CA (United States)); Del Signore, J.C. (Ebasco Environmental, Richland, WA (United States))

    1991-09-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept.

  10. In search of better energy performance in the Portuguese buildings—The case of the Portuguese regulation

    International Nuclear Information System (INIS)

    The Energy Performance of Buildings Directive (EPBD) is an important European policy tool to improve energy performance of buildings and has been applied in 27 countries with specific adjustments. The aim of this paper is to analyze the application of the Portuguese energy certification system and regulation to the residential sector using a case type, whilst considering a set of alternative and complementary solutions involving the regulation values for the envelope, interior and exterior thermal insulation, lower air renovation ratio, light colored exterior walls, better glazing system, shading elements and a Trombe Wall. In order to understand the role and the importance of bioclimatic measures in the Portuguese application of the EPBD, a comparison with the Passivhaus Norm applied to warm countries in Europe will be made. Due to the diversity of the Portuguese climate, three different climate regions were considered. Finally, we will discuss what new measures should be added to the Portuguese regulation, so that the proposed recast of the Directive might be transformed into a more effective tool in the search for better energy performance, passive house buildings and sustainable constructions. - Highlights: ► We have analyzed the Portuguese residential application of the EPBD. ► The analysis was based on a case-study building located in 3 climatic zones. ► We conducted a comparative study between the RCCTE demands and the Passivhaus ones. ► The energy demand was improved, introducing different measures by climatic zone. ► To improve buildings performance, the Regulation should consider more passive demands.

  11. Case - Case-Law - Law

    DEFF Research Database (Denmark)

    Sadl, Urska

    2013-01-01

    Reasoning of the Court of Justice of the European Union – Constr uction of arguments in the case-law of the Court – Citation technique – The use of formulas to transform case-law into ‘law’ – ‘Formulaic style’ – European citizenship as a fundamental status – Ruiz Zambrano – Reasoning from...

  12. Preliminary Systems Design Study assessment report. [Evaluation of using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1992-01-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. This volume of the Systems Design Study contain four Appendixes that were part of the study. Appendix A is an EG G Idaho, Inc., report that represents a review and compilation of previous reports describing the wastes and quantities disposed in the Subsurface Disposal Area of the Idaho National Engineering Laboratory. Appendix B contains the process flowsheets considered in this study, but not selected for detailed analysis. Appendix C is a historical tabulation of radioactive waste incinerators. Appendix D lists Department of Energy facilities where cementation stabilization systems have been used.

  13. Letter report: Pre-conceptual design study for a pilot-scale Non-Radioactive Low-Level Waste Vitrification Facility

    International Nuclear Information System (INIS)

    This report presents a pre-conceptual design study for a Non-Radioactive Low-Level Waste, Pilot-Scale Vitrification System. This pilot plant would support the development of a full-scale LLW Vitrification Facility and would ensure that the full-scale facility can meet its programmatic objectives. Use of the pilot facility will allow verification of process flowsheets, provide data for ensuring product quality, assist in scaling to full scale, and support full-scale start-up. The facility will vitrify simulated non-radioactive LLW in a manner functionally prototypic to the full-scale facility. This pre-conceptual design study does not fully define the LLW Pilot-Scale Vitrification System; rather, it estimates the funding required to build such a facility. This study includes identifying all equipment necessary. to prepare feed, deliver it into the melter, convert the feed to glass, prepare emissions for atmospheric release, and discharge and handle the glass. The conceived pilot facility includes support services and a structure to contain process equipment

  14. Aladdin upgrade design study: shielding

    International Nuclear Information System (INIS)

    The object of this shielding is to examine all aspects of Aladdin operation to ensure that adequate shielding is provided to meet the design objectives. To do this, we will look at shielding necessary for radiation produced during the injection process, during normal loss of the stored beam and during accidental loss of the stored beam. It will therefore be necessary to specify shielding not only at the ring, but also along the injection line and the optical beam lines. We will also give special attention to the occupation of the accelerator Vault during injection as this may be a desirable design option. In effect, two shielding plans will be presented, permitting estimates of cost and space requirements for both

  15. TLEP design study forges ahead

    CERN Multimedia

    Alain Blondel & Mike Koratzinos

    2013-01-01

    As the Future Circular Collider (FCC) study is launched, one of its component parts, TLEP, enjoys a successful workshop at CERN. The FCC study looks at all options for a future circular collider with the emphasis on a hadron machine with TLEP as a possible intermediate step.   The poster of the sixth TLEP workshop that took place at CERN. Japanese artist Kazuya Akimoto kindly agreed to the use of one of his works as the basis for the poster’s backdrop. October 16 to 18 saw a three-day workshop on TLEP, the sixth in the series. The workshop took place at CERN and was well attended, informative and stimulating. To name just one of the influential people present, Herwig Schopper, ex-Director General of CERN and instrumental in the approval, construction and success of LEP, was among the participants. But what exactly is TLEP? The name was, somehow serendipitously, coined from future lepton collider option studies and stands for triple-LEP, a machine three times the size of LEP. But th...

  16. Advances on ELIC Design Studies

    OpenAIRE

    Bogacz, S.

    2008-01-01

    A conceptual design of a ring-ring electron-ion collider based on CEBAF with a center-of-mass energy up to 90 GeV at luminosity up to 1035 cm-2s-1 has been proposed at JLab to fulfil science requirements. Here, we summarize design progress including collider ring and interaction region optics with chromatic aberration compensation. Electron polarization in the Figure-8 ring, stacking of ion beams in an accumulator-cooler ring, beam-beam simulations and a faster kicker for the circulator elect...

  17. A design study of VOR

    DEFF Research Database (Denmark)

    Deen, P. P.; Vickery, Anette; Andersen, K. H.;

    2015-01-01

    VOR, the versatile optimal resolution chopper spectrometer, is designed to probe dynamic phenomena that are currently inaccessible for inelastic neutron scattering due to flux limitations. VOR is a short instrument by the standards of the European Spallation Source (ESS), 30.2m moderator to sample...... impossible both on a long chopper spectrometer at the ESS and with instruments at short pulsed sources. In comparison to current day chopper spectrometers, VOR can offer an order of magnitude improvement in flux for equivalent energy resolutions, ΔE/E = 1-3%. Further relaxing the energy resolution enables...... VOR to gain an extra order of magnitude in flux. In addition, VOR has been optimised for repetition rate multiplication (RRM) and is therefore able to measure, in a single ESS period, 6-14 incident wavelengths, across a wavelength band of 9 Å with a novel chopper configuration that transmits all...

  18. Design studies of superconducting generators

    International Nuclear Information System (INIS)

    A study of superconducting, central-station turbine-generators of 300 and 1200 MVA rating is reported. A unique construction concept is used for the superconducting field winding. The goal of this construction is to ensure that the winding can be energized to the current and flux density predicted by the superconductor short-sample data, without the ''training'' instabilities frequently encountered in large coils. The remainder of the rotor components includes an aluminum radiation shield and a compound, steel-aluminum electromagnetic shield, designed to withstand short circuit electromagnetic forces. The study was focused on generator model configurations which were proportioned to have a low transient reactance, approximately 0.2 per unit. The critical clearing times calculated were comparable to conventional units, the low reactance offsetting an inherently lower rotor inertia. These configurations are estimated to have about half the size and weight, and about half the losses of conventional units of the same rating. Transient characteristics are described, including the effect of the rotor shielding configuration on rotor damping. 8 refs

  19. HTS Insert Magnet Design Study

    CERN Document Server

    Devaux, M; Fleiter, J; Fazilleau, P; Lécrevisse, T; Pes, C; Rey, J-M; Rifflet, J-M; Sorbi, M; Stenvall, A; Tixador, P; Volpini, G

    2011-01-01

    Future accelerator magnets will need to reach higher field in the range of 20 T. This field level is very difficult to reach using only Low Temperature Superconductor materials whereas High Temperature Superconductors (HTS) provide interesting opportunities. High current densities and stress levels are needed to design such magnets. YBCO superconductor indeed carries large current densities under high magnetic field and provides good mechanical properties especially when produced using the IBAD approach. The HFM EUCARD program studies the design and the realization of an HTS insert of 6 T inside a Nb3Sn dipole of 13T at 4.2 K. In the2HTS insert, engineering current densities higher than 250 MA/m under 19 T are required to fulfill the specifications. The stress level is also very severe. YBCO IBAD tapes theoretically meet these challenges from presented measurements. The insert protection is also a critical because HTS materials show low quench propagation velocities and the coupling with the Nb3Sn magnet make...

  20. Advances on ELIC Design Studies

    Energy Technology Data Exchange (ETDEWEB)

    Bogacz, S. Alex; Bogacz, S.; Chevtsov, P.; Derbenev, Ya.; Evtushenko, P.; Krafft, G.; Hutton, A.; Li, R.; Merminga, L.; Musson, J.; Yunn, B.; Zhang, Y.; Sayed, H.; Qiang, J.

    2008-06-16

    A conceptual design of a ring-ring electron-ion collider based on CEBAF with a center-of-mass energy up to 90 GeV at luminosity up to 1035 cm-2s-1 has been proposed at JLab to fulfil science requirements. Here, we summarize design progress including collider ring and interaction region optics with chromatic aberration compensation. Electron polarization in the Figure-8 ring, stacking of ion beams in an accumulator-cooler ring, beam-beam simulations and a faster kicker for the circulator electron cooler ring are also discussed.

  1. Advances on ELIC Design Studies

    International Nuclear Information System (INIS)

    A conceptual design of a ring-ring electron-ion collider based on CEBAF with a center-of-mass energy up to 90 GeV at luminosity up to 1035 cm-2s-1 has been proposed at JLab to fulfill science requirements. Here, we summarize design progress including collider ring and interaction region optics with chromatic aberration compensation. Electron polarization in the Figure-8 ring, stacking of ion beams in an accumulator-cooler ring, beam-beam simulations and a faster kicker for the circulator electron cooler ring are also discussed

  2. AEROSOL PARTICLE COLLECTOR DESIGN STUDY

    Energy Technology Data Exchange (ETDEWEB)

    Lee, S; Richard Dimenna, R

    2007-09-27

    A computational evaluation of a particle collector design was performed to evaluate the behavior of aerosol particles in a fast flowing gas stream. The objective of the work was to improve the collection efficiency of the device while maintaining a minimum specified air throughput, nominal collector size, and minimal power requirements. The impact of a range of parameters was considered subject to constraints on gas flow rate, overall collector dimensions, and power limitations. Potential improvements were identified, some of which have already been implemented. Other more complex changes were identified and are described here for further consideration. In addition, fruitful areas for further study are proposed.

  3. LEBT design studies for ESS

    International Nuclear Information System (INIS)

    For new applications of accelerator physics like ESS, high perveance ion have to be transported from the ion source to the first accelerator. The requirements for such a Low Energy Beam Transport (LEBT) are high transmission and low emittance growth. The transport properties of the section will be influenced strongly by the space charge of the beam. This can not be avoided in an electrostatic LEBT and defines a limit of transportable beam current. It also increases the beam diameter drastically and therefore emittance growth due to higher aberrations occurs. In opposite magnetic LEBT sections (i.g. with solenoids) where the space charge can be compensated by particles of opposite sign avoid this problems. The compensation particles are usually produced by interaction of beam ions and residual gas atoms. In absence of external electric fields they are trapped in the potential well of the beam itself and reduce the net charge density. In spite of the fact that space charge compensated beam transport is used quite often, the theoretical models do not allow precise forecasts of the transport properties and the emittance growth. (author) 10 figs., 9 refs

  4. A Mobile Irradiator Design Study

    International Nuclear Information System (INIS)

    The need for data on the technical and economic feasibility of commercial potato irradiation using Cobalt-60 gamma rays, led to a design and cost study of a mobile irradiator. Investigation of handling and storage of potatoes in major growing areas in Canada and the United States showed that the irradiator should process at least 6,000 lbs. (2,700 kilos) per hour in bulk or in 100 lb. (45 kilo) bags. Tests on irradiated potatoes indicated that a dose of 8,000 rads would effectively inhibit sprouting at a storage temperature of 68oF (20oC). Based on source configurations of other AECL irradiation facilities, calculations and measurements of dosage uniformity were made showing that ±33 per cent variation occurred when using two passes on each side of the line source. The source was designed to have increased activity near the ends. The calculated radiation utilization efficiency was 48 per cent. A truck-mounted irradiator was studied in some detail and was found to be too heavy for easy transportation. An irradiator using a railroad flatcar and weighing 60 tons (54,000 kilos) was then considered. Although its movement is restricted, most potato warehouses are located near railroad sidings and are easily reached by a railroad car. The processing cost, including depreciation, source replacement and operating costs, was estimated to be 0.9 per cent per lb. (2.0 cents per kilo) for 1,200 hours operation per year. A longer operation time per year results in a decrease in this processing cost. The above figure is based on estimated costs for a prototype unit. Somewhat lower costs are indicated for production irradiators. (author)

  5. Conceptual design study on very small long-life gas cooled fast reactor using metallic natural Uranium-Zr as fuel cycle input

    Energy Technology Data Exchange (ETDEWEB)

    Monado, Fiber, E-mail: fiber.monado@gmail.com [Nuclear Physics and Biophysics Research Group, Dept. of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Bandung, Indonesia and Dept. of Physics, Faculty of Mathematics and Natural Sciences, Sriwijaya University (Indonesia); Ariani, Menik [Dept. of Physics, Faculty of Mathematics and Natural Sciences, Sriwijaya University (Indonesia); Su' ud, Zaki; Waris, Abdul; Basar, Khairul; Permana, Sidik [Nuclear Physics and Biophysics Research Group, Dept. of Physics, Faculty of Mathematics and Natural Sciences, Bandung Institute of Technology, Bandung (Indonesia); Aziz, Ferhat [National Nuclear Energy Agency of Indonesia (BATAN) (Indonesia); Sekimoto, Hiroshi [CRINES, Tokyo Institute of Technology, O-okoyama, Meguro-ku, Tokyo 152-8550 (Japan)

    2014-02-12

    A conceptual design study of very small 350 MWth Gas-cooled Fast Reactors with Helium coolant has been performed. In this study Modified CANDLE burn-up scheme was implemented to create small and long life fast reactors with natural Uranium as fuel cycle input. Such system can utilize natural Uranium resources efficiently without the necessity of enrichment plant or reprocessing plant. The core with metallic fuel based was subdivided into 10 regions with the same volume. The fresh Natural Uranium is initially put in region-1, after one cycle of 10 years of burn-up it is shifted to region-2 and the each region-1 is filled by fresh Natural Uranium fuel. This concept is basically applied to all axial regions. The reactor discharge burn-up is 31.8% HM. From the neutronic point of view, this design is in compliance with good performance.

  6. A design study of a trigger-less signal reconstruction, an active mirror control and a light collecting system in the framework of the Cherenkov Telescope Array (CTA)

    International Nuclear Information System (INIS)

    Full text: The Physics Institute at the University of Zuerich is involved in the general design study of the future Cherenkov Telescope Array (CTA). The feasibility studies include the prototyping of Active Mirror Control (AMC) devices, which are used to align the single mirror segments of a Cherenkov telescope. Together with our colleagues from the ETH Zuerich, a light collecting system for the telescope camera, composed of solid Plexiglas cones, is designed and investigated in detail. Furthermore, our efforts are dedicated to a trigger-less signal reconstruction method using cross-correlation algorithms. Detailed software-based testing has already been performed and hardware implementation is part of the future plans. This talk will present the basics and current results of the different topics. (author)

  7. Sample of EDF-R&D 2009-2012 core design studies on: Heterogeneous sodium-cooled fast reactors with low sodium void effect

    International Nuclear Information System (INIS)

    • The use of axial or radial heterogeneities allows to reach negative global sodium void worth: → 600 MWe radially heterogeneous cores can be designed (no annual shape, reasonable core size). But the constraint on the fissile radius might be the reason why current performances are not a breakthrough... → Other interesting configuration exists (standard 2 diabolos, etc.). • Complexity versus intrinsic safety: where should the line be drawn? → On 1200 MWe cores, it was shown that very good features can be reached. But very complex designs are needed. • Core design studies are still going on... → The precision of global optimization method will be improved and new safety indicators added. → Optimization studies will be led on the CEA CFV design. → (Little) time should be spent on alternative design options

  8. A three dimensional two energy group coupled reactor physics and thermal hydraulics code (M32) - A tool for student design studies

    International Nuclear Information System (INIS)

    This paper describes a new code M32 that has been developed to perform coupled reactor physics and thermal hydraulic calculations undertaken in student reactor design studies. M32 is a general three-dimensional, two-energy group code that couples a diffusion theory representation of the core with a thermal hydraulic description that accounts for the heat flux and coolant enthalpy rise. A sample application examining the feasibility of a high temperature helium cooled reactor based on the General Atomics GT-MHR design for marine applications is described. M32 has been demonstrated to be a useful addition to the portfolio of computational tools for education and training in reactor design methodologies. British Crown Copyright 2004/MOD. (authors)

  9. Conceptual design study on very small long-life gas cooled fast reactor using metallic natural Uranium-Zr as fuel cycle input

    International Nuclear Information System (INIS)

    Full-text: A conceptual design study of very small 350 MWth Gas-cooled Fast Reactors with Helium coolant has been performed. In this study Modified CANDLE burn-up scheme was implemented to create small and long life fast reactors with natural Uranium as fuel cycle input. Such system can utilize natural Uranium resources efficiently without the necessity of enrichment plant or reprocessing plant. The core with metallic fuel based was subdivided into 10 regions with the same volume. The fresh Natural Uranium is initially put in region-1, after one cycle of 10 years of burn-up it is shifted to region-2 and the each region-1 is filled by fresh Natural Uranium fuel. This concept is basically applied to all axial regions. The reactor discharge burn-up is 31.8 % HM. From the neutronic point of view, this design is in compliance with good performance. (author)

  10. Preliminary systems design study assessment report. [Evaluation of using specific technologies, system concepts for treating the buried waste and surrounding contaminated soil

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1992-01-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques available for the remediation of hazardous and transuranic waste stored at the Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each. This volume contains the descriptions and other relevant information of the four subsystems required for most of the ex situ processing systems. This volume covers the metal decontamination and sizing subsystem, soils processing subsystem, low-level waste subsystem, and retrieval subsystem.

  11. Design study of fuel fabrication and test facility and post-irradiation examination facility for the development of new type fuels

    International Nuclear Information System (INIS)

    Japan Atomic Energy Research Institute (JAERI) conducted a design study concerning the integrated test facilities for the future LWR technology where fuel irradiation tests, nuclear physics experiments, fuel manufacturing, post-irradiation examinations, reprocessing tests and other associated activities would be performed. Fuel engineering facilities, part of the integrated facilities, will consist of a fuel fabrication and test facility, a post-irradiation examination facility and a backend engineering facility. They will carry out fabrication and post-irradiation examinations of MOX fuel with high plutonium content for very high burnup (up to 100GWd/t) and minor actinide-bearing fuels, and also R and D works for backend technology including reprocessing tests on those new type fuels. This paper describes a fundamental concept, primary requisites and results of safety analyses of the fuel fabrication and test facility, and the post-irradiation examination facility. (author)

  12. Case law

    International Nuclear Information System (INIS)

    This section gathers the following case laws: 1 - Canada: Judicial review of Darlington new nuclear power plant project; Appeal decision upholding criminal convictions related to attempt to export nuclear-related dual-use items to Iran: Her Majesty the Queen V. Yadegari; 2 - European Commission: Greenland cases; 3 - France: Chernobyl accident - decision of dismissal of the Court of Appeal of Paris; 4 - Slovak Republic: Aarhus Convention compliance update; 5 - United States: Judgement of a US court of appeals upholding the NRC's dismissal of challenges to the renewal of the operating licence for Oyster Creek Nuclear Generating Station; reexamination of the project of high-level waste disposal site at Yucca Mountain

  13. Case work

    DEFF Research Database (Denmark)

    Shaw, Ian Frank

    2016-01-01

    Answers to the question just what is the ?case? partly defined the fields of sociology and social work in early 20th century Chicago. Drawing on the archives of the University of Chicago, I describe and appraise the way the ?case? figured in social work at Chicago and elsewhere. I ask the...... corresponding question of sociology. Finally, I briefly consider why not much came of social work and sociology ploughing similar territory in ways that served for a time to hallmark their identities. This analysis opens up ways of rethinking how social work and sociological research are distinctive to their...

  14. Cases Description

    DEFF Research Database (Denmark)

    Hansen, Jesper Rohr; Savini, Federico; Wallin, Sirkku;

    2013-01-01

    The JPI Urban Europe research project ‘APRILab’ focuses on planning dilemmas for the transformation of city areas in the urban fringe. In this Working Document we describe the case studies selected by the involved partners: - Aalto University, Finland: T3 in Espoo City - Aalborg University, Denmark...

  15. Case competitions

    DEFF Research Database (Denmark)

    Schjoldager, Anne Gram

    2009-01-01

    The paper presents and discusses a teaching project with case competitions for MA students of specialised translation at the Aarhus School of Business, Aarhus University. Drawing on a series of online questionnaires, the paper ascertains how the project was evaluated by the participating students...

  16. Case report

    DEFF Research Database (Denmark)

    Füchtbauer, Laila; Brusgaard, Klaus; Ledaal, Pål;

    2015-01-01

    ey Clinical Message Vitamin D-dependent rickets type 1 VDDR-1 is a recessive inherited disorder with impaired activation of vitamin D, caused by mutations in CYP27B1. We present long-time follow-up of a case with a novel mutation including high-resolution peripheral quantitative computed tomography...

  17. The Case for Case Reports

    Directory of Open Access Journals (Sweden)

    George R. Saade

    2011-09-01

    Full Text Available If you are reading a hard copy of this editorial, then you are holding in hand the first issue of the American Journal of Perinatology Reports, or AJP Reports as we like to refer to it. Welcome to AJP Reports and thank you for taking the time to peruse it. I hope you find many of the reports interesting and helpful. The editorial team and publisher are very pleased to be able to bring this journal to our readers. Judging by the journal title, the editorial team, and the layout you may have already guessed that this is a companion to the American Journal of Perinatology. We will continue to publish original articles and topical reviews in the American Journal of Perinatology, but all case reports or case series will be referred to AJP Reports. Some may question the need for more case reports. Our decision to start AJP Reports obviously indicates that we think that case reports can be useful. I can refer to several diseases, treatment complications, and procedures that were first brought to the attention of healthcare providers through case reports. The best example of the usefulness of case reports is probably in infectious diseases. In the early phases of an emerging infectious disease, the case report or case series are usually the first clues of a problem. HIV was first brought to the attention of the medical community by case reports.[1] [2] [3] In our own field, the first attempts at treatment of twin-to-twin transfusion syndrome (TTTS using laser coagulation were reported in a case series.[4] After additional reports about the use of laser in TTTS, a randomized trial was performed that cemented laser photocoagulation as a therapeutic modality for TTTS.[5] While case reports or series are not considered the highest form of evidence, they are frequently the first form of evidence and the nudge that starts the cascade of investigation that ultimately leads to high-level evidence. Therefore, their impact on clinical practice may be easily

  18. Case law

    International Nuclear Information System (INIS)

    This section of the Bulletin brings together the texts of the following case laws: Canada: - Judgment of the Federal Court of Canada sending back to a joint review panel for reconsideration the environmental assessment of a proposed new nuclear power plant in Ontario. France : - Conseil d'etat, 24 March 2014 (Request No. 358882); - Conseil d'etat, 24 March 2014 (Request No. 362001). Slovak Republic: - Further developments in cases related to the challenge by Greenpeace Slovakia to the Mochovce nuclear power plant; - Developments in relation to the disclosure of information concerning the Mochovce nuclear power plant. United States: - Initial Decision of the Atomic Safety and Licensing Board Ruling in Favour of Nuclear Innovation North America, LLC (NINA) Regarding Foreign Ownership, Control or Domination

  19. Case Report

    DEFF Research Database (Denmark)

    Bilgin-Freiert, Arzu; Fugleholm, Kåre; Poulsgaard, Lars

    2015-01-01

    We report a case of an intraneural ganglion cyst of the hypoglossal canal. The patient presented with unilateral hypoglossal nerve palsy, and magnetic resonance imaging showed a small lesion in the hypoglossal canal with no contrast enhancement and high signal on T2-weighted imaging. The lesion was...... assumed to be a cystic schwannoma of the hypoglossal nerve. Stereotactic irradiation was considered, but in accordance with the patient's wishes, surgical exploration was performed. This revealed that, rather than a schwannoma, the patient had an intraneural ganglion cyst, retrospectively contraindicating...... irradiation as an option. This case illustrates a very rare location of an intraneural ganglion cyst in the hypoglossal nerve. To our knowledge there are no previous reports of an intraneural ganglion cyst confined to the hypoglossal canal....

  20. Corruption case.

    Science.gov (United States)

    1999-07-23

    A Federal jury in Puerto Rico found three defendants guilty of participating in the theft of $2.2 million in Federal funds from the San Juan AIDS Institute. The key figure in the case is [name removed], a consultant to the institute. He was convicted of 12 counts of money laundering and faces up to 25 years in prison. Two other administrative officials were also convicted in the case. Four others have pleaded guilty, and three more await trial. Rep. Jose Granados Navado was among those implicated; he received $100,000 for his campaign for mayor of San Juan in 1988 from the institute=s medical director. U.S. Rep. Tom Coburn (R-Okla.) has called for an audit of all Ryan White CARE Act funds since this scandal was uncovered. PMID:11366596

  1. Case04

    DEFF Research Database (Denmark)

    Vestergaard, Flemming; Karlshøj, Jan; Hauch, Peter; Lambrecht, Jan; Mouritsen, Jan

    Casestudiets formål er at beskrive og måle en større entreprenørvirksomheds omkostninger og gevin-ster ved at anvende metoder og værktøjer, der er modelbaserede. Case 04 tager udgangspunkt i et konkret byggeprojekt, hvor BIM teknologien er anvendt på et for den danske entreprenørbranche rela...

  2. Case Corabelle

    OpenAIRE

    Hansen, Casper; Henriksen, Jesper; Loznica, Javor; Ragnarsson, Stefan; Hensing, Marcus

    2015-01-01

    This project explores the relation between organizational identity and online brands as formed through interaction and communication on online, social media through a case study of the cancelled music festival event Corabelle that was supposed to have been held in August of 2014. The investigation draws on the theories of Carlos Scolari and David A. Whetten to establish the relation between organizational identity and online brands, and the theories of Henry Jenkins and Jan H. Kietzmann in an...

  3. Preliminary design studies of a 100 MeV H-/H+ LINAC as injector for SNS synchrotron/ADS LINAC

    Indian Academy of Sciences (India)

    S A Pande; Moonooku Prasad; Nita Kulkarni; P R Hannurkar

    2002-11-01

    It is proposed to construct a spallation neutron source (SNS) at Centre for Advanced Technology (CAT) based on a 1 GeV proton synchrotron with 100 MeV H- LINAC as injector. Additionally, the LINAC can form the first 100 MeV part of a 1 GeV proton LINAC to be built in future for accelerator driven system (ADS) applications. We are exploring a configuration of the 100 MeV LINAC which will consist of an H- ion source, a 4–6 MeV RFQ followed either by a 20 MeV drift tube LINAC (DTL) and 100 MeV separated function drift tube LINAC (SDTL) or a coupled cavity drift tube LINAC (CCDTL) structure. In this paper, we present the results of our preliminary physics design studies of the RFQ–SDTL, RFQ–CCDTL and RFQ–DTL–SDTL configurations. The design of the 4.5 MeV RFQ is discussed along with the matching sections between the RFQ–SDTL/DTL and RFQ–CCDTL. The choice of the accelerator configuration and that of various parameters of the individual accelerator structures under consideration are discussed. The design objectives are to arrive at a configuration which eases heat removal for CW operation and which is less prone to halo formation in order to reduce the beam loss at higher energies.

  4. Preliminary design study of underground pumped hydro and compressed-air energy storage in hard rock. Volume 1. Executive summary. Final report

    Energy Technology Data Exchange (ETDEWEB)

    1981-05-01

    Potomac Electric Power Company (PEPCO) and Acres American Incorporated (AAI) have carried out a preliminary design study of water-compensated Compressed Air Energy Storage (CAES) and Underground Pumped Hydroelectric (UPH) plants for siting in geological conditions suitable for hard rock excavations. The work was carried out over a period of three years and was sponsored by the US Department of Energy (DOE), the Electric Power Research Institute (EPRI) and PEPCO. The study was divided into five primary tasks as follows: establishment of design criteria and analysis of impact on power system; selection of site and establishment of site characteristics; formulation of design approaches; assessment of environmental and safety aspects; and preparation of preliminary design of plant. The salient aspects considered and the conclusions reached during the consideration of the five primary tasks for both CAES and UPH are presented in this Executive Summary, which forms Volume 1 of the series of reports prepared during the study. The investigations and analyses carried out, together with the results and conclusions reached, are described in detail in Volumes 2 through 13 and ten appendices.

  5. Preliminary Systems Design Study assessment report. [Evaluation of using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil

    Energy Technology Data Exchange (ETDEWEB)

    Mayberry, J.L.; Feizollahi, F.; Del Signore, J.C.

    1992-01-01

    The System Design Study (SDS), part of the Waste Technology Development Department at the Idaho National Engineering Laboratory (INEL), examined techniques for the remediation of hazardous and transuranic waste stored at Radioactive Waste Management Complex's Subsurface Disposal Area at the INEL. Using specific technologies, system concepts for treating the buried waste and the surrounding contaminated soil were evaluated. Evaluation included implementability, effectiveness, and cost. The SDS resulted in the development of technology requirements including demonstration, testing, and evaluation activities needed for implementing each concept. This volume contains introduction section containing a brief SDS background and lists the general assumptions and considerations used during the development of the system concepts. The introduction section is followed by sections describing two system concepts that produce a waste form in compliance with the Waste Isolation Pilot Plant (WIPP) Waste Acceptance Criteria (WAC) and transportation package (TRAMPAC) requirements. This system concept category is referred to as Waste Form 4, WIPP and TRAMPAC Acceptable.'' The following two system concepts are under this category: Sort, Treat, and Repackage System (4-BE-2); Volume Reduction and Packaging System (4-BE-4).

  6. Experimental verification of methods and codes used in design studies of new reactor concepts and improved in-core fuel management schemes

    International Nuclear Information System (INIS)

    The paper gives a short description of the zero power heavy water research reactor RB at the Nuclear Engineering Department of the Boris Kidric Institute of Nuclear Sciences in Vinca. It describes shortly different experiments and different modifications performed on this facility during the last two decades. In particular, it concentrates on the possibility of using this reactor to verify experimentally methods and codes used in design studies new reactor concepts and improved in-core fuel management schemes. When calculating axially inhomogeneous reactor core, for example, procedures for determining reactor lattice cell parameters and overall reactor parameters can be combined in different ways. Since it was possible to simulate such an axially inhomogeneous core on the RB reactor, experimental verification of different calculational models has been performed, Suggestions, given as the conclusion of these experiments, refer not only to the situation when axial inhomogeneity originates from different initial composition of a reactor core, but also to the most common situation when the axial inhomogeneity is caused oy nonuniform depletion during reactor operation. Finally, the paper points out a number of other interesting and useful experiments which can be performed on the zero power reactor RB and indicates its potential use in international cooperative programs. (author)

  7. Bertoko case

    Directory of Open Access Journals (Sweden)

    AMAIA LAFUENTE RUIZ DE SABANDO

    2001-12-01

    Full Text Available Bertoko Gar, S.A. is a minibrewer firm established in 1999. It produces and sells a beer characterized by its local and home-produced character. Despite the fact that no other bottled beer brewers with the same characteristics exist in its home market, Bertoko competes in a market dominated by multinationals. Once it has set its aims, Bertoko is currently designing its marketing strategy and setting which are the actions to be taken for its near future (some of which are detailed in this case.

  8. Case law

    OpenAIRE

    OECD

    2012-01-01

    France Administrative Court of Appeal of Lyon, 19 June 2012, Judgements Nos. 12LY00233 and 12LY00290 regarding EDF’s permit to construct a waste conditioning and storage facility (ICEDA) in the town of Saint-Vulbas Germany Request for arbitration against Germany at the World Bank’s International Centre for the Settlement of Investment Disputes (ICSID) because of Germany’s legislation leading to the phase-out of nuclear energy India Cases related to the Kudankulam Nuclear Power Project (KKNPP)...

  9. Case Law

    International Nuclear Information System (INIS)

    This section treats of the following case laws sorted by country: 1 - Germany: Federal Administrative Court confirms the judgments of the Higher Administrative Court of the Land Hesse: The shutdown of nuclear power plant Biblis blocks A and B based on a 'moratorium' imposed by the Government was unlawful; List of lawsuits in the nuclear field. 2 - Slovak Republic: Further developments in cases related to the challenge by Greenpeace Slovakia to the Mochovce nuclear power plant; Developments in relation to the disclosure of information concerning the Mochovce nuclear power plant. 3 - United States: Judgment of the Nuclear Regulatory Commission resuming the licensing process for the Department of Energy's construction authorisation application for the Yucca Mountain high-level radioactive waste repository; Judgment of the Licensing Board in favour of Shaw AREVA MOX Services regarding the material control and accounting system at the proposed MOX Facility; Dismissal by US District Court Judge of lawsuit brought by US military personnel against Tokyo Electric Power Company (TEPCO) in connection with the Fukushima Daiichi nuclear power plant accident

  10. Case Law

    International Nuclear Information System (INIS)

    Different case law are presented in this part: By decision dated 17 july 2009, the Ontario Court of Appeal (Canada) has ruled on the scope of solicitor-client privilege and the protections that may be afforded to privileged investigations reports. The decision reaffirms the canadian court system view of the importance of the protection of solicitor-client privilege to the administration of justice; For United states here is a judgment of a U.S. court of Appeals on the design basis threat security rule (2009), this case concerns a challenge to the U.S. Nuclear regulatory commission (N.R.C.) revised design basis threat rule, which was adopted in 2007 (nuclear bulletin law no. 80). The petitioners public citizen, Inc., San Luis Obispo Mothers for Peace and the State of New York filed a lawsuit in the U.S. court of appeals for the Ninth circuit alleging that the N.R.C. acted arbitrarily and capriciously and in violation of law by refusing to include the treat of air attacks in its final revised design basis rule. On the 24. july 2009, a panel of three ninth circuit judges rules 2-1 that the N.R.C. acted reasonably in not including an air treat in its design basis rule. Secondly, judgment of a U.S. court of appeals on consideration of the environmental impact of terrorist attacks on nuclear facilities (2009), this case concerns the scope of the U.S. Nuclear regulatory commission environmental analysis during its review of applications to re-licence commercial nuclear power plants. New Jersey urged the N.R.C. to consider the environmental impact of an airborne terrorist attack on the power plant, arguing that such analysis was required by the national environmental policy act (N.E.P.A.). On 31. march 2009, a panel of three circuit judges declined to follow the ninth circuit opinion and affirmed NRC decision 3-0 ruling that NRC was not required to consider terrorism in its N.E.P.A. analysis because NRC re-licensing would not be a reasonably close cause of terrorism

  11. Case law

    International Nuclear Information System (INIS)

    Concerning the France, the judgement of the European Court of Human Rights on the Right to a fair Trial, in the litigation Collectif Stop Melox and Mox versus France (2007) and the decision of the Council of State Quashing a decree concerning a nuclear installation in Brennilis, for the want of public information and consultation (2007) are reported. For South Africa, the judgment of the Cape High Court in the case of Mc donald and others versus Minister of Minerals and Energy and others (2007) is reported. United Kingdom states the decision of the Wick Sheriff Court Fining UKAEA for plutonium exposure (2007). Concerning Usa the judgment of the US Court of Appeals on environment Analysis of the effects of terrorism (2006) and the vacatur of US Court of Federal Claims Decision regarding Price-Anderson Compensation of Costs in a private Tort Claim (2007) are reported. (N.C.)

  12. Case management.

    Science.gov (United States)

    Rosenstein, A H; Propotnik, T

    1997-03-01

    Providing cost-effective high quality healthcare services ranks as the number one concern for anyone involved with the healthcare delivery system. While quality of care should always be the number one priority, controlling healthcare costs receives most of the attention. With limited healthcare dollars and providers assuming more of the financial risk for services rendered, a whole assortment of cost-containment strategies are being introduced in an effort to maintain some semblance of financial viability. Healthcare providers can approach cost control from two different angles. On the fixed-cost operational overhead side, traditional cost-containment techniques have focused on downsizing, maximizing productivity, staffing redesign, improved purchasing contracts, standardization, inventory control, and other more individualized restructured service models. On the variable-cost clinical side, cost control has been approached by introducing a variety of cost-containment strategies designed to improve efficiency and effectiveness of provider performance. While many of these strategies, previously discussed in the Journal of Healthcare Resource Management have stressed the importance of education, guidelines, pathways, and other clinical "tools for improvement," the success of many of these tools resides in the ability to provide real-time intervention. Real-time intervention rather than the more passive retrospective variance analysis has the greatest potential for producing cost savings by actually making a recommendation that prevents the unwanted event from occurring. In many institutions, the case manager bears the responsibility for monitoring and managing these programs. This article describes various case management models currently used by different institutions. PMID:10166062

  13. Design study of a 200 MW(e) alkali metal/steam binary power plant using a coal-fired fluidized bed furnace

    Energy Technology Data Exchange (ETDEWEB)

    Samuels, G.; Graves, R. L.; Lackey, M. E.; Tudor, J. J.; Zimmerman, G. P.

    1978-04-01

    The results of a study of 200 MW(e) alkali metal/steam binary power plant using a coal-fired fluidized bed furnace are described. Both cesium and potassium were evaluated for the topping cycle working fluid and cesium was selected. The fuel used was Illinois No. 6 coal, and limestone was used as the bed sorbent material. For the reference design, the furnace operated at atmospheric pressure and the cycle conditions for the power conversion system were 1500/sup 0/F to 900/sup 0/F for the topping cycle and 2400 psi 1000/sup 0/F to 1/sup 1///sub 2/ in. Hg for the steam system. Several variations of the plant were briefly evaluated. These variations included using a supercritical steam system and using a pressurized furnace. The principal conclusions of the study are as follows: a satisfactory design of an atmospheric pressure fluidized bed furnace binary power plant was evolved which uses a variation of the conventional binary cycle which permits utilizing the full potential of the alkali metal topping cycle; the net plant efficiency (coal to busbar) of the reference system was 44.6%; the net plant efficiency of a larger system with a 3500 psi 1000/sup 0/F steam system was 46.8%; an intermediate pressure turbocharged system with a furnace pressure of 4 atm (0.4 MPa) would have many advantages in comparison to the atmospheric pressure system, including a plant efficiency about one percentage point higher than the reference design, reduced limestone requirement and potential capital cost saving; and although cost estimates were not a part of the design study, a comparison of the design of this study to that of the Energy Conversion Alternative Study (ECAS) indicates plant costs 20 to 25% less than that of the final ECAS design.

  14. A design study for the isolation of the 281-3H retention basin at the Savannah River Site using the viscous liquid barrier technology

    International Nuclear Information System (INIS)

    This report is a description of the design study for a pilot-scale field demonstration of the Viscous Liquid Barrier (VLB) technology, a new subsurface containment technology for waste isolation using a new generation of barrier liquids. The demonstration site was Retention Basin 281-3H, a shallow catchment basin at the Savannah River Site, which is contaminated mainly by radionuclides (137Cs, 90Sr, and 238Pu). The goals of the field demonstration were (a) to demonstrate the ability to create a continuous subsurface barrier in order to isolate the contaminants, and (b) to demonstrate the continuity, performance, and integrity of the barrier. The site was characterized, and preliminary hydraulic conductivity data were obtained from core samples. Based on the site characteristics and the functional requirements, a conceptual model was developed, the barrier specifications were defined, and lance injection was selected as the emplacement method. The injection strategy for the subsurface conditions at the site was determined using numerical simulations. An appropriate variant of Colloidal Silica (CS) was selected as the barrier liquid based on its relative insensitivity to interactions with the site soils, and the formulation for optimum site performance was determined. A barrier verification strategy, including hydraulic, pneumatic, tracer, and geophysical methods, was developed. A lance water injection test was conducted in order to obtain representative estimates of the hydraulic conductivity and its distribution for the design of the barrier emplacement. The water injection test demonstrated the lack of permeable zones for CS injection, and a decision not to proceed with the barrier emplacement was reached

  15. Ecosystem Functional Units characterized by satellite observed phenology and productivity gradients: a case study for Europe

    OpenAIRE

    IVITS-WASSER Eva; Cherlet, Michael; MEHL Wolfgang; Sommer, Stefan

    2012-01-01

    The present study demonstrates remote sensing derived phenological and productivity indicators of ecosystem functional dynamism. The indices were derived from SPOT VEGETATION NDVI data on 1 km spatial resolution across the pan-European continent using the Phenolo approach. The phenological and productivity indices explained 78% of the variance in the European ecosystem gradient measured by bio-climatic zones. Along this gradient climatic predictors could only explain 57% of the variance in th...

  16. Research data supporting "Design Study for a Laminar-Flying-Wing Aircraft": Surface Pressures - LFW aerofoil surface pressure coefficients in the form used for the suction calculation

    OpenAIRE

    Saeed, T. I.; Graham, W. R.

    2015-01-01

    These files provide the LFW aerofoil surface pressure coefficients in the form used for the suction calculation. 'Geom' files give the section geometry (standard, chord-normalised, coordinates) in two alternative orderings; 'LoCp' and 'UpCp' give pressure coefficient as function of (normalised) chordwise distance for pressure and suction surfaces respectively. For case listing, see 'nameConvention.txt'.

  17. Case law

    International Nuclear Information System (INIS)

    This section reports on 7 case laws from 4 countries: - France: Conseil d'Etat decision, 28 June 2013, refusing to suspend operation of the Fessenheim nuclear power plant; - Slovak Republic: New developments including the Supreme Court's judgment in a matter involving Greenpeace Slovakia's claims regarding the Mochovce nuclear power plant; New developments in the matter involving Greenpeace's demands for information under the Freedom of Information Act; - Switzerland: Judgment of the Federal Supreme Court in the matter of the Departement federal de l'environnement, des transports, de l'energie et de la communication (DETEC) against Ursula Balmer-Schafroth and others on consideration of admissibility of a request to withdraw the operating licence for the Muehleberg nuclear power plant; - United States: Judgment of the Court of Appeals for the District of Columbia Circuit granting petition for writ of mandamus ordering US Nuclear Regulatory Commission (NRC) to resume Yucca Mountain licensing; Judgment of the Court of Appeals for the Second Circuit invalidating two Vermont statutes as preempted by the Atomic Energy Act; Judgment of the NRC on transferring Shieldalloy site to New Jersey's jurisdiction

  18. A matched-pair cluster design study protocol to evaluate implementation of the Canadian C-spine rule in hospital emergency departments: Phase III

    Directory of Open Access Journals (Sweden)

    Rowe Brian H

    2007-02-01

    Full Text Available Abstract Background Physicians in Canadian emergency departments (EDs annually treat 185,000 alert and stable trauma victims who are at risk for cervical spine (C-spine injury. However, only 0.9% of these patients have suffered a cervical spine fracture. Current use of radiography is not efficient. The Canadian C-Spine Rule is designed to allow physicians to be more selective and accurate in ordering C-spine radiography, and to rapidly clear the C-spine without the need for radiography in many patients. The goal of this phase III study is to evaluate the effectiveness of an active strategy to implement the Canadian C-Spine Rule into physician practice. Specific objectives are to: 1 determine clinical impact, 2 determine sustainability, 3 evaluate performance, and 4 conduct an economic evaluation. Methods We propose a matched-pair cluster design study that compares outcomes during three consecutive 12-months "before," "after," and "decay" periods at six pairs of "intervention" and "control" sites. These 12 hospital ED sites will be stratified as "teaching" or "community" hospitals, matched according to baseline C-spine radiography ordering rates, and then allocated within each pair to either intervention or control groups. During the "after" period at the intervention sites, simple and inexpensive strategies will be employed to actively implement the Canadian C-Spine Rule. The following outcomes will be assessed: 1 measures of clinical impact, 2 performance of the Canadian C-Spine Rule, and 3 economic measures. During the 12-month "decay" period, implementation strategies will continue, allowing us to evaluate the sustainability of the effect. We estimate a sample size of 4,800 patients in each period in order to have adequate power to evaluate the main outcomes. Discussion Phase I successfully derived the Canadian C-Spine Rule and phase II confirmed the accuracy and safety of the rule, hence, the potential for physicians to improve care. What

  19. First result of quasi-real-time-power measurement on the JT-60U ECH system and design study of a linear motion antenna

    International Nuclear Information System (INIS)

    shaft can be used as a cooling channel for the mirror. This suggests that the antenna can be designed without a rotation axis, bearings, and a flexible cooling tube. Moreover, because this antenna does not require any link mechanisms to convert linear motion into rotation, backlash can be eliminated; accordingly, a fast and precise beam angle control can be realized. Initial design studies on antenna sizes, a range of the beam angle, and beam quality is presented. (author)

  20. Case law

    International Nuclear Information System (INIS)

    Five articles are tackled: in France, the judgement of the Court of Appeal of Limoges concerning the dumping of radioactive waste by Areva N.C.(2006). The Court of Appeal of Limoges ruled that Areva N.C. was not guilty of dumping radioactive waste, and neither had it infringed radiation protection regulations or general mining industry regulations. there was no proof of damage to fish fauna. In Sweden, judgement on Plans for the dismantling of Barsebaeck (2006). This court case resulted from a dispute between the operator and the Swedish government Swedish radiation Protection Institute. The Swedish Government wanted decommissioning to commence immediately whereas plant management at Barsebaeck had indicated its intention to wait until 2020, when the radiation dose to workers during decommissioning work would be lower. The court approved the plans to commence dismantling in 2020, when a repository for large reactor components will be ready at the national final repository for radioactive waste at the Forsmark plant. In United Kingdom, on October 2006, British Nuclear group Sellafield Ltd. (B.N.G.S.L.) was fined 500 000 pounds (G.B.P.) plus G.B.P. 68000 in costs in a case brought by the UK health and Safety Executive (H.S.E.) for failing to identify and stop an eight-month long leak of 83 400 litres of radioactive liquid at the Thermal Oxide reprocessing Plant (T.H.O.R.P.) at Sellafield in Cumbria. The fine was levied at Carlisle Crown Court after B.N.G.S.L. pleaded guilty, at an earlier hearing, to the three counts of breaching conditions attached to the Sellafield site licence, granted under the 1965 Nuclear Installations Act as amended. These conditions require the licensee to make and comply with written instructions; to ensure safety systems are in good working order; and to ensure radioactive material is contained and, if leaks occur, they are detected and reported. In Usa, in accordance with the Nuclear Waste Policy Act of 1982, as amended (N.W.P.A.) the US

  1. Case law

    International Nuclear Information System (INIS)

    This section treats of the following case laws: 1 - Canada: Decision of the Canadian Federal Court of Appeal overturning a decision to send back for reconsideration an environmental assessment of a proposed new nuclear power plant in Ontario; 2 - France: Council of State decision, 28 November 2014, Federation 'Reseau sortir du nucleaire' (Nuclear Phase-Out network) and others vs. Electricite de France (EDF), Request No. 367013 for the annulment of: - The resolution of the French Nuclear Safety Authority (ASN) dated 4 July 2011 specifying additional regulations for Electricite de France (EDF) designed to strengthen the reactor basemat of reactor No. 1 in the Fessenheim nuclear power plant, and - The resolution of ASN dated 19 December 2012 approving the start of work on reinforcing the reactor basemat in accordance with the dossier submitted by EDF; 3 - Germany: Judgment of the European Court of Justice on the nuclear fuel tax; 4 - India: Judgment of the High Court of Kerala in a public interest litigation challenging the constitutional validity of the Civil Liability for Nuclear Damage Act, 2010; 5 - Japan - District court decisions on lawsuits related to the restart of Sendai NPP and Takahama NPP; 6 - Poland: Decision of the Masovian Voivod concerning the legality of the resolution on holding a local referendum in the Commune of Rozan regarding a new radioactive waste repository; Certain provisions of the Regulation of the Minister of Health of 18 February 2011 on the conditions for safe use of ionising radiation for all types of medical exposure have been declared unconstitutional by a judgment pronounced by the Constitutional Tribunal; 7 - Slovak Republic: Developments in relation to the disclosure of information concerning the Mochovce nuclear power plant

  2. TRISO Fuel Performance: Modeling, Integration into Mainstream Design Studies, and Application to a Thorium-fueled Fusion-Fission Hybrid Blanket

    Energy Technology Data Exchange (ETDEWEB)

    Powers, Jeffrey James [Univ. of California, Berkeley, CA (United States)

    2011-11-30

    This study focused on creating a new tristructural isotropic (TRISO) coated particle fuel performance model and demonstrating the integration of this model into an existing system of neutronics and heat transfer codes, creating a user-friendly option for including fuel performance analysis within system design optimization and system-level trade-off studies. The end product enables both a deeper understanding and better overall system performance of nuclear energy systems limited or greatly impacted by TRISO fuel performance. A thorium-fueled hybrid fusion-fission Laser Inertial Fusion Energy (LIFE) blanket design was used for illustrating the application of this new capability and demonstrated both the importance of integrating fuel performance calculations into mainstream design studies and the impact that this new integrated analysis had on system-level design decisions. A new TRISO fuel performance model named TRIUNE was developed and verified and validated during this work with a novel methodology established for simulating the actual lifetime of a TRISO particle during repeated passes through a pebble bed. In addition, integrated self-consistent calculations were performed for neutronics depletion analysis, heat transfer calculations, and then fuel performance modeling for a full parametric study that encompassed over 80 different design options that went through all three phases of analysis. Lastly, side studies were performed that included a comparison of thorium and depleted uranium (DU) LIFE blankets as well as some uncertainty quantification work to help guide future experimental work by assessing what material properties in TRISO fuel performance modeling are most in need of improvement. A recommended thorium-fueled hybrid LIFE engine design was identified with an initial fuel load of 20MT of thorium, 15% TRISO packing within the graphite fuel pebbles, and a 20cm neutron multiplier layer with beryllium pebbles in flibe molten salt coolant. It operated

  3. Thermal bioclimatic conditions and patterns of behaviour in an urban park in Göteborg, Sweden

    Science.gov (United States)

    Thorsson, Sofia; Lindqvist, Maria; Lindqvist, Sven

    . People in urban areas frequently use parks for recreation and outdoor activities. Owing to the complexity of the outdoor environment, there have only been a few attempts to understand the effect of the thermal environment on people's use of outdoor spaces. This paper therefore seeks to determine the relationship between the thermal environment, park use and behavioural patterns in an urban area of Sweden. The methods used include structured interviews, unobtrusive observations of the naturally occurring behaviour and simultaneous measurements of thermal comfort variables, i.e., air temperature, air humidity, wind speed and global radiation. The thermal environment is investigated through the mean radiant temperature (Tmrt) and the predicted mean vote (PMV) index. The outcome is compared to the subjective behaviour and thermal sensation of the interviewees. It is found that the thermal environment, access and design are important factors in the use of the park. In order to continue to use the park when the thermal conditions become too cold or too hot for comfort, people improve their comfort conditions by modifying their clothing and by choosing the most supportive thermal opportunities available within the place. The study also shows that psychological aspects such as time of exposure, expectations, experience and perceived control may influence the subjective assessment. Comparison between the thermal sensation of the interviewees and the thermal sensation assessed by the PMV index indicates that steady-state models such as the PMV index may not be appropriate for the assessment of short-term outdoor thermal comfort, mainly because they are unable to analyse transient exposure.

  4. Conceptual differences between the bioclimatic urbanism for Europe and for the tropical humid climate

    Energy Technology Data Exchange (ETDEWEB)

    Corbella, O.D.; Magalhaes, M.A.A.A. [Faculdade de Arquitetura e Urbanismo, Universidade Federal do Rio de Janeiro, Rio de Janeiro (Brazil)

    2008-05-15

    This article makes part of a series of conceptual papers to continue the discussion about how architecture and urbanism interact with climate, in tropical regions. Students engaged in normal courses of architecture in tropical regions, particularly in South America, develop their knowledge based on concepts generated in the developed countries - usually related to cold environments. Consequently, these students acquire wrong ideas about urban design of open spaces. Integrating urbanism and climate in tropical countries is still very incipient as an approach and many lecturers reject it, since they prefer to continue with a more formal one, dictated by most of the dominant countries. The herein paper underlines several different concepts and perspectives that separate the two conceptions, leading to a reflection about the subject. (author)

  5. Is bioclimatic architecture a new style of design? A letter to a young architect

    Energy Technology Data Exchange (ETDEWEB)

    Tombazis, Alexandros N. [Meletitiki - Alexandros N. Tombazis and Associates Architects Ltd., Polydroso-Athens (Greece)

    2008-07-01

    The paper presents a series of thoughts on what architecture is all about in the form of a letter from a ''grandpa'' architect to young architects. The letter touches the subjects of architecture, sustainability and energy efficient design, learning from tradition, the relation of architecture to the other arts, the use of technology and mechanical installations, the holistic approach to design, the elements of which architecture is composed, the constraints in architectural design, the notion of ''less is beautiful'' and many more, giving in this way some food for thought for the younger generations. (orig.)

  6. A methodology for the evaluation of the human-bioclimatic performance of open spaces

    Science.gov (United States)

    Charalampopoulos, Ioannis; Tsiros, Ioannis; Chronopoulou-Sereli, Aik.; Matzarakis, Andreas

    2016-02-01

    The purpose of this paper is to present a simple methodology to improve the evaluation of the human-biometeorological benefits of open spaces. It is based on two groups of new indices using as basis the well-known PET index. This simple methodology along with the accompanying indices allows a qualitative and quantitative evaluation of the climatic behavior of the selected sites. The proposed methodology was applied in a human-biometeorology research in the city of Athens, Greece. The results of this study are in line with the results of other related studies indicating the considerable influence of the sky view factor (SVF), the existence of the vegetation and the building material on human-biometeorological conditions. The proposed methodology may provide new insights in the decision-making process related to urban open spaces' best configuration.

  7. Bioclimatic conditioning places for propagation the plants; Acondicionamiento Bioclimatico de locales para programacion de plantas

    Energy Technology Data Exchange (ETDEWEB)

    Iriarte, Adolfo [Catamarca, (Argentina); Lesino, Gabriela [Buenos Aires, (Argentina); Matias, Cesar [Catamarca, (Argentina)

    2000-07-01

    A special tax reduction to promote agricultural investments in the Province of Catamarca in Argentina has created a strong demand of high quality plants of olive (Olea europea L.), walnut (Junglans regia L.) and fig (Ficus carica L.) trees. The method used for plant propagation consists of three stages: rooting of stem cuttings (two months), growth under controlled conditions in a greenhouse (four to five months) and rustication and acclimatization to outdoor conditions in a half-shadow protected area (three to four months). The plant is ready to be transferred to the field in nine to ten months. The rooting stage cannot take place outdoors in hot, arid and windy climates. This paper refers to the design, construction and monitoring of a building where the ambient temperature, humidity and illumination levels are controlled to promote the growth of roots, maintain the stem hydrated and allow restrained photosynthetic activity. Excellent thermal and agronomic results were obtained with rooting efficiencies of 43 to 75 % in summer and 30 to 60 % in winter for olive stems. [Spanish] La necesidad de produccion de olivo (Olea europea L.), nogal (Junglans regia L.) e higueras (Ficus carica L.) de alta calidad para satisfacer la demanda de los establecimientos agropecuarios, ha obligado a utilizar para la produccion de plantas la tecnica de enraizamiento de estacas semilenosas, lo que permite obtener plantas identicas a la planta madre. En regiones de climas calidos y ventosos los factores climaticos externos dificultan el control y mantenimiento de las condiciones ambientales dentro de los recintos destinados a la produccion de plantas mediante estacas. Esto exige disponer de una camara que permita controlar la temperatura y la humedad simultaneamente obtener niveles de iluminacion natural compatible con las necesidades fotosinteticas de las estacas. En el presente trabajo se describen los aspectos constructivos de una casa de vegetacion, analizandose el balance de calor y masa, distribucion de temperatura en la estructura, aire, camas de enraizamiento y humedades relativas internas y externas, asi como resultados termicos y agronomicos logrados durante condiciones de verano e invierno, destacandose que la eficiencia de produccion en verano estuvo entre el 43 y en 75 % y en invierno entre el 30 y 60 % para estacas de olivo.

  8. Anthropocene and bioclimatic potential of mountain resorts in the North Caucasus

    Science.gov (United States)

    Efimenko, Natalia; Chalaya, Elena; Povolotckaia, Nina; Senik, Irina; Slepykh, Victor

    2016-04-01

    There has been studied the influence of anthropocene (A) on natural curative resources (NCR) of the mountain resorts in the North Caucasus (MRNC) according to long-term monitoring (M) of NCR condition which is carried out by PRIC FMBA, aerosol M of IFA RAS, landscape M of SNP, and also references on the state of the environment (E). The healthcare effects of NCR were estimated from the position of the methods[1] accepted in balneology. Typification of anthropogenous factors of the surface atmosphere for MRNC is constructed on the basis of semirational analysis of rehabilitation properties of climate and landscape studied in the course of recovery treatment and health-improving rest of profile patients in clinics of PRIC FMBA taking into account the factors of aerosol pollution of the atmosphere by the technique[2]. In the development of A in the MRNC it is possible to allocate three conditional periods: - 1803 - 1880 - the natural ecosystem of MRNC is almost not changed (10-20%), there were the first signs of influence A on E; - 1881-1970 - the natural ecosystem of MRNC is slightly changed (21-70%), the formation of new forms of the resort landscape and town-planning, the development of mountain-sanitary control zone to decrease anthropogenic pollution of E. According to M the medical and health-improving potential of NCR is increased and high (2,35-2,75 points; 78-92%); - 1971-2015 - the natural ecosystem of MRNC is moderately transformed (71-85%), there is a consolidation of building of city and resort zones, signs of global climate change (the increase in the annual amount of precipitation by 10% (since 2002), episodes of excessive heat (Tmax >30°C) for 12.4%, thermal balance of the person is higher than +600 W/m2 for 11%. There have been revealed some new specific rehabilitation properties of NCR and there have been denoted some criteria of their protection. According to M the medical and health-improving potential of NCR is increased and high (2,18-2,68 points; 73-89%). The multicomponent analysis of the received materials is the basis for a valuation technique of the pathogenic action of anthropogenic factors on NCR and it can be used for justification of measures to decrease the development of A. References: 1. Resort Study of Caucasian Mineralnye Vody region / Under the general edition of MD, prof. V. V. Uyba. Scientific publication. - Pyatigorsk: PSRIRS FMBA. Volume 1. -2009. -335p.; Volume 2. -2011.-368p. 2. A technique of balneological assessment of forest-park landscapes of mountain territories for climatolandscapetherapy at resort treatment of the contingent which is subject to the service of FMBA of Russia//Textbook for doctors. (Authors: Efimenko N.V., Povolotskaya N.P., Kaisinova A.S.) - Pyatigorsk, 2015.-24p.

  9. Case Study: Writing a Journal Case Study

    Science.gov (United States)

    Prud'homme-Genereux, Annie

    2016-01-01

    This column provides original articles on innovations in case study teaching, assessment of the method, as well as case studies with teaching notes. This month's issue describes incorporating a journal article into the classroom by first converting it into a case study.

  10. Case Study Teaching

    Science.gov (United States)

    Herreid, Clyde Freeman

    2011-01-01

    This chapter describes the history of case study teaching, types of cases, and experimental data supporting their effectiveness. It also describes a model for comparing the efficacy of the various case study methods. (Contains 1 figure.)

  11. Clinical Case Registries (CCR)

    Data.gov (United States)

    Department of Veterans Affairs — The Clinical Case Registries (CCR) replaced the former Immunology Case Registry and the Hepatitis C Case Registry with local and national databases. The CCR:HIV and...

  12. CASING DRILLING TECHNOLOGY

    Directory of Open Access Journals (Sweden)

    Nediljka Gaurina-Međimurec

    2005-12-01

    Full Text Available Casing drilling is an alternative option to conventional drilling and uses standard oilfield casing instead of drillstring. This technology is one of the greatest developments in drilling operations. Casing drilling involves drilling and casing a well simultaneously. In casing driling process, downhole tools can be retrieved, through the casing on wire-line, meaning tool recovery or replacement of tools can take minutes versus hours under conventional methods. This process employs wireline-retrievable tools and a drill-lock assembly, permitting bit and BHA changes, coring, electrical logging and even directional or horizontal drilling. Once the casing point is reached, the casing is cemented in place without tripping pipe.

  13. Project management case studies

    CERN Document Server

    Kerzner, Harold R

    2013-01-01

    A new edition of the most popular book of project management case studies, expanded to include more than 100 cases plus a ""super case"" on the Iridium Project Case studies are an important part of project management education and training. This Fourth Edition of Harold Kerzner''s Project Management Case Studies features a number of new cases covering value measurement in project management. Also included is the well-received ""super case,"" which covers all aspects of project management and may be used as a capstone for a course. This new edition:Contains 100-plus case studies drawn from re

  14. Design study of the large hadron electron collider and a rapid cycling synchrotron as alternative to the PS booster upgrade at CERN

    Energy Technology Data Exchange (ETDEWEB)

    Fitterer, Miriam

    2013-02-22

    With the Large Hadron Collider (LHC) the exploration of particle physics at center of mass energies at the TeV scale has begun. To extend the discovery potential of the LHC, a major upgrade is foreseen around 2020 of the LHC itself and the LHC injectors - the chain of accelerators preparing the beam for the LHC. One of the injectors - the second one in the chain - is the Proton Synchrotron (PS) Booster. Its performance is currently limited by the space-charge effect, which is the effect of the electromagnetic field of the particle beam on itself. This effect becomes weaker with higher energy, and therefore an energy upgrade of the PS Booster to 2 GeV maximum beam energy is foreseen. As the PS Booster is with its 40 years already an old machine, the construction of a new accelerator, a Rapid Cycling Synchrotron (RCS), to replace the PS Booster has been proposed. In this thesis different options for the beam guidance in the RCS - referred to as lattice and optics - are studied, followed by a more general comparison of different lattices and optics and their performance under consideration of the space-charge effect. To further complement the LHC physics program, also the possibility of deep inelastic lepton-nucleon scattering at the LHC has been suggested, referred to as Large Hadron Electron Collider (LHeC). In this case the proton beam of the LHC collides with the electron beam, which is accelerated in a separate newly built machine. Two options are considered as electron accelerator: a new energy recovery linac - the Linac-Ring option - and the installation of an electron ring in the existing LHC tunnel - the Ring-Ring option. One of the main challenges of the Ring-Ring option is the integration of the electron ring in the current LHC tunnel. A layout, lattice and optics of the electron accelerator is developed in this thesis, which meets the requirements with regard to integration and reaches the beam parameters demanded by the particle physics experiments.

  15. Design study of the large hadron electron collider and a rapid cycling synchrotron as alternative to the PS booster upgrade at CERN

    International Nuclear Information System (INIS)

    With the Large Hadron Collider (LHC) the exploration of particle physics at center of mass energies at the TeV scale has begun. To extend the discovery potential of the LHC, a major upgrade is foreseen around 2020 of the LHC itself and the LHC injectors - the chain of accelerators preparing the beam for the LHC. One of the injectors - the second one in the chain - is the Proton Synchrotron (PS) Booster. Its performance is currently limited by the space-charge effect, which is the effect of the electromagnetic field of the particle beam on itself. This effect becomes weaker with higher energy, and therefore an energy upgrade of the PS Booster to 2 GeV maximum beam energy is foreseen. As the PS Booster is with its 40 years already an old machine, the construction of a new accelerator, a Rapid Cycling Synchrotron (RCS), to replace the PS Booster has been proposed. In this thesis different options for the beam guidance in the RCS - referred to as lattice and optics - are studied, followed by a more general comparison of different lattices and optics and their performance under consideration of the space-charge effect. To further complement the LHC physics program, also the possibility of deep inelastic lepton-nucleon scattering at the LHC has been suggested, referred to as Large Hadron Electron Collider (LHeC). In this case the proton beam of the LHC collides with the electron beam, which is accelerated in a separate newly built machine. Two options are considered as electron accelerator: a new energy recovery linac - the Linac-Ring option - and the installation of an electron ring in the existing LHC tunnel - the Ring-Ring option. One of the main challenges of the Ring-Ring option is the integration of the electron ring in the current LHC tunnel. A layout, lattice and optics of the electron accelerator is developed in this thesis, which meets the requirements with regard to integration and reaches the beam parameters demanded by the particle physics experiments.

  16. A community-based intervention for improving health-seeking behavior among sexual violence survivors: a controlled before and after design study in rural Tanzania

    Directory of Open Access Journals (Sweden)

    Muzdalifat Abeid

    2015-09-01

    Full Text Available Background: Despite global recognition that sexual violence is a violation of human rights, evidence still shows it is a pervasive problem across all societies. Promising community intervention studies in the low- and middle-income countries are limited. Objective: This study assessed the impact of a community-based intervention, focusing on improving the community's knowledge and reducing social acceptability of violence against women norms with the goal to prevent and respond to sexual violence. Design: The strategies used to create awareness included radio programs, information, education communication materials, and advocacy meetings with local leaders. The intervention took place in Morogoro region in Tanzania. The evaluation used a quasi-experimental design including cross-sectional surveys at baseline (2012 and endline (2014 with men and women aged 18–49 years. Main outcome measures were number of reported rape cases at health facilities and the community's knowledge and attitudes toward sexual violence. Results: The number of reported rape events increased by more than 50% at health facilities during the intervention. Knowledge on sexual violence increased significantly in both areas over the study period (from 57.3 to 80.6% in the intervention area and from 55.5 to 71.9% in the comparison area; p<0.001, and the net effect of the intervention between the two areas was statistically significant (6.9, 95% CI 0.2–13.5, p=0.03. There was significant improvement in most of the attitude indicators in the intervention area, but not in the comparison area. However, the intervention had no significant effect on the overall scores of acceptance attitudes in the final assessment when comparing the two areas (−2.4, 95% CI: −8.4 to 3.6, p=0.42. Conclusions: The intervention had an effect on some indicators on knowledge and attitudes toward sexual violence even after a short period of intervention. This finding informs the public health

  17. Case Base Maintenance Approach.

    OpenAIRE

    Haouchine, Mohamed-Karim; Chebel-Morello, Brigitte; Zerhouni, Noureddine

    2007-01-01

    Case base Maintenance is an active Case Based Reasoning research area. The main stream focuses on the method for reducing the size of the case-base while maintaining case-base competence. This paper gives an overview of these works, and proposes a case deletion strategy based on competence criteria using a novel approach. The proposed method, even if inspired from existing literature, combines an algorithm with a Competence Metric (CM). A series of tests are conducted using two standards data...

  18. Identification of Analytical Factors Affecting Complex Proteomics Profiles Acquired in a Factorial Design Study with Analysis of Variance: Simultaneous Component Analysis.

    Science.gov (United States)

    Mitra, Vikram; Govorukhina, Natalia; Zwanenburg, Gooitzen; Hoefsloot, Huub; Westra, Inge; Smilde, Age; Reijmers, Theo; van der Zee, Ate G J; Suits, Frank; Bischoff, Rainer; Horvatovich, Péter

    2016-04-19

    , (2) stopping trypsin digestion with acid, and (3) the trypsin/protein ratio. This provides guidelines for the experimentalist to keep the ratio of trypsin/protein constant and to control the trypsin reaction by stopping it with acid at an accurately set pH. The hemolysis level cannot be controlled tightly as it depends on the status of a patient's blood (e.g., red blood cells are more fragile in patients undergoing chemotherapy) and the care with which blood was sampled (e.g., by avoiding shear stress). However, its level can be determined with a simple UV spectrophotometric measurement and samples with extreme levels or the peaks affected by hemolysis can be discarded from further analysis. The loadings of the ASCA model led to peptide peaks that were most affected by a given factor, for example, to hemoglobin-derived peptides in the case of the hemolysis level. Peak intensity differences for these peptides were assessed by means of extracted ion chromatograms confirming the results of the ASCA model. PMID:26959230

  19. Forgotten forests - issues and prospects in biome mapping using Seasonally Dry Tropical Forests as a case study

    Directory of Open Access Journals (Sweden)

    Särkinen Tiina

    2011-11-01

    Full Text Available Abstract Background South America is one of the most species diverse continents in the world. Within South America diversity is not distributed evenly at both local and continental scales and this has led to the recognition of various areas with unique species assemblages. Several schemes currently exist which divide the continental-level diversity into large species assemblages referred to as biomes. Here we review five currently available biome maps for South America, including the WWF Ecoregions, the Americas basemap, the Land Cover Map of South America, Morrone's Biogeographic regions of Latin America, and the Ecological Systems Map. The comparison is performed through a case study on the Seasonally Dry Tropical Forest (SDTF biome using herbarium data of habitat specialist species. Results Current biome maps of South America perform poorly in depicting SDTF distribution. The poor performance of the maps can be attributed to two main factors: (1 poor spatial resolution, and (2 poor biome delimitation. Poor spatial resolution strongly limits the use of some of the maps in GIS applications, especially for areas with heterogeneous landscape such as the Andes. Whilst the Land Cover Map did not suffer from poor spatial resolution, it showed poor delimitation of biomes. The results highlight that delimiting structurally heterogeneous vegetation is difficult based on remote sensed data alone. A new refined working map of South American SDTF biome is proposed, derived using the Biome Distribution Modelling (BDM approach where georeferenced herbarium data is used in conjunction with bioclimatic data. Conclusions Georeferenced specimen data play potentially an important role in biome mapping. Our study shows that herbarium data could be used as a way of ground-truthing biome maps in silico. The results also illustrate that herbarium data can be used to model vegetation maps through predictive modelling. The BDM approach is a promising new method in

  20. Case Based Reasoning: Case Representation Methodologies

    Directory of Open Access Journals (Sweden)

    Shaker H. El-Sappagh

    2015-11-01

    Full Text Available Case Based Reasoning (CBR is an important technique in artificial intelligence, which has been applied to various kinds of problems in a wide range of domains. Selecting case representation formalism is critical for the proper operation of the overall CBR system. In this paper, we survey and evaluate all of the existing case representation methodologies. Moreover, the case retrieval and future challenges for effective CBR are explained. Case representation methods are grouped in to knowledge-intensive approaches and traditional approaches. The first group overweight the second one. The first methods depend on ontology and enhance all CBR processes including case representation, retrieval, storage, and adaptation. By using a proposed set of qualitative metrics, the existing methods based on ontology for case representation are studied and evaluated in details. All these systems have limitations. No approach exceeds 53% of the specified metrics. The results of the survey explain the current limitations of CBR systems. It shows that ontology usage in case representation needs improvements to achieve semantic representation and semantic retrieval in CBR system.

  1. Comparative Test Case Specification

    DEFF Research Database (Denmark)

    Kalyanova, Olena; Heiselberg, Per

     This document includes a definition of the comparative test cases DSF200_3 and DSF200_4, which previously described in the comparative test case specification for the test cases DSF100_3 and DSF200_3 [Ref.1]....... This document includes a definition of the comparative test cases DSF200_3 and DSF200_4, which previously described in the comparative test case specification for the test cases DSF100_3 and DSF200_3 [Ref.1]....

  2. Xeroderma pigmentosum (case report

    Directory of Open Access Journals (Sweden)

    Dubey Arvind

    1990-01-01

    Full Text Available Xeroderma pigmentosum is a rare, hereditary and fatal disease of the skin. Ocular involvement is known to occur in 80% of cases. A case with typical cutaneous and ocular lesions is reported.

  3. PSS Case Book

    DEFF Research Database (Denmark)

    Neugebauer, Line Maria; Mougaard, Krestine; Andersen, Jakob Bejbro; McAloone, Tim C.; Bey, Niki; Hsuan, Juliana; Ahm, Thorkild

    The transformation process towards a PSS-oriented company is describes, through the presentation of the best practice cases. Each case describes motivations, challenges, business models and PSS offerings....

  4. FHEO Filed Cases

    Data.gov (United States)

    Department of Housing and Urban Development — The dataset is a list of all the Title VIII fair housing cases filed by FHEO from 1/1/2007 - 12/31/2012 including the case number, case name, filing date, state and...

  5. Defining a periodontitis case

    DEFF Research Database (Denmark)

    Baelum, Vibeke; Lopez, Rodrigo

    2012-01-01

    Aim The purpose of the present study was to assess the extent to which the three periodontitis case definition systems proposed by van der Velden, Tonetti & Claffey and Page & Eke identify the same cases in a population of never-treated adults with limited tradition for oral hygiene procedures...... concomitant presence of CAL and BOP at the site level. Results The case definitions by Tonetti & Claffey and by Page & Eke yielded similar results, which were also quite similar to the results of simply identifying a case of periodontitis as a person having at least one site showing both CAL ≥ 4 mm and BOP....... Conclusions The results indicate that it should be feasible for the periodontal community to reach an agreement over the distinction between a case and a non-case. The classification system proposed by van der Velden is better suited for providing clinicians with a clear image of the case....

  6. Meta-Information Systems: a design study

    OpenAIRE

    Mark Madsen; Iain Fogg; Clive Ruggles

    1994-01-01

    Metadata systems are concerned with the management of data which describes other data, whether datasets, catalogues or entire database management systems. Metadata systems can be used to store richly detailed forms of information, perform seamless wide-ranging searches of information distributed across networks, and to integrate information stored in disparate repositories. Here we describe the design and methods of implementation derived from the experience of the Leicester University Metada...

  7. Next Step Spherical Torus Design Studies

    International Nuclear Information System (INIS)

    Studies are underway to identify and characterize a design point for a Next Step Spherical Torus (NSST) experiment. This would be a ''Proof of Performance'' device which would follow and build upon the successes of the National Spherical Torus Experiment (NSTX) a ''Proof of Principle'' device which has operated at PPPL since 1999. With the Decontamination and Decommissioning (DandD) of the Tokamak Fusion Test Reactor (TFTR) nearly completed, the TFTR test cell and facility will soon be available for a device such as NSST. By utilizing the TFTR test cell, NSST can be constructed for a relatively low cost on a short time scale. In addition, while furthering spherical torus (ST) research, this device could achieve modest fusion power gain for short-pulse lengths, a significant step toward future large burning plasma devices now under discussion in the fusion community. The selected design point is Q=2 at HH=1.4, P subscript ''fusion''=60 MW, 5 second pulse, with R subscript ''0''=1.5 m, A=1.6, I subscript ''p''=10vMA, B subscript ''t''=2.6 T, CS flux=16 weber. Most of the research would be conducted in D-D, with a limited D-T campaign during the last years of the program

  8. Design Study: ELENA Bending Magnet Prototype

    CERN Document Server

    Schoerling, D

    2013-01-01

    The ELENA bending magnet prototype shall prove that the proposed design meets the requirements set by the ELENA beam dynamics. The following points will be discussed in detail: (i) production process of a magnetic yoke diluted with stainless steel plates, (ii) the stability and repeatability of the field homogeneity of such a yoke over the full working range, (iii) choice of soft magnetic steel, (iv) hysteresis effects, (v) mechanical deformations, (vi) thermal insulation to intercept heat load from baking for activation of NEG coating in the vacuum chamber, (vii) end shim design. In order to verify these points the following measurements will be performed: (i) Hall probe scanning, (ii) integrated field homogeneity measurement (DC), (iii) integrated field homogeneity measurement (AC).

  9. Computer aided design study of hypermixing nozzles

    Science.gov (United States)

    Mefferd, L. A.; Bevilacqua, P. M.

    1979-01-01

    The development of a nozzle which combines the hypermixing and lobe mechanisms to achieve further increases in jet entrainment and ejector performance is investigated. A computer program which incorporates a two equation turbulence model and is used to predict and compare the evolution of jets from various nozzle designs is discussed. Increasing the length of the nozzle lobes and an alternating lobe nozzle are a methods examined for increasing the entrainment rate.

  10. CONCEPTUAL DESIGN STUDY OF HORN POWER SUPPLY

    International Nuclear Information System (INIS)

    A 250 kA pulsed power supply is required for the focusing horn of the proposed Brookhaven AGS Super Neutrino Beam Facility for long baseline neutrino oscillation experiment. It is expected to pulse at 2.5 Hz repetition rate. A preliminary study is being conducted to explore the key issues associated with the power supply system design. Advanced technologies used in similar systems as well as new ideas are being examined, simulated and evaluated. This power supply will be a very high stored energy, high average power, and high peak power system

  11. Dry Well Storage Facility conceptual design study

    International Nuclear Information System (INIS)

    The Dry Well Storage Facility described is assumed to be located adjacent to or near a Spent Fuel Receiving and Packaging Facility and/or a Packaged Fuel Transfer Facility. Performance requirements, quality levels and codes and standards, schedule and methods of performance, special requirements, quality assurance program, and cost estimate are discussed. Appendices on major mechanical equipment and electric power requirements are included

  12. Tokamak blanket design study, final report

    International Nuclear Information System (INIS)

    A cylindrical module concept was developed, analyzed, and incorporated in a tokamak blanket system that includes piping systems, vacuum boundary sealing, and support structures. The design is based on the use of state-of-the-art structural materials (20% cold-worked type 316 stainless steel), lithium as the breeding material, and pressurized helium as the coolant. The module design consists of nested concentric cylinders (with an outer diameter of 10 cm) and features direct wall cooling by helium flowing between the outer (first-wall) cylinder and the inner (lithium-containing) cylinder. Each cylinder can withstand full coolant pressure, thus enhancing reliability. Results show that stainless steel is a viable material for a first wall subjected to a neutron wall loading of 4 MW/m2 and a particle heat flux of 1 MW/m2. Lifetime analysis shows that the first-wall design meets the goal of operating at 20-min cycles with 95% duty for 100,000 cycles. To reduce system complexity, a larger 20-cm-diam module also was analyzed for incorporation in the blanket assembly. Reliability assessment indicates that it may be possible to double the module in size from 10 to 20 cm in diameter. With a modest increase in coolant pumping power, a blanket assembly comprising 20-cm-diam modules can still achieve 100,000 operating cycles - equivalent to a 3.6-year design lifetime - with only one or two helium coolant leaks into the plasma

  13. Extrap conceptual fusion reactor design study

    International Nuclear Information System (INIS)

    A study has recently been initiated to asses the fusion reactor potential of the Extrap concept. A reactor model is defined that fulfills certain economic and environmental criteria. This model is applied to Extrap and a reference reactor is outlined. The design is optimized by varying parameters subject to both physics and engineering constraints. Several design options are examined and key engineering issues are identified and addressed. Some preliminary results and conclusions of this work are summarized. (authors)

  14. Design study of plastic film heat exchanger

    Science.gov (United States)

    Guyer, E. C.; Brownell, D. L.

    1986-02-01

    This report presents the results of an effort to develop and design a unique thermoplastic film heat exchanger for use in an industrial heat pump evaporator system and other energy recovery applications. The concept for the exchanger is that of individual heat exchange elements formed by two adjoining and freely hanging plastic films. Liquid flows downward in a regulated fashion between the films due to the balance of hydrostatic and frictional forces. The fluid stream on the outside of film may be a free-falling liquid film, a condensing gas, or a noncondensing gas. The flow and structural principles are similar to those embodied in an earlier heat exchange system developed for use in waste water treatment systems (Sanderson). The design allows for high heat transfer rates while working within the thermal and structural limitations of thermoplastic materials. The potential of this new heat exchanger design lies in the relatively low cost of plastic film and the high inherent corrosion and fouling resistance. This report addresses the selection of materials, the potential heat transf er performance, the mechanical design and operation of a unit applied in a low pressure steam recovery system, and the expected selling price in comparison to conventional metallic shell and tube heat exchangers.

  15. PLUTONIUM-238 PRODUCTION TARGET DESIGN STUDIES

    Energy Technology Data Exchange (ETDEWEB)

    Hurt, Christopher J [ORNL; Wham, Robert M [ORNL; Hobbs, Randall W [ORNL; Owens, R Steven [ORNL; Chandler, David [ORNL; Freels, James D [ORNL; Maldonado, G Ivan [ORNL

    2014-01-01

    A new supply chain is planned for plutonium-238 using existing reactors at the Oak Ridge National Laboratory (ORNL) and Idaho National Laboratory (INL) and existing chemical recovery facilities at ORNL. Validation and testing activities for new irradiation target designs have been conducted in three phases over a 2 year period to provide data for scale-up to production. Target design, qualification, target fabrication, and irradiation of fully-loaded targets have been accomplished. Data from post-irradiation examination (PIE) supports safety analysis and irradiation of future target designs.

  16. L-Star magnet system design studies

    International Nuclear Information System (INIS)

    The paper presents a brief summary of the many magnet designs considered for the L-Star Detector. Options included uniform field toroids, solenoids, magnetic bottles, concentric solenoids, cusps and transverse field dipoles. Fringe field shielding using a ferromagnetic return frame and/or superconducting windings have been considered. The level of design effort for the various concepts varied from electromagnetic design only to a full conceptual design including stress analysis, structural design, conductor and winding design and drawings. In all instances the level of effort is adequate to establish credibility of performance, construction and compatibility with the intended use

  17. Advanced SFR concept design studies at KAERI

    International Nuclear Information System (INIS)

    Full text: Advanced SFR design concepts have been proposed and evaluated against the design requirements to satisfy the Gen IV technology goals. Two types of conceptual core designs, Breakeven and TRU burner cores were developed. Breakeven core is 1,200 MWe and does not have blankets to enhance the proliferation resistance. According to the current study, TRU burning rate increases linearly with the rated core powers from 600 MWe to 1,200 MWe. Considering 1) the realistic size of an SFR demonstration reactor for the long-term R and D plan with the goal of a demonstration SFR construction by 2028, and 2) the availability of a KALIMER-600 reactor system design that was developed in the last R and D phase, a TRU burner of 600 MWe was selected. The heat transport system of Advanced SFR was designed to be a pool type to enhance system safety through slow system transients, where primary sodium is contained in a reactor vessel. The heat transport system is composed of Primary Heat Transport System (PHTS), Intermediate Heat Transport System (IHTS), Steam Generating System (SGS) and Residual Heat Removal System (RHRS). The heat transport system was established through trade studies in order to enhance the safety and to improve the economics and performance of the KALIMER-600 design. Trade studies were performed for the number of IHTS loops, the number of PHTS pumps, Steam Generator (SG) design concepts, energy conversion system concepts, cover gas operation methods, and an improved concept of safety-graded passive decay heat removal system. From the study, the heat transport system of Advanced SFR has design features such as two IHTS loops, a Rankine cycle energy conversion system, two double-wall straight tube type SGs, and a passive decay heat removal system. In order to secure the economic competitiveness of an SFR, several concepts were implemented in the mechanical structural design without losing the reactor safety level. The material of reactor vessel and internal structure is a Type 316 stainless steel. The outer diameter of the reactor vessel is 14.5m, which is a very compact size compared to the other designs. Various R and D activities have been performed in order to support the development of Advanced SFR design concepts and to update computational tools. These activities include validating neutronics analysis codes, PDRC experiment, the conceptual design of supercritical carbon dioxide (S-CO2) Brayton cycle system, Na-CO2 interaction test, under-sodium viewing technique, computerization of structural integrity evaluation, sodium technologies, and metal fuel technology. (author)

  18. Advanced SFR Concept Design Studies at KAERI

    International Nuclear Information System (INIS)

    Advanced SFR design concepts have been developed which satisfy the Gen IV technology goals at KAERI. Two types of reactor core were developed for breakeven and TRU burner and both cores do not have blankets to enhance proliferation resistance. The Advanced SFR is a pool-type reactor that improves system safety through slow system transients. The heat transport system adopts two double wall tube Steam Generators and a passive Residual Heat Removal System PDRC. To secure the economic competitiveness of an SFR, the diameter of the reactor vessel of the Advanced SFR is designed to be 14.5 m, which is a very compact size compared to other designs. Also, various R and D activities have been performed in order to prepare some analysis tools and to support the development of design concepts. (author)

  19. Flight Path Recovery System (FPRS) design study

    Energy Technology Data Exchange (ETDEWEB)

    1978-09-01

    The study contained herein presents a design for a Flight Path Recovery System (FPPS) for use in the NURE Program which will be more accurate than systems presently used, provide position location data in digital form suitable for automatic data processing, and provide for flight path recovery in a more economic and operationally suitable manner. The design is based upon the use of presently available hardware and technoloy, and presents little, it any, development risk. In addition, a Flight Test Plan designed to test the FPRS design concept is presented.

  20. Design study of high breeding fast reactor

    International Nuclear Information System (INIS)

    Aiming to increase fuel breeding capability as the most essential feature of fast breeders, an idea of the FP gas purge/tube-in-shell type metallic fuel assembly is proposed. It makes volume fraction of fuel high as more than 50% and realizes a very hard neutron spectrum in the core. The structure of the fuel assembly, its fabrication and the FP gas purging mechanism were assessed and it is clarified that the new concept of the fuel assembly is engineeringly feasible. FP gas purging does not affect shielding structure and can be managed by a small scale cover-gas treatment system because of good trapping characteristics of bonding sodium in the assembly as expected. The fuel handling system without forced cooling is possible. Other reactor components such as IHX were also evaluated. Thus, a concept of the total reactor system of a fast breeding reactor of 670 MWe with the ultra-high breeding ratio of 1.84 and the short reactor doubling time of 6.7 years was obtained. (author)

  1. Design studies for the Double Chooz trigger

    International Nuclear Information System (INIS)

    The main characteristic of the neutrino mixing effect is assumed to be the coupling between the flavor and the mass eigenstates. Three mixing angles (θ12, θ23, θ13) are describing the magnitude of this effect. Still unknown, θ13 is considered very small, based on the measurement done by the CHOOZ experiment. A leading experiment will be Double Chooz, placed in the Ardennes region, on the same site as used by CHOOZ. The Double Chooz goal is the exploration of ∝80% from the currently allowed θ13 region, by searching the disappearance of reactor antineutrinos. Double Chooz will use two similar detectors, located at different distances from the reactor cores: a near one at ∝150 m where no oscillations are expected and a far one at 1.05 km distance, close to the first minimum of the survival probability function. The measurement foresees a precise comparison of neutrino rates and spectra between both detectors. The detection mechanism is based on the inverse β-decay. The Double Chooz detectors have been designed to minimize the rate of random background. In a simplified view, two optically separated regions are considered. The target, filled with Gd-doped liquid scintillator, is the main antineutrino interaction volume. Surrounding the target, the inner veto region aims to tag the cosmogenic muon background which hits the detector. Both regions are viewed by photomultipliers. The Double Chooz trigger system has to be highly efficient for antineutrino events as well as for several types of background. The trigger analyzes discriminated signals from the central region and the inner veto photomultipliers. The trigger logic is fully programmable and can combine the input signals. The trigger conditions are based on the total energy released in event and on the PMT groups multiplicity. For redundancy, two independent trigger boards will be used for the central region, each of them receiving signals from half of the photomultipliers. A third trigger board will handle the inner veto signals and the additional trigger inputs. The work presented in this thesis establishes the trigger algorithm as result of the trigger efficiency optimization. The efficiency parameters are obtained from fits of Monte Carlo simulation data. Various possible influences are considered, the resulted algorithm being able to sustain the trigger goals for all kinds of events. Also presented is a method for measuring the trigger efficiency based on the redundancy of the two target trigger boards. Cosmogenic muons are the dominant source of the Double Chooz triggered events. For the near detector, the foreseen muon rate is ∝250 Hz. The DAQ system is unable to sustain the full read-out of the detector at such high frequency. As consequence, the triggered events are treated differently, regarding their importance for future analysis. For physics events, the full available information is saved, the offline data for background muons will contain only summary information. The trigger algorithm is able to identify ''special'' muons classes, for which the full detector read-out is performed. The muon recognition is based on the energy depositions from all detector regions and on the ''topological'' information provided by groups of inner veto photomultipliers. (orig.)

  2. Design studies for the Double Chooz trigger

    Energy Technology Data Exchange (ETDEWEB)

    Cucoanes, Andi Sebastian

    2009-07-24

    The main characteristic of the neutrino mixing effect is assumed to be the coupling between the flavor and the mass eigenstates. Three mixing angles ({theta}{sub 12}, {theta}{sub 23}, {theta}{sub 13}) are describing the magnitude of this effect. Still unknown, {theta}{sub 13} is considered very small, based on the measurement done by the CHOOZ experiment. A leading experiment will be Double Chooz, placed in the Ardennes region, on the same site as used by CHOOZ. The Double Chooz goal is the exploration of {proportional_to}80% from the currently allowed {theta}{sub 13} region, by searching the disappearance of reactor antineutrinos. Double Chooz will use two similar detectors, located at different distances from the reactor cores: a near one at {proportional_to}150 m where no oscillations are expected and a far one at 1.05 km distance, close to the first minimum of the survival probability function. The measurement foresees a precise comparison of neutrino rates and spectra between both detectors. The detection mechanism is based on the inverse {beta}-decay. The Double Chooz detectors have been designed to minimize the rate of random background. In a simplified view, two optically separated regions are considered. The target, filled with Gd-doped liquid scintillator, is the main antineutrino interaction volume. Surrounding the target, the inner veto region aims to tag the cosmogenic muon background which hits the detector. Both regions are viewed by photomultipliers. The Double Chooz trigger system has to be highly efficient for antineutrino events as well as for several types of background. The trigger analyzes discriminated signals from the central region and the inner veto photomultipliers. The trigger logic is fully programmable and can combine the input signals. The trigger conditions are based on the total energy released in event and on the PMT groups multiplicity. For redundancy, two independent trigger boards will be used for the central region, each of them receiving signals from half of the photomultipliers. A third trigger board will handle the inner veto signals and the additional trigger inputs. The work presented in this thesis establishes the trigger algorithm as result of the trigger efficiency optimization. The efficiency parameters are obtained from fits of Monte Carlo simulation data. Various possible influences are considered, the resulted algorithm being able to sustain the trigger goals for all kinds of events. Also presented is a method for measuring the trigger efficiency based on the redundancy of the two target trigger boards. Cosmogenic muons are the dominant source of the Double Chooz triggered events. For the near detector, the foreseen muon rate is {proportional_to}250 Hz. The DAQ system is unable to sustain the full read-out of the detector at such high frequency. As consequence, the triggered events are treated differently, regarding their importance for future analysis. For physics events, the full available information is saved, the offline data for background muons will contain only summary information. The trigger algorithm is able to identify ''special'' muons classes, for which the full detector read-out is performed. The muon recognition is based on the energy depositions from all detector regions and on the ''topological'' information provided by groups of inner veto photomultipliers. (orig.)

  3. Mechatronical Design Studies on Small Brushless Motors

    OpenAIRE

    W. Amrhein; S. Silber; K. Nenninger; Trauner, G.; R. Schöb

    2003-01-01

    Brushless DC- and AC-permanent-magnet motors controlled by powerful micro-controller electronics have opened up a significant share of the small motor market in the last years. Based on the mechanical low cost construction of single-phase motor the paper presents electronic drive concepts to improve the performance and for special applications also the lifetime of brushless motors. The tangential and radial forces acting on the rotor are controlled by special phase current curves to reduce th...

  4. Design Study of Beijing XFEL Test Facility

    CERN Document Server

    Dai, J P

    2005-01-01

    As R&D of X-ray Free Electron Laser facility in China, the construction of Beijing XFEL Test Facility (BTF) has been proposed. And the start to end simulation of BTF was made with codes PARMELA, ELEGANT and TDA. This paper presents the motivation, the scheme and the simulation results of BTF.

  5. Conceptual Design Studies for a CEPC Detector

    CERN Document Server

    Chekanov, S V

    2016-01-01

    The physics potential of the Circular Electron Positron Collider (CEPC) can be significantly strengthened by two detectors with complementary designs. A promising detector approach based on the Silicon Detector (SiD) designed for the International Linear Collider (ILC) is presented. Several simplifications of this detector for the lower energies expected at the CEPC are proposed. A number of cost optimizations of this detector are illustrated using full detector simulations. We show that the proposed changes will enable to reach the physics goals at the CEPC.

  6. Laser fusion system design study. Final report

    International Nuclear Information System (INIS)

    The following studies were completed: (1) The synthesis of a pointing/control system compatible with existing and advanced laser opto-mechanical configurations. (2) Attainment of the required pointing angle, longitudinal focus, and differential pathlength accuracies. (3) Maximum modularization of the sensor and gimbal assemblies to provide the required accuracies at minimum cost. Detailed information is given on each. (MOW)

  7. Fusion reactor blanket/shield design study

    International Nuclear Information System (INIS)

    A joint study of tokamak reactor first-wall/blanket/shield technology was conducted by Argonne National Laboratory (ANL) and McDonnell Douglas Astronautics Company (MDAC). The objectives of this program were the identification of key technological limitations for various tritium-breeding-blanket design concepts, establishment of a basis for assessment and comparison of the design features of each concept, and development of optimized blanket designs. The approach used involved a review of previously proposed blanket designs, analysis of critical technological problems and design features associated with each of the blanket concepts, and a detailed evaluation of the most tractable design concepts. Tritium-breeding-blanket concepts were evaluated according to the proposed coolant. The ANL effort concentrated on evaluation of lithium- and water-cooled blanket designs while the MDAC effort focused on helium- and molten salt-cooled designs. A joint effort was undertaken to provide a consistent set of materials property data used for analysis of all blanket concepts. Generalized nuclear analysis of the tritium breeding performance, an analysis of tritium breeding requirements, and a first-wall stress analysis were conducted as part of the study. The impact of coolant selection on the mechanical design of a tokamak reactor was evaluated. Reference blanket designs utilizing the four candidate coolants are presented

  8. Standard mirror fusion reactor design study

    International Nuclear Information System (INIS)

    This report covers the work of the Magnetic Fusion Energy Division's reactor study group during FY 1976 on the standard mirror reactor. The ''standard'' mirror reactor is characterized as a steady state, neutral beam sustained, D-T fusioning plasma confined by a Yin-Yang magnetic mirror field. The physics parameters are obtained from the same physics model that explains the 2XIIB experiment. The model assumes that the drift cyclotron loss cone mode occurs on the boundary of the plasma, and that it is stabilized by warm plasma with negligible energy investment. The result of the study was a workable mirror fusion power plant, steady-state blanket removal made relatively simple by open-ended geometry, and no impurity problem due to the positive plasma potential. The Q (fusion power/injected beam power) turns out to be only 1.1 because of loss out the ends from Coulomb collisions, i.e., classical losses. This low Q resulted in 77% of the gross electrical power being used to power the injectors, thereby causing the net power cost to be high. The low Q stimulated an intensive search for Q-enhancement concepts, resulting in the LLL reactor design effort turning to the field reversal mirror and the tandem mirror, each having Q of order 5

  9. EBT-II conceptual design study

    Energy Technology Data Exchange (ETDEWEB)

    Dandl, R. A.; Baity, Jr., F. W.; Ballou, J. K.

    1978-09-01

    The proposed EBT-II will use 48 superconducting coils to provide the required steady-state, cyclotron resonant, toroidal magnetic field of 4.3 T for electron cyclotron heating (ECH) with microwaves at 120 GHz. The peak design fields are 7.8 T in the coil, 6.0 T in the coil throat, and 3.0 T in the cavity midplane. Bulk ECH will be provided by eight 120-GHz, 200-kW cw gyrotrons, and provisions have been made for an additional 800 kW of cw profile heating in the range of 70 to 90 GHz. The torus major radius and mean coil radius are 520 cm and 28 cm respectively, yielding a mechanical aspect ratio of approximately 20. The basic device parameters of microwave frequency and power, magnetic field, and size should allow experiments that penetrate well into the collisionless regime and thus provide a definitive test of neoclassical scaling. This scaling test will be pushed further by using a built-in provision which permits changing the effective aspect ratio by varying the current through 96 copper toroidal aspect ratio enhancement (ARE) coils (2 per microwave cavity). Phase 1 of the experiment will be the study of transport and aspect ratio scaling of basic device parameters for comparison with results from EBT-I and EBT-Scale (EBT-S). Under optimum conditions, we project n tau approximately 10/sup 13/ sec/cm/sup 3/ with T/sub i/ and T/sub e/ approximately 3 to 8 keV. Phase 2 will center on the addition of 1 MW of neutral beam heating for direct heating of ions in conjunction with microwave heating of electrons so as to permit control of the ambipolar potential. With this added heating power, it appears possible to attain near-breakeven conditions in a hydrogen plasma at ..beta.. approximately equal to 10%.

  10. Flight Path Recovery System (FPRS) design study

    International Nuclear Information System (INIS)

    The study contained herein presents a design for a Flight Path Recovery System (FPPS) for use in the NURE Program which will be more accurate than systems presently used, provide position location data in digital form suitable for automatic data processing, and provide for flight path recovery in a more economic and operationally suitable manner. The design is based upon the use of presently available hardware and technoloy, and presents little, it any, development risk. In addition, a Flight Test Plan designed to test the FPRS design concept is presented

  11. Nuclear-Powered GPS Spacecraft Design Study

    Energy Technology Data Exchange (ETDEWEB)

    Raab, Bernard

    1977-05-01

    This is the final report of a study to investigate the potential benefits of a nuclear (radioisotope) - powered satellite for advanced phases of the Global Positioning System (GPS) program. The critical parameters were: power to user; mean mission duration; orbital predictability; thermal control of on-board frequency standards; and vulnerability. The reference design approach is described, and input data are given for two power systems that are under development: an organic Rankine system and a Brayton cycle system. Reference design details are provided and structural design and analysis are discussed, as well as thermal design and analysis. A higher altitude version is also considered.

  12. Multi-Band Feeds: A Design Study

    CERN Document Server

    Maan, Yogesh; Raja, Wasim; Mehta, Nikhil

    2012-01-01

    Broadband antenna feeds are of particular interest to existing and future radio telescopes for multi-frequency studies of astronomical sources. Although a 1:15 range in frequency is difficult to achieve, the well-known Eleven feed design offers a relatively uniform response over such a range, and reasonably well-matched responses in E & H planes. However, given the severe Radio Frequency Interference in several bands over such wide spectral range, one desires to selectively reject the corresponding bands. With this view, we have explored the possibilities of having a multi-band feed antenna spanning a wide frequency range, but which would have good response only in a number of pre-selected (relatively) RFI-free windows (for a particular telescope-site). The designs we have investigated use the basic configuration of pairs of dipoles as in the Eleven feed, but use simple wire dipoles instead of folded dipoles used in the latter. From our study of the two designs we have investigated, we find that the desig...

  13. Design studies of SSC coupled cavity linac

    International Nuclear Information System (INIS)

    The SSC coupled cavity linac (CCL) will be a side coupled structure operating at 1284 MHz to accelerate a nominal 25 mA H- beam from 70 MeV to 600 MeV. The authors present results of both cavity design and beam dynamics studies. Each accelerating cavity is optimized by SUPERFISH; coupled cavity characteristics in the region of low-, mid- and high-energies are checked by MAFIA-3D. MAFIA-3D was also used to design the bridge coupler systems. The beam dynamics and error analysis are simulated by CCLDYN and CCLTRACE. Possible future upgrade of the CCL to 1 GeV is also discussed

  14. Design Studies with DEMIRCI for SPP RFQ

    CERN Document Server

    Yasatekin, B; Alacakir, A; Unel, G

    2014-01-01

    To design a Radio Frequency Quadrupole (RFQ) is a onerous job which requires a good understanding of all the main parameters and the relevant calculations. Up to the present there are only a few software packages performing this task in a reliable way. These legacy software, though proven in time, could benefit from the modern software development tools like Object Oriented (OO) programming. In this note, a new RFQ design software, DEMIRCI is introduced. It is written entirely from scratch using C++ and based on CERN's OO ROOT library. It has a friendly graphical user interface and also a command line interface for batch calculations. It can also interact by file exchange with similar software in the field. After presenting the generic properties of DEMIRCI, its compatibility with similar software packages is discussed based on the results from the reference design parameters of SPP (SNRTC Project Prometheus), a demonstration accelerator at Ankara, Turkey.

  15. VXIbus data collection system -- A design study

    International Nuclear Information System (INIS)

    The German support program has sponsored the work to investigate the VXIbus as integration platform for safeguards instrumentation. This paper will cover the analysis of the user requirements for a VXIbus based monitoring system for integrated safeguards -- primarily for reliable unattended in-field collection of large amounts of data. The goal is to develop a suitable system architecture. The design of the system makes use of the VXIbus standard as the selected hardware platform Based upon the requirement analysis and the overriding need for high reliability and robustness, a systematic investigation of different operating system options, as well as development and integration tools will be considered. For the software implementation cycle high and low level programming tools are required. The identification of the constraints for the programming platform and the tool selection will be presented. Both the strategic approach, the rules for analysis and design work as well as the executive components for the support of the implementation and production cycle are given. Here all the conditions for reliable, unattended and integrated safeguards monitoring systems will be addressed. The definition of the basic and advanced design principles are covered. The paper discusses the results of a study on a system produced to demonstrate a high data rate timer/counter application

  16. A design study on the recycle reactor

    International Nuclear Information System (INIS)

    PNC is promoting R and D on advanced nuclear-fuel recycling which reduces the environmental load and supports nuclear non-proliferation while fully securing economic efficiency and safety. This report describes the fast breeder reactor core which is suitable for constituting this system. This core consists of large-sized opening type fuel assemblies each carrying a control rod and employing mixed nitride fuel pins with sodium bonded to maintain passive safety. (author)

  17. TARA tandem mirror reactor design study

    International Nuclear Information System (INIS)

    A point design is presented for a tandem mirror reactor based upon a TARA plug configuration in which a potential plug for center cell ions is created in an axisymmetric cell adjacent to the center cell. We will incorporate the same center cell as the MARS design, allowing a direct comparison of the different plug configurations. The study will include a magnet design that satisfied the reactor criteria for circular flux surfaces at the center cell plasma edge, stability against ballooning, trapped particle and interchange modes, and zero net parallel currents. We will also present a self-consistent power balance of the reactor, and compare the reactor's energy amplification factor Q and technological requirements with the MARS design

  18. Self-Management for Primary School Students Demonstrating Problem Behavior in Regular Classrooms: Evidence Review of Single-Case Design Research

    Science.gov (United States)

    Busacca, Margherita L.; Anderson, Angelika; Moore, Dennis W.

    2015-01-01

    This review evaluates self-management literature targeting problem behaviors of primary school students in general education settings. Thirty-one single-case design studies met inclusion criteria, of which 16 demonstrated adequate methodological rigor, according to What Works Clearinghouse (WWC) design standards. Visual analysis and WWC…

  19. Osteopoikilosis - Case report

    Directory of Open Access Journals (Sweden)

    Vilson Ruci

    2014-03-01

    Full Text Available Osteopoikilosis is a rare bone anomaly usually benign which may be confused with other severe primary diseases or dangerous metastatic bone lesions. We present one new case describing typical radiological findings with no clinical signs or other associations. No malignant transformation or other complications happened in the last ten years. Osteopoikilosis is found in most cases incidentally, and in most cases is not associated with other serious medical complications. Screening of family members may be considered.

  20. Borderline Cases and Definiteness

    OpenAIRE

    Vecsey, Zoltán

    2012-01-01

    Borderline cases of vague predicates are often characterized with the help of a definiteness operator. Although such operators can certainly contribute to the solution of the problem of vagueness, they may also generate unexpected consequences. Either borderlineness is identified implicitly with a well-defined range of cases, or borderline cases are seen as being definitely borderline. In this paper I argue that we can avoid these consequences by providing an asymmetric definition of borderli...