WorldWideScience

Sample records for century energy systems

  1. 21st century's energy: hydrogen energy system

    International Nuclear Information System (INIS)

    Fossil fuels (i.e., petroleum, natural gas and coal), which meet most of the world's energy demand today, are being depleted fast. Also, their combustion products are causing the global problems, such as the greenhouse effect, ozone layer depletion, acid rains and pollution, which are posing great danger for our environment and eventually for the life in our planet. Many engineers and scientists agree that the solution to these global problems would be to replace the existing fossil fuel system by the Hydrogen Energy System. Hydrogen is a very efficient and clean fuel. Its combustion will produce no greenhouse gases, no ozone layer depleting chemicals, little or no acid rain ingredients and pollution. Hydrogen, produced from renewable energy (e.g., solar) sources, would result in a permanent energy system, which we would never have to change. However, there are other energy systems proposed for the post-petroleum era, such as a synthetic fossil fuel system. In this system, synthetic gasoline and synthetic natural gas will be produced using abundant deposits of coal. In a way, this will ensure the continuation of the present fossil fuel system. The two possible energy systems for the post-fossil fuel era (i.e., the solar hydrogen energy system and the synthetic fossil fuel system) are compared with the present fossil fuel system by taking into consideration production costs, environmental damages and utilization efficiencies. The results indicate that the solar hydrogen energy system is the best energy system to ascertain a sustainable future, and it should replace the fossil fuel system before the end of the 21st Century

  2. Energy Systems and Technologies for the coming Century

    DEFF Research Database (Denmark)

    Sønderberg Petersen, Leif; Larsen, Hans Hvidtfeldt

    for the extended utilisation of sustainable energy - Distributed energy production technologies such as fuel cells, hydrogen, bioenergy, wind, hydro, wave, solar and geothermal - Centralised energy production technologies such as clean coal technologies, CCS and nuclear - Renewable energy for the......Risø International Energy Conference 2011 took place 10 – 12 May 2011. The conference focused on: - Future global energy development options, scenarios and policy issues - Intelligent energy systems of the future, including the interaction between supply and end-use - New and emerging technologies...... transport sector and its integration in the energy system The proceedings are prepared from papers presented at the conference and received with corrections, if any, until the final deadline on 20-04-2011....

  3. Energy systems and technologies for the coming century. Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Soenderberg Petersen, L.; Larsen, Hans (eds.)

    2011-05-15

    Risoe International Energy Conference 2011 took place 10 - 12 May 2011. The conference focused on: 1) Future global energy development options, scenarios and policy issues. 2) Intelligent energy systems of the future, including the interaction between supply and end-use. 3) New and emerging technologies for the extended utilisation of sustainable energy. 4) Distributed energy production technologies such as fuel cells, hydrogen, bioenergy, wind, hydro, wave, solar and geothermal. 5) Centralised energy production technologies such as clean coal technologies, CCS and nuclear. 6) Renewable energy for the transport sector and its integration in the energy system The proceedings are prepared from papers presented at the conference and received with corrections, if any, until the final deadline on 20-04-2011. (Author)

  4. Energy System Expectations for Nuclear in the 21. Century: A Plausible Range

    International Nuclear Information System (INIS)

    This paper outlines a range of scenarios describing what the world's energy system might look like in the middle of the century, and what nuclear energy's most profitable role might be. The starting point is the 40 non-greenhouse-gas-mitigation scenarios in the Special Report on Emissions Scenarios (SRES) of the Intergovernmental Panel on Climate Change (IPCC, 2000). Given their international authorship and comprehensive review by governments and scientific experts, the SRES scenarios are the state of the art in long-term energy scenarios. However, they do not present the underlying energy system structures in enough detail for specific energy technology and infrastructure analyses. This paper therefore describes initial steps within INPRO (The International Project on Innovative Nuclear Reactors and Fuel Cycles of the International Atomic Energy Agency) to translate the SRES results into a range of possible nuclear energy technology requirements for mid-century. The paper summarizes the four SRES scenarios that will be used in INPRO and the reasons for their selection. It provides illustrative examples of the sort of additional detail that is being developed about the overall energy system implied by each scenario, and about specific scenario features particularly relevant to nuclear energy. As recommended in SRES, the selected scenarios cover all four SRES 'story-line families'. The energy system translations being developed in INPRO are intended to indicate how energy services may be provided in mid-century and to delineate likely technology and infrastructure implications. They will indicate answers to questions like the following. The list is illustrative, not comprehensive. - What kind of nuclear power plants will best fit the mid-century energy system? - What energy forms and other products and services provided by nuclear reactors will best fit the mid-century energy system? - What would be their market shares? - How difficult will it be to site new nuclear

  5. Integrating wind and solar power into the energy systems of the 21st century

    Energy Technology Data Exchange (ETDEWEB)

    Flavin, C. [Worldwatch Inst., Washington, DC (United States)

    1995-12-31

    Although they have been pursued by scientists and entrepreneurs for two decades, solar and wind energy have not yet claimed the large share of the world energy market that proponents hoped they would. Yet the past two years brought a series of developments that suggest the time has come for solar and wind energy to compete directly with fossil fuels. Wind and solar power generators are likely to contribute significant power to the electricity systems of scores of countries within the next decade, with generating costs as low as 4-5 cents per kilowatt-hour. This will require adjustment in the operation of power transmission and distribution systems to accommodate intermittent resources, as well as new time-specific pricing of electricity. The transition to more open, competitive power systems, with liberal access by independent producers, is likely to speed introduction of the new technologies. Altogether, the energy that strikes the earth`s atmosphere in the form of sunlight each year, and the winds that flow from it, represent the equivalent of nearly 1,000 trillion barrels of oil-sufficient to fuel the global economy thousands of times over. By relying on a new generation of efficient, high-tech, and mass produced energy conversion devices such as advanced wind turbines and photovoltaics, the world can rapidly reduce its dependence on oil and coal in the twenty-first century. In the more distant future, solar and wind energy have the potential not only to supply much of the world`s electricity but to displace the direct use of oil and natural gas. Solar and wind energy can be used to split water via electrolysis, producing hydrogen gas that can be substituted for liquid and gaseous fuels. (46 refs.)

  6. 21st century energy solutions. Coal and Power Systems FY2001 program briefing

    International Nuclear Information System (INIS)

    The continued strength of American's economy depends on the availability of affordable energy, which has long been provided by the Nations rich supplies of fossil fuels. Forecasts indicate that fossil fuels will continue to meet much of the demand for economical electricity and transportation fuels for decades to come. It is projected that natural gas, oil, and coal will supply nearly 90% of US energy in 2020, with coal fueling around 50% of the electricity. It is essential to develop ways to achieve the objectives for a cleaner environment while using these low-cost, high-value fuels. A national commitment to improved technologies-for use in the US and abroad-is the solution. The Coal and Power Systems program is responding to this commitment by offering energy solutions to advance the clean, efficient, and affordable use of the Nations abundant fossil fuel resources. These solutions include: (1) Vision 21-A multi-product, pollution-free energy plant-producing electricity, fuels, and/or industry heat-could extract 80% or more of the energy value of coal and 85% or more of the energy value of natural gas; (2) Central Power Systems-Breakthrough turbines and revolutionary new gasification technologies that burn less coal and gas to obtain energy, while reducing emissions; (3) Distributed Generation-Fuel cell technology providing highly efficient, clean modular power; (4) Fuels-The coproduction of coal-derived transportation fuels and power from gasification-based technology; (5) Carbon Sequestration-Capturing greenhouse gases from the exhaust gases of combustion or other sources, or from the atmosphere itself, and storing them for centuries or recycling them into useful products; and (6) Advanced Research-Going beyond conventional thinking in the areas of computational science, biotechnology, and advanced materials

  7. Basic Research Needs for Geosciences: Facilitating 21st Century Energy Systems

    Energy Technology Data Exchange (ETDEWEB)

    DePaolo, D. J.; Orr, F. M.; Benson, S. M.; Celia, M.; Felmy, A.; Nagy, K. L.; Fogg, G. E.; Snieder, R.; Davis, J.; Pruess, K.; Friedmann, J.; Peters, M.; Woodward, N. B.; Dobson, P.; Talamini, K.; Saarni, M.

    2007-06-01

    To identify research areas in geosciences, such as behavior of multiphase fluid-solid systems on a variety of scales, chemical migration processes in geologic media, characterization of geologic systems, and modeling and simulation of geologic systems, needed for improved energy systems.

  8. Global Energy Challenges of the 21. Century and Nuclear Energy

    International Nuclear Information System (INIS)

    The paper considers the world energy demand till the middle of the century, as well as possible forecasting solution for this challenge. On the base of the mathematical model developed in the Kurchatov Institute in 2003- 2006, the vision of the global nuclear energy system and its potential contribution in the energy mix was analyzed. The rate of rapprochement between specific energy consumptions in different countries of the world is a key parameter determining the energy market strain. It was shown that a continuation of the current world trends of this rapprochement would result in an energy resource deficit already in the nearest future. The energy mix picture would contain an 'unsatisfied demand' area of about 10 000 Mtoe of total energy to be consumed by the mid-century Supposing that the mankind has to meet the 'unsatisfied demand' by nuclear energy, the global energy challenges of the 21. century energy do not impose any upper limit on nuclear energy development, the scale of which would be determined by development opportunities. Russia, as one of the pioneers of the First Nuclear Era, possesses great experience of solving the key issues of nuclear energy of the 20. century, and is capable to play an important role in dealing with the challenges faced by nuclear in the 21. century. (authors)

  9. Flexibility in 21st Century Power Systems

    Energy Technology Data Exchange (ETDEWEB)

    Cochran, J.; Miller, M.; Zinaman, O.; Milligan, M.; Arent, D.; Palmintier, B.; O' Malley, M.; Mueller, S.; Lannoye, E.; Tuohy, A.; Kujala, B.; Sommer, M.; Holttinen, H.; Kiviluoma, J.; Soonee, S. K.

    2014-05-01

    Flexibility of operation--the ability of a power system to respond to change in demand and supply--is a characteristic of all power systems. Flexibility is especially prized in twenty-first century power systems, with higher levels of grid-connected variable renewable energy (primarily, wind and solar). This paper summarizes the analytic frameworks that have emerged to measure this characteristic and distills key principles of flexibility for policy makers.

  10. Which energy systems for the 21st century? Volume 2 - Consumption and synthesis

    International Nuclear Information System (INIS)

    Today, energy can be perceived like a constraint or a challenge. A 'constraint', because at the time where we assist to the emergence of the Southern large countries, the availability of energy resources as well as environmental issues can shortcircuit socio-economic development at a worldwide level, with not easily predictable social consequences. A 'challenge', because the energy and environmental issue compels us to think of the fundamental choices in society, as the debate on 'sustainable development' shows. This book gives an insight in energy issues, from an interdisciplinary point of view, integrating elements of the past, the current situation and the medium- and long-term future. Dealing with consumption and its control, it supplements the first volume devoted to energy production, published in 1999. A synthesis section closes this book

  11. Renewable energy education for 21st century

    International Nuclear Information System (INIS)

    international solar and renewable energy professional societies, in identifying the range and level of teaching materials required for use at schools and universities. This has resulted in many new books and teaching packages involving multi media presentation materials becoming available on the open market. Availability of computer software packages, originally developed for research purposes, has led to the introduction of solar system simulation into many engineering and architectural courses. Finally, as we move into the arena of the virtual school or university of the twenty first century, there is no doubt that more and more teaching and learning material will be made available free of charge on the world wide web, and that students worldwide will eventually have ease of access to academic and commercial information on a scale unimaginable only a few years ago. (Author)

  12. Energy in the 21st century

    CERN Document Server

    Fanchi, John R

    2010-01-01

    Energy may be the most important factor that will influence the shape of society in the 21st century. The cost and availability of energy significantly impacts our quality of life, the health of national economies, the relationships between nations, and the stability of our environment. What kind of energy do we want to use in our future? Will there be enough? What will be the consequences of our decisions? Everyone has a stake in the answers to these questions and the decisions that are being made to provide energy. ""Energy in the 21st Century"", in its second edition, examines the energy so

  13. Energy in the 21st century

    CERN Document Server

    Fanchi, John R

    2013-01-01

    Many events that affect global energy production and consumption have occurred since the second edition of Energy in the 21st Century appeared in 2011. For example, an earthquake and tsunami in Japan led to the disruption of the Fukushima nuclear facility and a global re-examination of the safety of the nuclear industry. Oil and natural gas prices continue to be volatile, and the demand for energy has been affected by the global economy. The third edition updates data and the discussion of recent events.Energy in the 21st Century has been used as the text for an introductory energy course for

  14. A century of nuclear energy

    International Nuclear Information System (INIS)

    The author proposes a history of the French nuclear industry and nuclear energy since the Nobel prizes of 1903 and 1911. He describes and comments the context of the energy production sector before the development of the nuclear energy, the development of the institutional context, the successive and different nuclear technologies, the main characteristics of the French program at its beginning, the relationship between the nuclear energy and the public, the main accidents and lessons learned from them, the perspectives of evolution of nuclear energy

  15. Energies of the 21. century

    International Nuclear Information System (INIS)

    This issue addresses innovation in the nuclear energy by recalling the beginning of nuclear energy in France, by presenting third-generation reactors and new concepts for the fourth generation. It also addresses the different ways of exploiting solar energy (thermal, photovoltaic and concentrated solar power), the development of bio-fuel production (biomass, second-generation bio-fuels), the development of batteries and fuel cells (lithium-ions batteries, battery with respect to application, use of hydrogen), and how to prepare thermonuclear fusion (studies performed in Tokamak, the ITER project)

  16. Requirements and potential development pathways for fission energy supply infrastructures of the 21st century - a systems viewpoint

    International Nuclear Information System (INIS)

    Using an energy supply systems approach, we envision attributes and characteristic needs of a future global fission-based energy supply infrastructure, enumerate potential pathways for meeting those needs, and identify the underlying enabling science and technology developments for R and D efforts to meet the needs

  17. Evolving the Nation's Energy Infrastructure: A Challenging System Issue for the Twenty-First Century; Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Garrett, B.

    2007-04-01

    Over the next several decades, a profound transformation of the global energy enterprise will occur driven largely by population growth and economic development. How this growing demand for energy is met poses one of the most complex and challenging issues of our time. The current national energy dialogue reflects the challenge in simultaneously considering the social, political, economic, and technical issues as the energy system is defined, technical targets are established, and programs and investments are implemented to meet those technical targets. This paper examines the general concepts and options for meeting this challenge.

  18. Which energy for the 21 century transports

    International Nuclear Information System (INIS)

    With more than 95% of the energy consumption realized by the petroleum, the transportation sector represents 20% of the world energy consumption. How will be assure the energy need of this sector for the 21 century? How control the greenhouse gases emissions and in particular the CO2 by the control of the transportation sector? This paper aims to answer the first question taking into account the bond second one. It analyzes the today situation and scenario for 2020 and 2050, the possible substitution fuels, the hybrid vehicles, the hydrogen fuel and the electric power vehicles. (A.L.B.)

  19. Nuclear energy for the 21. century

    International Nuclear Information System (INIS)

    This document gathers 5 introductory papers to this conference about nuclear energy for the 21. century: the French energy policy during the last 30 years (situation of France with respect to the energy supply and demand, main trends of the French energy policy, future of the French nuclear policy); presentation of IAEA (technology transfer, nuclear safety, non-proliferation policy, structure and financial resources, council of governors, general conference, secretariat); nuclear power and sustainable development; promoting safety at nuclear facilities (promoting safety, basics of safety, safety at the design stage, risk management, regulatory control and efficiency of the regulation organization, role of IAEA); nuclear energy today (contribution to sustainable development, safety, best solution for the management of radioactive wastes, future of nuclear energy). (J.S.)

  20. Toward a competitive electric power industry for the 21. century. Comprehensive Review of the Northwest Energy System final report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-12

    This report contains a review of the activities and the recommendations of the Steering Committee of the Comprehensive Review of the Northwest Energy System. The topics of the report include a summary of recommendations; federal power marketing; preserving the benefits of low-cost hydropower for the Northwest; Columbia River System governance; reflecting the values and meeting the needs of northwest citizens through conservation, renewable resources and low-income energy services; ensuring the benefits of competition for all by consumer access to the competitive market; open-access power transmission for competion in generation; and the future power system role for a four-state regional body. An appendix contains a dissenting opinion.

  1. Energy feedbacks of northern high-latitude ecosystems to the climate system due to reduced snow cover during 20th century warming

    Science.gov (United States)

    Euskirchen, E.S.; McGuire, A.D.; Chapin, F.S.

    2007-01-01

    The warming associated with changes in snow cover in northern high-latitude terrestrial regions represents an important energy feedback to the climate system. Here, we simulate snow cover-climate feedbacks (i.e. changes in snow cover on atmospheric heating) across the Pan-arctic over two distinct warming periods during the 20th century, 1910-1940 and 1970-2000. We offer evidence that increases in snow cover-climate feedbacks during 1970-2000 were nearly three times larger than during 1910-1940 because the recent snow-cover change occurred in spring, when radiation load is highest, rather than in autumn. Based on linear regression analysis, we also detected a greater sensitivity of snow cover-climate feedbacks to temperature trends during the more recent time period. Pan-arctic vegetation types differed substantially in snow cover-climate feedbacks. Those with a high seasonal contrast in albedo, such as tundra, showed much larger changes in atmospheric heating than did those with a low seasonal contrast in albedo, such as forests, even if the changes in snow-cover duration were similar across the vegetation types. These changes in energy exchange warrant careful consideration in studies of climate change, particularly with respect to associated shifts in vegetation between forests, grasslands, and tundra. ?? 2007 Blackwell Publishing Ltd.

  2. China's Energy Strategy in the Twenty-first Century

    Institute of Scientific and Technical Information of China (English)

    Fan He; Donghai Qin

    2006-01-01

    China's energy demand and energy imports have increased substantially in recent 5 years andwill continue to grow in future. Increasing dependency on the world market and the tension between energy supply and demand clearly show that energy is becoming a major constraint for China's future economic development. We introduce the background of China's energy demand and supply in this paper and discuss China's energy strategy in the twentyfirst century, focusing on growth, energy security and environmental sustainability.

  3. Nuclear energy for the 21st century

    International Nuclear Information System (INIS)

    It composed of 15 parts, which are energy resource, knowledge on nuclear energy, nuclear fuel cycle, present condition of nuclear power generation, the necessity of nuclear power generation, safety of nuclear power generation, current situation of major foreign countries, generation and disposal of waste of radiation, management of waste of radiation, commentary on insistence related waste of radiation, management of waste of radiation in major foreign countries, radiation and daily life, international organization on nuclear energy, diplomacy cooperation of nuclear energy and extra major interesting of nuclear energy and waste of radiation.

  4. Energy scenarios for the 21. century

    International Nuclear Information System (INIS)

    The Canadian Energy Research Institute (CERI) has adopted a scenario approach in developing its energy outlook to 2025. These scenarios can be used in developing strategies to optimize opportunities and avoid the dangers that often accompany the more deterministic approach to forecasting. The scenarios are not predictions, but are instead feasible outcomes for the future. They encompass 5 major areas of uncertainty for the world energy market through 2025 that impact energy demand and fuel mix. These include the economy, technology, energy policy, resource availability, and market structure. The drivers for the energy scenarios are the environment, demography, economics, culture geopolitics and technology. The paper referred to the world energy market, the OECD energy markets, the non-OECD energy markets and the FSU energy markets under 3 energy scenarios including: (1) the material world in which the new economy drives the global economy, (2) a very dark Orwellian world in which there is a rise in terrorism and a breakdown in international cooperation, and (3) a utopia in which the major powers become increasingly serious about achieving sustainable development. 22 refs., 48 figs

  5. The role of nuclear energy in the next century

    International Nuclear Information System (INIS)

    This presentation perform a forecasting on the role of nuclear energy in the next century. The overview covers cost analysis of the different energy sources oriented to globalization, comparison, sensitiveness trends and risks. The second part spots on the decision making, involved organizations, criteria and the economic parameter to be taken into consideration in the definition process for energy planning. Another part considers the globalization from the nuclear energy viewpoint

  6. Energy security in the 21. century

    International Nuclear Information System (INIS)

    The traditional and current issues regarding the security of energy supplies is reviewed with particular emphasis on the oil sector and the implications of the terrorist attack on New York and Washington on September 11, 2001. In November 2001, the Committee on Sustainable Energy of the United Nations Economic Commission for Europe (UNECE) issued a press release about energy-related environmental problems and the need to factor in the danger of terrorist attacks on energy installations. The presentation examines the current levels of energy demand, expected areas of growth, and changing patterns of energy supply for the United States. The impact that growth in the industrial states of China will have in the global scheme of the petroleum industry is also discussed. Levels of political stability and security in many parts of the world are reviewed with particular reference to the Near and Middle East, Africa, Asia and Latin America. It is noted that liberalization and globalization are favouring the agglomeration of capital and labour into larger and larger multinational energy companies, which raises the concern about excessive market power. In its 2001 analysis of energy outlook, the International Energy Agency indicated that the reserves of oil, natural gas, coal and uranium are more than adequate to meet projected demand growth until at least 2020, by which time new technologies such as hydrogen-based fuel cells, clean coal burning and carbon sequestration will hold out the prospect of abundant, clean energy supplies. 15 refs., 6 figs

  7. Energy research for the next century

    International Nuclear Information System (INIS)

    The paper presents the following theses: 1. Energy politics in the Federal Republic of Germany faces new challenges. 2. The seemingly relaxed situation on the energy markets and the supply situation in Germany are deceptive. 3. Research and technological development have to create the preconditions for an efficient and rational implementation of concepts of energy politics. 4. Research and development cannot substitute energy politics. The fact that only joint programmes of the industry and the government can successfully master the challenges of energy politic is true throughout but especially for the field of nuclear energy. There is a joint responsibility which means that the load has to be distributed to all the shoulders. Now is the time to start the necessary dialogue, now is the time to work out concepts. (orig./HSCH)

  8. Energy, environment, and sustainable development in the new century

    International Nuclear Information System (INIS)

    The new century's ultimate global challenge will be for the world community to sustain its growth while preserving environment in the presence of ever increasing world population, that is, balancing economy, environment, and population problems. The sheer magnitude of population growth, together with people's innate aspirations for improved life, will put enormous demands on energy production. Deployment of new, energy-intensive technologies will further increase the pressure. The increased energy production and consumption in turn will inevitably impact on our global environment, as exemplified by such issues as global climate change. Environmental issues associated with energy production and use are affecting society's preferences for different types of energy. Thus, energy and environment will remain two poles of a central global issue in this century. The challenge is then how to produce energy in a way that is friendly to environment. The combination of nuclear power and various renewable energy sources may offer a key component to meeting the challenge. This paper presents a big picture of globally sustainable development in the new century. The role of energy and environment is brought to the fore in this context. In particular, it addresses the importance of nuclear power and renewable energy, as this combination of options will absolutely minimize the emission of greenhouse gases that have steadily and alarmingly degraded our atmospheric environment. (authors)

  9. Nuclear energy challenges in this Century

    International Nuclear Information System (INIS)

    The past fifty years have witnessed the advent of a new energy source and the beginning of yet another in the series of energy-use transitions that have marked our history since the start of our technological development. Each of these transitions has been accompanied by adaptive challenges. Each unique set of challenges has been met. Today the world faces the need for another transition. This paper outlines some of the associated challenges that lie ahead of us all, as we adapt to this new and exciting environment. The first step in defining the challenges ahead is to make some form of prediction of the future energy supply and demand during the period. Herein, the future up to 2010 is presumed to include two major events -- first, a decline in the availability and a rise in price of petroleum, and second a need to reduce greenhouse gases in our atmosphere. Both of these events are taken to be imminent. Added to these expected events is the assumption that the total of wind, solar, and other such energy sources will be able to contribute, but only in a relatively small way, to the provision of needed energy to our ever-expanding human population. (author)

  10. The conference the nuclear energy for the 21. century

    International Nuclear Information System (INIS)

    This conference aimed to discuss future public policies concerning the nuclear energy and in particular, to analyze the possible contribution of this energy to satisfy the energy needs, taking into account the public life style of this century. The conference showed the importance, that can't be ignored, of the nuclear energy to the climatic change fight and recalled the conditions of the nuclear energy exploitation. Conclusions of the conference are detailed. This paper presents also some allocution extracts. (A.L.B.)

  11. Energy for the 21st Century

    Science.gov (United States)

    Aubrecht, Gordon

    2009-04-01

    The Fourth Assessment Report of the IPCC was released in 2007 and dealt with the scientific basis for climate change, consequences of emissions, and mitigation and adaptation. The Industrial Revolution began the large-scale emission of pollutants to Earth's atmosphere and water from exploitation of coal, oil, and minerals. Energy has been cheap, if we do not consider the unintended consequences. The times may finally be changing--the cost of oil (in constant dollars), and the gasoline made from it, was higher through the first half of 2008 than at any time in history before declining with the global economic downturn, and promises to rise again when the global economy recovers. For the first time, a majority of Americans polled understand that global warming will lead to significant change in climate. How will these changes affect future actions of citizens of North America and the world? What can be done to protect the future of our children and grandchildren? This talk will focus on human effects on Earth of our need for energy and their import for the future.

  12. Transforming Power Systems; 21st Century Power Partnership

    Energy Technology Data Exchange (ETDEWEB)

    None

    2015-05-20

    The 21st Century Power Partnership - a multilateral effort of the Clean Energy Ministerial - serves as a platform for public-private collaboration to advance integrated solutions for the large-scale deployment of renewable energy in combination with deep energy ef?ciency and smart grid solutions.

  13. Transformations in Air Transportation Systems For the 21st Century

    Science.gov (United States)

    Holmes, Bruce J.

    2004-01-01

    Globally, our transportation systems face increasingly discomforting realities: certain of the legacy air and ground infrastructures of the 20th century will not satisfy our 21st century mobility needs. The consequence of inaction is diminished quality of life and economic opportunity for those nations unable to transform from the 20th to 21st century systems. Clearly, new thinking is required regarding business models that cater to consumers value of time, airspace architectures that enable those new business models, and technology strategies for innovating at the system-of-networks level. This lecture proposes a structured way of thinking about transformation from the legacy systems of the 20th century toward new systems for the 21st century. The comparison and contrast between the legacy systems of the 20th century and the transformed systems of the 21st century provides insights into the structure of transformation of air transportation. Where the legacy systems tend to be analog (versus digital), centralized (versus distributed), and scheduled (versus on-demand) for example, transformed 21st century systems become capable of scalability through technological, business, and policy innovations. Where air mobility in our legacy systems of the 20th century brought economic opportunity and quality of life to large service markets, transformed air mobility of the 21st century becomes more equitable available to ever-thinner and widely distributed populations. Several technological developments in the traditional aircraft disciplines as well as in communication, navigation, surveillance and information systems create new foundations for 21st thinking about air transportation. One of the technological developments of importance arises from complexity science and modern network theory. Scale-free (i.e., scalable) networks represent a promising concept space for modeling airspace system architectures, and for assessing network performance in terms of robustness

  14. Energy supply concepts in the 21st century - the role of nuclear energy. Proceedings

    International Nuclear Information System (INIS)

    Contents: Supply structures in the 21st century; security of energy supply in Europe - The European Commission's Green Paper; the U.S. nuclear future; DOE initiatives to advance nuclear energy in the United States; supply reliability - contribution of renewable energy sources; role of brown coal in the futural energy mixing; gas supply for the 21st century; the contribution of nuclear power on supply reliability in Europe and a new power plant for Finland. (GL)

  15. Nuclear energy in this century - a bird in the hand

    International Nuclear Information System (INIS)

    This presentation reviews the past half-century of nuclear energy from one person's point of view, fully recognizing likely errors in fact and perception. It also takes a look at the coming 50 years of our enterprise. The future will demand a lot from nuclear technology, given the decline in the availability of cheap fossil fuels and the expected rising need for energy. We can supply safe and reliable energy for thousands of years, if such is necessary. Uncertainty remains in the short term regarding the support of the people and of the governments who serve them. (author)

  16. Energy systems

    International Nuclear Information System (INIS)

    Up to the present the production, transmission and distribution of energy has been considered mostly as a fragmented problem; at best only subsystems have been considered. Today the scale of energy utilization is increasing rapidly, and correspondingly, the reliance of societies on energy. Such strong quantitative increases influence the qualitative nature of energy utilization in most of its aspects. Resources, reserves, reliability and environment are among the key words that may characterize the change in the nature of the energy utilization problem. Energy can no longer be considered an isolated technical and economical problem, rather it is embedded in the ecosphere and the society-technology complex. Restraints and boundary conditions have to be taken into account with the same degree of attention as in traditional technical problems, for example a steam turbine. This results in a strong degree of interweaving. Further, the purpose of providing energy becomes more visible, that is, to make survival possible in a civilized and highly populated world on a finite globe. Because of such interweaving and finiteness it is felt that energy should be considered as a system and therefore the term 'energy systems' is used. The production of energy is only one component of such a system; the handling of energy and the embedding of energy into the global and social complex in terms of ecology, economy, risks and resources are of similar importance. he systems approach to the energy problem needs more explanation. This paper is meant to give an outline of the underlying problems and it is hoped that by so doing the wide range of sometimes confusing voices about energy can be better understood. Such confusion starts already with the term 'energy crisis'. Is there an energy crisis or not? Much future work is required to tackle the problems of energy systems. This paper can only marginally help in that respect. But it is hoped that it will help understand the scope of the

  17. Nuclear energy development in the 21st century: Global scenarios and regional trends

    International Nuclear Information System (INIS)

    The International Project on Innovative Nuclear Reactors and Fuel Cycles (INPRO) was launched in 2000, on the basis of a resolution of the IAEA General Conference (GC(44)/RES/21). INPRO helps ensure that sustainable nuclear energy is available in the twenty-first century and seeks to bring together all interested Member States - both technology holders and technology users - to consider joint actions to achieve desired innovations. As of July 2010, 30 countries and the European Commission are members of INPRO. Programme Area B of INPRO, Global Vision - Scenarios and Pathways to Sustainable Nuclear Power Development, is aimed at providing a better understanding of the role of nuclear energy in the context of long term sustainable development. Its objective is to develop global and regional nuclear energy scenarios on the basis of a scientific-technical pathway analysis that lead to a global vision on sustainable nuclear energy development in the twenty-first century, and to support Member States in working towards that vision. This report presents the results of a study undertaken under Programme Area B in INPRO on Nuclear Energy Development in the Twenty-first Century: Global Scenarios and Regional Trends Studies on Nuclear Capacity Growth and Material Flow between Regions. The report does not develop a global vision for nuclear deployment per se, but presents a limited set of technical scenarios of nuclear deployment and considers their implications. It considers a global energy supply system composed of several reactor and fuel cycle types available today and of fast reactors that may be developed in the future to illustrate a possible modelling approach to identify the potential role of interregional transfer of nuclear fuel resources in supporting the global growth of nuclear energy. The study was performed with the participation of sixteen experts from nine INPRO Member States and included a dynamic simulation of material flows in nuclear energy systems using

  18. Medical systems in the last half century

    International Nuclear Information System (INIS)

    An overview is presented of the Philips activities in the field of medical systems. They began with the repair of X-ray tubes, which could no longer be sent abroad to the manufacturers during World War I. As a result, Philips soon embarked upon its own development and production of X-ray tubes, power-supply generators, and equipment for patient support and diagnosis. Typical contributions included the rotating anode, which permitted a considerable increase in power and the first ideas on an X-ray image intensifier, which greatly increased the range of capabilities of the radiologist and also reduced very considerably the dose of radiation administered to the patient. The activities in medical electronics grew strongly at first, but are not now pursued, so that Philips can concentrate on systems for medical image diagnosis and radiation therapy. Developments in this area include the gamma camera and the use of ultrasound. Equipment for radiotherapy includes, apart from the well-established X-ray tubes, equipment using radioactive cobalt, linear electron accelerators and a sealed-off neutron tube. The combination of image intensifier with television techniques not only gave the radiologist much more freedom but also led to digitization of the X-ray image. Digitization made i0305ssible to use computer techniques for image processing, which led to computerized tomography (the CT scanner) and to digital vascular imaging, and also to automated storage of X-ray images. One of the latest and very promising imaging techniques (MR) makes use of nuclear magnetic resonance. (Auth.)

  19. Public support for nuclear energy in the 21st century

    International Nuclear Information System (INIS)

    Public support for nuclear energy in the next millennium will depend on the extent to which two essential qualities are exercised now by industry and governments. These qualities are leadership and vision. However, a fear of leadership in supporting nuclear energy afflicts government officials and legislators and many industry stakeholders as well. The paper examines a root cause of this fear of leadership, namely the use of an incomplete and outdated model of public opinion on nuclear energy. The old model leads to the conclusion that expressing support for nuclear energy is politically risky. Yet a new, more complete, model of public opinion on nuclear energy is readily available from the social science research. By underestimating various types of support that exist, the old model causes stakeholders in the industry to believe that their position is unpopular. This may make them reluctant to lead the way in speaking out. Thus, politicians and government officials hear most from a small opposition. Leadership in speaking out and advocating solutions is not sufficient for assuring public support for nuclear energy in the 21st century. Under the umbrella of sustainable development, opinion leaders worldwide are assessing energy sources on the basis of ethical and environmental considerations, not just economics. Leaders in the nuclear industry for years have made a strong case for nuclear energy as a moral imperative, based on the absence of emissions and the preservation of natural resources. This case can and must be developed through active participation in world movements, by listening to all views, and by helping to define what is sustainable and just for future generations. (author)

  20. Girltalk: Energy, Climate and Water in the 21ST Century

    Science.gov (United States)

    Olson, H. C.; Osborne, V.; Bush, R.; Bauer, S.; Bourgeois, E.; Brownlee, D.; Clark, C.; Ellins, K. K.; Hempel-Medina, D.; Hernandez, A.; Hovorka, S. D.; Olson, J. E.; Romanak, K.; Smyth, R. C.; Tinker, S.; Torres-Verdin, C.; Williams, I. P.

    2011-12-01

    In preparation for Earth Science Week, The University of Texas at Austin, Striker Communications and Ursuline Academy of Dallas partnered on a GirlTalk event ("Energy, Climate and Water in the 21st Century") to create a two-day (Fri-Sat), community science symposium and open house on critical issues surrounding energy, water and climate. On Friday, over 800 high school girls and 100 teachers from Ursuline participated in hands-on activities (led by faculty, researchers and graduate students from UT Austin and professionals from the surrounding Dallas community), films and discussions, plenary sessions and an expert panel discussion. An opening talk by Dr. Hilary Olson on "Energy, Water and Climate in the 21st Century: Critical Issues for the Global Community" began the day. A series of hands-on activities, and science and technology films with discussion followed. Each girl had an individualized, modular schedule for the day, completing four of the over twenty modules offered. During lunch, Dr. Scott Tinker, Director of the Bureau of Economic Geology, presented a compelling talk on "Time, Technology and Transition", and afterwards girls attended another round of hands-on activities in the afternoon. The day ended with a panel discussion where girls could submit questions to the various participants from the day's activities. The exciting experience of a full day of GirlTalk led many high school girls to volunteer for the middle school event on the following morning (Sat.), when 150 middle school girls and their mentors (parents, teachers) attended a community-wide public event to learn about the energy, water and climate nexus. "Breakfast with a Pro" was hosted by the various professionals. Girls and their mentors enjoyed breakfast and discussion about topics and careers in the earth sciences and engineering with presenters, followed by an informal discussion with a panel of professionals. Next, girls and their mentors were each given a pre-assigned individual

  1. Wind energy developments in the 20th century

    Science.gov (United States)

    Vargo, D. J.

    1974-01-01

    Wind turbine systems of the past are reviewed and wind energy is reexamined as a future source of power. Various phases and objectives of the Wind Energy Program are discussed. Conclusions indicate that wind generated energy must be considered economically competitive with other power production methods.

  2. Russia's energy resources in the 21st century with account for their role in the world energy

    International Nuclear Information System (INIS)

    Full text: The long-term prospects (to the end of the 21st century) of Russia and world's energy development were studied to determine the extent of Russia's provision with energy resources, estimate their cost, production scale, final use and export, as well as the competitiveness of energy technologies. Bearing in mind an important role of energy resources export Russia's energy was considered as a part of world energy. The currently available data on the world's explored reserves and speculative resources of oil, natural gas and coal were systematized. According to the classification by accessibility, reliability, geological conditions of occurrence, natural quality, technical recoverability, economic efficiency of use and readiness to exploitation of all the resources were divided into 8 cost categories with an extraction cost of USD 1-20/GJ. A long-term forecast of consumption of 4 types of final energy (electric, thermal, mechanical and chemical) was made for 13 regions of the world to 2100 based on the empirical relationships between the GDP growth rate, change in the energy/GDP ratio and the economic development level achieved. According to the forecast by the year 2100 the final energy consumption of the world will increase 2-4 times and that of Russia - 1.5-2 times as compared to the current level. A 13-region model of the world's energy system was employed to calculate the optimal structure of energy technologies. The model described the energy in the form of interrelated processes (technologies) of primary energy production, its conversion to the secondary energy carriers and production of final energy. The model uses the data on several hundreds of energy technologies. The structure of energy was optimized based on the economic criterion with account for the constraints on extraction of resources, production of final energy, schedules of power supply, emissions of harmful substances, etc. The former USSR is represented in the model by 4 regions

  3. World energy strategies into the 21st century

    International Nuclear Information System (INIS)

    In mid-1990s, tighter oil supply and firmer and higher price will be projected due to the declining production in non-OPEC countries. The OPEC members have the oil production capacity of 30 million barrels a day, but last year, OPEC produced 17 million barrels a day. World oil demand was down about 600,000 barrels a day due primarily to the continued substitution with natural gas, coal and nuclear power. The conclusion of the UK coal strike also contributed to the drop of the demand for residual fuel oil. Economic growth was too sluggish to offset the substitution effect. The crude oil production from non-OPEC sources has increased, but low price will reverse the trend of non-OPEC production. Energy supply will be ample to meet the projected demand through the next decade. The annual growth rate of less than 2 % was forecast for the primary energy demand in non-communist world, assuming the economic growth of 3 % a year worldwide. The trend of the use of natural gas, coal and nuclear power is discussed. At the beginning of the 21st century, world energy will be supplied 42 % by oil, 18 % by natural gas, 24 % by coal and 8 % by nuclear power. (Kako, I.)

  4. Fusion energy for space missions in the 21st Century

    Science.gov (United States)

    Schulze, Norman R.

    1991-01-01

    Future space missions were hypothesized and analyzed and the energy source for their accomplishment investigated. The mission included manned Mars, scientific outposts to and robotic sample return missions from the outer planets and asteroids, as well as fly-by and rendezvous mission with the Oort Cloud and the nearest star, Alpha Centauri. Space system parametric requirements and operational features were established. The energy means for accomplishing the High Energy Space Mission were investigated. Potential energy options which could provide the propulsion and electric power system and operational requirements were reviewed and evaluated. Fusion energy was considered to be the preferred option and was analyzed in depth. Candidate fusion fuels were evaluated based upon the energy output and neutron flux. Reactors exhibiting a highly efficient use of magnetic fields for space use while at the same time offering efficient coupling to an exhaust propellant or to a direct energy convertor for efficient electrical production were examined. Near term approaches were identified.

  5. Nuclear power and renewable energy : Environmental partnership for the new century

    International Nuclear Information System (INIS)

    Growing world population and urbanization, together with people's aspirations for improved life, will put great demands on energy production in the new century. Deployment of new, energy-intensive technologies will further increase the pressure. Environmental issues associated with energy production and use are at the same time affecting society's preferences for different types of energy. In recent decades, concerns have grown about air and water emissions from fossil fuels. In particular, concerns about emissions of greenhouse gases, such as carbon dioxide, have the potential to fundamentally change the energy system as we know it today, The 1992 Unite Nations Framework Convention on Climate Change (UNFCC), which has been ratified by the vast majority of counties in the world, calls for stabilization of the concentration of greenhouse gases in the atmosphere. To stabilize the concentration of these gases would require global emissions of greenhouse gases to fall to less than half the level of global emissions in 1990 and to stay there forever. Non-carbon-emitting energy sources such as nuclear power and renewable energy provide one key piece in the challenge to substantially reduce greenhouse gas emissions while maintaining population and economic growth. This paper presents the role nuclear power can play in the new century as a partner to renewable energy sources within the context of global environmental issues. (author)

  6. Fusion energy as an alternative major energy source in the next century

    International Nuclear Information System (INIS)

    Fusion energy system is assessed from the viewpoints of energy resources, energy ratio, environment, and economics. It is compared with other alternative major energy sources, such as fission and solar energy systems. (author)

  7. Designing Complex Systems for the 21st Century

    DEFF Research Database (Denmark)

    2011-01-01

    The design of complex “engineered” systems in the 21st century poses a set of common challenges, to name a few, the complexity and computational cost of system analysis, the heterogeneity of information at different levels of abstraction, the various sources of uncertainties, the multidisciplinary...... preference into enterprise-driven product design. Research in multiscale design presents the significant benefits of using computational design techniques for designing novel materials, new products, and new processes with exceptional system performance across diverse application domains such as material...

  8. Chinese energy in 21st century and the way for developing nuclear energy

    International Nuclear Information System (INIS)

    A computer model, which was based on the scenarios about Chinese population and economy development, for China's long-term energy prediction in 21st century is introduced. According to the results, the total commercial energy consumption by the year of 2020 will be 5.86 to 6.36 times greater than in the year of 1987. The fossil fuel still will be main energy resources in the early stage of the next century. Because using fossil fuel has many disadvantages such as polluting environment, greenhouse effect, large volume for transportation and waste of important raw materials for chemistry industries, it could sharply decline after 2020s, as it annual consumption reaches to 2.5 to 2.66 billion tonnes of coal equivalent. The renewable energy will be increasing, but its share would decrease from 27% in the early stage to 18% in the middle of the next century. After the year of 2040, in order to meet energy demands the nuclear energy could become main energy and its share will excess 50%. China has two PWR plants under construction. Since only a small part of uranium is utilized in PWR and the uranium resource is limited, the best way for developing nuclear energy in China is to build Fast Breeder Reactors (FBR). A computer model for various developing nuclear energy patterns is calculated. The results based on these patterns show that China will meet its energy demands if an experimental FBR is built before the end of this century and the metallic fuelled FBRs are gradually developed after the year of 2010

  9. Prospect of the roles of nuclear energy in the 21st century

    International Nuclear Information System (INIS)

    World has become sensitive to the security of energy supply after experiencing oil crises and has given priority to the policies directed at developing alternatives to oil, notably coal, natural gas, and nuclear as well as encouraging rational use of energy and guiding the advent of new energy saving technologies. Nuclear energy is produced by the use of complicated technological facilities as well as uranium. Although immense technological effort was devoted before it has become widely used, the commercialization of this energy has opened a new way to assure stable supply of energy through the possession of technology, in addition to the classical way through the possession of natural resources. This is an important option to the countries like Japan which endowed almost no significant amount of natural energy resources except solar, use of which also depends on the progress in the related technology. Nuclear energy is considered as a semi-domestic source of energy in Japan and expected to account for growing share of total energy supply in coming years. Expecting that the 21st century will be a century of plutonium, technology bases for the stable nuclear energy supply system based on plutonium are under development. Prerequisite for the accomplishment of this role is the assurance of safety and public acceptance. Efforts are concentrated on further improvement of the plant technology, training and education of the personnel involved, and safety measures installed, without being content with the current excellent record of operation. Furthermore, a number of leading R and D projects are promoted aggressively with a view to pursue new possibility of nuclear energy. These R and D expected to bring about various spillover in other industries and lead the development of science and engineering in general

  10. Wind energy developments in the 20th century

    Science.gov (United States)

    Vargo, D. J.

    1974-01-01

    Wind turbine systems for generating electrical power have been tested in many countries. Representative examples of turbines which have produced from 100 to 1250 kW are described. The advantages of wind energy consist of its being a nondepleting, nonpolluting, and free fuel source. Its disadvantages relate to the variability of wind and the high installation cost per kilowatt of capacity of wind turbines when compared to other methods of electric-power generation. High fuel costs and potential resource scarcity have led to a five-year joint NASA-NSF program to study wind energy. The program will study wind energy conversion and storage systems with respect to cost effectiveness, and will attempt to estimate national wind-energy potential and develop techniques for generator site selection. The studies concern a small-systems (50-250 kW) project, a megawatt-systems (500-3000 kW) project, supporting research and technology, and energy storage. Preliminary economic analyses indicate that wind-energy conversion can be competitive in high-average-wind areas.

  11. Role of renewable energy for the 21st century

    Energy Technology Data Exchange (ETDEWEB)

    Kapur, J.C. [World Affairs Journal, New Delhi (India)

    1999-01-01

    The present high energy paradigm of consumerism and armament is almost entirely structured on non-renewable fossil fuels. This commitment is now being further extended through massive new infrastructures and life styles to the emerging new nations. Arising out of the energy concentration and constraints of the economic parameters, movement towards low density sun-based sources of energy will be slow and halting. In the final analysis the factors, which will determine the timescale and speed of shift to renewable sources of energy, would include:- the declining economic availability and increasing conflicts in the acquisition of non renewable resources, crossing of he threshold of environmental sustainability of parameters such as doubling of Carbon dioxide, ozone layer depletion and health endangering pollution, and nuclear wastes etc., the available times scale for substitution with renewables, movement away from high energy, high technology consumerist life style and their armament support system. (Author)

  12. Architecture for nuclear energy in the 21st century

    International Nuclear Information System (INIS)

    Global and regional scenarios for future energy demand have been assessed from the perspectives of nuclear materials management. From these the authors propose creation of a nuclear fuel cycle architecture which maximizes inherent protection of plutonium and other nuclear materials. The concept also provides technical and institutional flexibility for transition into other fuel cycle systems, particularly those involving breeder reactors. The system, its implementation timeline, and overall impact are described in the paper

  13. Can renewable and unconventional energy sources bridge the global energy gap in the 21st century?

    International Nuclear Information System (INIS)

    Energy experts project that global oil supplies will only meet demand until global oil production has peaked sometime between 2013 and 2020. Declining oil production after peak production will cause a global energy gap to develop, which will have to be bridged by unconventional and renewable energy sources. Nuclear, solar and hydrogen are destined to become major energy sources during the 21st century, but only if their enabling technologies improve significantly to ensure affordability and convenience of use. This paper will argue that global oil production will probably peak between 2004 and 2005, causing a serious energy gap to develop sometime between 2008 and 2010 rather than 2013-2020 as the energy experts projected. It will also argue that a transition from fossil fuels to renewable energy sources is inevitable. The paper will conclude, however, that fossil fuels with a growing contribution from nuclear energy, will still be supplying the major part of the global energy needs for most, perhaps all, of the 21st century. (author)

  14. 21st Century Renewable Fuels, Energy, and Materials

    Energy Technology Data Exchange (ETDEWEB)

    Berry, K. Joel [Kettering Univ., Flint, MI (United States); Das, Susanta K. [Kettering Univ., Flint, MI (United States)

    2012-11-29

    The objectives of this project were multi-fold: (i) conduct fundamental studies to develop a new class of high temperature PEM fuel cell material capable of conducting protons at elevated temperature (180°C), (ii) develop and fabricate a 5k We novel catalytic flat plate steam reforming process for extracting hydrogen from multi-fuels and integrate with high-temperature PEM fuel cell systems, (iii) research and develop improved oxygen permeable membranes for high power density lithium air battery with simple control systems and reduced cost, (iv) research on high energy yield agriculture bio-crop (Miscanthus) suitable for reformate fuel/alternative fuel with minimum impact on human food chain and develop a cost analysis and production model, and (v) develop math and science alternative energy educator program to include bio-energy and power.

  15. A Century of changes for Razelm-Sinoe Lagoon System

    Science.gov (United States)

    Scrieciu, Marian-Albert; Stanica, Adrian

    2014-05-01

    A Century of changes for Razelm-Sinoe Lagoon System Marian-Albert Scrieciu (a), Adrian Stanica (a) (a) National Institute of Marine Geology and Geoecology e GeoEcoMar, Str. Dimitrie Onciul 23e25, Sector 2, 024053 Bucharest, Romania Razelm-Sinoe Lagoon System, situated in the NW part of the Black Sea, in tight connection with the Danube Delta, has been subject to major changes due to human interventions in the past century. These changes have resulted into a complete change of the Lagoon specific ecosystems compared to its pristine state. In its natural state, as brackish - transitional environment, Antipa (1894) mentions Razelm Lagoon as one of the places with the greatest fisheries around the Black Sea coast (about 1879 - 1884, there were approximately 10,000 fishermen, all working on the Razelm Sinoe Lagoon System). Starting with the end of the XIXth Century, new canals were dug and existing channels were dredged in order to develop tighter connections with the Danube River. The natural inlet of Portita was blocked four decades ago and connections between the various parts of the lagoon system were controlled by the building of locks and sluices. The 2 inlets of Sinoe Lagoon were also controlled during early 1980s. Under these conditions, the lagoon ecosystem changed from brackish towards freshwater, with major effects on the existing flora and fauna. The period of brutal interventions ended in 1989 and the Razelm-Sinoe Lagoon System became part of the Danube Delta Biosphere Reserve in 1991, with a strict policy of nature protection and restoration. Spatial planning has been the major management option for the entire reserve, lagoon system included. Plans for sustainable development of the Razelm-Sinoe Lagoon System have been built in a participative manner, involving the local stakeholders, as part of FP7 ARCH project. Special attention has been given to impacts of climate change. The study presents the vision for the development Razelm-Sinoe Lagoon System over

  16. Energy to the 21st century. Vol. 1

    International Nuclear Information System (INIS)

    The conference focused on advanced power cycles for fusion, aircraft electrical power systems, aircraft, missile, and launch facility batteries, aerospace high voltage technology, NiCd space batteries, aerospace power system simulation, space photovoltaics, and solar arrays, fossil fuels, and fuel cells. Papers were presented on photocell heat engine solar power systems, power technology for fusion reactors, Comsat/Intelsat Ni-H battery technology, GaAs solar cells for space applications, Pioneer Venus multiprobe and orbiter solar array performance, lead-acid batteries for energy storage, the near-term hybrid vehicle, coal liquefaction and gasification, and synfuels from fusion

  17. Which energy for the 21 century transports; Quelles energies pour les transports au 21. siecle?

    Energy Technology Data Exchange (ETDEWEB)

    Bauquis, P.R.; Lovelock, J

    2005-07-01

    With more than 95% of the energy consumption realized by the petroleum, the transportation sector represents 20% of the world energy consumption. How will be assure the energy need of this sector for the 21 century? How control the greenhouse gases emissions and in particular the CO{sub 2} by the control of the transportation sector? This paper aims to answer the first question taking into account the bond second one. It analyzes the today situation and scenario for 2020 and 2050, the possible substitution fuels, the hybrid vehicles, the hydrogen fuel and the electric power vehicles. (A.L.B.)

  18. Nuclear energy for the 21. century; Energie nucleaire pour le 21. siecle

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-03-15

    This document gathers 5 introductory papers to this conference about nuclear energy for the 21. century: the French energy policy during the last 30 years (situation of France with respect to the energy supply and demand, main trends of the French energy policy, future of the French nuclear policy); presentation of IAEA (technology transfer, nuclear safety, non-proliferation policy, structure and financial resources, council of governors, general conference, secretariat); nuclear power and sustainable development; promoting safety at nuclear facilities (promoting safety, basics of safety, safety at the design stage, risk management, regulatory control and efficiency of the regulation organization, role of IAEA); nuclear energy today (contribution to sustainable development, safety, best solution for the management of radioactive wastes, future of nuclear energy). (J.S.)

  19. Discussion on the development of nuclear energy in the next century based on fuel-cycle analysis and economic assessment

    International Nuclear Information System (INIS)

    The necessity of developing nuclear energy, sepecially studing and developing the hybrid reactors in the next century in China, has been discussed. The fuel-cycle analysis and economic assessment have been done for various systems of several types of reactors. Some conclusions have been gained. The development of nuclear energy, especially the hybrid reactors, will take an important role in developing China's national economy, and it mustn's be too late to develop hybrid reactors

  20. Energy End-Use Technologies for the 21st Century

    Energy Technology Data Exchange (ETDEWEB)

    Gehl, S; Haegermark, H; Larsen, H; Morishita, M; Nakicenovic, N; Schock, R N; Suntola, T

    2005-04-13

    communication technologies. For long-term impact, significant areas include fuel cells, hydrogen fuel, and integrated multi-task energy systems.

  1. Japan Atomic Energy Research Institute in the 21st century

    International Nuclear Information System (INIS)

    Major nuclear research institutes in Japan are the Japan Atomic Energy Research Institute (JAERI), Nuclear Cycle Development Institute (JNC), National Research Institute of Radiological Science (NIRS), and the Institute of Physical and Chemical Research (RIKEN). In the 50s and 60s JAERI concentrated on the introduction of nuclear technology from overseas. Energy security issues led to the development of a strong nuclear power programme in the next two decades resulting in Japan having 50 light water cooled nuclear power plants in operation. Japan also worked on other reactor concepts. The current emphasis of JAERI is on advanced reactors and nuclear fusion. Its budget of 270 million US$ supports five research establishments. JAERI has strong collaboration with industry and university system on nuclear and other advanced research topics (neutron science, photon science). In many areas Japan has strong international links. JAERI has also been transferring know-how on radioisotope and radiation applications to the developing countries particularly through IAEA-RCA mechanisms. (author)

  2. a GIS of SARDINIA'S Coastal Defense System (xvi - XVIII Century)

    Science.gov (United States)

    Deidda, M.; Musa, C.; Vacca, G.

    2015-06-01

    The use of GIS as a tool for archival, analysis and representation of geographic information has become significantly popular in many scientific fields that are directly concerned with the "territory" as their object of study. The field of application of GIS, however, has expanded also in other areas, such as those related to humanities and architecture, in which the territory is studied in an "indirect" mode because it constitutes a kind of substrate on which to develop a specific spatial analysis for particular purposes. Among these areas are to be included certainly archeology and restoration, fields in which the GIS has become a useful tool for historical studies. In this work we present a GIS developed for the study of the historical and territorial coastal defense system of Sardinia (16th - 18th century), in order to respond to the need to store, analyze and efficiently manage the information regarding cultural heritage and landscape heritage such as that consisting of the coastal defensive towers of Sardinia. This defensive system, in fact, was composed by over 100 towers positioned around the entire coastal perimeter of Sardinia, of which more than 90 still exist today. Their position was planned on the basis of the following criteria: - Warning the neighboring towers about the sighting of enemy ships - Protecting coasts located near the towns - Monitoring the water sources near the coast - Allowing for the full visibility of the coasts of any morphology With this study we also verified, through the use of high resolution and high accuracy DTM (LiDAR) and the topographic databases, whether the positioning criteria specified in the design of the system were respected and effective.

  3. Research of nuclear energy on the 21st Century Center of Excellence (COE) Program

    International Nuclear Information System (INIS)

    COE is an abbreviation of 'Center of Excellence' and the '21st Century COE Program' is project begun by the Ministry of Education, Culture, Sports, Science, and Technology (MECSST) to make a trigger to grow some research strongholds with international competitive power by activating mutual competition of collages and universities. This program aims to form research and educational strongholds with the highest level in the world at every scholarship fields to a collage or a university in Japan, to intend to grow creative specialists capable of upgrading research level and leading research world, and to progress strong assistance to promote collages- and universities-making with international competitive power and individuality. In 2003 fiscal year, two research programs related to nuclear energy were selected by the Committee of 21st Century COE Program such as 'an innovative reactor supporting suitable development of the world' in the mechanical, engineering and other technology field and 'future to be cultivated by isotopes' in the interdisciplinary, composite and new region field. The first program aims to construct the concept of system of innovative reactor and separation nuclear transformation for zero release of radioactive waste and to research the necessary technologies. The second program is covered isotope science and it consists of two main researches such as 1) the fundamental researches: a) separation and creation of isotopes, b) measurement technologies with nano size and c) isotope materials, and 2) the harmonized development researches: a) environment and bioscience and b) culture information and creation of quantum computer. (S.Y.)

  4. Nuclear energy and materials in the 21st century

    International Nuclear Information System (INIS)

    The Global Nuclear Vision Project at the Los Alamos National Laboratory is examining a range of long-term nuclear energy futures as well as exploring and assessing optimal nuclear fuel-cycle and material strategies. An established global energy, economics, environmental (E3) model has been adopted and modified with a simplified, but comprehensive and multi-regional, nuclear energy module. Consistent nuclear energy scenarios are constructed, where future demands for nuclear power are projected in price competition with other energy sources under a wide range of long-term (∼2100) demographic, economic, policy, and technological drivers. A spectrum of futures is examined at two levels in a hierarchy of scenario attributes in which drivers are either external or internal to nuclear energy. The result reported examine departures from a basis scenario and are presented in the following order of increasing specificity: (a) definition and parametric variations of the basis scenario; (b) comparison of the basis scenario with other recent studies; (c) parametric studies that vary upper-level hierarchical scenario attributes (external drivers); and (d) variations of the lower-level scenario attributes (internal drivers). Impacts of a range of nuclear fuel-cycle scenarios are reflected back to the higher-level scenario attributes that characterize particular nuclear energy scenarios. Special attention is given to the role of nuclear materials inventories (in magnitude, location, and form) and their contribution to the long-term sustainability of nuclear energy, the future competitiveness of both conventional and advanced nuclear reactors, and proliferation risk

  5. Nuclear energy: research and outlook for the 21. century

    International Nuclear Information System (INIS)

    This document gathers the 19 papers and slides presented at this conference about the future of nuclear energy. 4 sessions were organized: 1) context and prospective for nuclear power, 2) development of light water reactors, 3) development of future nuclear reactors, and 4) needs in experimental reactors and an overview of fusion energy

  6. Nuclear energy and materials in the 21st century

    International Nuclear Information System (INIS)

    The Global Nuclear Vision Project at the Los Alamos National Laboratory is examining a range of long- term nuclear energy futures as well as exploring and assessing optimal nuclear fuel-cycle and material strategies. An established global energy, economics, environmental (E3) model has been adopted and modified with a simplified, but comprehensive and multi-regional, nuclear energy module. Consistent nuclear energy scenarios are constructed, where future demands for nuclear power are projected in price competition with other energy sources under a wide range of long-term (∼2100) demographic, economic, policy, and technological drivers. A spectrum of futures is examined at two levels in a hierarchy of scenario attributes in which drivers are either external or internal to nuclear energy. The results reported examine departures from a ''basis scenario'' and are presented in the following order of increasing specificity: a) definition and parametric variations the basis scenario; b) comparison of the basis scenario with other recent studies; c) parametric studies that vary upper-level hierarchical scenario attributes (external drivers); and d) variations of the lower-level scenario attributes (internal drivers). Impacts of a range of nuclear fuel cycle scenarios are reflected back to the higher-level scenario attributes that characterize particular nuclear energy scenarios. Special attention is given to the role of nuclear materials inventories (in magnitude, location, and form) and their contribution to the long-term sustainability of nuclear energy, the future competitiveness of both conventional and advanced nuclear reactors, and proliferation risk. (author)

  7. Energies of your century: from crises to mutation

    International Nuclear Information System (INIS)

    There is no more doubt that the energy crisis is threatening the future of our societies. Since the industrial revolution, our economic development is mainly based on the energy abundance. Moreover, the reality of the global warming has been demonstrated and requires serious answers. These two questions foresee deep changes in our lifestyles while several questions remain to be answered: is the situation really catastrophic? What about nuclear energy? It is important to make a serious status of these questions because of the economical, financial and political interests involved, and because each lobby preaches its own analysis and solutions. This book proposes a global approach of the energy question. The energy crisis requires to make society choices to which many citizens agree with but that politicians do not take enough into consideration. (J.S.)

  8. Reliable energy in th 21st century; Sichere Energie im 21. Jahrhundert

    Energy Technology Data Exchange (ETDEWEB)

    Petermann, J. (ed.)

    2006-07-01

    Energy dominates our future. Climate is in danger, oil century will end. What's following? The exciting manual on the actual energy debate is prepared. Journalists and scientists offer data, facts and backgrounds: How do we secure the energy supply, without danger environment? Clearly written, by effortful info-graphics illustrated: a book with debate potential. An 'energy bible' for everybody. Energy is the drive for world economy and the base for global prosperity. Dramatical price amounts for power, gasoline and heating energy rouse consumers. The demand for oil increases, however stocks are shrinking, the era of fossil fuels finishes. CO2 burdens the ecosphere. The dependency of political instable world regions, exploiting oil and gas, increases. Energy economy and policy are faced with difficult decisions: How to face climate change? Does the world need nuclear power? How do we succeed to the change to renewable energy sources? The book - unanimously commended by reviewers - shows ways, how energy supply will be secured sustainably. (orig./GL) [German] Energie bestimmt unsere Zukunft. Das Klima ist in Gefahr, das Oelzeitalter geht zu Ende. Was kommt danach? Das spannende Handbuch zur aktuellen Energie-debatte - in ueberarbeiteter Neuauflage. Journalisten und Wissenschaftler liefern Daten, Fakten und Hintergruende: Wie sichern wir den Energie- nachschub, ohne die Umwelt zu gefaehrden? Verstaendlich geschrieben, mit aufwaendigen Info-Grafiken illustriert: ein Buch mit Debatten-Potenzial. Die 'Energie-Bibel' fuer jedermann. Energie ist der Motor der Weltwirtschaft und die Basis fuer globalen Wohlstand. Teils dramatische Preisanstiege fuer Strom, Benzin und Heizenergie ruetteln die Verbraucher wach. Die Nachfrage nach Erdoel steigt, doch die Vorraete schrumpfen, das Zeitalter fossiler Energien geht zu Ende. CO2 belastet die Oeko-sphaere. Die Abhaengigkeit von politisch instabilen Weltregionen, in denen Oel und Gas gefoerdert werden

  9. Some ideas on the energy demand in the 21. century

    International Nuclear Information System (INIS)

    The author reviews different scenarios to quench the worldwide demand for energy. 4 scenarios have been studied for the 2000-2100 period. The scenarios differ on the importance given to concepts like: -) the behaviour towards future generations, -) the solidarity between rich and poor countries, -) the acknowledgement of the climate change, -) the risk of energy dearth, -) the improvement of energy efficiency, -) the necessity of gross national product growth, -) the public acceptance of nuclear power, and -) CO2 sequestration. One of the scenarios is extremely courageous: politicians and population are aware of the great problems that are looming and take the right decisions quite early. This scenario leads to a demand of 18 Gtep/year in 2100. In the worst scenario people are reluctant to any change in their way to use energy, this scenario leads to a demand of 49 Gtep/year

  10. Nuclear energy and materials in the 21st century

    Energy Technology Data Exchange (ETDEWEB)

    Krakowski, R.A.; Davidson, J.W.; Bathke, C.G. [and others

    1997-05-01

    The Global Nuclear Vision Project at the Los Alamos National Laboratory is examining a range of long-term nuclear energy futures as well as exploring and assessing optimal nuclear fuel-cycle and material strategies. An established global energy, economics, environmental (E{sup 3}) model has been adopted and modified with a simplified, but comprehensive and multi-regional, nuclear energy module. Consistent nuclear energy scenarios are constructed, where future demands for nuclear power are projected in price competition with other energy sources under a wide range of long-term ({approx}2100) demographic, economic, policy, and technological drivers. A spectrum of futures is examined at two levels in a hierarchy of scenario attributes in which drivers are either external or internal to nuclear energy. The result reported examine departures from a basis scenario and are presented in the following order of increasing specificity: (a) definition and parametric variations of the basis scenario; (b) comparison of the basis scenario with other recent studies; (c) parametric studies that vary upper-level hierarchical scenario attributes (external drivers); and (d) variations of the lower-level scenario attributes (internal drivers). Impacts of a range of nuclear fuel-cycle scenarios are reflected back to the higher-level scenario attributes that characterize particular nuclear energy scenarios. Special attention is given to the role of nuclear materials inventories (in magnitude, location, and form) and their contribution to the long-term sustainability of nuclear energy, the future competitiveness of both conventional and advanced nuclear reactors, and proliferation risk.

  11. Methane as an energy source for the 21st century

    OpenAIRE

    Nakicenovic, N.

    2002-01-01

    Today, fossil fuels supply about 80% of global primary energy. The consequences are severe for human health from indoor and regional air pollution, acidification due to sulphur and nitrogen oxide emissions and climate change due to rapidly growing greenhouse gas emissions. Therefore, there is a clear need to improve the efficiency and the environmental compatibility of fossil technologies, shift to fossil energy sources with lower environmental impacts such as natural gas, or shift awa...

  12. Energy use and sustainable development in the 21st century - Local action and national strategies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-07-01

    This report sums up the conference ''Energy use and sustainable development in the 21st century - Local action and national strategies'' that was held in Oslo in 1999. The purpose of the conference was to stimulate the development of climate- and energy strategies and actions that support a sustainable use of energy locally and regionally. The report discusses important points from the various contributions and from the workshops of the conference.

  13. The energy for the 21. century: techniques, economy and environment

    International Nuclear Information System (INIS)

    12 papers have been presented. 1) Climate changing. The atmospheric circulation model coupled to the ocean model is the most powerful current tool to explain climate processes and to validate possible climate evolutions. 2) Health hazards due to the combustion of fossil fuels. The effects of atmospheric particles on mortality, cancer risks and on respiratory organs, are considered. 3) The evaluation of external effects of transport on the environment. The paper gives examples of exposure-response function relating to impacts on the built environment, atmospheric visibility, vegetation and human health. 4) Energy consumption and economic growth. 5) Impact of low radiation doses on human health. 6) Hydrogen: production methods and costs. 7) Fossil energies reserves: incertitude on definition, volume and forecasting. 8) Energetic valorization of biomass by thermo-chemical way. 9) Technical and economic aspects of wind energy. 10) Nuclear energy: the French example. 11) The future of photovoltaic energy, its actual growth rate is about 25-35 % a year and its main asset is to benefit technological progress that allows a sharp 50 % cut in costs every 10 years. 12) Fuel cells, their operating principle, the fuel used, their applications and perspective. (A.C.)

  14. Infusing Creativity and Technology in 21st Century Education: A Systemic View for Change

    Science.gov (United States)

    Henriksen, Danah; Mishra, Punya; Fisser, Petra

    2016-01-01

    In this article, we explore creativity alongside educational technology, as fundamental constructs of 21st century education. Creativity has become increasingly important, as one of the most important and noted skills for success in the 21st century. We offer a definition of creativity; and draw upon a systems model of creativity, to suggest…

  15. Ottoman Greek Education System and Greek Girls' Schools in Istanbul (19th and 20th Centuries)

    Science.gov (United States)

    Daglar Macar, Oya

    2010-01-01

    Modernization efforts in education, which were initiated in the 19th century, can be seen as forerunners of the modernization attempts in the Republic period. In this article, Greek education system in the Ottoman Empire will be discussed and the effects and importance of the changes observed in Greek girls' education in 19th and 20th centuries on…

  16. Nuclear energy in Israel towards the 21st century

    International Nuclear Information System (INIS)

    Nuclear energy utilization has been facing substantial difficulties worldwide in the last decade. Safety problems led to public distrust and economic performance did not always fulfill the utilities expectations. However, recent events in Israel and worldwide call for a review of national energy policy. Nuclear power should be considered a viable solution to energy problems which may confront us in the future. The main objective of incorporating nuclear power in Israel's energy program is to minimize its total dependence on imported fossil fuel, which may be hindered by fluctuations in fuel prices and disruptions in regular supply. In order to achieve this goal, 50% of the electric power generation should be obtained from nuclear power plants. Thus, long-term planning is required, expending over a period of 25 to 30 years, for implementation of a nuclear program. The projected Israeli installed capacity for 1995 is 5600 MW at an annual development rate of 4%. If this trend continues, it will require installation of approximately 5 units, 600 MW each, every ten years, about half of which should be nuclear. It is in Israel's interest to opt for an advanced type of nuclear reactor, that could provide many important advantages, e.g. improved safety, prolonged life, high load factor, etc. A high local participation in the planning and construction of plant is also desirable. (author)

  17. Prospects of nuclear energy development looking from the three major events concerning nuclear energy at the joint of two centuries

    International Nuclear Information System (INIS)

    Three major events concerning nuclear energy development happened at the joint of two centuries: the technic policy research for the fourth generation of nuclear power; the initiatives of nuclear energy development proposed by Russian president; and the national nuclear energy policy issued by American administration. The prospects of global nuclear energy development were presented in the paper, and proposals to develop Chinese nuclear power provided

  18. The energy challenges in the 21. century according to the World Energy Council (WEC)

    International Nuclear Information System (INIS)

    The World Energy Council (WEC) published a study in 1993 concerning energy for the future. The predictions made at that time are still valid, and the decision was made to complete the document by explaining the lines of action to be followed for the future. The time frame selected was 2020, with a larger horizon extending to the first half of the century. Some assumptions were modified. The first one concerned the expected world population in 2020. It is now expected to reach 8 billion in 2050 versus the 10 billion previously predicted, with the bulk of the increases being felt in urban areas. Economic growth was slower than expected during the past ten years and is now expected to continue at 3 per cent expansion per annum, with increasing inequities between North and South in developed countries. The protection of the environment is gaining momentum, from local concerns such as air pollution and the control of urban, industrial, and agricultural pollution, to regional concerns like acid rains to global concerns about climate changes. The WEC elaborated on the energy challenges by grouping them into three categories: accessibility, availability, and acceptability. Accessibility means supplying an additional 2 billion people with commercial energy in the world by 2020. All energy resources will be called upon. It also represents an economic challenge. Availability is concerned with continuity and quality of the energy supplied. Once again, all resources will be required, with necessary diversification of sources and supply lines. Renewable energies might be part of the solution, but the costs inherent to their exploitation imposes constraints. Acceptability is related to the use of certain technologies for the production of energy, like nuclear technology for the production of electricity. In the case of fossil fuels, natural gas is the number one choice for a number of applications. Individual transportation needs will continue to rely primarily on petroleum. Coal

  19. The global energy context: Chances and challenges for the 21st century

    International Nuclear Information System (INIS)

    Energy is the driving force towards economic and social development. Global demand for energy will keep growing for many years to come due to ongoing, although reduced population growth, and due to the needs of up to 2 billion people who are still without access to commercial energy. To meet this growing demand for energy, all options have to be kept open, with fossil fuels, nuclear and hydro dominating the energy mix for the next decades, and 'new' renewables coming in only slowly. Considering the resulting strain on the environment, and looking at existing disparities in energy supply, the next few decades will not be free of tensions. A turning point may appear in the mid 21st century with world population coming to a halt, distinctly improved energy efficiency also in the Developing World, and with new technologies available. Thus, mainly challenges will determine the first half of the century, whereas chances are on hand for the second half of the century - if we act now. The single most important instrument to meet these challenges and to take advantage of the chances is a concentrated move towards energy efficiency and innovation, supported by market reform and appropriate regulation. (author)

  20. The global energy context -- chances and challenges for the 21st century

    International Nuclear Information System (INIS)

    Energy is the driving force towards economic and social development. Global demand for energy will keep growing for many years to come due to ongoing, although reduced population growth, and due to the needs of up to 2000 million people who are still without access to commercial energy. To meet this growing demand for energy, all options have to be kept open, with fossil fuels, nuclear and hydro dominating the energy mix for the next decades, and 'new' renewables coming in only slowly. Considering the resulting strain on the environment, and looking at existing disparities in energy supply, the next few decades will not be free of tensions. A turning point may appear in the mid 21st century with world population coming to a halt, distinctly improved energy efficiency in the Developing World, and with new technologies available. Thus, mainly challenges will determine the first half of the century, whereas chances are on hand for the second half of the century - if we act now. The single most important instrument to meet these challenges and to take advantage of the chances is a concentrated move towards energy efficiency and innovation, supported by market reform and appropriate regulation. (author)

  1. Green oil : clean energy for the 21st century?

    Energy Technology Data Exchange (ETDEWEB)

    Das, S.

    2009-07-01

    In order to end its dependency on foreign oil supplies, Canada must consider the use of various renewable and non-renewable energy resources. A balanced approach between economic development and environmental stewardship is needed to ensure that Canada reduces its greenhouse gas (GHG) emissions while continuing to grow. This book discussed the political implications of Canada's oil sands resources, and argued that sustainable development of the resources will help Canada to play a leading role in the transition from a high carbon economy to a a clean energy future. The book was divided into the following 8 chapters: (1) the tyranny of oil, (2) the reluctant superpower, (3) tar sands or oil sands, (4) pollution, emissions, solutions, (5) an obligation of stewardship, (6) the way ahead, (7) the green future, and (8) green oil. 39 refs.

  2. Hemispheric energy trade: agenda for the 21. century

    International Nuclear Information System (INIS)

    The developments and perspectives of energy trade in the Western Hemisphere were discussed from a Venezuelan point of view. Agreements such as the ANDEAN PACT, NAFTA, and MERCOSUR were examples of economic integration which strengthen trade and investments between North America and Latin America. Other possibilities for collaboration between North America and Latin America were explored. Efforts made by Venezuela in contributing to opening the process, particularly in the oil industry, were highlighted. 1 tab., 13 figs

  3. Strategic Importance of Energy Sources of Middle East Region for the 21st Century World Economy

    OpenAIRE

    Altay, Hüseyin; Nugay, Ulaş

    2013-01-01

    The importance of energy sources which started to become the most strategic input for the countries in the 20th century gradually increases. De-spite of the increase of demand and dependence to the energy at this ratio, energy resources speedily decrease. This situation caused that all the atten-tions focused on energy regions. Middle East is one of the most important of these regions. Within this framework, this study aims to explain the impor-tance of Middle East energy sources of 21st cent...

  4. 21st Century Coal: Advanced Technology and Global Energy Solution

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2013-06-01

    Coal currently supplies with more than 40% of the world electricity consumption and it essential input of around 70% of world steel production, representing around 30% of the world primary energy supply. This is because coal is cheap, abundant, accessible, widely distributed and easy energy to transport, store and use. For these features, coal is projected to be intensively used in the future. Production and use of coal present a series of issues throughout the whole value chain. While existing technology allows addressing most of them (safety at work, land restoration, mercury, NOx and sulphur emissions avoidance, etc.), CO2 emissions continues to be the biggest challenge for coal use in the future. This report focuses on the technology path to near-zero emissions including useful insights in advanced coal power generation technologies and Carbon Capture, Utilisation and Storage, a promising technology with a large potential which can push Carbon Capture and Storage competitiveness. In addition, the report shows the features of the new generation of coal-fired power plants in terms of flexibility for dynamic operation and grid stability, requirements increasingly needed to operate on grids with significant wind and solar generation.

  5. The future of energy security in the 21st Century

    Science.gov (United States)

    Gupta, Rajan

    2006-10-01

    Energy is essential for modern life and is a critical resource that we take for granted. Economies and security of nations depend on reliable and cost-effective access. As the world transitions from conventional oil and natural gas to nuclear, renewables, and unconventional sources we are increasingly confronted by many unsettling questions. Will there be enough cheap oil and gas for preserve the standard of living in the developed world and allow the industrializing world to develop? Will renewable sources provide a significant fraction of our energy needs in the near future? Is global warming already happening as a result of our consumption of fossil fuels? If there is a resource crunch before new sources come on line, will there be conflict or global cooperation? This talk will attempt to answer these questions by examining the global oil and gas resources, geopolitics, and key science and technology issues that need to be addressed by the global community with cooperation and a sense of urgency.

  6. Innovative nuclear energy systems roadmap

    International Nuclear Information System (INIS)

    Developing nuclear energy that is sustainable, safe, has little waste by-product, and cannot be proliferated is an extremely vital and pressing issue. To resolve the four issues through free thinking and overall vision, research activities of 'innovative nuclear energy systems' and 'innovative separation and transmutation' started as a unique 21st Century COE Program for nuclear energy called the Innovative Nuclear Energy Systems for Sustainable Development of the World, COE-INES. 'Innovative nuclear energy systems' include research on CANDLE burn-up reactors, lead-cooled fast reactors and using nuclear energy in heat energy. 'Innovative separation and transmutation' include research on using chemical microchips to efficiently separate TRU waste to MA, burning or destroying waste products, or transmuting plutonium and other nuclear materials. Research on 'nuclear technology and society' and 'education' was also added in order for nuclear energy to be accepted into society. COE-INES was a five-year program ending in 2007. But some activities should be continued and this roadmap detailed them as a rough guide focusing inventions and discoveries. This technology roadmap was created for social acceptance and should be flexible to respond to changing times and conditions. (T. Tanaka)

  7. Editorial: Digital systems supporting cognition and exploratory learning in 21st century

    Directory of Open Access Journals (Sweden)

    Demetrios G. Sampson

    2014-06-01

    Full Text Available Digital systems and digital technologies are globally investigated for their potential to transform learning and teaching towards offering unique learning experiences to the 21st century learners. This Special Issue on Digital Systems supporting Cognition and Exploratory Learning in 21st Century aims to contribute to the dialogue between the educational technology and educational psychology research community and the educational practitioners on current issues towards large scale take-up of educational technology.

  8. Sustainability, energy policy, climatic change, world food supply. Political and legal challenges of the 21th century

    International Nuclear Information System (INIS)

    The book on sustainability, energy policy, climatic change, world food supply as political challenges in the 21th century includes contributions on the following topics: sustainability and environment, energy and climatic change, agriculture and world food supply.

  9. Green Heat and Power. Eco-effective Energy Solutions in the 21st Century

    International Nuclear Information System (INIS)

    Norway has emerged as a major producer of oil, gas, and hydropower during the lifetimes of the authors of this report. Our accumulated experience in working on environmental conservation spans approximately 50 years, with our main area of concentration being energy and the environment. Although river systems have been harnessed into pipes and many oil fields have been developed, on the threshold of a new century we feel confident that the majority would agree that our future energy needs cannot be based and sustained on the exploitation of the natural environment. This report outlines how Norway can reposition itself to become an important energy supplier that can help solve environmental problems instead of create them. It is also a guide to what we think is important to know about energy and the challenges facing the environment. It is all too easy to become swamped by information, which is why we have elected to focus firmly on essentials. We not only look at the solutions of the past, we look into what the future may bring. New thinking and approaches to the problems that are as yet little known are outlined in detail. We seek to present solutions developed from a more integrated ''big-picture'' perspective. Our target audience is people with a general interest in the subject, individuals who work with these kinds of challenges on a day-to-day basis, politicians and other decision-makers, and people who are actively engaged in research and development. This report represents a stark contrast to the report published by the government-appointed energy co mission, a commission which was unable to demonstrate how Norway could both increase energy production and decrease energy consumption, while simultaneously reducing greenhouse-gas emissions in compliance with our international commitments. The report documents that up until the year 2020, Norway can free up one sixth of the electricity produced, reduce CO2 emissions by over 50%, produce 50 TWh of renewable

  10. Green Heat and Power. Eco-effective Energy Solutions in the 21st Century

    International Nuclear Information System (INIS)

    Norway has emerged as a major producer of oil, gas, and hydropower during the lifetimes of the authors of this report. Our accumulated experience in working on environmental conservation spans approximately 50 years, with our main area of concentration being energy and the environment. Although river systems have been harnessed into pipes and many oil fields have been developed, on the threshold of a new century we feel confident that the majority would agree that our future energy needs cannot be based and sustained on the exploitation of the natural environment. This report outlines how Norway can reposition itself to become an important energy supplier that can help solve environmental problems instead of create them. It is also a guide to what we think is important to know about energy and the challenges facing the environment. It is all too easy to become swamped by information, which is why we have elected to focus firmly on essentials. We not only look at the solutions of the past, we look into what the future may bring. New thinking and approaches to the problems that are as yet little known are outlined in detail. We seek to present solutions developed from a more integrated ''big-picture'' perspective. Our target audience is people with a general interest in the subject, individuals who work with these kinds of challenges on a day-to-day basis, politicians and other decision-makers, and people who are actively engaged in research and development. This report represents a stark contrast to the report published by the government-appointed energy co mission, a commission which was unable to demonstrate how Norway could both increase energy production and decrease energy consumption, while simultaneously reducing greenhouse-gas emissions in compliance with our international commitments. The report documents that up until the year 2020, Norway can free up one sixth of the electricity produced, reduce CO2 emissions by over 50%, produce 50 TWh of renewable

  11. Green Heat and Power. Eco-effective Energy Solutions in the 21st Century

    Energy Technology Data Exchange (ETDEWEB)

    Palm, T.; Buch, C.; Kruse, B; Sauar, E.

    2000-06-01

    Norway has emerged as a major producer of oil, gas, and hydropower during the lifetimes of the authors of this report. Our accumulated experience in working on environmental conservation spans approximately 50 years, with our main area of concentration being energy and the environment. Although river systems have been harnessed into pipes and many oil fields have been developed, on the threshold of a new century we feel confident that the majority would agree that our future energy needs cannot be based and sustained on the exploitation of the natural environment. This report outlines how Norway can reposition itself to become an important energy supplier that can help solve environmental problems instead of create them. It is also a guide to what we think is important to know about energy and the challenges facing the environment. It is all too easy to become swamped by information, which is why we have elected to focus firmly on essentials. We not only look at the solutions of the past, we look into what the future may bring. New thinking and approaches to the problems that are as yet little known are outlined in detail. We seek to present solutions developed from a more integrated ''big-picture'' perspective. Our target audience is people with a general interest in the subject, individuals who work with these kinds of challenges on a day-to-day basis, politicians and other decision-makers, and people who are actively engaged in research and development. This report represents a stark contrast to the report published by the government-appointed energy co mission, a commission which was unable to demonstrate how Norway could both increase energy production and decrease energy consumption, while simultaneously reducing greenhouse-gas emissions in compliance with our international commitments. The report documents that up until the year 2020, Norway can free up one sixth of the electricity produced, reduce CO2 emissions by over 50%, produce 50

  12. Laboratories for the 21st Century: Best Practices; Energy Recovery in Laboratory Facilities (Brochure)

    Energy Technology Data Exchange (ETDEWEB)

    2012-06-01

    This guide regarding energy recovery is one in a series on best practices for laboratories. It was produced by Laboratories for the 21st Century ('Labs 21'), a joint program of the U.S. Environmental Protection Agency and the U.S. Department of Energy. Laboratories typically require 100% outside air for ventilation at higher rates than other commercial buildings. Minimum ventilation is typically provided at air change per hour (ACH) rates in accordance with codes and adopted design standards including Occupational Safety and Health Administration (OSHA) Standard 1910.1450 (4 to 12 ACH - non-mandatory) or the 2011 American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) Applications Handbook, Chapter 16 - Laboratories (6 to 12 ACH). While OSHA states this minimum ventilation rate 'should not be relied on for protection from toxic substances released into the laboratory' it specifically indicates that it is intended to 'provide a source of air for breathing and for input to local ventilation devices (e.g., chemical fume hoods or exhausted bio-safety cabinets), to ensure that laboratory air is continually replaced preventing the increase of air concentrations of toxic substances during the working day, direct air flow into the laboratory from non-laboratory areas and out to the exterior of the building.' The heating and cooling energy needed to condition and move this outside air can be 5 to 10 times greater than the amount of energy used in most office buildings. In addition, when the required ventilation rate exceeds the airflow needed to meet the cooling load in low-load laboratories, additional heating energy may be expended to reheat dehumidified supply air from the supply air condition to prevent over cooling. In addition to these low-load laboratories, reheat may also be required in adjacent spaces such as corridors that provide makeup air to replace air being pulled into negative-pressure laboratories

  13. Energy systems security

    CERN Document Server

    Voeller, John G

    2014-01-01

    Energy Systems Security features articles from the Wiley Handbook of Science and Technology for Homeland Security covering topics related to electricity transmission grids and their protection, risk assessment of energy systems, analysis of interdependent energy networks. Methods to manage electricity transmission disturbances so as to avoid blackouts are discussed, and self-healing energy system and a nano-enabled power source are presented.

  14. Sustainable energy development: a challenge for Asia and the Pacific region in the 21st century

    International Nuclear Information System (INIS)

    The main challenge to energy policy makers in the 21st century is how to develop and manage adequate, affordable and reliable energy services on a sustainable manner to fuel social and economic development. About 60 per cent of the world's two billion population, who do not have access to modern energy services, live in Asia and the Pacific region. The demand for energy is expected to continue growing at a high rate well into the century, often at a greater rate than economic growth. Latest assessment of conventional energy resources shows that their availability is not going to be an immediate threat to the security of supply but the question is can the region afford to allow current patterns of production and consumption of energy to continue in a rapidly deteriorating health of the environment? Changing these unsustainable patterns is the main challenge for the developed and developing countries alike. The paper dwells upon what are the major issues facing the region in promoting sustainable energy development and what are some of the policy options and possible strategies that the countries could consider to attain the objective of sustainable energy development. In this respect, the paper also dwells upon the need for strategic planning and management of energy resources

  15. Electrical Energy Management System

    OpenAIRE

    Oriti, Giovanna

    2014-01-01

    Energy Academic Group Science and Technology Project Research Objectives: To apply power electronics technology to manage electrical energy intelligently in buildings, ships or expeditionary camps. Energy Management System (EMS) laboratory demos and theses.

  16. Gas, the energy of the 21. century: challenges for the gas industry

    International Nuclear Information System (INIS)

    This year, the traditional address by the IGU President at the opening session of the Gas Conference in Nancy was of particular significance. Firstly, because we are now only a few months away from the World Gas Conference to be held in Nice in June 2000, under the presidency of Claude Detourne, secondly, because he clearly defined the challenges facing the gas industry at the dawn of the 21. century, in a rapidly changing world energy context. (authors)

  17. Emerging nuclear energy systems: Economic challenge: Revision 1

    International Nuclear Information System (INIS)

    Future nuclear energy systems may achieve substantially lower energy costs than those of existing fossil energy systems and comparable capital costs. Such low cost nuclear energy would provide a strong economic incentive to minimize the use of fossil fuels. If these low cost nuclear energy systems emerge in the next few decades, 21st century civilization may be able to avert potentially disastrous CO2 induced global climate changes. 12 refs., 1 fig

  18. Prospects of Nuclear Energy in Korea in the 21st Century

    International Nuclear Information System (INIS)

    This paper tries to project the prospects of the role of nuclear energy in Korea in the 21st century. The current status of energy situations and the future prospect of nuclear energy is reviewed, and the potential of its better production and more extensive utilization is investigated. The current government policy as well as the role of nuclear industries is reviewed and a systematic approach is suggested to materialize this anticipation. Through an evaluation of the current status of domestic and foreign technologies, the general outlook of advanced nuclear energy concepts is the future is presented by identifying underdeveloped areas and suggesting a scheme of technology development. However, the present study, by nature is limited to present a general vision of the role of nuclear energy in 2000's, which should be followed by a series of detailed studies in each respective field for implementation. As Korea opens new era of mature nuclear technology, the anticipation of effective, economic, and wide production and utilization of nuclear energy in the 21st century is expected

  19. Energy strategy of the 21st century taking advantage of fusion

    International Nuclear Information System (INIS)

    There is some general concern that economic development in developing countries will hasten global warning. In terms of reducing CO2 emissions, fusion will have great potential as a primary energy in the late 21st century according to the results of WING model simulations based on scenario analysis, if the cost of fusion with hydrogen generation would become competitive compared with those of other substitutive energies. However, securing social acceptance is very important to maintain the fossil research funded by the government suffering from cumulative debt. (author)

  20. Energy and environment in the 21st century : minimizing climate change.

    CERN Document Server

    CERN. Geneva

    2003-01-01

    Energy demand and economic output are coupled. Both are expected to vastly increase in this century, driven primarily by the economic and population growth of the developing world. If the present reliance on carbon-based fuels as primary energy sources continues, average global temperatures are projected to rise between 3° C and 6° C. Limiting climate change will require reduction in greenhouse gas emissions far beyond the Kyoto commitments. Time scales and options, including nuclear, will be reviewed.

  1. Wireless embedded system with applications to renewable energy and energy efficiency

    OpenAIRE

    Rashidi, Younes

    2012-01-01

    Renewable sources of energy are considered as viable alternatives to cope with environmental issues related to non-renewable energies and the energy crisis of the current century. However, there are certain challenges in the production and consumption of renewable sources of energy. In this thesis, we study the problem of monitoring power production in photovoltaic (PV) solar energy systems and energy-efficient lighting control through wireless embedded microcontroller systems. In particular,...

  2. Will fusion be ready to meet the energy challenge for the 21st century?

    Science.gov (United States)

    Bréchet, Yves; Massard, Thierry

    2016-05-01

    Finite amount of fossil fuel, global warming, increasing demand of energies in emerging countries tend to promote new sources of energies to meet the needs of the coming centuries. Despite their attractiveness, renewable energies will not be sufficient both because of intermittency but also because of the pressure they would put on conventional materials. Thus nuclear energy with both fission and fusion reactors remain the main potential source of clean energy for the coming centuries. France has made a strong commitment to fusion reactor through ITER program. But following and sharing Euratom vision on fusion, France supports the academic program on Inertial Fusion Confinement with direct drive and especially the shock ignition scheme which is heavily studied among the French academic community. LMJ a defense facility for nuclear deterrence is also open to academic community along with a unique PW class laser PETAL. Research on fusion at LMJ-PETAL is one of the designated topics for experiments on the facility. Pairing with other smaller European facilities such as Orion, PALS or LULI2000, LMJ-PETAL will bring new and exciting results and contribution in fusion science in the coming years.

  3. Recognizing 21. century citizenship: 1997 federal energy and water management award winners

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-12-31

    Energy is a luxury that no one can afford to waste, and many Federal government agencies are becoming increasingly aware of the importance of using energy wisely. Thoughtful use of energy resources is important, not only to meet agency goals, but because energy efficiency helps improve air quality. Sound facility management offers huge savings that affect the agency`s bottom line, the environment, and workplace quality. Hard work, innovation, and vision are characteristic of those who pursue energy efficiency. That is why the Department of Energy, Federal Energy Management Program (FEMP) is proud to salute the winners of the 1997 Federal Energy and Water Management Award. The 1997 winners represent the kind of 21st century thinking that will help achieve widespread Federal energy efficiency. In one year, the winners, through a combination of public and private partnerships, saved more than $100 million and 9.8 trillion Btu by actively identifying and implementing energy efficiency, water conservation, and renewable energy projects. The contributions of these individuals, small groups, and organizations are presented in this report.

  4. Solar energy conversion systems

    CERN Document Server

    Brownson, Jeffrey R S

    2013-01-01

    Solar energy conversion requires a different mind-set from traditional energy engineering in order to assess distribution, scales of use, systems design, predictive economic models for fluctuating solar resources, and planning to address transient cycles and social adoption. Solar Energy Conversion Systems examines solar energy conversion as an integrative design process, applying systems thinking methods to a solid knowledge base for creators of solar energy systems. This approach permits different levels of access for the emerging broad audience of scientists, engineers, architects, planners

  5. Seminar in Critical Inquiry Twenty-first Century Nuclear Systems

    Energy Technology Data Exchange (ETDEWEB)

    LeMone, D. V.

    2002-02-25

    Critical Inquiry, has not only been successful in increasing university student retention rate but also in improving student academic performance beyond the initial year of transition into the University. The seminar course herein reviewed is a balanced combination of student personal and academic skill development combined with a solid background in modern nuclear systems. It is a valid premise to assume that entering students as well as stakeholders of the general public demonstrate equal levels of capability. Nuclear systems is designed to give a broad and basic knowledge of nuclear power, medical, industrial, research, and military systems (nuclear systems) in 20-25 hours.

  6. Was the nineteenth century giant eruption of Eta Carinae a merger event in a triple system?

    CERN Document Server

    Zwart, Simon Portegies

    2015-01-01

    We discuss the events that led to the giant eruption of Eta Carinae, and find that the mid-nineteenth century (in 1838-1843) giant mass-loss outburst has the characteristics of being produced by the merger event of a massive close binary, triggered by the gravitational interaction with a massive third companion star, which is the current binary companion in the Eta Carinae system. We come to this conclusion by a combination of theoretical arguments supported by computer simulations using the Astrophysical Multipurpose Software Environment. According to this model the $\\sim 90$\\,\\MSun\\, present primary star of the highly eccentric Eta Carinae binary system is the product of this merger, and its $\\sim 30$\\,\\MSun\\, companion originally was the third star in the system. In our model the Homunculus nebula was produced by an extremely enhanced stellar wind, energized by tidal energy dissipation prior to the merger, which enormously boosted the radiation-driven wind mass-loss. The current orbital plane is then align...

  7. Complex Systems: Science for the 21st Century

    Energy Technology Data Exchange (ETDEWEB)

    Shank, Charles V. [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Awschalom, David [Univ. of California, Santa Barbara, CA (United States); Bawendi, Moungi [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Frechet, Jean [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Murphy, Donald [Lucent Technologies (United States); Stupp, Sam [Northwestern Univ., Evanston, IL (United States); Wolynes, Peter [Univ. of Illinois, Urbana, IL (United States)

    1999-03-06

    The workshop was designed to help define new scientific directions related to complex systems in order to create new understanding about the nano world and complicated, multicomponent structures. Five emerging themes regarding complexity were covered: Collective Phenomena; Materials by Design; Functional Systems; Nature's Mastery; and New Tools.

  8. New energy strategies for the 21st century: A Russian perspective

    Energy Technology Data Exchange (ETDEWEB)

    Margulov, G.D. [International Fuel and Energy Association, Moscow (Russian Federation)

    1999-12-01

    The new energy strategy developed by Russian scientists and specialists working in the International Fuel and Energy Association is a doctrine for the further liberalization of the energy sector; pooling of new know-how and efforts of the world community for economic progress; rejecting established stereotypes of lifestyles based on inefficient energy use thereby improving the quality of life; increasing the role and responsibilities of the individual in the process of arresting environment degradation; ensuring gradual decreases in energy consumption at existing costs; and reducing social divides. The article outlines the two stages of the strategy for the development of the energy sector, the first until the year 2030, the second extending to the middle of the 21st century. The first stage will give priority to natural gas usage and intensification of energy conservation measures, the second will tackle the problems of balancing the shares of petroleum, coal and natural gas, develop new and renewable energy and strengthen the resource-technological base of the coal industry and of nuclear energy. The importance of interaction with the government, the international community, social organisations and with the energy sector companies and commercial banks is discussed. 1 ref.

  9. The twenty first century informatization and artificial intelligence system

    International Nuclear Information System (INIS)

    The contents of this book are competition of mental weakness and visually handicapped people, barbarian about the knowledge of commodity, we are living in notion of time of the agricultural age, parade of informatization of fool. Is there a successful case of informatization when it is done as others do?, what is technology of informatization?, there is mistake in traditional information technology from a system of thought, information system, and analysis of improvement of industrial structure case of development for program case of system installation, and a thief free society.

  10. Energy Systems Comparison and Clean High Tech Evolution

    OpenAIRE

    Grob, Gustav

    2010-01-01

    Humanity can be confident to survive on planet Earth in good livelihood, because 1 - there is enough clean, sustainable energy available for centuries to come 2 - these clean, sustainable energy systems are competitive with finite polluting systems 3 - decentralized, clean sustainable energy conversion will be growing world-wide 4 - environmental impacts can be avoided with clean, sustainable energy systems 5 - mineral resources can be conserved for future generations and must not be burnt an...

  11. Moving health systems into the new century. Proceedings

    Energy Technology Data Exchange (ETDEWEB)

    Rovira, J.; Eimeren, W. van; Duru, G.

    1997-12-31

    The issue contains 92 international contributions to health care systems concerning country specific subjects as well as specific diseases, and economic aspects, forecasting, data development, and comparative evaluations. (AJ)

  12. The IAEA's safeguards system. Ready for the 21st century

    International Nuclear Information System (INIS)

    The publication reviews the IAEA's safeguards system, answering the following questions: What is being done to halt the further spread of nuclear weapons? Why are IAEA Safeguards important? What assurances do safeguards seek to provide? How are safeguards agreements implemented? What specific challenges have there been for IAEA verification? Can the IAEA prevent the diversion of declared Material? How has the safeguards system been strengthened? How much do safeguards cost? What is the future of IAEA verification?

  13. The IAEA's safeguards systems. Ready for the 21st century

    International Nuclear Information System (INIS)

    The publication reviews the IAEA's safeguards system, answering the following questions: What is being done to halt the further spread of nuclear weapons? Why are IAEA Safeguards important? what assurances do safeguards seek to provide? How are safeguards agreements implemented? What specific challenges have there been for IAEA verification? Can the IAEA prevent the diversion of declared Material? How has the safeguards system been strengthened? How much do safeguards cost? What is the future of IAEA verification? (author)

  14. Generation-IV Nuclear Energy Systems

    Science.gov (United States)

    McFarlane, Harold

    2008-05-01

    Nuclear power technology has evolved through roughly three generations of system designs: a first generation of prototypes and first-of-a-kind units implemented during the period 1950 to 1970; a second generation of industrial power plants built from 1970 to the turn of the century, most of which are still in operation today; and a third generation of evolutionary advanced reactors which began being built by the turn of the 20^th century, usually called Generation III or III+, which incorporate technical lessons learned through more than 12,000 reactor-years of operation. The Generation IV International Forum (GIF) is a cooperative international endeavor to develop advanced nuclear energy systems in response to the social, environmental and economic requirements of the 21^st century. Six Generation IV systems under development by GIF promise to enhance the future contribution and benefits of nuclear energy. All Generation IV systems aim at performance improvement, new applications of nuclear energy, and/or more sustainable approaches to the management of nuclear materials. High-temperature systems offer the possibility of efficient process heat applications and eventually hydrogen production. Enhanced sustainability is achieved primarily through adoption of a closed fuel cycle with reprocessing and recycling of plutonium, uranium and minor actinides using fast reactors. This approach provides significant reduction in waste generation and uranium resource requirements.

  15. Flexible energy systems

    DEFF Research Database (Denmark)

    Lund, Henrik

    2003-01-01

    The paper discusses and analyses diffent national strategies and points out key changes in the energy system in order to achieve a system which can benefit from a high percentage of wind and CHP without having surplus production problems, introduced here as a flexible energy system....

  16. Hitachi product data management system toward the 21st century by CALS approach

    International Nuclear Information System (INIS)

    HIPDM21 (Hitachi Product Data Management System for the 21st century) is a comprehensive computer information management system which has been developed for the purpose of plant life cycle business support in terms of the electronics information exchange and sharing between the disciplines using the product data management technology. The system consists of core systems (Engineering Data Control System, Integrated Commodity Database system, and Document Management System) and business application systems. In the present development phase, the system is being enhanced to support CALS standards including EDT, SGML, and STEP, and to support information exchange and sharing with outside the company including clients, construction companies, and domestic/international vendors. (author)

  17. Flywheel Energy Storage Systems

    OpenAIRE

    Daoud, Mohammed; Abdel-Khalik, Ayman; Elserogi, Ahmed; Ahmed, Shehab; Massoud, Ahmed

    2015-01-01

    Flywheels are one of the oldest and most popular energy storage media owing to the simplicity of storing kinetic energy in a rotating mass. Flywheel energy storage systems (FESSs) can be used in different applications, for example, electric utilities and transportation. With the development of new technologies in the field of composite materials and magnetic bearings, higher energy densities are allowed in the design of flywheels. The amount of stored energy in FESS depends on the mass and th...

  18. Energy Recovery System

    Science.gov (United States)

    1983-01-01

    Cogeneration system is one in which the energy ordinarily wasted in an industrial process is recovered and reused to create a second form of energy. Such an energy recovery system is in use at Crane Company's plant in Ferguson, KY, which manufactures ceramic bathroom fixtures. Crane's system captures hot stack gases from the company's four ceramic kilns and uses them to produce electrical power for plant operations.

  19. Trends and Challenges of Educational System in the XXI Century

    OpenAIRE

    Madina Serikbekovna Ashilova; Kalimash Kapsamarovna Begalinova

    2014-01-01

    This article specifies the main challenges and trends of the modern educational system. It addresses the most pressing educational issues, such as consumerization of modern education, exteriorization of education (transformation of knowledge into information), increase of earthliness and immorality under the conditions of development of consumer society, entertainment and generality, mass character of culture. The author sees the main cause of the crisis in the dominance of Western exploitati...

  20. Development of a 21st Century Small Aircraft Transportation System

    Science.gov (United States)

    Bowen, Brent D.; Holmes, Bruce J.; Hansen, Frederick

    2000-01-01

    The National Aeronautics and Space Administration (NASA), U.S. Department of Transportation, Federal Aviation Administration, industry stakeholders, and academia, have joined forces to pursue the NASA National General Aviation Roadmap leading to a Small Aircraft Transportation System (SATS). This strategic undertaking has a 25-year goal to bring the next-generation technologies and improve travel between remote communities and transportation centers in urban areas by utilizing the nation's 5,400 public use general aviation airports. To facilitate this initiative, a comprehensive upgrade of public infrastructure must be planned, coordinated, and implemented within the framework of the national air transportation system. The Nebraska NASA EPSCoR Program has proposed to deliver research support in key public infrastructure areas in coordination with the General Aviation Program Office at the NASA Langley Research Center. Ultimately, SATS may permit tripling aviation system throughput capacity by tapping the underutilized general aviation facilities to achieve the national goal of doorstep-to-destination travel at four times the speed of highways for the nation's suburban, rural, and remote communities.

  1. Vision of energy supply in the 21st century: managing the global bonfire

    International Nuclear Information System (INIS)

    Humans have lit a vast carbon-based bonfire that has fueled the world's economic and industrial development for the last 200 years. In that time, the impact of emissions into the atmosphere has become measurable, and has triggered debates on global warming and climate change as a result of rising levels of greenhouse gases. Growth in world population and energy use suggests we will need to use all the energy sources available to us in the 21st Century, to successfully manage and preserve the environment. Consistent with the need for continued human and economic growth and reduced emissions, we must use non-carbon sources for a significant fraction of future energy use without onerous or expensive restrictions on carbon fuels. Nuclear, renewable and hydrogen energy sources together are uniquely synergistic, reducing costs, extending energy resources, providing additional electricity generation capacity, and reducing transportation emissions. These benefits provide an economic advantage and export potential, increase the lifetime of oil and gas resources, and encourage technical innovation in transportation. To illustrate these impacts we adopt a model for observed atmospheric GHG concentrations based on the correlation of historic and projected carbon energy use patterns. We estimate the direct impact of various alternate non-carbon based energy sources on atmospheric CO2 concentration for the 21st Century. To stabilize CO2 concentrations at about today's levels requires introducing about 30-40% of all the noncarbon energy sources, plus about 10% sequestration. This means weaning the world from about 90% reliance on carbon sources to about 60% over the next century, and still keep the people of the world and their economic future moving and growing. The key role of nuclear energy and advanced nuclear plants becomes clear, whether or not the current worldwide value (∼7-10%) or a growing share of the energy market is assumed. We note that in the future, nuclear

  2. KEY ASPECTS OF SYSTEMIC LINGUISTICS IN GREAT BRITAIN AT THE END OF THE 20TH CENTURY

    OpenAIRE

    Gavrilova, Yulia

    2015-01-01

    The article deals with some peculiarities of the development of British linguistics at the end of the 20th century. We show its links with earlier developments in the science, providing a general comparison of British and American linguistic traditions. Since the key theory of linguistics in Great Britain in the 20th century was the London School, all the subsequent concepts were, to an extent, based on it. Systemic-functional linguistics looks at the use of language in the context of speech,...

  3. Was the nineteenth century giant eruption of Eta Carinae a merger event in a triple system?

    Science.gov (United States)

    Portegies Zwart, S. F.; van den Heuvel, E. P. J.

    2016-03-01

    We discuss the events that led to the giant eruption of Eta Carinae, and find that the mid-nineteenth century (in 1838-1843) giant mass-loss outburst has the characteristics of being produced by the merger event of a massive close binary, triggered by the gravitational interaction with a massive third companion star, which is the current binary companion in the Eta Carinae system. We come to this conclusion by a combination of theoretical arguments supported by computer simulations using the Astrophysical Multipurpose Software Environment. According to this model the ˜90 M⊙ present primary star of the highly eccentric Eta Carinae binary system is the product of this merger, and its ˜30 M⊙ companion originally was the third star in the system. In our model, the Homunculus nebula was produced by an extremely enhanced stellar wind, energized by tidal energy dissipation prior to the merger, which enormously boosted the radiation-driven wind mass-loss. The current orbital plane is then aligned with the equatorial plane of the Homunculus, and the symmetric lobes are roughly aligned with the argument of periastron of the current Eta Carina binary. The merger itself then occurred in 1838, which resulted in a massive asymmetric outflow in the equatorial plane of the Homunculus. The 1843 outburst can in our model be attributed to the subsequent encounter when the companion star (once the outermost star in the triple system) plunges through the bloated envelope of the merger product, once when it passed periastron again. We predict that the system has an excess space velocity of order 50 km s-1 in the equatorial plane of the Homunculus. Our triple model gives a viable explanation for the high runaway velocities typically observed in LBVs.

  4. Power Systems of the Future: A 21st Century Power Partnership Thought Leadership Report (Fact Sheet)

    Energy Technology Data Exchange (ETDEWEB)

    2015-01-01

    Powerful trends in technology, policy environments, financing, and business models are driving change in power sectors globally. In light of these trends, the question is no longer whether power systems will be transformed, but rather how these transformations will occur. Power Systems of the Future, a thought leadership report from the 21st Century Power Partnership, explores these pathways explores actions that policymakers and regulators can take to encourage desired power system outcomes.

  5. The 21st century Museum Climatic Monitoring System

    Science.gov (United States)

    Liu, W.-S.

    2015-08-01

    Technology has provided us work convenience and shaped our quality of life; it has enabled an unprecedented level of access to knowledge by flipping screen of a hand-held electronic device without going elsewhere but stay connected wireless communication. This kind of technology has been broadly acquired at museums in Hong Kong for preserving their valuable collections. Similar gadget was applied on the monitoring system to record climatic conditions of museum's stores and galleries. Sensors have been equipped with chips for the wireless transmission of RH/Temp, without installation of any conduit or LAN lines. Useful and important data will then be grouped into a packet format for efficient delivery. As long as the static IP address of the target workstation has been set, data can be accurately retrieved from one place to another via commercially available browsers, such as: Firefox or Internet Explorer, even on hand-held electronic devices. This paper will discuss the detail of this system, its pros and cons in comparison with the old model. After all, the new technology is highly significant in supporting the current needs and the future developments of the museum service.

  6. Spacecraft Energy Storage Systems

    OpenAIRE

    Robinson, Wilf; Hanks, James; Spina, Len; Havenhill, Doug; Gisler, Gary; Ginter, Steve; Brault, Sharon

    1997-01-01

    Flywheel Energy Storage Systems represent an exciting alternative to traditional battery storage systems used to power satellites during periods of eclipse. The increasing demand for reliable communication and data access is driving explosive growth in the number of satellite systems being developed as well as their performance requirements. Power on orbit is the key to this performance, and batteries are becoming increasingly unattractive as an energy storage media. Flywheel systems offer ve...

  7. WAVE ENERGY CONVERSION SYSTEMS

    OpenAIRE

    Güney, Mükrimin Şevket

    2015-01-01

    It is a consensus to widespread use of renewable sources for disposal of environmental impact caused by fossil fuel consumption, and moreover to remedy of fossil fuels depletion. Wave power is a renewable kind of energy. Worldwide potential for wave power is enormous. Ocean appears to be an important source of wave energy. Various systems are developed and some new projects are implemented on this subject. Therefore, in this study has been presented the wave energy conversion systems in detai...

  8. Energy in the 21st Century: From Resource to Environmental and Lifestyle Constraints

    OpenAIRE

    Grubler, A

    1991-01-01

    After more than 15 years of energy global studies it appears that resource limits and volatile prices are no longer the most important determinants of future energy systems. Instead, improved social and environmental compatibility of energy systems is now in the forefront.

  9. Solar Energy Systems for Ohioan Residential Homeowners

    Science.gov (United States)

    Luckett, Rickey D.

    Dwindling nonrenewable energy resources and rising energy costs have forced the United States to develop alternative renewable energy sources. The United States' solar energy industry has seen an upsurge in recent years, and photovoltaic holds considerable promise as a renewable energy technology. The purpose of this case study was to explore homeowner's awareness of the benefits of solar energy. Disruptive-innovation theory was used to explore marketing strategies for conveying information to homeowners about access to new solar energy products and services. Twenty residential homeowners were interviewed face-to-face to explore (a) perceived benefits of solar energy in their county in Ohio, and (b) perceptions on the rationale behind the marketing strategy of solar energy systems sold for residential use. The study findings used inductive analyses and coding interpretation to explore the participants' responses that revealed 3 themes: the existence of environmental benefits for using solar energy systems, the expensive cost of equipment associated with government incentives, and the lack of marketing information that is available for consumer use. The implications for positive social change include the potential to enable corporate leaders, small business owners, and entrepreneurs to develop marketing strategies for renewable energy systems. These strategies may promote use of solar energy systems as a clean, renewable, and affordable alternative electricity energy source for the 21st century.

  10. Energy Information System

    OpenAIRE

    Bheemi Reddy Sandeep Reddy#1, Badugu Suresh

    2013-01-01

    This paper describes how strategies that can be used to reduce electric load using Energy Information System (EIS), which can monitor and analyze building energy consumption and related data through wireless systems have been increasing in use over the last decade.The objectives of this report1. Provide a review of the basic capabilities of various types of EIS products3. Provide a review of EIS technology from system architecture to application4. Review prospects for future use and capabilit...

  11. Observed and model simulated 20th century Arctic temperature variability: Canadian Earth System Model CanESM2

    OpenAIRE

    Chylek, P.; Li, J.; Dubey, M. K.; Wang, M.; Lesins, G.

    2011-01-01

    We present simulations of the 20th century Arctic temperature anomaly from the second generation Canadian Earth System Model (CanESM2). The new model couples together an atmosphere-ocean general circulation model, a land-vegetation model and terrestrial and oceanic interactive carbon cycle. It simulates well the observed 20th century Arctic temperature variability that includes the early and late 20th century warming periods and the intervening 1940–1970 period of substantial cooling. The add...

  12. Observed and model simulated 20th century Arctic temperature variability: Canadian Earth System Model CanESM2

    OpenAIRE

    Chylek, P.; Li, J.; Dubey, M. K.; Wang, M.; Lesins, G.

    2011-01-01

    We present simulations of the 20th century Arctic temperature anomaly from the second generation Canadian Earth System Model (CanESM2). The new model couples together an atmosphere-ocean general circulation model, a land-vegetation model and terrestrial and oceanic interactive carbon cycle. It simulates well the observed 20th century Arctic temperature variability that includes the early and late 20th century warming periods and the intervening 1940–1970 period of substantia...

  13. Nuclear energy for the 21st century to sustain our civilization

    International Nuclear Information System (INIS)

    enjoy wide spread support. We must therefore find a way to reduce energy consumption and decrease CO2 emission while maintaining our current quality of life. This means using energy efficiently and developing 'cleaner' energy sources that emit less carbon dioxide gas; the advanced nations are already moving in this direction. In this article, we will take a look at past energy structures of advanced countries from the perspectives of efficiency and cleanness in an attempt to draw some useful lessons in energy and the environment for the coming century. (author)

  14. Accelerating 21st Century Economic Growth by Implementation of the Lunar Solar Power System

    Science.gov (United States)

    Criswell, D. R.

    2002-01-01

    associated with better human health and longer life. This increases the economic value of human capital in developing nations (7). The power can be abundant and clean. This reduces the environmental cost of commercial power and greatly reduces the economic uncertainties associated with using the power. The net new power enables creation of a greater range of goods from common materials and the recycling of products without depletion of other terrestrial resources (8). Rectennas can enable dual use of land and reduce the total land area devoted to the production and delivery of commercial power. All these factors work together to accelerate net new economic growth on Earth. 1. World Energy Council (2000) Energy for Tomorrow's World - Acting Now!, 175pp., Atalink Projects Ltd, London. 2. Criswell, D. R. (2001) Characteristics of commercial power systems to support a prosperous global economy, IAF-01- R.1.03, 7PP., Toulouse, France. 3. Criswell, David R. (2001) Lunar Solar Power System: Industrial Research, Development, and Demonstration, Session 1.2.2: Hydroelectricity, Nuclear Energy and New Renewables, 18th World Energy Congress. [http://www.wec.co.uk] 4. Criswell, David R. (2002) Energy Prosperity within the 21st Century and Beyond: Options and the Unique Roles of the Sun and the Moon. Chapter 9: Innovative Solutions To CO2 Stabilization, R. Watts (editor), Cambridge Un. Press 5. National Research Council (2001) Laying the Foundation for Space Solar Power: An assessment of NASA's Space Solar Power Investment Strategy, 80pp., National Academy Press. 6. Strong, Marice (2001) Where on Earth are We Going?, (See p. 351-352), 419pp., Random House (forward by Kofi Annan) 7. Criswell, D. R. (2000) Human wealth and evolving requirements on large-scale commercial power systems, IAF-00- R.1.03, 6pp., (Rio de Janeiro). 8. Criswell, D. R. (1994) Net growth in the two-planet economy, IAA-94-IAA.8.1.704, 10pp.

  15. Energy Usage Analysis System

    Data.gov (United States)

    General Services Administration — The EUAS application is a web based system which serves Energy Center of Expertise, under the Office of Facilitates Management and Service Programs. EUAS is used...

  16. The role of nuclear energy in the global energy scenario of the 21st century

    International Nuclear Information System (INIS)

    The present political situation in the Near East reminds us of the fact that there are risks in the energy supply which are rated higher than those of the nuclear energy. Additionally it has to be considered that with the world-wide necessary expansion of the energy supply, by using fossil fuels, the greenhouse effect will be considerably increased. In order to reduce these risks, the nuclear energy can play an important role. Subject of the paper is the potential of the nuclear energy for non-electric applications. (orig.)

  17. Scientific Workflow Systems for 21st Century e-Science, New Bottle or New Wine?

    CERN Document Server

    Zhao, Yong; Foster, Ian

    2008-01-01

    With the advances in e-Sciences and the growing complexity of scientific analyses, more and more scientists and researchers are relying on workflow systems for process coordination, derivation automation, provenance tracking, and bookkeeping. While workflow systems have been in use for decades, it is unclear whether scientific workflows can or even should build on existing workflow technologies, or they require fundamentally new approaches. In this paper, we analyze the status and challenges of scientific workflows, investigate both existing technologies and emerging languages, platforms and systems, and identify the key challenges that must be addressed by workflow systems for e-science in the 21st century.

  18. Energy options from the 20th Century: Comparing Conventional and Nuclear Energy from a Sustainable Standpoint

    Directory of Open Access Journals (Sweden)

    Eric Ndeh Mboumien Ngang

    2012-12-01

    Full Text Available Different Energy options have been the driving force for the world economy with an evolution in types and sources. Decades ago choosing what energy option to use did not call for much debate as issues of sustainability, pressure on our environment, and our climate were not a major concern. However today, humans have to grapple with these current global challenges especially those exacerbated by our current sources of energy. The review article argues that science and sustainability thinking should be the basis for making the choice about what energy option is suitable for our era. It proposes that a more fruitful discourse should follow from a dialogue that puts in place the set of sustainability indicators and evaluating the suitability of the options for our era in that context. Focusing on two energy options; conventional and nuclear energy; the review compares them based on a set of sustainability indicators including, but not limited to, the environment, economics, ethics, expertise requirements, technical information, health, safety, uncertainty and government funding. In trying to answer the question Unsustainable conventional energy sources, is nuclear energy similar?, the review concludes that despite the demerits of nuclear energy, it is the solution to meet the world’s growing energy needs and to reverse the impending threat posed by climate change if research and development efforts in the sector are accelerated.

  19. Solar Energy Systems

    Science.gov (United States)

    1984-01-01

    Calibrated in kilowatt hours per square meter, the solar counter produced by Dodge Products, Inc. provides a numerical count of the solar energy that has accumulated on a surface. Solar energy sensing, measuring and recording devices in corporate solar cell technology developed by Lewis Research Center. Customers for their various devices include architects, engineers and others engaged in construction and operation of solar energy facilities; manufacturers of solar systems or solar related products, such as glare reducing windows; and solar energy planners in federal and state government agencies.

  20. Living Systems Energy Module

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1995-09-26

    The Living Systems Energy Module, renamed Voyage from the Sun, is a twenty-lesson curriculum designed to introduce students to the major ways in which energy is important in living systems. Voyage from the Sun tells the story of energy, describing its solar origins, how it is incorporated into living terrestrial systems through photosynthesis, how it flows from plants to herbivorous animals, and from herbivores to carnivores. A significant part of the unit is devoted to examining how humans use energy, and how human impact on natural habitats affects ecosystems. As students proceed through the unit, they read chapters of Voyage from the Sun, a comic book that describes the flow of energy in story form (Appendix A). During the course of the unit, an ``Energy Pyramid`` is erected in the classroom. This three-dimensional structure serves as a classroom exhibit, reminding students daily of the importance of energy and of the fragile nature of our living planet. Interactive activities teach students about adaptations that allow plants and animals to acquire, to use and to conserve energy. A complete list of curricular materials and copies of all activity sheets appear in Appendix B.

  1. Three focal points for education systems in the 21st century

    DEFF Research Database (Denmark)

    Desjardins, Richard

    2012-01-01

    Strong and shared growth increasingly depend on the capacity of nations to develop, deploy and upgrade the skills of their citizens. Within this context, the following places an emphasis on three focal points for education systems in the 21st century. The first focus is on essential skills. The...... second focus is on the effectiveness of impact of education on economic and social outcomes. The third focus is on the dynamic elements of skill formation and skill use....

  2. The healthcare system in the Caucasus at the beginning of the XX century: the development features

    OpenAIRE

    Tatiana E. Gvarliani; Rashad A. Kurbanov; Teymur E. Zulfugarzade

    2016-01-01

    The article based on the archival material deals with the healthcare system in the Caucasus at the beginning of the XX century. In writing this article, the authors made use of reports from national archives of Georgia (Tbilisi, Georgia), the archival department of administration of Sochi (Sochi, Russian Federation). There is given the statistics from the works of Russian and foreign authors, and also reference literature. The authors‘ use of the principles of objectivity, historicism, ...

  3. The Smart Energy System

    DEFF Research Database (Denmark)

    Jurowetzki, Roman; Dyrelund, Anders; Hummelmose, Lars;

    the synergies which are obtained through integration of the district heating and district cooling, gas, and electricity grid into a single smart energy system. Besides documenting the technology and innovation strengths that Danish companies possess particularly relating to wind, district heating, CHP...... production, large scale solar heat, fuel cells, heat storage, waste incineration, among others, the report draws a picture of Denmark as a research and development hub for smart energy system solutions.......Copenhagen Cleantech Cluster has launched a new report, which provides an overview of Danish competencies relating to smart energy systems. The report, which is based on a questionnaire answered by almost 200 companies working with smart energy as well as a number of expert interviews, focuses on...

  4. Selected legal and regulatory concerns affecting domestic energy transportation systems

    International Nuclear Information System (INIS)

    This report provides assessments of eight legal and regulatory concerns that may affect energy material transportation in the US during the rest of the century: state authority to regulate nuclear materials transport, divestiture of petroleum pipelines from major integrated oil companies, problems affecting the natural gas transportation system, capabilities of energy transportation systems during emergencies, Federal coal pipeline legislation, ability of Federal agencies to anticipate railroad difficulties, abandonment of uneconomic railroad lines, and impact of the Panama Canal treaty upon US energy transportation

  5. The role of inertial fusion energy in the energy marketplace of the 21st century and beyond

    Science.gov (United States)

    John Perkins, L.

    The viability of inertial fusion in the 21st century and beyond will be determined by its ultimate cost, complexity, and development path relative to other competing, long term, primary energy sources. We examine this potential marketplace in terms of projections for population growth, energy demands, competing fuel sources and environmental constraints (CO 2), and show that the two competitors for inertial fusion energy (IFE) in the medium and long term are methane gas hydrates and advanced, breeder fission; both have potential fuel reserves that will last for thousands of years. Relative to other classes of fusion concepts, we argue that the single largest advantage of the inertial route is the perception by future customers that the IFE fusion power core could achieve credible capacity factors, a result of its relative simplicity, the decoupling of the driver and reactor chamber, and the potential to employ thick liquid walls. In particular, we show that the size, cost and complexity of the IFE reactor chamber is little different to a fission reactor vessel of the same thermal power. Therefore, relative to fission, because of IFE's tangible advantages in safety, environment, waste disposal, fuel supply and proliferation, our research in advanced targets and innovative drivers can lead to a certain, reduced-size driver at which future utility executives will be indifferent to the choice of an advanced fission plant or an advanced IFE power plant; from this point on, we have a competitive commercial product. Finally, given that the major potential customer for energy in the next century is the present developing world, we put the case for future IFE "reservations" which could be viable propositions providing sufficient reliability and redundancy can be realized for each modular reactor unit.

  6. Nineteenth-Century World's Fairs as Accountability Systems: Scopic Systems, Audit Practices and Educational Data

    Science.gov (United States)

    Sobe, Noah W.; Boven, David T.

    2014-01-01

    Late-19th century World's Fairs constitute an important chapter in the history of educational accountability. International expositions allowed for educational systems and practices to be "audited" by lay and expert audiences. In this article we examine how World's Fair exhibitors sought to make visible educational practices…

  7. Electrical energy systems

    CERN Document Server

    El-Hawary, Mohamed E

    2007-01-01

    Features discussions ranging from the technical aspects of generation, transmission, distribution, and utilization to power system components, theory, protection, and the energy control center that offer an introduction to effects of deregulating electric power systems, blackouts and their causes, and minimizing their effects.

  8. Government and energy - 19-20. century - 2002-2006 seminar

    International Nuclear Information System (INIS)

    Energy is the industrial domain where the French government has always been at the same time and since the very beginning, the lawmaker, the operator, the regulator and the financing body. Real motive sector of the different industrializing phases, energy (coal, gas, electricity, petroleum) has always been strategic as well as the favoured field for the emergence of the public utility notion. The specificities of the 'French energy model' and the role played by the government have been the object of a three year analysis by historians, economists and energy actors and presented at a seminar made of successive round tables regularly organized in Paris from fall 2003 to spring 2006. These proceedings gather about 30 presentations and testimonies dealing with the role of the French government in the energy domain and with the complex relations between the government and the energy operators. Content: 1 - the government and its intervention means: French gas companies and the government: decision logics of the public supervision; historical prospect of government and electricity in France; role of the government in the development of coal resources in France from the end of the 18. century to the end of the 19. century; the French coal industry from 1914 to 1946: a limited modernization; bad luck for the French coal (1944-1960); economic analysis of the French coal industry life cycle: the ultimate phase (1970-2004); force and inertia of the French nuclear policy - a joint evolution of technology and institutions; the Mine corps and the industry from the 1950's to the 1980's; the public opinion sensibility with respect to energy saving (1974-1986); 2 - looking for energy policies - a network of French actors: the vision of administrative procedures in energy public companies (1945-1975); government's intervention in financing the energy sector; fate of municipal gas and electric utilities in France; the creation of the petroleum general union; the main trends of the

  9. Hydrogen energy systems studies

    Energy Technology Data Exchange (ETDEWEB)

    Ogden, J.M.; Steinbugler, M.; Kreutz, T. [Princeton Univ., NJ (United States). Center for Energy and Environmental Studies

    1998-08-01

    In this progress report (covering the period May 1997--May 1998), the authors summarize results from ongoing technical and economic assessments of hydrogen energy systems. Generally, the goal of their research is to illuminate possible pathways leading from present hydrogen markets and technologies toward wide scale use of hydrogen as an energy carrier, highlighting important technologies for RD and D. Over the past year they worked on three projects. From May 1997--November 1997, the authors completed an assessment of hydrogen as a fuel for fuel cell vehicles, as compared to methanol and gasoline. Two other studies were begun in November 1997 and are scheduled for completion in September 1998. The authors are carrying out an assessment of potential supplies and demands for hydrogen energy in the New York City/New Jersey area. The goal of this study is to provide useful data and suggest possible implementation strategies for the New York City/ New Jersey area, as the Hydrogen Program plans demonstrations of hydrogen vehicles and refueling infrastructure. The authors are assessing the implications of CO{sub 2} sequestration for hydrogen energy systems. The goals of this work are (a) to understand the implications of CO{sub 2} sequestration for hydrogen energy system design; (b) to understand the conditions under which CO{sub 2} sequestration might become economically viable; and (c) to understand design issues for future low-CO{sub 2} emitting hydrogen energy systems based on fossil fuels.

  10. MERCURY SPECIATION SAMPLING AT NEW CENTURY ENERGY'S VALMONT STATION

    Energy Technology Data Exchange (ETDEWEB)

    Dennis L. Laudal

    2000-04-01

    The 1990 Clean Air Act Amendments required the U.S. Environmental Protection Agency (EPA) to determine whether the presence of mercury in the stack emissions from fossil fuel-fired electric utility power plants poses an unacceptable public health risk. EPA's conclusions and recommendations were presented in the ''Mercury Study Report to Congress'' and ''Study of Hazardous Air Pollutant Emissions from Electric Utility Steam Generating Units''. The first report addressed both the human health and environmental effects of anthropogenic mercury emissions, while the second addressed the risk to public health posed by the emission of mercury and other hazardous air pollutants from steam electric generating units. Although these reports did not state that mercury controls on coal-fired electric power stations would be required given the current state of the art, they did indicate that the EPA views mercury as a potential threat to human health. Therefore, it was concluded that mercury controls at some point may be necessary. EPA also indicated that additional research/information was necessary before any definitive statement could be made. In an effort to determine the amount and types of mercury being emitted into the atmosphere by coal-fired power plants, EPA in late 1998 issued an information collection request (ICR) that required all coal-fired power plants to analyze their coal and submit the results to EPA on a quarterly basis. In addition, about 85 power stations were required to measure the speciated mercury concentration in the flue gas. These plants were selected on the basis of plant configuration and coal type. The Valmont Station owned and operated by New Century Energy in Boulder, Colorado, was selected for detailed mercury speciation of the flue gas as part of the ICR process. New Century Energy, in a tailored collaboration with EPRI and the U.S. Department of Energy, contracted with the Energy & Environmental

  11. Energy needs for the 21st century and the Hungarian energy strategy

    International Nuclear Information System (INIS)

    His Excellency J. Koka, Minister of Economy and Transport, Hungary, suggested that as a result of the need for energy, notably electric energy, by a growing world population, it is rational to work for a low carbon intensive energy future as the basis of sustainable development. His conclusion was that at the present time and in the next decades nuclear power is the only viable source of vast amounts of additional energy that is sustainable. He suggested that beyond the environmental and economic benefits, nuclear power may provide an attractive option in the search for greater energy security, which is the one of the main pillars of energy strategy. The Hungarian energy supply is about 70% energy import dependent, therefore the security of energy supply is a priority of the national energy strategy. The safe, successful and profitable operation of the State owned Paks nuclear power plant greatly contributes to meeting this challenge. This situation could change significantly after 2012 if the units of Paks were shut down at the expiry of their operational licences. Based on the present tendencies and market conditions, the prediction is that either the growth of demand must be covered by gas fired power plants that produce energy more expensively compared with nuclear power plants, or electricity will have to be imported. He indicated that the Hungarian Government's position is that the only feasible solution to this problem is the long term operation of Paks nuclear power plant, and to that end the Hungarian Government is ready to provide the necessary support. Detailed assessment of the plant status demonstrates that the condition of the plant is excellent, and the continuation of safe operation for another 20 years at the expiry of the present operational licence is feasible. He noted that public acceptance of nuclear power generation in Hungary has been continuously over 70% for many years. Mr. Koka also stated that Hungary is particularly thankful for the

  12. Nuclear Energy in the 21st Century: Addressing Energy Needs and Environmental Challenges. Proceedings of an International Ministerial Conference

    International Nuclear Information System (INIS)

    The International Ministerial Conference on Nuclear Energy in the 21st Century was organized by the IAEA and co-sponsored by the OECD Nuclear Energy Agency and the China Nuclear Energy Association. The conference was hosted by the Government of China through the China Atomic Energy Authority and held in Beijing. A total of 16 ministers participated in the conference, and a further 13 ministers provided statements to be presented on their behalf. The aim of this conference was to provide an opportunity to review the status and prospects of nuclear power, including progress in the evolution of technology, and to discuss the actions necessary to carry forward the positive momentum that nuclear power has experienced in recent years. The conference also offered a forum for many countries considering the potential benefits of introducing nuclear power into their national energy mix to further assess the viability of the nuclear power option. These proceedings contain the conference summary and the presentations made during the opening ceremony, as well as the concluding statement by the President of the conference. This material, as well as all the ministerial and technical presentations from the conference, is included on the attached DVD

  13. Ocean energy systems

    Science.gov (United States)

    1984-04-01

    The Johns Hopkins University Applied Physics Laboratory is engaged in developing ocean thermal energy conversion (OTEC) systems that are to provide synthetic fuels or an energy intensive product such as ammonia or aluminum. The work also includes assessment and design concepts for hybrid plants, such as geothermal-OTEC plants. The laboratory also has a technical advisory role with respect to DOE/DOET's management of the preliminary design activity of an industry team headed by Ocean Thermal Corporation that is designing an OTEC pilot plant that could be built in shallow water off the shore of Oahu, Hawaii. In addition, the Laboratory is now taking part in a program to evaluate and test the pneumatic wave energy conversion system, an ocean energy device consisting of a turbine that is air driven as a result of wave action in a chamber.

  14. Energy systems in surgery

    OpenAIRE

    Pantelić Miloš; Ljikar Jelena; Devečerski Gordana; Karadžić Jelena

    2015-01-01

    Introduction. The systems of energy in surgery are applied in order to achieve better and more effective performing of procedures. Whereas various energy sources, including electricity, ultrasound, laser and argon gas, may be used, the fundamental principle involves tissue necrosis and hemostasis by heating. Electro Surgery. Electro Surgery is a surgical technique by which surgical procedures are performed by focused heating of the tissue using devices base...

  15. Fusion energy from the Moon for the twenty-first century

    Science.gov (United States)

    Kulcinski, G. L.; Cameron, E. N.; Santarius, J. F.; Sviatoslavsky, I. N.; Wittenberg, L. J.; Schmitt, Harrison H.

    1992-01-01

    It is shown in this paper that the D-He-3 fusion fuel cycle is not only credible from a physics standpoint, but that its breakeven and ignition characteristics could be developed on roughly the same time schedule as the DT cycle. It was also shown that the extremely low fraction of power in neutrons, the lack of significant radioactivity in the reactants, and the potential for very high conversion efficiencies, can result in definite advantages for the D-He-3 cycle with respect to DT fusion and fission reactors in the twenty-first century. More specifically, the D-He-3 cycle can accomplish the following: (1) eliminate the need for deep geologic waste burial facilities and the wastes can qualify for Class A, near-surface land burial; (2) allow 'inherently safe' reactors to be built that, under the worst conceivable accident, cannot cause a civilian fatality or result in a significant (greater than 100 mrem) exposure to a member of the public; (3) reduce the radiation damage levels to a point where no scheduled replacement of reactor structural components is required, i.e., full reactor lifetimes (approximately 30 FPY) can be credibly claimed; (4) increase the reliability and availability of fusion reactors compared to DT systems because of the greatly reduced radioactivity, the low neutron damage, and the elimination of T breeding; and (5) greatly reduce the capital costs of fusion power plants (compared to DT systems) by as much as 50 percent and present the potential for a significant reduction on the COE. The concepts presented in this paper tie together two of the most ambitious high-technology endeavors of the twentieth century: the development of controlled thermonuclear fusion for civilian power applications and the utilization of outer space for the benefit of mankind on Earth.

  16. Fusion energy from the Moon for the twenty-first century

    International Nuclear Information System (INIS)

    It is shown in this paper that the D-He-3 fusion fuel cycle is not only credible from a physics standpoint, but that its breakeven and ignition characteristics could be developed on roughly the same time schedule as the DT cycle. It was also shown that the extremely low fraction of power in neutrons, the lack of significant radioactivity in the reactants, and the potential for very high conversion efficiencies, can result in definite advantages for the D-He-3 cycle with respect to DT fusion and fission reactors in the twenty-first century. More specifically, the D-He-3 cycle can accomplish the following: (1) eliminate the need for deep geologic waste burial facilities and the wastes can qualify for Class A, near-surface land burial; (2) allow inherently safe reactors to be built that, under the worst conceivable accident, cannot cause a civilian fatality or result in a significant (greater than 100 mrem) exposure to a member of the public; (3) reduce the radiation damage levels to a point where no scheduled replacement of reactor structural components is required, i.e., full reactor lifetimes (approximately 30 FPY) can be credibly claimed; (4) increase the reliability and availability of fusion reactors compared to DT systems because of the greatly reduced radioactivity, the low neutron damage, and the elimination of T breeding; and (5) greatly reduce the capital costs of fusion power plants (compared to DT systems) by as much as 50 percent and present the potential for a significant reduction on the COE. The concepts presented in this paper tie together two of the most ambitious high-technology endeavors of the twentieth century: the development of controlled thermonuclear fusion for civilian power applications and the utilization of outer space for the benefit of mankind on Earth

  17. Fusion energy from the Moon for the twenty-first century

    Science.gov (United States)

    Kulcinski, G. L.; Cameron, E. N.; Santarius, J. F.; Sviatoslavsky, I. N.; Wittenberg, L. J.; Schmitt, Harrison H.

    1992-09-01

    It is shown in this paper that the D-He-3 fusion fuel cycle is not only credible from a physics standpoint, but that its breakeven and ignition characteristics could be developed on roughly the same time schedule as the DT cycle. It was also shown that the extremely low fraction of power in neutrons, the lack of significant radioactivity in the reactants, and the potential for very high conversion efficiencies, can result in definite advantages for the D-He-3 cycle with respect to DT fusion and fission reactors in the twenty-first century. More specifically, the D-He-3 cycle can accomplish the following: (1) eliminate the need for deep geologic waste burial facilities and the wastes can qualify for Class A, near-surface land burial; (2) allow 'inherently safe' reactors to be built that, under the worst conceivable accident, cannot cause a civilian fatality or result in a significant (greater than 100 mrem) exposure to a member of the public; (3) reduce the radiation damage levels to a point where no scheduled replacement of reactor structural components is required, i.e., full reactor lifetimes (approximately 30 FPY) can be credibly claimed; (4) increase the reliability and availability of fusion reactors compared to DT systems because of the greatly reduced radioactivity, the low neutron damage, and the elimination of T breeding; and (5) greatly reduce the capital costs of fusion power plants (compared to DT systems) by as much as 50 percent and present the potential for a significant reduction on the COE. The concepts presented in this paper tie together two of the most ambitious high-technology endeavors of the twentieth century: the development of controlled thermonuclear fusion for civilian power applications and the utilization of outer space for the benefit of mankind on Earth.

  18. Energy saving synergies in national energy systems

    DEFF Research Database (Denmark)

    Thellufsen, Jakob Zinck; Lund, Henrik

    2015-01-01

    In the transition towards a 100% renewable energy system, energy savings are essential. The possibility of energy savings through conservation or efficiency increases can be identified in, for instance, the heating and electricity sectors, in industry, and in transport. Several studies point...... to various optimal levels of savings in the different sectors of the energy system. However, these studies do not investigate the idea of energy savings being system dependent. This paper argues that such system dependency is critical to understand, as it does not make sense to analyse an energy saving...... without taking into account the actual benefit of the saving in relation to the energy system. The study therefore identifies a need to understand how saving methods may interact with each other and the system in which they are conducted. By using energy system analysis to do hourly simulation...

  19. Energy in the 21st Century: from resource to environmental and lifestyle constraints

    International Nuclear Information System (INIS)

    After more than 15 years of energy global studies it appears that resource limits and volatile prices are no longer the most important determinants of future energy systems. Instead, improved social and environmental compatibility of energy systems is now in the forefront. In view of increasing concerns about energy-related sources of global change, the paper discusses transitional strategies and policy measures towards sustainable energy development. They encompass a wide range of techno-economic adjustments such as efficiency improvements, shift to low and carbon-free fuels and enhancement of carbon sinks on one hand, and social-behavioral responses such as changes in private and leisure energy use on the other. 12 refs

  20. Korea Atomic Energy Research Institute (KAERI) in the 21st century

    International Nuclear Information System (INIS)

    Abstract. KAERI (Korea Atomic Energy Research Institute), a national nuclear research institute in the Republic of Korea, celebrated its fortieth anniversary last April. It has played a key role in the Korean nuclear history such that it: initiated and promoted the peaceful uses of nuclear energy in the Republic of Korea; maintained nuclear expertise on whole spectrum of nuclear field through conducting nuclear R and D programs, operating nuclear research facilities, and training and educating specialized nuclear personnel; founded a cornerstone of Korean nuclear industry by participating in the establishment of a nuclear engineering company and a nuclear fuel company and localizing nuclear fuel and reactor technology; and contributed to nuclear safety regulation by incubating a specialized nuclear regulatory body. Recently, to concentrate on nuclear R and D on advanced technology, KAERI went through management reform such as: the transfer of nuclear engineering divisions responsible for NSSS design and nuclear fuel design to nuclear industry in 1996; and the downsizing of manpower in 1998. Currently KAERI is in the challenging stage in terms of its missions and manpower. In the coming 21st century, KAERI is required to maintain the current R and D momentum and also to conduct priority-based research requiring concentrated effort. (author)

  1. The 21st Century as Whose Century?

    Directory of Open Access Journals (Sweden)

    David Scott

    2015-08-01

    Full Text Available Macro-analysis and East-West encounter are shown through consideration of objective yet subjective constructed concepts for the international system and international economy in the 21st century. Three paradigms are considered, namely the 21st century as the ‘Pacific Century’, as ‘China’s Century’ and as the ‘Asian Century’. Overlaps are shown between these three paradigms, as also developments in time, and gradually shift in geographical location. The ‘Pacific Century’, and its associated Rimspeak, was the paradigm emerging in the late 1970s, knitting together America’s West Coast and the Japanese economy. By the late 1980s this was already shifting to talk of the 21st century likely to be an ‘Asian Century’ model, mark-1, based on the Pacific Asia dynamism shown by the ‘Asian Tigers’ and Japan. However, the Asian financial crash of 1997-8, and the economic downturn in Japan, meant that such an ‘Asian Century’ seemed premature as the 21st century arrived. Instead, it was China’s economic growth that seemed most evident, and with it the concept of the 21st century as ‘China’s Century’. However, in turn that has already been modified during the first decade of the century by India’s arrival as a rapidly growing economy. Consequently the 21st century as ‘China’s Century’ and as ‘India’s Century’ has been combined into talk of an ‘Asian Century’, mark-2.

  2. Energy systems in surgery

    Directory of Open Access Journals (Sweden)

    Pantelić Miloš

    2015-01-01

    Full Text Available Introduction. The systems of energy in surgery are applied in order to achieve better and more effective performing of procedures. Whereas various energy sources, including electricity, ultrasound, laser and argon gas, may be used, the fundamental principle involves tissue necrosis and hemostasis by heating. Electro Surgery. Electro Surgery is a surgical technique by which surgical procedures are performed by focused heating of the tissue using devices based on high-frequency currents. It represents one of the most frequently used energy systems in laparoscopy. Ultrasound Energy. The basic principle of operation of the ultrasound surgical instruments is the usage of low-frequency mechanic vibrations (ultrasound energy within the range of 20-60 kHz for cutting and coagulation of tissue. Laser. Laser is the abbreviation for Light Amplification by Stimulated Emission of Radiation, aimed at increasing light by stimulated emission of radiation and it is the name of the instrument which generates coherent beam of light. Argon Plasma Coagulation. It has been in use since 1991 for endoscopic hemostasis. It uses highfrequency electric current and ionized gas argon. The successful application of devices depends on the type of surgical procedure, training of the surgeon and his knowledge about the device. Surgeons do not agree on the choice of device which would be optimal for a certain procedure. Conclusion. The whole team in the operating room must have the basic knowledge of the way an energy system works so as to provide a safe and effective treatment of patients. The advantages and shortcomings of different systems of energy have to be taken into account while we use a special mode.

  3. Alternative energy technologies: integrated energy systems

    International Nuclear Information System (INIS)

    This paper describes the smart energy technology which refers to fully integrated energy systems from generation through distribution and consumption. The main thrust of this approach is to make energy systems more reliable, intelligent and more eco-friendly. Population growth will increase the demand for energy. Climate change is driving the need for carbon dioxide reduction and increase demand for renewable energy sources. Canada's electricity infrastructure deficit is significant and there is a need to replace outdate infrastructure.

  4. “The Century of Education” in Germany: to the History of Establishment of National Education System

    OpenAIRE

    Liudmila N. Polunina

    2012-01-01

    The author considers the development of education in Germany in the 19th century in political, social and cultural context, paying a due attention to the most important philosophical and pedagogical ideas which influenced the establishment of national education system

  5. Small Wind Energy Systems

    DEFF Research Database (Denmark)

    Simoes, Marcelo; Farret, Felix Alberto; Blaabjerg, Frede

    2015-01-01

    devices, and a centralized distribution control. In order to establish a small wind energy system it is important to observe the following: (i) Attending the energy requirements of the actual or future consumers; (ii) Establishing civil liabilities in case of accidents and financial losses due to shortage...... costs and guaranteeing an acceptable energy supply. This paper discuss how performance is affected by local conditions and random nature of the wind, power demand profiles, turbine related factors, and presents the technical issues for implementing a self-excited induction generator system, or a......The application of small wind turbines for residential and commercial applications depends on how a microgrid can operate in a suitable way. Because there is variable demand and a random nature of wind resources, it is usually necessary the installation of controllable end-use loads, storage...

  6. Renewable Energy Systems

    DEFF Research Database (Denmark)

    Lund, Henrik

    2014-01-01

    are to be found when the electricity sector is combined with the heating and cooling sectors and/or the transportation sector. Moreover, the combination of electricity and gas infrastructures may play an important role in the design of future renewable energy systems. The paper illustrates why electricity smart...

  7. Wind Energy Systems.

    Science.gov (United States)

    Conservation and Renewable Energy Inquiry and Referral Service (DOE), Silver Spring, MD.

    During the 1920s and 1930s, millions of wind energy systems were used on farms and other locations far from utility lines. However, with passage of the Rural Electrification Act in 1939, cheap electricity was brought to rural areas. After that, the use of wind machines dramatically declined. Recently, the rapid rise in fuel prices has led to a…

  8. Energy systems transformation.

    Science.gov (United States)

    Dangerman, A T C Jérôme; Schellnhuber, Hans Joachim

    2013-02-12

    The contemporary industrial metabolism is not sustainable. Critical problems arise at both the input and the output side of the complex: Although affordable fossil fuels and mineral resources are declining, the waste products of the current production and consumption schemes (especially CO(2) emissions, particulate air pollution, and radioactive residua) cause increasing environmental and social costs. Most challenges are associated with the incumbent energy economy that is unlikely to subsist. However, the crucial question is whether a swift transition to its sustainable alternative, based on renewable sources, can be achieved. The answer requires a deep analysis of the structural conditions responsible for the rigidity of the fossil-nuclear energy system. We argue that the resilience of the fossil-nuclear energy system results mainly from a dynamic lock-in pattern known in operations research as the "Success to the Successful" mode. The present way of generating, distributing, and consuming energy--the largest business on Earth--expands through a combination of factors such as the longevity of pertinent infrastructure, the information technology revolution, the growth of the global population, and even the recent financial crises: Renewable-energy industries evidently suffer more than the conventional-energy industries under recession conditions. Our study tries to elucidate the archetypical traits of the lock-in pattern and to assess the respective importance of the factors involved. In particular, we identify modern corporate law as a crucial system element that thus far has been largely ignored. Our analysis indicates that the rigidity of the existing energy economy would be reduced considerably by the assignment of unlimited liabilities to the shareholders. PMID:23297208

  9. Prospects of Energy Industry in 21st Century - Power Shift to customers

    Energy Technology Data Exchange (ETDEWEB)

    Yang, J.S. [Korea Energy Economics Institute, Euiwang (Korea)

    2001-05-01

    The energy industry in every country is experiencing a radical transformation in its structure. Being a public corporation, the energy industry in most countries was organized as type of vertically integrated monopolistic industrial structure. Removing energy price regulation and entry barriers, many countries have pursued privatization of public energy corporation and transition to market oriented corporation system for the energy industry. Furthermore, the transaction cost in the energy industry has been dramatically lowered due to a rapid technology progress. Such changes inevitably have forced the vertically integrated industry to break down into stand-alone business. Beyond such a superficial change, more importantly, the energy industry faces the fundamental paradigm shift. The new paradigm of the energy industry is characterized: shifting market power from producers to consumers, accelerating globalization and liberalization of energy market, becoming more conscious of risk management, and emerging and enlarging e-Business. The shift in market power from producers to consumers, among these, should be particularly concerned. Energy industry has been traditionally supply-oriented market, resulting in that consumers inevitably take price and quality of energy provided by producers. The progress of technology and liberalization shifts market power from producers to consumers. In the near future, therefore, consumers will choose the energy firms and commodities. Consequently, the firm that does not meets consumers' preferences will face serious setbacks on its development. Such a change in the market power, in the long run, results in lowering energy price and enhancing services. Based on the paradigm shifts described above, the energy firms in the future can be re-categorized into three major types: asset companies, energy trading companies, customer serving companies. Energy trading companies will take charge of energy trade, risk management, and total

  10. Prospects of Energy Industry in 21st Century - Power shift to Customers

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Jin Soo [Korea Energy Economics Institute, Euiwang (Korea)

    2001-05-01

    The energy industry in every country is experiencing a radical transformation in its structure. Being a public corporation, the energy industry in most countries was organized as type of vertically integrated monopolistic industrial structure. Removing energy price regulation and entry barriers, many countries have pursued privatization of public energy corporation and transition to market oriented corporation system for the energy industry. Furthermore, the transaction cost in the energy industry has been dramatically lowered due to a rapid technology progress. Such changes inevitably have forced the vertically integrated industry to break down into stand-alone business. Beyond such a superficial change, more importantly, the energy industry faces the fundamental paradigm shift. The new paradigm of the energy industry is characterized: shifting market power from producers to consumers, accelerating globalization and liberalization of energy market, becoming more conscious of risk management, and emerging and enlarging eBusiness. The shift in market power from producers to consumers, among these, should be particularly concerned. Energy industry has been traditionally supply-oriented market, resulting in that consumers inevitably take price and quality of energy provided by producers. The progress of technology and liberalization shifts market power from producers to consumers. In the near future, therefore, consumers will choose the energy firms and commodities. Consequently, the firm that does not meets consumers' preferences will face serious setbacks on its development. Such a change in the market power, in the long run, results in lowering energy price and enhancing services. Based on the paradigm shifts described above, the energy firms in the future can be re-categorized into three major types: asset companies, energy trading companies, customer serving companies. Energy trading companies will take charge of energy trade, risk management, and total

  11. XBT effects on the global ocean observation system in the early 21st century

    Science.gov (United States)

    Chang, You-Soon; Zhang, Shaoqing

    2016-04-01

    During the early 21st century, we have experienced a transition period of global ocean observing system from expendable bathythermograph (XBT) to Argo. There has been decreasing of XBT observations, but significant increasing of Argo profiles in the global ocean. However, evaluation of the XBT observation system during this period has little been presented. Here, this study investigates the XBT effects on the global ocean observing system by using GFDL data assimilation model. After Argo period, the amount of heat content correction by XBT assimilation is significantly weaken especially in the upper ocean, but it remains in the deeper oceans below 700 m depth within a dynamic model system. This study also confirms that although XBT only provides temperature observations mostly in the upper 700 m of the northern hemisphere, it can affects both temperature and salinity fields of data assimilation system especially in the deep and southern oceans.

  12. Nuclear energy in the 21st century - free from nuclear danger myths

    International Nuclear Information System (INIS)

    In the past year, 2000, the approx. 430 nuclear power plants worldwide covered some 16-17% of the electricity supply. This corresponds, e.g., to the energy equivalent of the aggregate oil production of Saudi Arabia and Iran over the same period of time. The first major steps towards the peaceful uses of nuclear energy in the world were initiated after the 'Atoms for Peace' speech by the then U.S. President, Dwight D. Eisenhower, before the United Nations on December 8, 1953. They were followed by two decades of intense reasearch and development work. The know-how obtained and developed further in this way made countries, such as France and Japan, greatly expand their nuclear power programs under the impact of the two oil price crises in the seventies. As a result, a powerful potential is now available for electricity supply - also in the European Union - which not only offers continuity of supply but also makes an important contribution to reducing emissions which affect our climate. Despite its technical and economic success, the peaceful use of nuclear power, like other technical developments, has become an object of societal criticism in many countries. Two major aspects in this regard are issues of proliferation and the evaluation of the risk of radiation. Although the proliferation risk has been settled technically for the light water reactor line, and can be practically excluded, this has not so far been put to use politically. As far as the effects of low radiation doses are concerned, the question must be answered to what extent the application of the linear dose-effect relationship is an adequate and meaningful reflection of biological reality, and how radiation effects can be evaluated effectively. In the light of the problems to be solved in the 21st century, nuclear power and its potential can and will make important contributions to supplying energy worldwide. (orig.)

  13. Energy Storage System

    Science.gov (United States)

    1996-01-01

    SatCon Technology Corporation developed the drive train for use in the Chrysler Corporation's Patriot Mark II, which includes the Flywheel Energy Storage (FES) system. In Chrysler's experimental hybrid- electric car, the hybrid drive train uses an advanced turboalternator that generates electricity by burning a fuel; a powerful, compact electric motor; and a FES that eliminates the need for conventional batteries. The FES system incorporates technology SatCon developed in more than 30 projects with seven NASA centers, mostly for FES systems for spacecraft attitude control and momentum recovery. SatCon will continue to develop the technology with Westinghouse Electric Corporation.

  14. Prospects of Nuclear Energy in the United States in the 21st Century

    International Nuclear Information System (INIS)

    The Nuclear Industry is now over 40 years old and a proven, mature product has been developed. That proven mature product has evolve into a small set of standardized designs - designs based on evolution of the best and safest features, not revolutionary changes. Just as the product design must be standardized, the regulatory process must also be standardized. With a predictable regulatory environment and rate structure the economic advantages of Nuclear Power will be self-evident. The Nuclear Industry in the United States has had a history of cycles as the economy and need for power has changed. The need for electricity to support growth is a given. With a strong focus on the standardization of the process and the product, a competent engineering approach to safety, and improved economies, the 21st century will see nuclear power assume its appropriate role as a key source in the energy mix in the United States. Presenting a discussion dealing with the future is always a risky thing. One man's prognosis is another mans wild guess. Today, I would like to talk briefly on my views of the future, and especially my views on the Prospects for Nuclear Energy in the U. S. in that future. Though it is clear that nuclear energy will play a key role in fulfilling the energy needs of the world, the future of nuclear energy in the United States is not as clear. A discussion of the future of the U. S. Nuclear Industry is especially appropriate here today because I am firmly confident that the Republic of Korea will play a major role in that future. The world energy situation and the role of nuclear power has undergone a number of upsets in the last decade. Often we tend to dwell on the gloom of the past and overlook the strengths that the Nuclear Industry has developed. Presently over 437 gigawatts of electricity in the world is planned to be produced by 564 nuclear units. There are over 32 countries with commercial nuclear programs. One of the brightest of these being here in

  15. Energy prices will play an important role in determining global land use in the twenty first century

    Science.gov (United States)

    Steinbuks, Jevgenijs; Hertel, Thomas W.

    2013-03-01

    Global land use research to date has focused on quantifying uncertainty effects of three major drivers affecting competition for land: the uncertainty in energy and climate policies affecting competition between food and biofuels, the uncertainty of climate impacts on agriculture and forestry, and the uncertainty in the underlying technological progress driving efficiency of food, bioenergy and timber production. The market uncertainty in fossil fuel prices has received relatively less attention in the global land use literature. Petroleum and natural gas prices affect both the competitiveness of biofuels and the cost of nitrogen fertilizers. High prices put significant pressure on global land supply and greenhouse gas emissions from terrestrial systems, while low prices can moderate demands for cropland. The goal of this letter is to assess and compare the effects of these core uncertainties on the optimal profile for global land use and land-based GHG emissions over the coming century. The model that we develop integrates distinct strands of agronomic, biophysical and economic literature into a single, intertemporally consistent, analytical framework, at global scale. Our analysis accounts for the value of land-based services in the production of food, first- and second-generation biofuels, timber, forest carbon and biodiversity. We find that long-term uncertainty in energy prices dominates the climate impacts and climate policy uncertainties emphasized in prior research on global land use.

  16. New Development of Accelerator Methods for Energy Production in the 21st Century - Alternative to Nuclear reactors

    International Nuclear Information System (INIS)

    In recent years, and particularly in light of a growing influence of ecological and political factors in the field of energy development, new concepts of nuclear technology based on the use of nuclear particle accelerators are being considered. Subcritical source-driven nuclear systems (SSDNS) are given close attention, whereby the application of a high-intensity external neutronic source can cause major fission power by affecting the subcritical nucleus. Recent research within the project of the accelerator driven transmutation technology (ADTT) in Los Alamos shows that now it is possible to use this concept, specially owing to a considerable improvement of the high-power accelerators predominantly realised in the military project for the development of space weapons. Accelerator driven neutronic spallation is considered a particularly promising source in achieving the subcritical fission. The project also reviews the development of new technologies related to the problem of nuclear waste by means of accelerator driven transmutation of waste (ATW). This method could result in the demolition of plutonium, trans-uranium elements and long-lasting fission products and thereby in their removal from the environment- Possible consequences of ADTT and ATW on the energy sector development in the 21st century are being considered. (author)

  17. Energy storage connection system

    Science.gov (United States)

    Benedict, Eric L.; Borland, Nicholas P.; Dale, Magdelena; Freeman, Belvin; Kite, Kim A.; Petter, Jeffrey K.; Taylor, Brendan F.

    2012-07-03

    A power system for connecting a variable voltage power source, such as a power controller, with a plurality of energy storage devices, at least two of which have a different initial voltage than the output voltage of the variable voltage power source. The power system includes a controller that increases the output voltage of the variable voltage power source. When such output voltage is substantially equal to the initial voltage of a first one of the energy storage devices, the controller sends a signal that causes a switch to connect the variable voltage power source with the first one of the energy storage devices. The controller then causes the output voltage of the variable voltage power source to continue increasing. When the output voltage is substantially equal to the initial voltage of a second one of the energy storage devices, the controller sends a signal that causes a switch to connect the variable voltage power source with the second one of the energy storage devices.

  18. Solar energy collector system

    Energy Technology Data Exchange (ETDEWEB)

    Dumbeck, R.F.

    1982-04-13

    Simple flat plate reflectors, preferably compound of a panel with a reflector surface layer laminated thereto, are pivoted to move with the position of the sun and concentrate additional energy on a solar energy collector panel. The array can take a tented or triangular end view shape for closing to protect reflective surfaces from hail or sandstorm, etc. Also the surfaces are provided with a periodically operable surface cleaner to assure long term efficiency even when remotely positioned as on roof top. Low cost present day computers are programmed to track the sun over its seasonal variations by means of simple mechanisms pivoting the reflector plates. The system is self-energizing by means of batteries charged by solar panels accompanying the system. Solar energy is storable in a self-contained water tank for use at night, etc. And efficient energy conversion is attained by means of a stainless steel pipe length extending into the stored water and thermally coupled outside the tank to a solar heated higher than 100* C. Silicon oil circulated through the solar collector. Thus, vaporization is avoided and an effective lowcost simplified thermal energy conversion is effected.

  19. Energy systems transformation

    Science.gov (United States)

    Dangerman, A. T. C. Jérôme; Schellnhuber, Hans Joachim

    2013-01-01

    The contemporary industrial metabolism is not sustainable. Critical problems arise at both the input and the output side of the complex: Although affordable fossil fuels and mineral resources are declining, the waste products of the current production and consumption schemes (especially CO2 emissions, particulate air pollution, and radioactive residua) cause increasing environmental and social costs. Most challenges are associated with the incumbent energy economy that is unlikely to subsist. However, the crucial question is whether a swift transition to its sustainable alternative, based on renewable sources, can be achieved. The answer requires a deep analysis of the structural conditions responsible for the rigidity of the fossil-nuclear energy system. We argue that the resilience of the fossil-nuclear energy system results mainly from a dynamic lock-in pattern known in operations research as the “Success to the Successful” mode. The present way of generating, distributing, and consuming energy—the largest business on Earth—expands through a combination of factors such as the longevity of pertinent infrastructure, the information technology revolution, the growth of the global population, and even the recent financial crises: Renewable-energy industries evidently suffer more than the conventional-energy industries under recession conditions. Our study tries to elucidate the archetypical traits of the lock-in pattern and to assess the respective importance of the factors involved. In particular, we identify modern corporate law as a crucial system element that thus far has been largely ignored. Our analysis indicates that the rigidity of the existing energy economy would be reduced considerably by the assignment of unlimited liabilities to the shareholders. PMID:23297208

  20. Energy Efficient Mobile Operating Systems

    OpenAIRE

    Muhammad Waseem

    2013-01-01

    Energy is an important resource in mobile computers now days. It is important to manage energy in efficient manner so that energy consumption will be reduced. Developers of operating system decided to increase the battery life time of mobile phones at operating system level. So, design of energy efficient mobile operating system is the best way to reduce the energy consumption in mobile devices. In this paper, currently used energy efficient mobile operating system is discussed and compared. ...

  1. A legislative program to plan energy strategies for the 21st century and to demonstrate the role of nuclear power

    International Nuclear Information System (INIS)

    In April 1989, the State Legislative Leaders Foundation and Arizona State University presented a national program, Energy Strategies for the 21st Century. Participants included state legislative leaders and key committee chairs from across the nation. The purpose of this program was to give legislative leaders an opportunity to examine and discuss many of the critical issues that will shape future energy policy. The participants were actively involved in developing realistic energy strategies. The scenarios had to use available and realistic future energy technologies. Their solutions were required to be both economically and environmentally compatible and acceptable to their constituents

  2. FOREWORD: The XXV IAHR Symposium on Hydraulic Machinery and Systems marks half a century tradition

    Science.gov (United States)

    Susan-Resiga, Romeo

    2010-05-01

    IAHR75_logoUPT90_logoARFT_logo International Association of Hydro-Environment Engineering and Research'Politehnica' University of TimisoaraRomanian Academy - Timisoara Branch The 25th edition of the IAHR Symposium on Hydraulic Machinery and Systems, held in Timisoara, Romania, 20-24 September 2010, jointly organized by the 'Politehnica' University of Timisoara and the Romanian Academy - Timisoara Branch, marks a half century tradition of these prestigious symposia. However, it is the first time that Romania hosts such a symposium, and for good reasons. The Romanian electrical power system has a total of 20,630 MW installed power, out of which 6,422 MW in hydropower plants. The energy produced in hydropower facilities was in 2008 of 17,105 GWh from a total of 64,772 GWh electrical energy production. Moreover, for the period 2009-2015, new hydropower capacities are going to be developed, with a total of 2,157 MW installed power and an estimated 5,770 GWh/year energy production. Within the same period of time, the refurbishment, modernization and repair programs will increase the actual hydropower production with an estimated 349 GWh/year. The 'Politehnica' University of Timisoara is proud to host the 25th IAHR Symposium on Hydraulic Machinery and Systems, in the year of its 90th anniversary. The 'Politehnica' University of Timisoara is one of the largest and most well-known technical universities from Central and Eastern Europe. It was founded in 1920, a short time after the union into one state of all the Romanian territories, following the end of the First World War, in order to respond to the need engineers felt by the Romanian society at that time, within the economical development framework. During its 90 years of existence, 'Politehnica' University of Timisoara educated over 100,000 engineers, greatly appreciated both in Romania and abroad, for their competence and seriousness. King Ferdinand I of Romania said while visiting the recently established

  3. Economic thinking, sustainable development and the role of solar energy in the 21st century

    International Nuclear Information System (INIS)

    The long term survival of mankind will only be possible if economic thinking as well as economic theory understands that the world economy is only a subsystem of the global ecological system. Only if the scale of the economic system stays within the limits determined by the long term resource availability and the assimilative capacity of the global ecological system, sustainable development and the survival of mankind can be achieved. Solar energy as the only long term energy source supplied from outside the global ecological system needs to be a central building block of sustainable development. Today the main obstacle for a widespread use of solar energy is its relative price. The paper shows that the present prices of non-renewable energy sources are heavily subsidized by not including the costs of health and environmental damages as well as the long term costs of wasting non-renewable energy sources at the expense of future generations. If these costs are taken into account the relative costs of solar energy look far more favorable than present market prices show. Photovoltaic electricity generation may become cost effective within this decade

  4. Nuclear energy: 21st century promise. 10 October 2005, Budapest, Hungary

    International Nuclear Information System (INIS)

    What role will nuclear energy play can not be can not be answered definitively, but IAEA projections for the coming decades are markedly higher than they were even five years ago. Nuclear reactors currently generate electricity for nearly 1 billion people, producing about 16% of the world's electricity. This percentage has held relatively steady for more than a decade, keeping pace with the steady expansion in the global electricity market. But in just the past few years, we have witnessed a significant change in attitudes towards nuclear power. Fast growing global energy demands, an increased emphasis on the security of energy supply, and the risk of climate change are driving a renewed consideration, in many quarters, towards investment in nuclear power. This past March, at an international ministerial conference in Paris, participants from 65 countries were upbeat regarding the role of nuclear power in meeting 21st century electricity and energy needs. Near term nuclear growth remains centred in Asia and Eastern Europe, which together account for 22 of the 24 units now under construction. The Russian Federation intends to double its nuclear generating capacity by 2020; China plans nearly a six-fold expansion in capacity by the same date; and India anticipates a ten-fold increase by 2022. Elsewhere, plans remain more modest, but it is clear that nuclear energy is regaining stature as a serious option. When Finland began pouring concrete for Olkiluoto-3 earlier this year, it was the first new nuclear construction in Western Europe since 1991. France will likely be next, with construction of a European Pressurized Water Reactor (EPR) at Flamanville scheduled to start in 2007. Some 'newcomer' developing countries, such as Indonesia and Vietnam, are also moving steadily forward with plans for nuclear power investment. And at last month's IAEA General Conference in Vienna, a host of countries were discussing plans and possibilities for initiating or expanding nuclear

  5. Professional Responsibility and the Welfare System in Spain at the Turn of the 19th Century

    Directory of Open Access Journals (Sweden)

    León Sanz, Pilar

    2006-11-01

    Full Text Available This essay analyzes the attitudes of physicians prior to the establishment of a social welfare system in Spain, based on professional sources from 1890-1910. Firstly we revised the Systems of Collectivised Assistance during the Transition from the 19th to the 20th Century; then, the article discusses the corporativist reaction of Physicians to the different Welfare Systems. We observe that the criticism of insurance companies was unanimous. Nonetheless, there was a diversity of opinions regarding mutual societies and the associations of mutual assistance. The professional arguments used against the associations, mutuals and insurance companies were formulated around, in addition to the professional instability of the times, the changes in civil and criminal responsibility of the physician as a result of new legal regulations. We found physicians in favour of establishing a welfare system that was not exclusively public and which, in addition to benefiting the needy, would benefit the interests of the profession as well.

  6. Cold-fusion as safe and hazardless energy-source of the 21st century

    International Nuclear Information System (INIS)

    Out of the two processes for nuclear-energy; nuclear-fission is plagued with problem of nuclear-radiation hazard, whereas though nuclear-fusion is safe but almost impossible to be done on earth specially at room- temperature. In 1989, two scientists Fleischmann and Pons in USA proposed a table-top, room temperature electrolysis-experiment of heavy-water with palladium-electrode; this is commonly called cold-fusion wherein nuclear-fusion is said to be taking place. This created a big storm and controversy in the scientific community. Initially the cold-fusion was heavily criticized and several objections (such as: non-reproducibility, non-observation of telltale signature of nuclear-reaction) were raised. The research-work of McKubre and others have clarified the objections and have established that for cold-fusion to take place certain threshold conditions (such as purity of electrode, current-density, deuterium to palladium loading ratio) needs to be satisfied. In due course of time, the Truth prevailed and the cold-fusion got more and more support by many scientists in several countries including India (BARC historic role has been appreciated worldwide). Biggest objection, however, was lack of a proper theory for how Coulomb-repulsion is overcome in cold-fusion. A possible explanation for how the Coulomb-repulsion is overcome, is given in this paper; which is based on a new-found Gupta-Dinu effect, which is a natural outcome of special-relativity via modification in Lorentz force formula. The recent nuclear-accidents have raised international-opinion against nuclear-fission, whereas sin-like hot-fusion on earth is not possible. Now it seems that ultimately it is the cold-fusion which will provide hazardless neat and cheap energy for the 21st century and India could play a leading role in this direction. (author)

  7. Energy demands in the 21st century: the role of biofuels in a developing country

    International Nuclear Information System (INIS)

    In most developing countries more than 25% of total energy use comes from biofuels. In Ghana, the figure is between 70-80%. Bioenergy is mainly used for cooking and heating, and is also important in rural or cottage industries. As a developing country, Ghana's economic growth remains coupled to the availability and supply of energy. About 29% of this energy is obtained through hydropower and imported petroleum. The two hydropower installations generate about 1102 MW annually mainly for domestic and industrial uses. At the current 3.0% average annual population growth rate, a population of about 35 million is expected by 2025. Coupled with the country's efforts to promote industrialization, future energy demand is expected to increase several fold. This paper provides an overview of Ghana's current energy situation and discusses the role of bioenergy in the future energy demand of the country. The paper concludes with a recommendation for a major shift in energy policy to accommodate the conversion of biofuels into versatile energy carriers in a decentralised system to meet the energy requirements of the people and to provide a basis for rural development and employment. (Author)

  8. Thermoelectric energy system

    International Nuclear Information System (INIS)

    A thermoelectric energy system is described comprising: (A) at least first and second separated electrodes, said electrodes including copper; (B) a liquid electrolyte comprising a source of copper ions and a material for complexing the ions, the complexing material being selected from the group consisting of one or a combination of a source of tartrate, a source of ethylenediaminetetraacetic acid,a source of gluconate, lactic acid, malic acid, citric acid, oxalic acid, and a source of silicon dioxide, the electrolyte being disposed between and in contact with the electrodes to provide a metal ion conduction path which extends substantially the entire distance between the electrodes; (C) an electric circuit connected to the electrodes for removal of electrical energy from the system; and (D) means for establishing a temperature gradient within said electrolyte whereby the average temperature of one of said electrodes will be greater than that of the other of said electrodes to thereby produce a voltage across the electrodes

  9. Energy Markets: Challenges of the New Century; Energy for World, Energy for Peace; proposal of Conclusions and Recommendations

    International Nuclear Information System (INIS)

    World Energy Council was discussing at 18th World Energy Congress in Buenos Aires (Argentina) about following topics: inconstant prices of the oil and gas; cleaner technologies of burn up of oil, gas and coal; mutual relation between gas and electric energy and complex energy services; gas and drinking water; nuclear energy, hydroelectric power plant and CO2 emission; renewable energy and distributed production based on local resources; competition and efficiency

  10. Hydrogen energy systems studies

    Energy Technology Data Exchange (ETDEWEB)

    Ogden, J.M.; Steinbugler, M.; Dennis, E. [Princeton Univ., NJ (United States)] [and others

    1995-09-01

    For several years, researchers at Princeton University`s Center for Energy and Environmental Studies have carried out technical and economic assessments of hydrogen energy systems. Initially, we focussed on the long term potential of renewable hydrogen. More recently we have explored how a transition to renewable hydrogen might begin. The goal of our current work is to identify promising strategies leading from near term hydrogen markets and technologies toward eventual large scale use of renewable hydrogen as an energy carrier. Our approach has been to assess the entire hydrogen energy system from production through end-use considering technical performance, economics, infrastructure and environmental issues. This work is part of the systems analysis activity of the DOE Hydrogen Program. In this paper we first summarize the results of three tasks which were completed during the past year under NREL Contract No. XR-11265-2: in Task 1, we carried out assessments of near term options for supplying hydrogen transportation fuel from natural gas; in Task 2, we assessed the feasibility of using the existing natural gas system with hydrogen and hydrogen blends; and in Task 3, we carried out a study of PEM fuel cells for residential cogeneration applications, a market which might have less stringent cost requirements than transportation. We then give preliminary results for two other tasks which are ongoing under DOE Contract No. DE-FG04-94AL85803: In Task 1 we are assessing the technical options for low cost small scale production of hydrogen from natural gas, considering (a) steam reforming, (b) partial oxidation and (c) autothermal reforming, and in Task 2 we are assessing potential markets for hydrogen in Southern California.

  11. 2000 U.S. Department of Energy Strategic Plan: Strength through Science Powering the 21st Century

    Energy Technology Data Exchange (ETDEWEB)

    None,

    2000-09-01

    The Department of Energy conducts programs relating to energy resources, national nuclear security, environmental quality, and science. In each of these areas, the US is facing significant challenges. Our economic well-being depends on the continuing availability of reliable and affordable supplies of clean energy. Our Nation's security is threatened by the proliferation of weapons of mass destruction. Our environment is under threat from the demands a more populated planet and the legacies of 20th-century activities. Science and the technology derived from it offer the promise to improve the Nation's health and well-being and broadly expand human knowledge. In conducting its programs, the Department of Energy (DOE) employs unique scientific and technical assets, including 30,000 scientists, engineers, and other technical staff, in a complex of outstanding national laboratories that have a capital value of over $45 billion. Through its multidisciplinary research and development activities and its formidable assemblage of scientific and engineering talent, DOE focuses its efforts on four programmatic business lines: (1) Energy Resources--promoting the development and deployment of systems and practices that provide energy that is clean, efficient, reasonably priced, and reliable. (2) National Nuclear Security--enhancing national security through military application of nuclear technology and by reducing global danger from the potential spread of weapons of mass destruction. (3) Environmental Quality--cleaning up the legacy of nuclear weapons and nuclear research activities, safely managing nuclear materials, and disposing of radioactive wastes. (4) Science--advancing science and scientific tools to provide the foundation for DOE's applied missions and to provide remarkable insights into our physical and biological world. In support of the above four business lines, DOE provides management services to ensure that the technical programs can run efficiently. Our

  12. 'A la carte' in advanced nuclear energy. Challenges in the 21st Century

    International Nuclear Information System (INIS)

    Here was introduced some parts of advanced efforts in the nuclear energy field recently carried out at universities and institutes in Japan. They have 100 items on summarized advanced nuclear informations, containing 1) new nuclear power generation system and its back-end technologies, 2) nuclear fuels and upgrading on thermal flow technology in reactors, 3) advancement on structural engineering and maintenance engineering of power plants, 4) technical innovation in human man-machine system and robots, 5) advancement of quantum beam engineering and efforts onto realization of nuclear fusion reactors, and 6) safety security on radiation and nuclear energy and their countermeasure to social and environmental problems. (G.K.)

  13. Energy-Systems Economic Analysis

    Science.gov (United States)

    Doane, J.; Slonski, M. L.; Borden, C. S.

    1982-01-01

    Energy Systems Economic Analysis (ESEA) program is flexible analytical tool for rank ordering of alternative energy systems. Basic ESEA approach derives an estimate of those costs incurred as result of purchasing, installing and operating an energy system. These costs, suitably aggregated into yearly costs over lifetime of system, are divided by expected yearly energy output to determine busbar energy costs. ESEA, developed in 1979, is written in FORTRAN IV for batch execution.

  14. Designing a sustainable electric system for the 21. Century. 5 sessions

    International Nuclear Information System (INIS)

    The UNIPEDE (International Union of Producers and Distributors of Electrical Energy) conference is composed of 97 communications grouped in 5 sessions which titles and main themes are: opportunities to increase electricity use for sustainable development (energy efficiency improvement, technology substitution, environmental issues); electric system expansion and integration to meet growing competition (interconnected systems, electricity transfer, distribution system upgrade, system reliability, superconductive systems); power producers and global climate change issues (electricity generation, renewable energies, combined cycle, rational energy use, reduction of emissions, efficiency improvements); technology for supplying electricity in developing and transitional economies development strategies, financial factor and international investments, technology transfer and implementation, transmission systems); power industry structure, regulatory policies and technological innovation (demand side management, deregulation, competitive energy markets, legislative and economic policy changes). 48 communications were considered in the INIS scope, 41 in the ETDE scope and 7 out of scope

  15. Nuclear energy in the 21st century. Address at Joint IAEA/CNNC seminar on 21st century nuclear energy development in China, 23 May 1997 Beijing

    International Nuclear Information System (INIS)

    The address discusses the following issues: the increasing demand for energy; the energy efficiency factor; the role of oil and gas; fossil fuels and environment; share of renewable in the future; evolution toward higher density energy sources; factors influencing the choice of the nuclear option; new generations of nuclear power plants; waste management; nuclear safety; strengthening safeguards; nuclear power and nuclear weapons

  16. Multiple Energy System Analysis of Smart Energy Systems

    DEFF Research Database (Denmark)

    Thellufsen, Jakob Zinck

    2015-01-01

    To eliminate the use of fossil fuels in the energy sector it is necessary to transition to future 100% renewable energy systems. One approach for this radical change in our energy systems is Smart Energy Systems. With a focus on development and interaction between smart electricity grids, smart...... guidelines to municipalities in the transition to future 100% renewable Smart Energy Systems. A tool with such capabilities enables better discussions of energy systems and can potentially handle multiple country analyses. This paper discusses the development and consequences of modelling an energy system...... analysis tools capable of handling multiple system. This includes a review of how interconnection works, and what assumptions make sense when integrating them in large scale analysis of national energy systems. The result of the paper is the development of an actual tool capable of simulating and analyzing...

  17. A study on the energy civilization in the 21st century and the analysis of the span of life or the energy recourses

    International Nuclear Information System (INIS)

    This study should have been mainly composed of the pre-estimate of the future views on the balancing of energy demand and supply in the 21st century related to global environmental matters and the analysis of the span of life of the usable energy resources in the 21st century. Due to the project interruption by the PBS input, this study carried out partly the investigation and the analysis of energy demand supply, which regarded to economic circumstances and environmental control regulations. Therefore, this intermediate report shall be an important reference to analyze the span of practical life of the usable energy resources in order to improve the usable capability of energy utilization for the future. 14 refs. (Author)

  18. Fusion energy for space missions in the 21st century: Executive summary

    Science.gov (United States)

    Schulze, Norman R.

    1991-01-01

    Future space missions were hypothesized and analyzed, and the energy source of their accomplishment investigated. The missions included manned Mars, scientific outposts to and robotic sample return missions from the outer planets and asteroids, as well as fly-by and rendezvous missions with the Oort Cloud and the nearest star, Alpha Centauri. Space system parametric requirements and operational features were established. The energy means for accomplishing missions where delta v requirements range from 90 km/sec to 30,000 km/sec (High Energy Space Mission) were investigated. The need to develop a power space of this magnitude is a key issue to address if the U.S. civil space program is to continue to advance as mandated by the National Space Policy. Potential energy options which could provide the propulsion and electrical power system and operational requirements were reviewed and evaluated. Fusion energy was considered to be the preferred option and was analyzed in depth. Candidate fusion fuels were evaluated based upon the energy output and neutron flux. Additionally, fusion energy can offer significant safety, environmental, economic, and operational advantages. Reactors exhibiting a highly efficient use of magnetic fields for space use while at the same time offering efficient coupling to an exhaust propellant or to a direct energy convertor for efficient electrical production were examined. Near term approaches were identified. A strategy that will produce fusion powered vehicles as part of the space transportation infrastructure was developed. Space program resources must be directed toward this issue as a matter of the top policy priority.

  19. Searching for an idealistic nuclear energy system. The thorium molten-salt nuclear energy synergetic system

    International Nuclear Information System (INIS)

    The solar-based energy should become a global major one at the end of this century. The intermediate between fossil and solar energies has to be filled by the fission energy. For the decisive improvement of its safety, radioactive-waste and plutonium issues, the Thorium Molten-Salt Nuclear Energy Synergetic System should be established by the use of fluid-fuel of 7LiF-BeF2-based molten fluoride salt, as a triple functional medium for nuclear-reaction, heat-transfer and chemical-process without radiation-damage. This system is composed of simple and economical fuel-self-sustaining small power reactors and Accelerator Molten-Salt Breeders for spallation breeding. The economical extinction of radioactive-wastes will be achieved by using excess fuel (neutron) at the phase-out period of this system near the end of this century. This technology will be essential for solving global environmental and poverty issues and for the complete abolition of nuclear weapons. (author)

  20. Two energy system analysis - tools

    DEFF Research Database (Denmark)

    Lund, Henrik; Andersen, Anders N.; Antonoff, Jayson

    2004-01-01

    The chapter illustrates some of the different types of problems that must be solved when analysing energy systems.......The chapter illustrates some of the different types of problems that must be solved when analysing energy systems....

  1. The Strategic Petroleum Reserve: United States energy security, oil politics, and petroleum reserves policies in the twentieth century

    Science.gov (United States)

    Beaubouef, Bruce Andre

    The history of U.S. petroleum reserves policies in the twentieth century, including the Strategic Petroleum Reserve (SPR) program, provides a case study of the economic and political aspects of national security, and shows the ways in which the American political economy influences national security. One key problem plagued federal petroleum reserve programs and proposals throughout the twentieth century. In a political economy which traditionally placed strong emphasis upon the sanctity of private property and free markets, could the government develop an emergency petroleum reserve policy despite opposition from the private sector? Previous literature on the SPR and oil-stockpiling programs has largely disregarded the historical perspective, focusing instead upon econometric models, suggesting future oil-stockpiling policy options. This study will also make conclusions about the future of governmental oil-stockpiling policies, particularly with regard to the SPR program, but it will do so informed by a systematic history of the emergency petroleum reserve impulse in the twentieth century. Through a study of the emergency petroleum reserve impulse, one can see how the American political economy of oil and energy changed over the twentieth century. As petroleum became crucial to the military and then economic security of the United States, the federal government sought to develop emergency petroleum reserves first for the military, then for the civilian economy. But while the American petroleum industry could deliver the energy "goods" to American energy consumers at a reasonable price, the companies reigned supreme in the political equation. While that was true, federal petroleum reserve programs and proposals conflicted with and were overwhelmed by the historic American tradition of individual economic and private property rights. The depletion of American petroleum reserves changed that political equation, and the ensuing energy crises of the 1970s not only

  2. Energy System Analysis of 100 Per cent Renewable Energy Systems

    DEFF Research Database (Denmark)

    Lund, Henrik; Mathiesen, Brian Vad

    2007-01-01

    This paper presents the methodology and results of the overall energy system analysis of a 100 per cent renewable energy system. The input for the systems is the result of a project of the Danish Association of Engineers, in which 1600 participants during more than 40 seminars discussed and desig......This paper presents the methodology and results of the overall energy system analysis of a 100 per cent renewable energy system. The input for the systems is the result of a project of the Danish Association of Engineers, in which 1600 participants during more than 40 seminars discussed...... the electricity supply and demand and to exchange electricity productions on the international electricity markets. The results are detailed system designs and energy balances for two energy target years: year 2050 with 100 per cent renewable energy from biomass and combinations of wind, wave and solar power...

  3. Risoe energy report 7. Future low carbon energy systems

    Energy Technology Data Exchange (ETDEWEB)

    Larsen, Hans; Soenderberg Petersen, L. (eds.)

    2008-10-15

    This Risoe Energy Report, the seventh of a series that began in 2002, takes as its point of reference the recommendations of the Intergovernmental Panel on Climate Change (IPCC) in 2007. The IPCC states that if anticipated climate change is to remain in the order of 2 to 3 degrees centigrades over the next century, the world's CO{sub 2} emissions would have to peak within the next 10-15 years and ultimately be reduced to approximately 50% of their present level by the middle of the century. The IPCC states further that this would be possible, provided that serious action is taken now. The different regions and countries of the world are in various states of development, and hence have different starting points for contributing to these reductions in CO{sub 2} emissions. This report presents state-of-the-art and development perspectives for energy supply technologies, new energy systems, end-use energy efficiency improvements and new policy measures. It also includes estimates of the CO{sub 2} reduction potentials for different technologies. The technologies are characterized with regard to their ability to contribute either to ensuring a peak in CO{sub 2} emissions within 10-15 years, or to long-term CO{sub 2} reductions. The report outlines the current and likely future composition of energy systems in Denmark, and examines three groups of countries: i) Europe and the other OECD member nations; ii) large and rapidly growing developing economies, notably India and China; iii) typical least developed countries, such as many African nations. The report emphasises how future energy developments and systems might be composed in these three country groupings, and to what extent the different technologies might contribute. The report addresses the need for research and demonstration together with market incentives, and policy measures with focus on initiatives that can promote the development towards CO{sub 2} reductions. Specifically, the report identifies system

  4. Energy supply concepts in the 21st century - the role of nuclear power. 2002 winter meeting of 'Deutsches Atomforum'

    International Nuclear Information System (INIS)

    The 2002 Winter Meeting organized by the Deutsches Atomforum e.V. was devoted to the topic of 'Energy Supply in the 21st Century - the Role of Nuclear Power'. Before a large audience of participants from Germany and abroad experts from science and research, industry and politics discussed a broad range of problems arising with respect to the future national, European, and global structure of energy supply. The new impulses nuclear power is receiving in the United States and in Finland were presented along with the contributions potentially coming from non-nuclear sources of energy, including the importance of renewable energies. The conclusion to be drawn from all contributions is the recognition that boundary conditions and constraints demand a balanced energy mix, which can be achieved only in a liberal environment free from any political or ideological discrimination. (orig.)

  5. A multipurpose pollution-free high temperature heat supply system for 21st century service

    International Nuclear Information System (INIS)

    In the 21st century, increasing environmental concerns, together with decreasing fossil fuel resources, will result in a gradual transition in the power industry to the use of nuclear energy on a global scale. The demand for energy to meet growing populations and the needs of industry, transportation, and the heating market, will be based on the increasing use of electricity and hydrogen, these being produced, first by fission and later by fusion reactors. The realization of this scenario will be the deployment of a high temperature reactor (HTR), which together with a heat transport loop constitutes a nuclear heat source (NHS). The initial large-scale use of the NHS will likely be for nuclear process heat, namely the fossil-free production of hydrogen by thermochemical water splitting. The same NHS will also be used for the high efficiency generation of electricity using an indirect cycle helium gas turbine. An important stepping stone towards this goal will be the operation of a high temperature test reactor (HTTR) currently under construction in Japan. This will pave the way for introduction of the HTR for hydrogen production and electricity generation around the year 2020. This paper puts into perspective technological aspects of a futuristic, pollution free, high temperature nuclear heat source

  6. Retrospection of development for radioisotope power systems in space and its prospect of application in new century

    International Nuclear Information System (INIS)

    Up to now, more than 80 spacecrafts with nuclear power systems including radioisotope power and reactor power are launched by USA and Russia. This paper retrospects to the developing history and usage status of radioisotope thermoelectric generator (RTG) used in space in the 20th century. The technical level of RTG and the recent trends of raising the efficiency of thermo-electric conversion are summarized. The space and solar system exploration programs with RTG for USA, Russia nad ESA early in the 21st century (2001/2015) are generally described. It shows that the wide prospect of RTG's application. (authors)

  7. Integrated roof wind energy system

    OpenAIRE

    Moonen S.P.G.; Dano B.; Ferraro R.M.; Suma A.B.

    2012-01-01

    Wind is an attractive renewable source of energy. Recent innovations in research and design have reduced to a few alternatives with limited impact on residential construction. Cost effective solutions have been found at larger scale, but storage and delivery of energy to the actual location it is used, remain a critical issue. The Integrated Roof Wind Energy System is designed to overcome the current issues of urban and larger scale renewable energy system. The system is built up by an axial ...

  8. Energy model in regional energy system

    International Nuclear Information System (INIS)

    In this report is presented a computational model for analysis of energy, materials and mass flux in a complex energy system, at regional scale level. Specifically is described a calculation model of electric power generation for emission forecasting of CO2, SOx, NOx, particulate matter, ashes, limestone, chalks

  9. Selected legal and regulatory concerns affecting domestic energy transportation systems

    Energy Technology Data Exchange (ETDEWEB)

    Schuller, C.R.

    1979-07-01

    This report provides assessments of eight legal and regulatory concerns that may affect energy material transportation in the US during the rest of the century: state authority to regulate nuclear materials transport, divestiture of petroleum pipelines from major integrated oil companies, problems affecting the natural gas transportation system, capabilities of energy transportation systems during emergencies, Federal coal pipeline legislation, ability of Federal agencies to anticipate railroad difficulties, abandonment of uneconomic railroad lines, and impact of the Panama Canal treaty upon US energy transportation. (DLC)

  10. Micro-electro-mechanical systems (MEMS: Technology for the 21st century

    Directory of Open Access Journals (Sweden)

    Đakov Tatjana A.

    2014-01-01

    Full Text Available Micro-electro-mechanical systems (MEMS are miniturized devices that can sense the environment, process and analyze information, and respond with a variety of mechanical and electrical actuators. MEMS consists of mechanical elements, sensors, actuators, electrical and electronics devices on a common silicon substrate. Micro-electro-mechanical systems are becoming a vital technology for modern society. Some of the advantages of MEMS devices are: very small size, very low power consumption, low cost, easy to integrate into systems or modify, small thermal constant, high resistance to vibration, shock and radiation, batch fabricated in large arrays, improved thermal expansion tolerance. MEMS technology is increasingly penetrating into our lives and improving quality of life, similar to what we experienced in the microelectronics revolution. Commercial opportunities for MEMS are rapidly growing in broad application areas, including biomedical, telecommunication, security, entertainment, aerospace, and more in both the consumer and industrial sectors on a global scale. As a breakthrough technology, MEMS is building synergy between previously unrelated fields such as biology and microelectronics. Many new MEMS and nanotechnology applications will emerge, expanding beyond that which is currently identified or known. MEMS are definitely technology for 21st century.

  11. National Energy Outlook Modelling System

    Energy Technology Data Exchange (ETDEWEB)

    Volkers, C.M. [ECN Policy Studies, Petten (Netherlands)

    2013-12-15

    For over 20 years, the Energy research Centre of the Netherlands (ECN) has been developing the National Energy Outlook Modelling System (NEOMS) for Energy projections and policy evaluations. NEOMS enables 12 energy models of ECN to exchange data and produce consistent and detailed results.

  12. Solar Energy: Solar System Economics.

    Science.gov (United States)

    Knapp, Henry H., III

    This module on solar system economics is one of six in a series intended for use as supplements to currently available materials on solar energy and energy conservation. Together with the recommended texts and references (sources are identified), these modules provide an effective introduction to energy conservation and solar energy technologies.…

  13. Integrated energy systems and local energy markets

    DEFF Research Database (Denmark)

    Lund, Henrik; Münster, Ebbe

    2006-01-01

    Significant benefits are connected with an increase in the flexibility of the Danish energy system. On the one hand, it is possible to benefit from trading electricity with neighbouring countries, and on the other, Denmark will be able to make better use of wind power and other types of renewable...... energy in the future. This paper presents the analysis of different ways of increasing flexibility in the Danish energy system by the use of local regulation mechanisms. This strategy is compared with the opposite extreme, i.e. trying to solve all balancing problems via electricity trade...

  14. Federal Energy Information Systems.

    Science.gov (United States)

    Coyne, Joseph G.; Moneyhun, Dora H.

    1979-01-01

    Describes the Energy Information Administration (EIA) and the Technical Information Center (TIC), and lists databases accessible online to the Department of Energy and its contractors through DOE/RECON. (RAA)

  15. Constitutional compatibility of energy systems

    International Nuclear Information System (INIS)

    The paper starts from the results of the Enquiry Commission on 'Future Nuclear Energy Policy' of the 8th Federal German Parliament outlining technically feasible energy futures in four 'pathways'. For the purpose of the project, which was to establish the comparative advantages and disadvantages of different energy systems, these four scenarios were reduced to two alternatives: cases K (= nuclear energy) and S (= solar energy). The question to Ge put is: Which changes within our legal system will be ushered in by certain technological developments and how do these changes relate to the legal condition intended so far. Proceeding in this manner will not lead to the result of a nuclear energy system or a solar energy system being in conformity or in contradiction with the constitutional law, but will provide a catalogue of implications orientated to the aims of legal standards: a person deciding in favour of a nuclear energy system or a solar energy system supports this or that development of constitutional policy, and a person purishing this or that aim of legal policy should be consistent and decide in favour of this or that energy system. The investigation of constitutional compatibility leads to the question what effects different energy systems will have on the forms of political intercourse laid down in the constitutional law, which are orientated to models of a liberal constitutional tradition of citizens. (orig./HSCH)

  16. Critique of War Reason. A Perspective on Self-referential Systems, 11th-21st Centuries

    Directory of Open Access Journals (Sweden)

    Gorm Harste

    2016-03-01

    Full Text Available This paper is a summary of my 700-page very academic thesis, in Danish, to be published by Aarhus University Press (AUP. A shorter booklet based on it was published by AUP too (November 2014, 250 pages and so were a number of shorter articles in English, French and German. In Luhmann’s systems theory and in sociology at large there is a missing link consisting in the lack of a sociology of war. A number of German systems theoreticians use Luhmann’s theory to fill that gap. Yet Luhmann (born 1927, who was a soldier and a prisoner of war from age 15-17, would not write a “Der Krieg der Gesellschaft”. The attempt to narrow this lacuna is indeed a heavy burden and a difficult task, in which it is decisive firstly to get the basic distinctions right about a second order observation of war as a conflict system – to be distinct from a military organisational system. This, I do by beginning with a reconceptualization of Carl von Clausewitz’ form analysis and self-description of war from Vom Kriege (1832. The central point is to observe the self-reference of war, or how war became war about war. Conflict is basically a problem of essentially contested communication. Once this historical self-reference established around the 17th century was in place, war became delimited by its structural couplings to religion, mass media (propaganda, finance, welfare for victims and veterans, law, politics and other functional systems. The costs of war increased, reconstituted and transformed modern society in a way that has formed a range of risks and – of course – neglected blind spots.

  17. Energy Efficiency of Refrigeration Systems

    OpenAIRE

    Arnemann, Michael

    2012-01-01

    Energy efficiency plays an important role in the development and operation of refrigeration systems. The method of the VDMA 24247-2 2 “Energy efficiency of refrigeration systems – Requirements for the system design and the components” were recently published. The method will be described within this paper, with the focus on the graphical interpretation.

  18. System for controlling a hybrid energy system

    Science.gov (United States)

    Hoff, Brian D.; Akasam, Sivaprasad

    2013-01-29

    A method includes identifying a first operating sequence of a repeated operation of at least one non-traction load. The method also includes determining first and second parameters respectively indicative of a requested energy and output energy of the at least one non-traction load and comparing the determined first and second parameters at a plurality of time increments of the first operating sequence. The method also includes determining a third parameter of the hybrid energy system indicative of energy regenerated from the at least one non-traction load and monitoring the third parameter at the plurality of time increments of the first operating sequence. The method also includes determining at least one of an energy deficiency or an energy surplus associated with the non-traction load of the hybrid energy system and selectively adjusting energy stored within the storage device during at least a portion of a second operating sequence.

  19. [Connecting the Baltic area : the Swedish postal System in the seventeenth century] / Kaarel Vanamölder

    Index Scriptorium Estoniae

    Vanamölder, Kaarel, 1981-

    2011-01-01

    Arvustus: Connecting the Baltic area : the Swedish postal System in the seventeenth century. Ed. by Heiko Droste. Södertörn Studies in History, 9, Södertörn Academic Studies, 42 (Huddinge: Södertörns högskola, 2011)

  20. Observed and model simulated 20th century Arctic temperature variability: Canadian Earth System Model CanESM2

    Science.gov (United States)

    Chylek, P.; Li, J.; Dubey, M. K.; Wang, M.; Lesins, G.

    2011-08-01

    We present simulations of the 20th century Arctic temperature anomaly from the second generation Canadian Earth System Model (CanESM2). The new model couples together an atmosphere-ocean general circulation model, a land-vegetation model and terrestrial and oceanic interactive carbon cycle. It simulates well the observed 20th century Arctic temperature variability that includes the early and late 20th century warming periods and the intervening 1940-1970 period of substantial cooling. The addition of the land-vegetation model and the terrestrial and oceanic interactive carbon cycle to the coupled atmosphere-ocean model improves the agreement with observations from 1900-1970, however, it increases the overestimate of the post 1970 warming. In contrast the older generation coupled atmosphere-ocean general circulation models Canadian CanCM3 and NCAR/LANL CCSM3, used in the IPCC 2007 climate change assessment report, overestimate the rate of the 20th century Arctic warming by factor of two to three and they are unable to reproduce the observed 20th century Arctic climate variability.

  1. Observed and model simulated 20th century Arctic temperature variability: Canadian Earth System Model CanESM2

    Directory of Open Access Journals (Sweden)

    P. Chylek

    2011-08-01

    Full Text Available We present simulations of the 20th century Arctic temperature anomaly from the second generation Canadian Earth System Model (CanESM2. The new model couples together an atmosphere-ocean general circulation model, a land-vegetation model and terrestrial and oceanic interactive carbon cycle. It simulates well the observed 20th century Arctic temperature variability that includes the early and late 20th century warming periods and the intervening 1940–1970 period of substantial cooling. The addition of the land-vegetation model and the terrestrial and oceanic interactive carbon cycle to the coupled atmosphere-ocean model improves the agreement with observations from 1900–1970, however, it increases the overestimate of the post 1970 warming. In contrast the older generation coupled atmosphere-ocean general circulation models Canadian CanCM3 and NCAR/LANL CCSM3, used in the IPCC 2007 climate change assessment report, overestimate the rate of the 20th century Arctic warming by factor of two to three and they are unable to reproduce the observed 20th century Arctic climate variability.

  2. Chapter 9: understanding the nervous system in the 18th century.

    Science.gov (United States)

    Smith, Christopher U M

    2010-01-01

    The 18th century was an age of transition. The time-honored neuropsychology of classical and medieval times, mechanized in Descartes' hydraulic neurophysiology, was undermined by microscopical observations and careful physiological experimentation. Yet it was not until the very end of the century, when work on electric fish and amphibia began to suggest an acceptable successor to "animal spirit," that the old understanding of human neurophysiology began to fade. This chapter traces this slow retreat from the iatrophysics of the early part of the century, with its hollow nerves and animal spirits, through a number of stop-gap explanations involving mysterious subtle fluids or forces described variously as irritability, élan vital, vis viva, vis insita, the spirit of animation etc., or perhaps involving vibrations and vibratiuncles and mysterious magnetic effluvia, to the dawning electrophysiology of the end of the century and the beginning of the next. This developing understanding filtered slowly through to affect medical education, and the 18th century saw the development of strong medical schools at Leiden, Edinburgh, Paris, Bologna and London. Associated with these developments there was a great increase, as a well-known physician looking back at the beginning of the following century noted, in a class of diseases that had little concerned physicians in the preceding century - "nervous disorders." PMID:19892112

  3. Remarks made by Vice Premier Mr. Zhang Dejiang at the opening ceremony of the International Ministerial Conference on Nuclear Energy in the 21st Century

    International Nuclear Information System (INIS)

    Nuclear science and technology is one of the greatest scientific and technological achievements of mankind in the 20th century. Nuclear science and technology is widely applied in various sectors with over 50 years of development, such as energy, industry, agriculture, health, and environment protection, and is playing an important role in prospering economy, improving people's livelihood, and promoting sustainable development. With global economic development and rising energy consumption, supply of traditional energy source is becoming more stretched and climate change is becoming an increasingly severe challenge. It is a common task of the international community to develop and utilize clean and renewable energy sources and properly address growing contradiction among economic development, energy development and environment protection. Given its advantage as clean, safe and could be applied in large scale, more and more countries are placing importance on nuclear energy. Accelerating peaceful uses of nuclear energy is the common wishes and inevitable choice of many countries. China started the development of nuclear energy in the early 1950s, and with the efforts of over half a century, China has established a relatively complete nuclear industry system. The installed capacity of nuclear power reached 9100 MWe, and nuclear power generation accounts for 2% of the national total electricity generated. Nuclear energy is playing an incremental role for China's economic development. However, nuclear energy utilization is rather insufficient in China, its development level is behind countries which are advanced in nuclear energy use such as the United States and France, the rate of nuclear power generation in the total electricity generated still falls behind the world average level. China's energy supply mix is featured by coal dominant and low proportion of clean energy. To achieve sustainable energy and socio-economic development, China has formulated the energy

  4. EUROPEAN PENSION SYSTEMS - THE REAL CHALLENGE OF THE 21ST CENTURY

    Directory of Open Access Journals (Sweden)

    Maria Augusztinovics

    2003-07-01

    Full Text Available It will be argued that the present focus of the pension reform debate - public, pay-as-you-go versus private, funded - is misplaced and somewhat outdated. Pay-as-you-go versus funding or pre-funding is a more-or-less technical issue. The public versus private choice should be seen as a cost-benefit, efficiency problem. These two dichotomies represent important, but secondary problems. (They cannot even be expected to help solving the certainly serious - although not that catastrophic as often painted - problems caused by the foreseeable demographic changes, the so-called ageing of the population. The major distinctive attribute of existing European pension schemes is not the mode of financing or management. It is the Bismarckian heritage, the close link to employment, based on the typically 20th century-type, continuous working career. A presently emerging trend, however, is the transformation of the labour market. The so-called "atypical" forms of employment (part-time work, outsourcing, work at home, fixed-length contracts, etc. are spreading and the traditional employer-employee link is weakening, if not - at least partially - disappearing. Activity ratios (poorly represented by the unemployment rate are declining. This trend will probably be accentuated by the deepening of globalization and European integration, the growing importance of migration, including temporary migration (i.e. working in one country for a few years, then in another one, then maybe returning home for retirement. The questions thus arise: how, when, where will people, who are economically "inactive" or wandering around during a large faction of their earning span, acquire pension eligibility, sufficient for income security in old age? Will the present forms of pension insurance (including social security as well as country-based private funds be able to live up to this 21st century-type of challenge? If not, what are the adequate models for the future and what are the

  5. Onsite Distributed Generation Systems For Laboratories, Laboratories for the 21st Century: Best Practices (Brochure)

    Energy Technology Data Exchange (ETDEWEB)

    2011-09-01

    This guide provides general information on implementing onsite distributed generation systems in laboratory environments. Specific technology applications, general performance information, and cost data are provided to educate and encourage laboratory energy managers to consider onsite power generation or combined heat and power (CHP) systems for their facilities. After conducting an initial screening, energy managers are encouraged to conduct a detailed feasibility study with actual cost and performance data for technologies that look promising. Onsite distributed generation systems are small, modular, decentralized, grid-connected, or off-grid energy systems. These systems are located at or near the place where the energy is used. These systems are also known as distributed energy or distributed power systems. DG technologies are generally considered those that produce less than 20 megawatts (MW) of power. A number of technologies can be applied as effective onsite DG systems, including: (1) Diesel, natural gas, and dual-fuel reciprocating engines; (2) Combustion turbines and steam turbines; (3) Fuel cells; (4) Biomass heating; (5) Biomass combined heat and power; (6) Photovoltaics; and (7) Wind turbines. These systems can provide a number of potential benefits to an individual laboratory facility or campus, including: (1) High-quality, reliable, and potentially dispatchable power; (2) Low-cost energy and long-term utility cost assurance, especially where electricity and/or fuel costs are high; (3) Significantly reduced greenhouse gas (GHG) emissions. Typical CHP plants reduce onsite GHG by 40 to 60 percent; (4) Peak demand shaving where demand costs are high; (5) CHP where thermal energy can be used in addition to electricity; (6) The ability to meet standby power needs, especially where utility-supplied power is interrupted frequently or for long periods and where standby power is required for safety or emergencies; and (7) Use for standalone or off

  6. Aquatic Ecosystem Services in the 21st Century Northeast Corridor: Assessment Using a Regional Earth System Model

    Science.gov (United States)

    Rosenzweig, B.; Miara, A.; Stewart, R. J.; Wollheim, W. M.; Vorosmarty, C. J.

    2012-12-01

    Aquatic ecosystems of the Northeast United States will be significantly impacted by both global climate change and the regional-scale strategic management decisions made in the next few years. We have developed a Regional Earth System Model for the Northeast Corridor (NE-RESM) that simulates the impacts of climate, land use, and development policy on the interacting cycles of energy, water, carbon and nutrients. The NE-RESM will provide a unique and critically needed tool for policymakers to understand how their current decisions will impact ecosystem services over the 21st Century. To test our modeling framework, we conducted a retrospective experiment focusing on the water-energy-economy nexus during the period 2000-2010. Component models were developed to 'translate' physical outputs from the NE-RESM - such as stream discharge and water temperature - into ecosystem services including water regulation for thermoelectric cooling and the ability for streams to serve as a refugia for wildlife. Simulations were performed both with and without Clean Water Act limits on thermal pollution. Through this work, we were able to obtain spatially distributed information on how these laws impact power generation by the thermoelectric sector but also enable Northeast streams to serve as habitat for temperature-sensitive aquatic species (Brook Trout, Atlantic Salmon, River Herring and the American Eel). Our ongoing research examines future climate and policy scenarios through 2100. We are considering the impact of changing land cover patterns (a return to agriculture vs. suburban sprawl) and various strategies to meet energy and municipal water needs under different Representative Concentration Pathways (RCPs) developed for the Intergovernmental Panel on Climate Change's Fifth Assessment Report (IPCC AR5).

  7. Terrestrial Energy Storage SPS Systems

    Science.gov (United States)

    Brandhorst, Henry W., Jr.

    1998-01-01

    Terrestrial energy storage systems for the SSP system were evaluated that could maintain the 1.2 GW power level during periods of brief outages from the solar powered satellite (SPS). Short-term outages of ten minutes and long-term outages up to four hours have been identified as "typical" cases where the ground-based energy storage system would be required to supply power to the grid. These brief interruptions in transmission could result from performing maintenance on the solar power satellite or from safety considerations necessitating the power beam be turned off. For example, one situation would be to allow for the safe passage of airplanes through the space occupied by the beam. Under these conditions, the energy storage system needs to be capable of storing 200 MW-hrs and 4.8 GW-hrs, respectively. The types of energy storage systems to be considered include compressed air energy storage, inertial energy storage, electrochemical energy storage, superconducting magnetic energy storage, and pumped hydro energy storage. For each of these technologies, the state-of-the-art in terms of energy and power densities were identified as well as the potential for scaling to the size systems required by the SSP system. Other issues addressed included the performance, life expectancy, cost, and necessary infrastructure and site locations for the various storage technologies.

  8. Ministerial Presentation: Republic of Korea [International Ministerial Conference on Nuclear Energy in the 21. Century: Addressing Energy Needs and Environmental Challenges, Beijing (China), 20-22 April 2009

    International Nuclear Information System (INIS)

    I would first like to extend my sincere appreciation and gratitude for allowing me to speak in this forum where the most influential decision-makers of the energy policy and the experts in nuclear power have gathered together to discuss the important energy issues facing us today. This forum is indeed crucial, and should be held on a continuing basis if we are to solve the colossal challenges we face in energy, as represented by the depletion of fossil fuel energy and the climate change. I sincerely hope that this forum will take a serious look at the future role of nuclear power as the global energy source, and provide a basis for a meaningful discussion on issues related to energy on a global scale. Due to the recent fluctuation in oil prices and issues related to climate change, the world is paying a renewed attention to nuclear energy that is not only a stable source of energy but produces less greenhouse gas. The Korean government announced the national agenda, so-called ''Low-carbon, Green-growth'' to join the global efforts to tackle climate change. The Korean government recognizes the importance of nuclear power technology in achieving the Low-carbon Green-growth strategy and strongly supports its research and development activities. As part of our effort for this, Korea will lower the national dependency rate on fossil fuels such as oil and gas, while significantly increasing the share of nuclear energy and renewable energy. It has been half a century since nuclear power was first introduced to Korea. So far, the Korean government has heavily invested in research and development of nuclear energy, believing in the unlimited possibility of nuclear power. As a result, Korea started the commercial operation of Gori No. 1 nuclear power plant in 1978 which has grown to 20 nuclear power plants to this day. Today, Korea ranks 6th in the world in nuclear energy development. Korea has gone through continuous innovation in nuclear energy technology during the past

  9. THE SYSTEM OF NAVAL EDUCATION IN KAISER GERMANY IN LATE 19th - EARLY 20th CENTURIES

    Directory of Open Access Journals (Sweden)

    Stanislav Nikolaevich Sinegubov

    2015-01-01

    Full Text Available The article gives a brief description of the system of naval education in Imperial Germany, which was formed in the late 19th century, highlights its advantages enhancing the high level of training specialists for the new fleet which was constructed in the country. The emphasis is on the process of staffing the non-commissioned officers’ corps on the basis of the sea cadets’ school. There was a great need for this educational institution to develop the Navy of the II Reich. The authorities encouraged a big annual enrollment of sea cadets introducing a wide range of social benefits, such as: free-of-charge education, full governmental support during the period of studies, good professional training that would guarantee not only job on a warship, but also career growth in future. Another important attractive aspect was that students were constantly under the control of officers who raised their wards in traditional moral values. All this attracted to naval schools young people, particularly from socially vulnerable strata of German society. The article considers special features of training and educating future officers at the Naval College and the Naval Academy in Kiel, which already had the elite character.

  10. Modeling the 20th century Arctic Ocean/Sea ice system: Reconstruction of surface forcing

    Science.gov (United States)

    Kauker, Frank; KöBerle, Cornelia; Gerdes, Rüdiger; Karcher, Michael

    2008-09-01

    The ability to simulate the past variability of the sea ice-ocean system is of fundamental interest for the identification of key processes and the evaluation of scenarios of future developments. To achieve this goal atmospheric surface fields are reconstructed by statistical means for the period 1900 to 1997 and applied to a coupled sea ice-ocean model of the North Atlantic/Arctic Ocean. We devised a statistical model using a redundancy analysis to reconstruct the atmospheric fields. Several sets of predictor and predictand fields are used for reconstructions on different time scales. The predictor fields are instrumental records available as gridded or station data sets of sea level pressure and surface air temperature. The predictands are surface fields from the NCAR/NCEP reanalysis. Spatial patterns are selected by maximizing predictand variance during a "learning" period. The reliability of these patterns is tested in a validation period. The ensemble of reconstructions is checked for robustness by mutual comparison and an "optimal" reconstruction is selected. Results of the simulations with the sea ice-ocean model are compared with historical sea ice extent observations for the Arctic and Nordic Seas. The results obtained with the "optimal" reconstruction are shown to be highly consistent with these historical data. An analysis of simulated trends of the "early 20th century warming" and the recent warming in the Arctic complete the manuscript.

  11. Industrialization and Development Strategies in the 21st Century: Towards Sustainable Innovation Systems

    OpenAIRE

    Khan, Haider

    2013-01-01

    The main purpose of this paper is to explore the possibilities of industrialization and development in the 21st century. With an ongoing global financial and economic crisis with only a tepid recovery at the time of this writing(August 2013) as well as the still unfolding ecological crisis, the 21st century presents an even greater challenge for industrialization in the developing world than the post-WWII period. The changed global economic and ecological environment will shape the emergence ...

  12. CLARREO shortwave observing system simulation experiments of the twenty-first century: Simulator design and implementation

    Energy Technology Data Exchange (ETDEWEB)

    Feldman, D.R.; Algieri, C.A.; Ong, J.R.; Collins, W.D.

    2011-04-01

    Projected changes in the Earth system will likely be manifested in changes in reflected solar radiation. This paper introduces an operational Observational System Simulation Experiment (OSSE) to calculate the signals of future climate forcings and feedbacks in top-of-atmosphere reflectance spectra. The OSSE combines simulations from the Intergovernmental Panel on Climate Change (IPCC) Fourth Assessment Report for the NCAR Community Climate System Model (CCSM) with the MODTRAN radiative transfer code to calculate reflectance spectra for simulations of current and future climatic conditions over the 21st century. The OSSE produces narrowband reflectances and broadband fluxes, the latter of which have been extensively validated against archived CCSM results. The shortwave reflectance spectra contain atmospheric features including signals from water vapor, liquid and ice clouds, and aerosols. The spectra are also strongly influenced by the surface bidirectional reflectance properties of predicted snow and sea ice and the climatological seasonal cycles of vegetation. By comparing and contrasting simulated reflectance spectra based on emissions scenarios with increasing projected and fixed present-day greenhouse gas and aerosol concentrations, we find that prescribed forcings from increases in anthropogenic sulfate and carbonaceous aerosols are detectable and are spatially confined to lower latitudes. Also, changes in the intertropical convergence zone and poleward shifts in the subsidence zones and the storm tracks are all detectable along with large changes in snow cover and sea ice fraction. These findings suggest that the proposed NASA Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission to measure shortwave reflectance spectra may help elucidate climate forcings, responses, and feedbacks.

  13. Proceedings: Twenty years of energy policy: Looking toward the twenty-first century

    Energy Technology Data Exchange (ETDEWEB)

    1992-12-31

    In 1973, immediately following the Arab Oil Embargo, the Energy Resources Center, University of Illinois at Chicago initiated an innovative annual public service program called the Illinois Energy Conference. The objective was to provide a public forum each year to address an energy or environmental issue critical to the state, region and nation. Twenty years have passed since that inaugural program, and during that period we have covered a broad spectrum of issues including energy conservation nuclear power, Illinois coal, energy policy options, natural gas, alternative fuels, new energy technologies, utility deregulation and the National Energy Strategy.

  14. Proceedings: Twenty years of energy policy: Looking toward the twenty-first century

    International Nuclear Information System (INIS)

    In 1973, immediately following the Arab Oil Embargo, the Energy Resources Center, University of Illinois at Chicago initiated an innovative annual public service program called the Illinois Energy Conference. The objective was to provide a public forum each year to address an energy or environmental issue critical to the state, region and nation. Twenty years have passed since that inaugural program, and during that period we have covered a broad spectrum of issues including energy conservation nuclear power, Illinois coal, energy policy options, natural gas, alternative fuels, new energy technologies, utility deregulation and the National Energy Strategy

  15. Energy management systems in buildings

    Energy Technology Data Exchange (ETDEWEB)

    Lush, D.M.

    1979-07-01

    An investigation is made of the range of possibilities available from three types of systems (automatic control devices, building envelope, and the occupants) in buildings. The following subjects are discussed: general (buildings, design and personnel); new buildings (envelope, designers, energy and load calculations, plant design, general design parameters); existing buildings (conservation measures, general energy management, air conditioned buildings, industrial buildings); man and motivation (general, energy management and documentation, maintenance, motivation); automatic energy management systems (thermostatic controls, optimized plant start up, air conditioned and industrial buildings, building automatic systems). (MCW)

  16. Sustainable Energy Systems and Applications

    CERN Document Server

    Dinçer, İbrahim

    2012-01-01

    Sustainable Energy Systems and Applications presents analyses of sustainable energy systems and their applications, providing new understandings, methodologies, models and applications along with descriptions of several illustrative examples and case studies. This textbook aims to address key pillars in the field, such as: better efficiency, cost effectiveness, use of energy resources, environment, energy security, and sustainable development. It also includes some cutting-edge topics, such as hydrogen and fuel cells, renewable, clean combustion technologies, CO2 abatement technologies, and some potential tools for design, analysis and performance improvement. The book also: Discusses producing energy by increasing systems efficiency in generation, conversion, transportation and consumption Analyzes the conversion of fossil fuels to clean fuels for limiting  pollution and creating a better environment Sustainable Energy Systems and Applications is a research-based textbook which can be used by senior u...

  17. THE STATE-POLITICAL SYSTEM OF THE FEUDAL STRUCTURES OF DAGESTAN IN THE MIDDLE XVIII - EARLY XIX CENTURY

    OpenAIRE

    Albina Umalatovna RABADANOVA

    2015-01-01

    The article highlights the public-political system of feudal structures in Dagestan in the middle XVIII-early XIX century, analyzes the political structures, reveals specific features of their administration. All political structures of Dagestan differed from each other in their territory, location in a certain part of the region, power structure, number of villages, internal and external borders, ethnic composition of the population, different spheres of economy, position in the system of po...

  18. Two energy system analysis - cases

    DEFF Research Database (Denmark)

    Lund, Henrik; Antonoff, Jayson; Andersen, Anders N.

    2004-01-01

    The chapter presents tow cases of energy system analysis, illustrating the types of tools and methodologies presently being used for these studies in Denamrk and elsewhere.......The chapter presents tow cases of energy system analysis, illustrating the types of tools and methodologies presently being used for these studies in Denamrk and elsewhere....

  19. Communication to the Academy of Technologies: Energy prospective for the 21. century

    International Nuclear Information System (INIS)

    After a presentation of the problematic and challenging context (increasing energy demand, fossil resource depletion, pollution and environment protection), this report proposes a prospective overview of the possible, unavoidable or required evolutions for fossil energy consumption and resources (coal, oil, natural gas, struggle against CO2 emissions), for energy savings (in dwellings and transports), for renewable energies, for the nuclear energy (fears and scenarios). Then, the authors try to make a synthesis of this energy prospective by defining an ideal energy, identifying the impact of the different energy sources on public health, and the risks and assets of the different energy sources. They analyse the attitudes and trends which can be observed in different countries, and describe the context created by international agreements and negotiations. Finally, they discuss the development of tools and researches for prospective studies. Extended information is also presented in appendices on these different issues

  20. Fusion in the energy system

    DEFF Research Database (Denmark)

    Fusion energy is the fundamental energy source of the Universe, as the energy of the Sun and the stars are produced by fusion of e.g. hydrogen to helium. Fusion energy research is a strongly international endeavor aiming at realizing fusion energy production in power plants on Earth. Reaching...... this goal, mankind will have a sustainable base load energy source with abundant resources, having no CO2 release, and with no longlived radioactive waste. This presentation will describe the basics of fusion energy production and the status and future prospects of the research. Considerations...... of integration into the future electricity system and socio-economic studies of fusion energy will be presented, referring to the programme of Socio-Economic Research on Fusion (SERF) under the European Fusion Energy Agreement (EFDA)....

  1. Numerical data for energy systems

    International Nuclear Information System (INIS)

    Two viewpoints are introduced in this symposium 'Numerical Data for Energy Systems' to make the role of numerical data clear; (i) Phase of development of energy systems and (ii) Evaluation of energy systems. Technologies are generally established through four phases of physical feasibility, engineering feasibility, economic feasibility and social feasibility, where numerical data play a role in maturing each phase and movement to the next phase so as to reach a more reliable, safe, efficient, useful and acceptable state of energy supply. Various energy sources have been and will be used such as wood, coal, oil, sunlight, wind, sea, earth, fuel cell, battery, fission and fusion, and many critical issues reveal themselves through the process of evaluation of those energy sources. Four topics are selected for discussion. (orig.)

  2. Battery energy storage system

    NARCIS (Netherlands)

    Tol, C.S.P.; Evenblij, B.H.

    2009-01-01

    The ability to store electrical energy adds several interesting features to a ships distribution network, as silent power, peak shaving and a ride through in case of generator failure. Modern intrinsically safe Li-ion batteries bring these within reach. For this modern lithium battery applications t

  3. Solar Energy Systems

    Science.gov (United States)

    1981-01-01

    A waste water treatment plant in Wilton, Maine, where sludge is converted to methane gas, and Monsanto Company's Environmental Health Laboratory in St. Louis Missouri, where more than 200 solar collectors provide preheating of boiler feed water for laboratory use are representative of Grumman's Sunstream line of solar energy equipment. This equipment was developed with technology from NASA's Apollo lunar module program.

  4. Strategic environments (SWOT) for nuclear energy innovation in the 21. century

    International Nuclear Information System (INIS)

    In prospecting the role of nuclear energy in a future society, it is necessary to foresee the social attitudes towards energy, economy and environment, and to analyze their interactions with the exploitation of nuclear energy itself. As those issues, this article looks upon the change of the socio-economic environment, the concerns about nuclear power and eco-environment, and the sustainability and limits of the energy resources, etc. With this perception, the so-called SWOT analysis is employed to identify the internal strengths (S) and/or weaknesses (W) of nuclear energy compared with other energy competitors on the basis of the evaluation of the external factors which are likely to play the roles of opportunities (O) for and/or threats (T) against the technological change in nuclear energy. (authors)

  5. Energy systems transformation

    OpenAIRE

    Dangerman, A.T.C.J.; Schellnhuber, H. J.

    2013-01-01

    The contemporary industrial metabolism is not sustainable. Critical problems arise at both the input and the output side of the complex: Although affordable fossil fuels and mineral resources are declining, the waste products of the current production and consumption schemes (especially CO2 emissions, particulate air pollution, and radioactive residual) cause increasing environmental and social costs. Most challenges are associated with the incumbent energy economy that is unlikely to subsi...

  6. Renewable Energy Devices and Systems

    DEFF Research Database (Denmark)

    Blaabjerg, Frede; Ionel, Dan M.

    2015-01-01

    and commercial applications are provided. Fuel cells, solar thermal, wave generators, and energy storage systems are also briefly presented and illustrated. Challenges and future trends for 2025 are summarized in a table for on-shore and off-shore wind energy, solar power, including photovoltaic and......In this paper, essential statistics demonstrating the increasing role of renewable energy generation are firstly discussed. A state of the art review section covers fundamentals of wind turbines and PV systems. Included are schematic diagrams illustrating the main components and system topologies...... and the fundamental and increasing role of power electronics as an enabler for renewable energy integration, and for the future power system and smart grid. Recent examples of research and development, including new devices and system installations for utility power plants, as well for as residential...

  7. Energy Systems and Population Health

    OpenAIRE

    Ezzati, Majid; Bailis, Rob; Kammen, Daniel M.; Holloway, Tracey; Price, Lynn; Cifuentes, Luis A; Barnes, Brendon; Chaurey, Akanksha; Dhanapala, Kiran N.

    2004-01-01

    It is well-documented that energy and energy systems have a central role in social and economic development and human welfare at all scales, from household and community to regional and national (41). Among its various welfare effects, energy is closely linked with people s health. Some of the effects of energy on health and welfare are direct. With abundant energy, more food or more frequent meals can be prepared; food can be refrigerated, increasing the types of food items that are con...

  8. Evaluating the presence of titanium in XIX-century Brazilian steels by energy-dispersive X-ray fluorescence

    International Nuclear Information System (INIS)

    Ores, pig iron and steel pieces from the XIX Century ironworks Royal St. John of Ipanema Iron Foundry (Real Fábrica de Ferro São João do Ipanema), in Iperó, Brazil, were analyzed by Energy-Dispersive X-Ray Fluorescence (EDXRF) spectroscopy, with the aim of investigating the presence of deleterious elements as Ti and P in the minerals and in the resulting products. Analytical modifications made in order to improve the detection limits for Ti and P are discussed. Both elements were found in the raw material and in the products, but large differences in chemical composition were found in different samples or regions of samples. - Highlights: • Ores and products from the XIX Century Ipanema Ironworks were analyzed by EDXRF. • Ti and P detection improved by the use of Cr-tube instead of W-tube. • Detection improved by using detector with multilayer, instead of Zr, collimator. • High Ti and P contents were found in ores and products from Ipanema. • Ipanema ores were found to be very heterogeneous

  9. Principles of sustainable energy systems

    CERN Document Server

    Kreith, Frank

    2013-01-01

    … ""This is an ideal book for seniors and graduate students interested in learning about the sustainable energy field and its penetration. The authors provide very strong discussion on cost-benefit analysis and ROI calculations for various alternate energy systems in current use. This is a descriptive book with detailed case-based analyses of various systems and engineering applications. The text book provides real-world case studies and related problems pertaining to sustainable energy systems.""--Dr. Kuruvilla John, University of North Texas""The new edition of ""Principles of Sustainable En

  10. Energy and the food system.

    Science.gov (United States)

    Woods, Jeremy; Williams, Adrian; Hughes, John K; Black, Mairi; Murphy, Richard

    2010-09-27

    Modern agriculture is heavily dependent on fossil resources. Both direct energy use for crop management and indirect energy use for fertilizers, pesticides and machinery production have contributed to the major increases in food production seen since the 1960s. However, the relationship between energy inputs and yields is not linear. Low-energy inputs can lead to lower yields and perversely to higher energy demands per tonne of harvested product. At the other extreme, increasing energy inputs can lead to ever-smaller yield gains. Although fossil fuels remain the dominant source of energy for agriculture, the mix of fuels used differs owing to the different fertilization and cultivation requirements of individual crops. Nitrogen fertilizer production uses large amounts of natural gas and some coal, and can account for more than 50 per cent of total energy use in commercial agriculture. Oil accounts for between 30 and 75 per cent of energy inputs of UK agriculture, depending on the cropping system. While agriculture remains dependent on fossil sources of energy, food prices will couple to fossil energy prices and food production will remain a significant contributor to anthropogenic greenhouse gas emissions. Technological developments, changes in crop management, and renewable energy will all play important roles in increasing the energy efficiency of agriculture and reducing its reliance of fossil resources. PMID:20713398

  11. Evidence of active tectonics on a Roman aqueduct system (II–III century A.D.) near Rome, Italy

    OpenAIRE

    Marra, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia; Montone, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia; Pirro, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia; Boschi, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione AC, Roma, Italia

    2004-01-01

    In this paper we describe evidence of strong tectonic deformation affecting two aqueducts of Roman age (II–III century A.D.). The channels are located approximately 20 km northeast of Rome along the ancient Via Tiburtina. Brittle and ductile deformation affects these two structures, including extensional joint systems, NE-oriented faults, and horizontal distortion. This deformation is consistent with rightlateral movement on major N-striking faults, and represents the first evidence ...

  12. Magnetic materials and devices for the 21st century: stronger, lighter, and more energy efficient.

    Science.gov (United States)

    Gutfleisch, Oliver; Willard, Matthew A; Brück, Ekkes; Chen, Christina H; Sankar, S G; Liu, J Ping

    2011-02-15

    A new energy paradigm, consisting of greater reliance on renewable energy sources and increased concern for energy efficiency in the total energy lifecycle, has accelerated research into energy-related technologies. Due to their ubiquity, magnetic materials play an important role in improving the efficiency and performance of devices in electric power generation, conditioning, conversion, transportation, and other energy-use sectors of the economy. This review focuses on the state-of-the-art hard and soft magnets and magnetocaloric materials, with an emphasis on their optimization for energy applications. Specifically, the impact of hard magnets on electric motor and transportation technologies, of soft magnetic materials on electricity generation and conversion technologies, and of magnetocaloric materials for refrigeration technologies, are discussed. The synthesis, characterization, and property evaluation of the materials, with an emphasis on structure-property relationships, are discussed in the context of their respective markets, as well as their potential impact on energy efficiency. Finally, considering future bottlenecks in raw materials, options for the recycling of rare-earth intermetallics for hard magnets will be discussed. PMID:21294168

  13. Was the nineteenth century giant eruption of Eta Carinae a merger event in a triple system?

    NARCIS (Netherlands)

    S.F. Portegies Zwart; E.P.J. van den Heuvel

    2016-01-01

    We discuss the events that led to the giant eruption of Eta Carinae, and find that the mid-nineteenth century (in 1838-1843) giant mass-loss outburst has the characteristics of being produced by the merger event of a massive close binary, triggered by the gravitational interaction with a massive thi

  14. Whole System Integration and Modeling Essential to Agricultural Science and Technology for the 21st Century

    Science.gov (United States)

    In the 21st century, agricultural research has more difficult and complex problems to solve. The continued increase in population in the developing countries requires continued increases in agricultural production. However, the increased use of fertilizers, pesticides, and water required for the new...

  15. Nuclear energy technology innovation and restructuring electric power industry for sustainable development in Korea in 21st century - issues and strategies

    International Nuclear Information System (INIS)

    After TMI and Chernobyl accidents, concerns on nuclear safety and radiation health risk from radioactive wastes become the target issues for anti-nuclear. Nevertheless, nuclear power is a substantial contributor to the world electricity production, supplying more than 16 % of global electricity. The objectives of Korean nuclear energy technology innovation are to improve safety, economic competitiveness, energy security and the effectiveness of radioactive waste management in harmony with environment. Meeting such objectives, public concerns on safety and health risks would be cleared. Innovative nuclear energy system will certainly enhance socio-political acceptance and enable wider application of nuclear energy for sustainable development in Korea in the 21st Century. In parallel to such technology innovations, the effective first phase restructuring of electric power industry is in progress to enhance management efficiency and customer services. The power generation division of the former state-run utility, Korea Electric Power Corporation (KEPCO) was separated and divided into six companies - five thermal power and one hydro and nuclear power generation companies - in last April. After the reorganization of KEPCO and the break-up of monopoly, the new electric power industry will be driven by market force. (author)

  16. The influence of environment and energy macro surroundings on the development of tourism in the 21st century.

    Science.gov (United States)

    Jovicić, Dobrica

    2012-06-01

    Trying to anticipate the future of tourism may be a particularly fraught task. However, this does not mean that trying to predict the future of tourism is not without value. From a business perspective, examining the future enables firms to anticipate new business conditions and develop new strategies. From a destination perspective, reflections on the future enable consideration of how to maintain or improve the qualities of a destination. The paper is focused on an analysis of the impacts of the energy and ecological macro environments on tourism trends in 21st century. Mass international tourism has thrived on the abundant and cheap supply of energy, and this may be about to change as the world moves towards 'Peak Oil'. The resultant scarcity and high price of all energy fuels will produce changes in human activities, specifically in tourism. The basis of the health of the economy is the health of the environment. Therefore issues of global environmental changes are increasingly influencing consideration of trends in tourism. In this looming transitional era tourism needs to make some dramatic changes to harmonize with the new realities of a post-energy world affected additionaly by global warming and other environmental changes. PMID:22856267

  17. Global energy prospects in the 21st century: a battery-based society

    Science.gov (United States)

    Yoda, Susumu; Ishihara, Kaoru

    Current energy needs are nearly totally dependent on fossil fuels. This is causing global warming and exhaustion of resources; it is important to switch to more efficient and effective energy use. These circumstances are expanding the role of secondary batteries. Non-fossil fuels such as photovoltaic cells and wind energy are unstable, but combining them with secondary batteries improves their stability as electric power sources. If electrical load leveling between day and night can be achieved by storing electric power, it will be possible to achieve a high capacity utilization rate for generating facilities that have high generating efficiency and produce little CO 2. Depending on the generating mix, the practicalization of electric vehicles will serve not only to alleviate air pollution, but also to limit CO 2 emissions. There are hopes for the development of large-capacity lithium secondary batteries with long cycle life, high energy density, high power density, and high energy efficiency.

  18. An international education agenda in nuclear energy and radioactive waste management for the 21st century

    International Nuclear Information System (INIS)

    As many countries have turned to scientific and technological advancements for human well being and national security, there has emerged a pressing need to promote scientific and technological literacy in national work forces. One benefit of this literacy is scientifically informed decision making on issues related to energy conservation in general and nuclear energy in particular. Realizing the need for increased literacy relative to nuclear energy, the Office of Civilian Radioactive Waste Management (OCRWM) of the Department of Energy, U.S.A., the Organization of Economic Co-Operation and Development (OECD) and the Nuclear Energy Agency (NEA) sponsored an international conference on education in the field of radioactive waste management. This paper discusses recommendations made at the conference for developing education materials. Also described is a three-phase international plan for developing school curriculum materials relative to nuclear waste management

  19. Introduction to Renewable Energy Systems

    DEFF Research Database (Denmark)

    Ma, Ke; Yang, Yongheng; Blaabjerg, Frede

    2014-01-01

    view. It is concluded that as the quick development of renewable energy, wind power and PV power both show great potential to be largely integrated into the power grid. Power electronics is playing essential role in both of the systems to achieve more controllable, efficient, and reliable energy...

  20. Photovoltaic Energy Conversion Systems

    DEFF Research Database (Denmark)

    Kouro, Samir; Wu, Bin; Abu-Rub, Haitham;

    2014-01-01

    This chapter presents a comprehensive overview of grid-connected PV systems, including power curves, grid-connected configurations, different converter topologies (both single- and three-phase), control schemes, MPPT, and anti-islanding detection methods. The focus of the chapter has been on the ...

  1. century drying

    Science.gov (United States)

    Cook, Benjamin I.; Smerdon, Jason E.; Seager, Richard; Coats, Sloan

    2014-11-01

    precipitation and PET changes increase the percentage of global land area projected to experience at least moderate drying (PDSI standard deviation of ≤-1) by the end of the twenty-first century from 12 to 30 %. PET induced moderate drying is even more severe in the SPEI projections (SPEI standard deviation of ≤-1; 11 to 44 %), although this is likely less meaningful because much of the PET induced drying in the SPEI occurs in the aforementioned arid regions. Integrated accounting of both the supply and demand sides of the surface moisture balance is therefore critical for characterizing the full range of projected drought risks tied to increasing greenhouse gases and associated warming of the climate system.

  2. Hydrogen energy systems studies

    Energy Technology Data Exchange (ETDEWEB)

    Ogden, J.M.; Kreutz, T.G.; Steinbugler, M. [Princeton Univ., NJ (United States)] [and others

    1996-10-01

    In this report the authors describe results from technical and economic assessments carried out during the past year with support from the USDOE Hydrogen R&D Program. (1) Assessment of technologies for small scale production of hydrogen from natural gas. Because of the cost and logistics of transporting and storing hydrogen, it may be preferable to produce hydrogen at the point of use from more readily available energy carriers such as natural gas or electricity. In this task the authors assess near term technologies for producing hydrogen from natural gas at small scale including steam reforming, partial oxidation and autothermal reforming. (2) Case study of developing a hydrogen vehicle refueling infrastructure in Southern California. Many analysts suggest that the first widespread use of hydrogen energy is likely to be in zero emission vehicles in Southern California. Several hundred thousand zero emission automobiles are projected for the Los Angeles Basin alone by 2010, if mandated levels are implemented. Assuming that hydrogen vehicles capture a significant fraction of this market, a large demand for hydrogen fuel could evolve over the next few decades. Refueling a large number of hydrogen vehicles poses significant challenges. In this task the authors assess near term options for producing and delivering gaseous hydrogen transportation fuel to users in Southern California including: (1) hydrogen produced from natural gas in a large, centralized steam reforming plant, and delivered to refueling stations via liquid hydrogen truck or small scale hydrogen gas pipeline, (2) hydrogen produced at the refueling station via small scale steam reforming of natural gas, (3) hydrogen produced via small scale electrolysis at the refueling station, and (4) hydrogen from low cost chemical industry sources (e.g. excess capacity in refineries which have recently upgraded their hydrogen production capacity, etc.).

  3. Central Asia: A major emerging energy player in the 21st century

    International Nuclear Information System (INIS)

    Energy is the most abundant and valuable natural resource of Central Asia and northwest China and includes oil, gas, coal, electricity, and renewables. Kazakhstan has large reserves of oil and coal. Turkmenistan and Uzbekistan have significant reserves of gas. Kyrgyzstan produces significant amounts of hydroelectric power. Xinjiang, China has significant coal resources and an uncertain, although generally promising, potential for oil in the Tarim basin. These energy reserves form the basis for future economic growth and development in the region, and energy exports are beginning to generate important foreign exchange revenues. Although Central Asia enjoys vast energy development potential, there are obstacles to exploiting these resources, including limited infrastructure for transporting energy-notably oil and gas pipelines and electric transmission lines-in the region, political turmoil, payment difficulties, and inadequate energy policies. Despite these challenges, however, with appropriate government planning Central Asia is poised to become a significant world supplier of energy, especially in the oil and gas sectors, and the region is likely to diminish OPEC's influence of the global oil market over the long term. (author)

  4. Energy politics and geopolitics - an analysis of the international tensions in the 21. century

    International Nuclear Information System (INIS)

    Necessary, unloved, abundant but often polluting, expensive but often wasted, energy remains the indispensable blood which irrigates the world economy, supplies the engine of economic growth, and generates together peace and conflicts. The energy questions have been first technical (resources extraction), economical (resources management) and geopolitical (resources property). Today they have become mainly political. With the development of emerging countries, the worldwide distribution of energy resources has become a worrying geopolitical issue for industrialized countries. These countries have to deal with contradictory political choices: the security of supplies on the one hand, and the sustainable development on the other hand. In this book, the author explains that despite a sustained development of renewable energy sources and an energy capacity in permanent progress, and despite a bad geographical distribution of resources, the fossil fuels still dominate the energy scene today and will do so for a long time. With some precise figures and clear explanations of geopolitical situations, the author shares with us his knowledge gained during several years of energy files management at the European Commission. (J.S.)

  5. Central Asia: A major emerging energy player in the 21st century

    International Nuclear Information System (INIS)

    Energy is the most abundant and valuable natural resource of Central Asia and northwest China and includes oil, gas, coal, electricity, and renewables. Kazakhstan has large reserves of oil and coal. Turkmenistan and Uzbekistan have significant reserves of gas. Kyrgyzstan produces significant amounts of hydroelectric power. Xinjiang, China has significant coal resources and an uncertain, although generally promising, potential for oil in the Tarim basin. These energy reserves form the basis for future economic growth and development in the region, and energy exports are beginning to generate important foreign exchange revenues. Although Central Asia enjoys vast energy development potential, there are obstacles to exploiting these resources, including limited infrastructure for transporting energy-notably oil and gas pipelines and electric transmission lines-in the region, political turmoil, payment difficulties, and inadequate energy policies. Despite these challenges, however, with appropriate government planning Central Asia is poised to become a significant world supplier of energy, especially in the oil and gas sectors, and the region is likely to diminish OPEC's influence of the global oil market over the long term

  6. Low energy electron beam processing in Europe at the end of the 20th century

    International Nuclear Information System (INIS)

    Overview of low energy electron beam processing in Europe was presented. The presentation contained the following topics: the early installations, years of growth, stagnation, status 1999 and the future of this technology

  7. The German energy industry in the 21. century dawn of a new era?

    International Nuclear Information System (INIS)

    Having crossed the threshold into the new millennium the power utilities business finds itself confronted by new challenges. In worldwide terms the uppermost objective is, while taking due account of climatic factors and of the obligations resulting from the various World Climate Conferences held so far, to ensure a sufficient and reliable supply of energy for the world's growing population. The gap between the supply of energy and the demand for energy must be closed. In European terms the situation looks a little different. The supply structure is excellent - characterized more by over-capacity than energy shortage. As a result of the liberalization process that has started, the European power utilities have undergone vital changes. Market influences on the power utilities corporations are massive. Fusions and takeovers are the order of the day. The German power business, like others in Europe, is feeling the effects of these two aspects. Also, at national level in Germany, there is the attempt to reach a new energy consensus. An agreement was reached on the 14. of June 2000 between the German federal government and the power utilities. This laid down regulations on the future operation of German nuclear power plants and the disposal of spent fuel elements - to apply up until the government's planned withdrawal from nuclear power. However, the politicians have yet to answer the question of how, in the long term, a sensibly balanced German energy mix might look. There is not as yet - nor in the foreseeable future is there likely to be - an energy consensus in Germany supported by all social and political groups. The respective approaches and ideas differ too widely. The failure, in the so-called 'Energy dialog 2000', of political parties, environmental organizations, and representatives from industry to achieve any results that might point the way forward and tell us where we are heading shows this all too clearly. (author)

  8. Control of Solar Energy Systems

    CERN Document Server

    Camacho, Eduardo F; Rubio, Francisco R; Martínez, Diego

    2012-01-01

    Control of Solar Energy Systems details the main solar energy systems, problems involved with their control, and how control systems can help in increasing their efficiency.  After a brief introduction to the fundamental concepts associated with the use of solar energy in both photovoltaic and thermal plants, specific issues related to control of solar systems are embarked upon. Thermal energy systems are then explored in depth, as well as  other solar energy applications such as solar furnaces and solar refrigeration systems. Problems of variable generation profile and of the contribution of many solar plants to the same grid system are considered with the necessary integrated and supervisory control solutions being discussed. The text includes material on: ·         A comparison of basic and advanced control methods for parabolic troughs from PID to nonlinear model-based control; ·         solar towers and solar tracking; ·         heliostat calibration, characterization and off...

  9. ENERGY MONITORING SYSTEM BERBASIS WEB

    Directory of Open Access Journals (Sweden)

    Novan Zulkarnain

    2013-11-01

    Full Text Available Government through the Ministry of Energy and Mineral Resources (ESDM encourages the energy savings at whole buildings in Indonesia. Energy Monitoring System (EMS is a web-based solution to monitor energy usage in a building. The research methods used are the analysis, prototype design and testing. EMS consists of hardware which consists of electrical sensors, temperature-humidity sensor, and a computer. Data on EMS are designed using Modbus protocol, stored in MySQL database application, and displayed on charts through Dashboard on LED TV using PHP programming.

  10. Examination of the role of nuclear deterrence in the 21st century: a systems analysis approach

    Energy Technology Data Exchange (ETDEWEB)

    Martz, Joseph C [Los Alamos National Laboratory; Stevens, Patrice A [Los Alamos National Laboratory; Branstetter, Linda [SNL; Hoover, Edward [SNL; O' Brien, Kevin [SNL; Slavin, Adam [SNL; Caswell, David [STANFORD UNIV

    2010-01-01

    Until very recently, an evaluation of US policy regarding deterrence and the role of its nuclear weapons arsenal as a deterrent has been largely absent in the public debate. With President's Obama embrace of a goal of a future world without nuclear weapons, issues of nuclear policy and deterrence have just recently risen to the forefront of policy discussions. The traditional role of US nuclear weapons-to deter the use of nuclear weapons by other states-endures, but is no longer unique nor even predominant. In an increasingly multi-polar world, the US now faces growing risks of nuclear weapons proliferation; the spread of weapons of mass destruction generally to non-state, substate and transnational actors; cyber, space, economic, environmental and resource threats along with the application of numerous other forms of 'soft power' in ways that are inimical to national security and to global stability. What concept of deterrence should the US seek to maintain in the 21st Century? That question remains fluid and central to the current debate. Recently there has been a renewed focusing of attention on the role of US nuclear weapons and a national discussion about what the underlying policy should be. In this environment, both the United States and Russia have committed to drastic reductions in their nuclear arsenals, while still maintaining forces sufficient to ensure unacceptable consequence in response to acts of aggression. Further, the declared nuclear powers have maintained that a limited nuclear arsenal continues to provide insurance against uncertain developments in a changing world. In this environment of US and Russian stockpile reductions, all declared nuclear states have reiterated the central role which nuclear weapons continue to provide for their supreme national security interests. Given this new environment and the challenges of the next several decades, how might the United States structure its policy and forces with regard to nuclear

  11. Efficiency Evaluation of Energy Systems

    CERN Document Server

    Kanoğlu, Mehmet; Dinçer, İbrahim

    2012-01-01

    Efficiency is one of the most frequently used terms in thermodynamics, and it indicates how well an energy conversion or process is accomplished. Efficiency is also one of the most frequently misused terms in thermodynamics and is often a source of misunderstanding. This is because efficiency is often used without being properly defined first. This book intends to provide a comprehensive evaluation of various efficiencies used for energy transfer and conversion systems including steady-flow energy devices (turbines, compressors, pumps, nozzles, heat exchangers, etc.), various power plants, cogeneration plants, and refrigeration systems. The book will cover first-law (energy based) and second-law (exergy based) efficiencies and provide a comprehensive understanding of their implications. It will help minimize the widespread misuse of efficiencies among students and researchers in energy field by using an intuitive and unified approach for defining efficiencies. The book will be particularly useful for a clear ...

  12. Integrated energy systems and local energy markets

    International Nuclear Information System (INIS)

    Significant benefits are connected with an increase in the flexibility of the Danish energy system. On the one hand, it is possible to benefit from trading electricity with neighbouring countries, and on the other, Denmark will be able to make better use of wind power and other types of renewable energy in the future. This paper presents the analysis of different ways of increasing flexibility in the Danish energy system by the use of local regulation mechanisms. This strategy is compared with the opposite extreme, i.e. trying to solve all balancing problems via electricity trade on the international market. The conclusion is that it is feasible for the Danish society to include the CHP plants in the balancing of fluctuating wind power. There are major advantages in equipping small CHP plants as well as the large CHP plants with heat pumps. By doing so, it will be possible to increase the share of wind power from the present 20 to 40% without causing significant problems of imbalance between electricity consumption and production. Investment in increased flexibility is in itself profitable. Furthermore, the feasibility of wind power is improved

  13. Integrated roof wind energy system

    Directory of Open Access Journals (Sweden)

    Moonen S.P.G.

    2012-10-01

    Full Text Available Wind is an attractive renewable source of energy. Recent innovations in research and design have reduced to a few alternatives with limited impact on residential construction. Cost effective solutions have been found at larger scale, but storage and delivery of energy to the actual location it is used, remain a critical issue. The Integrated Roof Wind Energy System is designed to overcome the current issues of urban and larger scale renewable energy system. The system is built up by an axial array of skewed shaped funnels that make use of the Venturi Effect to accelerate the wind flow. This inventive use of shape and geometry leads to a converging air capturing inlet to create high wind mass flow and velocity toward a vertical-axis wind turbine in the top of the roof for generation of a relatively high amount of energy. The methods used in this overview of studies include an array of tools from analytical modelling, PIV wind tunnel testing, and CFD simulation studies. The results define the main design parameters for an efficient system, and show the potential for the generation of high amounts of renewable energy with a novel and effective system suited for the built environment.

  14. Energy optimization system

    Science.gov (United States)

    Zhou, Zhi; de Bedout, Juan Manuel; Kern, John Michael; Biyik, Emrah; Chandra, Ramu Sharat

    2013-01-22

    A system for optimizing customer utility usage in a utility network of customer sites, each having one or more utility devices, where customer site is communicated between each of the customer sites and an optimization server having software for optimizing customer utility usage over one or more networks, including private and public networks. A customer site model for each of the customer sites is generated based upon the customer site information, and the customer utility usage is optimized based upon the customer site information and the customer site model. The optimization server can be hosted by an external source or within the customer site. In addition, the optimization processing can be partitioned between the customer site and an external source.

  15. The Black Sea Wave Energy: The Present State and the Twentieth century Changes

    CERN Document Server

    Galabov, Vasko

    2015-01-01

    In this paper we present a study of the present state of the Black Sea wave energy. The studies of other authors are based on the use of input data from atmospheric reanalysis or a downscaling of such reanalysis. Instead of reanalysis data, we use input data from the operational limited area numerical weather prediction model ALADIN. We showed that the estimations of the Black Sea wave energy based on reanalyses deviate significantly from the real potential. We showed also that the highest values of the mean annual wave power flux is between 4.5 and 5.0 kW/m2 and the near shore areas with the highest wave energy potential are the southernmost Bulgarian coast and the coast of Turkey north of Istanbul. While we showed that the wind data from the reanalysis are not useful for the estimation of the actual wave energy potential, we claimed that the reanalysis data is useful to study the long term changes of the wave energy of the Black Sea. We used the 10m winds from the recent ERA-20C reanalysis, which covers the...

  16. Teaching about 21st Century Energy Sources to Pre-college Students and Teachers

    Science.gov (United States)

    Zwicker, Andrew P.; Morgan, J.; Ritter, C.; DeLooper, J.; Guilbert, N.

    2006-12-01

    For several years, the Princeton Plasma Physics Laboratory has led a weeklong summer workshop on alternative energy sources for high school students. We have several versions of the workshop, depending upon the students participating. Recently, we offered the workshop to students attending a science magnet school, students from a large, urban school, and “learning different” students. Students perform a variety of “design and build” projects, one for each of the major energy sources. Energy sources typically explored include solar, hydrogen fuel cells, and fusion. Along with the laboratory exercises, students work on virtual experiments, computer simulations and some lecture. This summer, we will begin a four-week professional development program centered on the same topic. Participants will use their work in the laboratory and classroom to develop inquiry-based curricula, aligned with State and National standards that use energy as a theme for exploring various topics in physics and physical science. A description of each workshop will be given along with results from various exit surveys that probe the impact of the workshop on student attitudes towards energy.

  17. Twenty-first century learning in school systems: the case of the Metropolitan School District of Lawrence Township, Indianapolis, Indiana.

    Science.gov (United States)

    Capuano, Marcia; Knoderer, Troy

    2006-01-01

    To empower students with skills such as information and technological literacy, global awareness and cultural competence, self-direction, and sound reasoning, teachers must master these skills themselves. This chapter examines how the Digital Age Literacy Initiative of the Metropolitan School District of Lawrence Township in Indianapolis, Indiana, which is funded by the Lilly Endowment, incorporated twenty-first century learning through a systemic approach involving teacher training and the use of data. The authors explain the district's content, process, and context goals toward accomplishing its mission of empowering students with the necessary twenty-first century skills to succeed in the digital age. The district places a strong emphasis on professional development for teachers. To support the necessary teacher learning and therefore sustain the work of the initiative, the district has adopted action research, self-assessment, and an online professional development network. To support teachers in implementing new strategies, master teachers serve as digital age literacy coaches. The chapter discusses the initiative's focus on evidence of progress. Through a partnership with the Metiri Group of California, the district has built a range of assessments including online inventories and twenty-first century skill rubrics. For example, the Mankato Survey collected teacher and student data around access, ability, and use of technology in the classroom in 2001 and then in 2004. This research showed significant gains in some technologies across all grade levels and consistent gains in nearly all technologies for middle and high school students. As it moves into the next phase of implementing the Digital Age Literacy Initiative, the district embraces the systemic shifts in school culture necessary to institutionalize twenty-first century learning. PMID:17017261

  18. Framework for Energy Neutral Treatment for the 21st Century Through Energy Efficient Aeration (WERF Report INFR2R12)

    Science.gov (United States)

    Aeration is commonly identified as the most significant energy use in the treatment of wastewater and therefore garners significant focus in reducing energy use in the ultimate aspirational goal of achieving net energy neutrality for water resource recovery. This research establi...

  19. DB Riley-low emission boiler system (LEBS): Superior power for the 21st century

    Energy Technology Data Exchange (ETDEWEB)

    Beittel, R. [DB Riley, Inc., Worcester, MA (United States); Ruth, L.A. [Dept. of Energy, Pittsburgh, PA (United States)

    1997-12-31

    In conjunction with the US Department of Energy, DB Riley, Inc., is developing a highly advanced coal-fired power-generation plant called the Low Emission Boiler Systems (LEBS). By the year 2000, LEBS will provide the US electric power industry with a reliable, efficient, cost-effective, environmentally superior alternative to current technologies. LEBS incorporates significant advances in coal combustion, supercritical steam boiler design, environmental control, and materials development. The system will include a state-of-the-art steam cycle operating at supercritical steam conditions; a slagging combustor that produces vitrified ash by-products; low nitrogen oxide (NOx) burners; a new, dry, regenerable flue gas cleanup system (copper oxide process) for simultaneously capturing sulfur dioxide (SO{sub 2}) and nitrogen oxides (NOx); a pulse-jet fabric filter for particulate capture; and a low-temperature heat-recovery system. The copper oxide flue gas cleanup system, which has been under development at DOE`s Pittsburgh field center, removes over 98% of SO{sub 2} and 95% of NOx from flue gas. A new moving-bed design provides efficient sorbent utilization that lowers the cleanup process cost. The captured SO{sub 2} can be converted to valuable by-products such as sulfuric acid and/or element sulfur, and the process generates no waste.

  20. Achieving cheap clean energy for all in the 21^st Century?

    Science.gov (United States)

    Gupta, Rajan

    2006-11-01

    Energy is essential for modern life and is a critical resource that we take for granted. Unfortunately, we are increasingly confronted by many unsettling questions: Is there enough cheap oil and gas remaining and should we start changing our life styles towards energy efficiency? What will be the price of oil and gas next year and will we face shortages? Are rising prices reflective of greed and manipulation or geopolitics or of real constraints? Will renewable sources provide a significant fraction of our energy needs? Is global warming already happening and is it a result of our ``addiction to oil''? If the answer to these is ``yes'', then what can we, as individuals, do to help ourselves, the nation, and the world? This talk will attempt to answer these questions by examining the global oil, gas and other resources, emerging constraints and opportunities, and geopolitics.

  1. Energy options open to mankind beyond the turn of the century

    International Nuclear Information System (INIS)

    It is stated that the real potential of nuclear power becomes visible only when a long-range time horizon beyond the year 2000 is considered. A prudent assessment then requires consideration of not only the nuclear option but also other options that may be open beyond the year 2000. This involves a global consideration of future energy demands. Headings of the paper are as follows - Global energy demand; renewable energy resources; the long range options - the case of solar power; the long range options - the case of nuclear power; and the case of coal. It is concluded that the solar option and the nuclear option offer the opportunity for a practically unlimited supply of power for the world. Coal has the largest potential of all fossil resources and when strategically employed and combined with non-fossil process heat it could cater for transportation purposes for perhaps 200 years or more. All of this provides a fairly optimistic picture. 10 references. (UK)

  2. International conference: nuclear power for the 21 st century; Conference internationale: L'energie nucleaire au 21. siecle

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-07-01

    It is widely recognised that global energy demand will rise substantially during this century. The increased industrialization and urbanization of developing countries will produce large increases in energy demand in regions that currently have very low per capita energy use. This increasing demand for energy will need to be met in order to improve living standards for at least half of the world population and to reduce the economic imbalances between countries and regions. At the same time the use of fossil fuel based energy is identified as a major cause of environmental damage. The release of greenhouse gases from burning of fossil fuel in power stations and for transport is seen as a contributor to global warming. It is widely recognised that continued exploitation of fossil fuels and release of carbon dioxide will need to be controlled. After a prolonged period of slow development of nuclear power, confined to some countries in the world, it is now being recognised that nuclear energy has a potentially significant role to play in meeting the energy needs of the planet without damaging the environment. Developments in technology make the economics of nuclear power more attractive, and they may become even more so as fossil fuel prices continue to rise.or a widespread use of nuclear power, however, there remain concerns on the safety, security, waste and proliferation aspects. The global application of safety standards and appropriate security measures are required to ensure acceptable levels of protection. Effective control measures are required to ensure that non-proliferation commitments are honored. Handling nuclear waste safely and securely is achievable, but continues to remain as a public concern. The broad strategic objectives of the Conference are the following: to review the role of nuclear power and to define the potential benefits (energy security, sustainability and improved environmental protection) that expanding nuclear power offers to meet the

  3. Energy use of U.S. consumer electronics at the end of the 20th century

    International Nuclear Information System (INIS)

    The major consumer electronics in U.S. homes accounted for over 10 percent of U.S. residential electricity consumption, which is comparable to the electricity consumed by refrigerators or lighting. We attribute 3.6 percent to video products, 3.3 percent to home office equipment, and 1.8 percent to audio products. Televisions use more energy than any other single product category, but computer energy use now ranks second and is likely to continue growing. In all, consumer electronics consumed 110 THw in the U.S. in 1999, over 60 percent of which was consumed while the products were not in use

  4. About energy vision in the twenty first century and the role of ecological resources

    International Nuclear Information System (INIS)

    It is now frequently recommended, that only ecological resources can save us and keep for the mankind more or less contemporary way of living for future. During such consideration it is obviously forgotten that ecological wind and sun have occasional character and that still we do not know how to store great amount of energy. It is also not easy to estimate, what is the maximal capacity of such resources, supposing that we want all such energy use. Work estimate one special case in which all ecological resources are fully correlated-the same wind or sun on all places of local power stations-typically one state or economy. (Author)

  5. Energy needs for the 21st century and South Africa's strategies to meet them

    International Nuclear Information System (INIS)

    Her Excellency L. Xingwana, Deputy Minister of Minerals and Energy, South Africa, noted that the President of South Africa has announced that in eight years universal access to electricity would be achieved. This means an additional three million households will be supplied through the electricity grid. Currently in excess of 300 000 new households per annum are being supplied with electricity. She stated that in a country that has abundant uranium resources, ways of utilizing this resource for peace and economic development would continue to be sought. The pebble bed modular reactor (PBMR) was borne out of the need to ensure security of supply through diversity. She commented that the decision to proceed with the PBMR project was taken with a full understanding that successful commissioning of the project will contribute towards efforts aimed at meeting the Millennium Development Goals and will enhance sustainable socioeconomic development. She noted that the IAEA Statute, inter alia, advocates that Member States have the inalienable right to access and/or acquire nuclear technology for peaceful purposes. She then added that for nuclear energy to succeed a lot of effort has to go towards superior designs that are economically viable and proliferation resistant. Nuclear energy cannot thrive without social acceptance. Programmes aimed at educating the public on the benefits of nuclear energy must be enhanced. It is necessary to guard against talking amongst ourselves and to reach out to society. The development and maintenance of a national infrastructure to ensure a peaceful and safe use of nuclear power is essential. In this regard, she expressed her gratitude for the work done by the IAEA in supporting Member States and hoped that these programmes will in future be enhanced, as the dawn of a nuclear energy future is no longer in question. She asked that the international community strengthen regional bodies, for example AFRA (African Regional Co

  6. Physiocracy: Leading political and social-economic system of the XVIIIth Century in France

    OpenAIRE

    DE MEYERE, Pieter

    2009-01-01

    In France the XVIIIth century was characterized by the Enlightenment as a philosophical phenomenon and Physiocracy as an expression of new economic thinking. But the Physiocrats were not merely a school of economic thought, they were also a school of political action. Kings, princes and high public servants were among their pupils. The great French Revolution itself was influenced by their writings. And the force of their work is still not fully spent. In order to appreciate the theory and si...

  7. World energy data system (WENDS)

    International Nuclear Information System (INIS)

    This paper presents a unique application of System 2000: the storage of preformatted textual information in a completely user oriented data base. The World Energy Data System is an information system which allows qualified users online access to non-classified management level data on worldwide energy technology and research and development activities. WENDS has been used to transmit up-to-date informaion on foreign energy technology and research and development programs to DOE program divisions, the Congress, and other U.S. government officials going abroad. The WENDS concept is first described. Then, the method of storage of the textual information is discussed followed by a discussion of the retrieval system which is thoroughly designed to serve the user

  8. EU energy policies towards the 21st century: a business intelligence report

    International Nuclear Information System (INIS)

    This report discusses the EU energy policy, and examines the single market, the internal electricity and gas markets, and the single market with respect to coal, oil and biofuel. The environmental policy, the control of air quality, climate change policies, security of supplies, and economic and social cohesion are addressed. Nuclear issues, research and demonstration programmes, EU enlargement, and international affairs are discussed. (UK)

  9. Efficient integration of renewable energy into future energy systems. Development of European energy infrastructures in the period 2030 to 2050

    Energy Technology Data Exchange (ETDEWEB)

    Funk, Carolin; Uhlig, Jeanette; Zoch, Immo (eds.)

    2011-10-15

    In consideration of strategic climate mitigation, energy security and economic competitiveness goals, the EU passed the Directive 2009/28/EC, including a binding target of 20 per cent renewable energy consumption in the EU by 2020. This target is comprehensive and includes energy generation, transport, heating and cooling sectors. In 2008, renewable energy consumption in the EU was about 10 per cent. So meeting the 20 per cent renewable energy objective will require massive changes in energy production, transmission and consumption in the EU. Furthermore, it is obvious that the development of the energy system will not stop in 2020, but that it will continue towards 2050 and beyond. Over the past century, the European electricity system was developed in line with a national utilit y perspective which heavily emphasised large, centralised conventional power production. Investment decisions for new energy infrastructure and technology were typically made at the national level. In the future, much more energy production will be based on local or regional renewable energy sources (RES). Many consumers may also become energy producers feeding into the infrastructures. Transnational energy transfers will gain in importance. These changes will require very different electricity and gas infrastructures and decision-making processes from today. Lack of infrastructure capacity is already a barrier for the further deployment of RES-based energy production in some regions in Europe. (orig.)

  10. Isomer Energy System Design Concepts

    Energy Technology Data Exchange (ETDEWEB)

    Vogt, D

    2003-09-01

    Isomer energy supplies offer the potential to increase the output power over time to accommodate varying power needs. Other materials with similar energy density (for example isotopic energy sources such as {sup 238}Pu) do not offer the potential to increase power with time. Often the design life of an energy source is significant when compared to the half-life of the isotope. As a result, the conventional isotopic energy supplies operate with significant excess power at start of life to meet the power needs at end-of-life. For example a {sup 238}Pu radioisotope energy supply with a 35-year design life must account for radioactive decay losses of about 25% of the plutonium present at the start of life. This decay loss is significant if the required output power from the device is constant with time. If the required power output from the device increases with time (such as some space applications), significant increases in power supply weight are required to meet design power requirements. Isomer energy supplies offer the potential to increase the output power over time to meet varying power needs, thereby offering a significant advantage over conventional systems. Isomer energy supplies also offer the possibility of being ''turned on'' based on need at a specific time. These characteristics offer distinct advantages to isomer energy supplies. This report examines the basic engineering characteristics of a hypothetical isomer energy supply in order to gain insight into properties of isomers that will make them potentially useful as energy sources in engineered systems. These isomer properties provide a basis for identification of candidate isomers and provide a basis for an isomer search.

  11. Fossil fuels and clean, plentiful energy in the 21st century: the example of coal

    OpenAIRE

    Jaccard, Mark

    2007-01-01

    Many people believe we must quickly wean ourselves from fossil fuels to save the planet from environmental catastrophe, wars and economic collapse. However, we have the technological capability to use fossil fuels without emitting climate-threatening greenhouse gases or other pollutants. The natural transition from conventional oil and gas to unconventional oil, unconventional gas and coal for producing electricity, hydrogen and cleaner-burning fuels will decrease energy dependence on politic...

  12. Energy performance assessment of an intelligent energy management system

    OpenAIRE

    Gangolells Solanellas, Marta; Casals Casanova, Miquel; Forcada Matheu, Núria; Macarulla Martí, Marcel; Giretti, Alberto

    2016-01-01

    Although energy management systems are expected to result in decreased energy consumption, it is important not to overlook the energy used until commissioning (including raw materials acquisition, manufacturing and transportation) and during the usage phase (including operation and maintenance). This paper examines the energy performance of an intelligent energy management system for underground metro stations. The results show that the energy management system has high energy performance in ...

  13. Nuclear fusion as an energy option for the 21st Century

    International Nuclear Information System (INIS)

    Under the point of view of the engineering, it is even a long road to travel before it is possible to build an economically competitive fusion reactor. In contrast, for each obstacle in the road different forms can be devised of approaching it, and the future is promising, whenever the necessary financing exists to support the investigations. The fusion can contribute to satisfy the energy necessities for the development of the civilization in a sustainable way, to medium term if it is used in symbiosis with the fission reactors, providing fuel and transmuting radioactive waste. In any event, this focus should be developed spreading the safety primarily in mind, and so the processes are economically competitive. Just as it can be appreciate in the sections of this work, the investigation in fusion requires of determination, discipline, and it is not for the weak of spirit. While other energy sources, particularly the renewable ones, they should take advantage in Mexico, the fusion is the more plaintiff, and it requires of scientific and technological resources of forefront. In certain form, together with the fission technology, it determines the crossroad that separates to the developed countries of those that are 'developing'. Brazil, South Korea, China and India, aware of the necessity of enough energy sources to sustain their development, they have already taken the initiative to accept the challenge. It corresponds Mexico to follow the example, or to stay in the status of 'developing country.' (Author)

  14. Electrical Energy Storage for Renewable Energy Systems

    Energy Technology Data Exchange (ETDEWEB)

    Helms, C. R.; Cho, K. J.; Ferraris, John; Balkus, Ken; Chabal, Yves; Gnade, Bruce; Rotea, Mario; Vasselli, John

    2012-08-31

    This program focused on development of the fundamental understanding necessary to significantly improve advanced battery and ultra-capacitor materials and systems to achieve significantly higher power and energy density on the one hand, and significantly lower cost on the other. This program spanned all the way from atomic-level theory, to new nanomaterials syntheses and characterization, to system modeling and bench-scale technology demonstration. Significant accomplishments are detailed in each section. Those particularly noteworthy include: • Transition metal silicate cathodes with 2x higher storage capacity than commercial cobalt oxide cathodes were demonstrated. • MnO₂ nanowires, which are a promising replacement for RuO₂, were synthesized • PAN-based carbon nanofibers were prepared and characterized with an energy density 30-times higher than current ultracapacitors on the market and comparable to lead-acid batteries • An optimization-based control strategy for real-time power management of battery storage in wind farms was developed and demonstrated. • PVDF films were developed with breakdown strengths of > 600MVm⁻¹, a maximum energy density of approximately 15 Jcm⁻³, and an average dielectric constant of 9.8 (±1.2). Capacitors made from these films can support a 10-year lifetime operating at an electric field of 200 MV m⁻¹. This program not only delivered significant advancements in fundamental understanding and new materials and technology, it also showcased the power of the cross-functional, multi-disciplinary teams at UT Dallas and UT Tyler for such work. These teams are continuing this work with other sources of funding from both industry and government.

  15. Opening Statement - Angel Gurria [International Ministerial Conference on Nuclear Energy in the 21. Century: Addressing Energy Needs and Environmental Challenges, Beijing (China), 20-22 April 2009

    International Nuclear Information System (INIS)

    It is a great honour to open this International Ministerial Conference on Nuclear Energy. It is also a privilege for the OECD Nuclear Energy Agency to co-sponsor this conference. I wish to thank both our hosts, the International Atomic Energy Agency and the Government of China, represented by the Ministry of Industry and Information Technology and the China Atomic Energy Authority, for convening us today to advance on our common goal: to secure clean and peaceful nuclear power for the 21st century. The global crisis has exposed not only the paramount challenges of today?s global economy and the remarkable level of interdependence among our nations. It has also confronted us with our duty to define the kind of global economy we need for tomorrow. It is our responsibility to devise sound policies for a stronger, cleaner and fairer global economy. Clean and affordable energy, including access to safe and secure nuclear power, should be a central element of our efforts. This is essential not only for a sustainable economy, but also for the future of our planet. The crisis has prompted us to act immediately and in concert. Take the example of our hosts, the Government of China. In the face of the economic slowdown, they responded rapidly and in a comprehensive fashion. Importantly, they increased government spending, and stimulated domestic demand, and are looking into effective ways to enhance social policies. The turmoil showed that China and all of us need to be more involved in international economic cooperation. We are profoundly affected by the policies implemented by each of our countries. There is no better example than energy to illustrate our interdependence. Holding this meeting in Beijing shows the importance China places on international cooperation and recognizes the role China could play in designing clean and safe energy solutions for the future. For me, coming to Beijing is also an opportunity to stress the high significance of the OECD partnership with

  16. Panel report on corrosion in energy systems

    International Nuclear Information System (INIS)

    Corrosion problems in high-temperature (non aqueous) energy systems, corrosion in aqueous energy systems and institutional problems inhibiting the development of corrosion science and engineering are discussed

  17. Potential energy of dinuclear system

    International Nuclear Information System (INIS)

    The effective calculation method of the dinuclear system potential energy is proposed. The analytical expressions are obtained to calculate the nuclear part of the nucleus-nucleus potential in the double folding form. The relationship of this potential with proximity potential is found. The influence of deformation and orientation of the nuclei on the interaction potential is investigated. Due to the balance in binding energies the excited states of some nuclei can be imagined as dinuclear or trinuclear systems. (author). 27 refs.; 8 figs

  18. Laboratories for the 21st Century Best Practices: Energy Recovery in Laboratory Facilities

    Energy Technology Data Exchange (ETDEWEB)

    None

    2012-06-01

    Laboratories typically require 100% outside air for ventilation at higher rates than other commercial buildings. Minimum ventilation is typically provided at air change per hour (ACH) rates in accordance with codes and adopted design standards including Occupational Safety and Health Administration (OSHA) Standard 1910.1450 (4 to 12 ACH – non-mandatory) or the 2011 American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) Applications Handbook, Chapter 16 – Laboratories (6 to 12 ACH). While OSHA states this minimum ventilation rate “should not be relied on for protection from toxic substances released into the laboratory” it specifically indicates that it is intended to “provide a source of air for breathing and for input to local ventilation devices (e.g., chemical fume hoods or exhausted bio-safety cabinets), to ensure that laboratory air is continually replaced preventing the increase of air concentrations of toxic substances during the working day, direct air flow into the laboratory from non-laboratory areas and out to the exterior of the building.” The heating and cooling energy needed to condition and move this outside air can be 5 to 10 times greater than the amount of energy used in most office buildings. In addition, when the required ventilation rate exceeds the airflow needed to meet the cooling load in low-load laboratories, additional heating energy may be expended to reheat dehumidified supply air from the supply air condition to prevent over cooling. In addition to these low-load laboratories, reheat may also be required in adjacent spaces such as corridors that pro-vide makeup air to replace air being pulled into negative-pressure laboratories.

  19. Industrial energy systems and assessment opportunities

    Science.gov (United States)

    Barringer, Frank Leonard, III

    Industrial energy assessments are performed primarily to increase energy system efficiency and reduce energy costs in industrial facilities. The most common energy systems are lighting, compressed air, steam, process heating, HVAC, pumping, and fan systems, and these systems are described in this document. ASME has produced energy assessment standards for four energy systems, and these systems include compressed air, steam, process heating, and pumping systems. ASHRAE has produced an energy assessment standard for HVAC systems. Software tools for energy systems were developed for the DOE, and there are software tools for almost all of the most common energy systems. The software tools are AIRMaster+ and LogTool for compressed air systems, SSAT and 3E Plus for steam systems, PHAST and 3E Plus for process heating systems, eQUEST for HVAC systems, PSAT for pumping systems, and FSAT for fan systems. The recommended assessment procedures described in this thesis are used to set up an energy assessment for an industrial facility, collect energy system data, and analyze the energy system data. The assessment recommendations (ARs) are opportunities to increase efficiency and reduce energy consumption for energy systems. A set of recommended assessment procedures and recommended assessment opportunities are presented for each of the most common energy systems. There are many assessment opportunities for industrial facilities, and this thesis describes forty-three ARs for the seven different energy systems. There are seven ARs for lighting systems, ten ARs for compressed air systems, eight ARs for boiler and steam systems, four ARs for process heating systems, six ARs for HVAC systems, and four ARs for both pumping and fan systems. Based on a history of past assessments, average potential energy savings and typical implementation costs are shared in this thesis for most ARs. Implementing these ARs will increase efficiency and reduce energy consumption for energy systems in

  20. Energy efficient distributed computing systems

    CERN Document Server

    Lee, Young-Choon

    2012-01-01

    The energy consumption issue in distributed computing systems raises various monetary, environmental and system performance concerns. Electricity consumption in the US doubled from 2000 to 2005.  From a financial and environmental standpoint, reducing the consumption of electricity is important, yet these reforms must not lead to performance degradation of the computing systems.  These contradicting constraints create a suite of complex problems that need to be resolved in order to lead to 'greener' distributed computing systems.  This book brings together a group of outsta

  1. Simulating an integrated energy system

    Energy Technology Data Exchange (ETDEWEB)

    Mehrez, A.; Stern-Sinuary, Z.

    1982-04-01

    A simulation model of an integrated energy system can help a consumer decide whether to purchase a new system for generating electricity, and what the size of its components should be. In the present study, the system consists of a liquid-metal magnetohydrodynamic (LMMHD) converter, parabolic sun collectors, and a heat storage unit. The system is in the final stages of development at the Ben-Gurion University of the Negev. The consumer in this study is a typical Israeli collective farm (kibbutz). The consumer's aim is to reduce the expected discounted unit cost of electricity.

  2. Color-coordinate system from a 13th-century account of rainbows.

    Science.gov (United States)

    Smithson, Hannah E; Anderson, Philip S; Dinkova-Bruun, Greti; Fosbury, Robert A E; Gasper, Giles E M; Laven, Philip; McLeish, Tom C B; Panti, Cecilia; Tanner, Brian K

    2014-04-01

    We present a new analysis of Robert Grosseteste's account of color in his treatise De iride (On the Rainbow), dating from the early 13th century. The work explores color within the 3D framework set out in Grosseteste's De colore [see J. Opt. Soc. Am. A29, A346 (2012)], but now links the axes of variation to observable properties of rainbows. We combine a modern understanding of the physics of rainbows and of human color perception to resolve the linguistic ambiguities of the medieval text and to interpret Grosseteste's key terms. PMID:24695192

  3. Gas in the new world energy balance in the 21. century; Le gaz dans le nouvel equilibre energetique mondial au 21. siecle

    Energy Technology Data Exchange (ETDEWEB)

    Ameziane Dahmani, M.

    2000-07-01

    Energy is a field with various sensitivities. They are economic technical political and even geopolitical. These sensitivities strongly marked the evolution of the world energy scene by disturbances, crises and changes. Most of the energy crises the world has experienced most specially during the second half of the 20. century show break of the balance very much detrimental on the relationship and positions between the concerned parties. Therefore the question is whether with the gas development it would be possible to tend during the 21. century to a new world energy balance which would be stable and lasting. That would be legitimate in our opinion. In fact this is what this communication is proposing to deal with. (author)

  4. Biomass as feedstock for chemicals and energy on the threshold of the 21st. century

    International Nuclear Information System (INIS)

    A historical background is first given in which the role of biomass is described in relation to its competition with fossil biomass for the production of chemicals and energy. Occurrences of reserves from both sources are then compared. Petrochemical and biomass routes are then analyzed in terms of their relative competitive advantages. The oleochemical and biotechnology cases are analyzed in more detail as examples of biomass utilization. Latin American examples of industrial manufacturing of biomass derived chemicals are then provided. Alcochemicals are analyzed in detail as well as essential oils and other chemicals. Finally, references are made to regional Latin American initiatives regarding biomass and the objectives, organization and nature of the initiative are presented

  5. Laser targets and experiments for the sake of science and energy in the 22nd century

    Indian Academy of Sciences (India)

    N G Borisenko; Yu A Merkuliev

    2010-12-01

    Laser fusion for energy and hybride schemes with laser application are original and highly tempting because they are ecofriendly, with almost unlimited resources. Though quite challenging, even development stage is fruitful in hi-tech and provides vast fundamental knowledge. The present paper discusses important results concerning target fabrication detailing several finer points of view which may not appear obvious. The current status of and achievements in targets are provided and validation experiments are discussed. The prospects and the unexpected difficulties are presented. The comparable resources and cost (unlike sizes differing orders of magnitude) for the targets and for driver over the driver’s life cycle scale prove there is no time to waste with target technology findings and validation experiments, especially in view of ignition shortly expected with National Ignition Facility.

  6. Nuclear energy - the century's principles of law and good conduct in international nuclear trade

    International Nuclear Information System (INIS)

    This paper considers the object and nature of the models of nuclear co-operation between Brazil and developed countries, with regard to the peaceful uses of nuclear energy. As an observer, the author analyses some of the juridicial and ethical aspects of the Brazilian Nuclear Programme. She examines some of the realities to be faced, and points out how important it is to anticipate and take necessary steps in order that difficulties, which are easily identifiable, may be reversed in the near future. The author also calls into question the means for reversal of the current situation, so as to satisfy the parties concerned: Brazil and her potential partners. Finally, the paper aims at complying with the conclusions reached by Working Group number 3 of the International Law Association on ''The Principles of Good Conduct in the International Nuclear Trade''. (author)

  7. Power Management for Energy Systems

    DEFF Research Database (Denmark)

    Hovgaard, Tobias Gybel

    penetration of renewable, fossil-free energy sources such as solar and wind power. To facilitate such intermittent power producers, we must not only control the production of electricity, but also the consumption, in an ecient and exible manner. By enabling the use of thermal energy storage in supermarkets......In this thesis, we consider the control of two different industrial applications that belong at either end of the electricity grid; a power consumer in the form of a commercial refrigeration system, and wind turbines for power production. Our primary studies deal with economic model predictive...... for introducing more energy ecient as well as cost reducing control techniques. At the same time, the power grid is evolving from a centralized system with rather controllable production in the conventional power plants to a much more decentralized network of many independent power generators and a large...

  8. Photovoltaic power systems energy storage

    International Nuclear Information System (INIS)

    Basically, the solar photovoltaic power system consists of: Array of solar panels; Charge/voltage stabilizer; Blocking diode and Storage device. The storage device is a very important part of the system due to the necessity to harmonize the inevitable time shift between energy supply and demand. As energy storage, different devices can be utilized, such as hydropumping, air or other gas compression, flywheel, superconducting magnet, hydrogen generation and so on, but actually secondary (rechargeable) electrochemical cells appear to be the best storage device, due to the direct use for recharge of the d.c. current provided by the solar panels, without any intermediate step of energy transformation and its consequent loss of efficiency

  9. Energy storage system control strategies for power distribution systems

    Directory of Open Access Journals (Sweden)

    Areewan Kajorndech

    2015-03-01

    Full Text Available Energy storage systems have been widely employed to attain several benefits, such as reliability improvement, stabilization of power systems connected with renewable energy resources, economic benefits and etc. To achieve the above objectives, the appropriate and effective control strategies for energy storage systems are needed to be developed. This research proposes energy storage system control strategies for power distribution systems equipped with a limited size of energy storage system in order to improve reliability and save energy costs by determining an optimal charging schedule of the energy storage system. Simulation results demonstrate the benefits of energy storage system applications under the different control strategies.

  10. Approaches to Energy System Simulation

    DEFF Research Database (Denmark)

    Elmegaard, Brian; Jakobsen, Arne

    2002-01-01

    of many energy systems, identification of so-called cycle specification variables, their physical meaning and their numerical implications are discussed specifically. The example chosen is a Rankine power or cooling cycle. Similarities between modeling of power cycles and cooling cycles are finally summed...

  11. Energy management system of hybrid microgrid with energy storage

    OpenAIRE

    Marzband, Mousa; Sumper, Andreas; Chindris, Mircea; Tomoiaga, Bogdan

    2012-01-01

    The economic scheduling of the generation units is playing a significant role in the energy management of the hybrid stand alone microgrid. Energy storage is an increasingly important part of the renewable energy sector because of the need to store power during peak production times for use in off-peak periods. This paper describes an energy management system (EMS) for an islanded microgrid (MG) comprising wind energy conversion system (WECS),photovoltaic (PV), energy storage (ES) system, ...

  12. Orthovoltage energies for palliative care in the 21st century: Is there a need?

    Energy Technology Data Exchange (ETDEWEB)

    D' Alimonte, Laura, E-mail: Laura.Dalimonte@sunnybrook.c [Radiation Therapy, Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Toronto, Ontario, M4N 3M5 (Canada); Sinclair, Emily [Radiation Therapy, Department of Radiation Oncology, Odette Cancer Centre, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, Toronto, Ontario, M4N 3M5 (Canada); University of Toronto, Department of Radiation Oncology, Toronto, Ontario (Canada); Seed, Sharon [Radiation Therapy, Department of Radiation Oncology, Ottawa Hospital Cancer Centre, Ottawa, Ontario (Canada)

    2011-02-15

    Objective: The primary objective was to describe the patterns of practice for patients with rib metastases who were treated with radiation therapy for pain relief. The secondary objective was to determine if wait times and better access to radiation treatment for this patient population could be improved with the utilization of an orthovoltage treatment machine. Methods and Materials: Cancer registry data for patients with rib disease and radiation therapy technique were collected from January 2007 to December 2008. The data was examined to establish the utilization rate of orthovoltage treatment. Results: The data demonstrated that orthovoltage treatment was an underutilized technique for the palliative treatment of rib disease. More than half of the patients were treated with high energy (6 MV) photon beam with either a single direct photon field (16.2%) or a two field photon technique (47.4%). Electron beam technique represented 35.1% of treatments while orthovoltage constituted only 1.2% of rib treatments. Conclusion: The use of orthovoltage X-ray beams has been demonstrated to be an underutilized radiotherapy treatment technique at this institution. Orthovoltage treatment is a simple radiotherapy technique with a short setup time that may be a solution for minimizing treatment burden for an already overburdened patient population.

  13. Orthovoltage energies for palliative care in the 21st century: Is there a need?

    International Nuclear Information System (INIS)

    Objective: The primary objective was to describe the patterns of practice for patients with rib metastases who were treated with radiation therapy for pain relief. The secondary objective was to determine if wait times and better access to radiation treatment for this patient population could be improved with the utilization of an orthovoltage treatment machine. Methods and Materials: Cancer registry data for patients with rib disease and radiation therapy technique were collected from January 2007 to December 2008. The data was examined to establish the utilization rate of orthovoltage treatment. Results: The data demonstrated that orthovoltage treatment was an underutilized technique for the palliative treatment of rib disease. More than half of the patients were treated with high energy (6 MV) photon beam with either a single direct photon field (16.2%) or a two field photon technique (47.4%). Electron beam technique represented 35.1% of treatments while orthovoltage constituted only 1.2% of rib treatments. Conclusion: The use of orthovoltage X-ray beams has been demonstrated to be an underutilized radiotherapy treatment technique at this institution. Orthovoltage treatment is a simple radiotherapy technique with a short setup time that may be a solution for minimizing treatment burden for an already overburdened patient population.

  14. The energy for the 21. century: techniques, economy and environment; Energie au 21. siecle: techniques, economie, environnement

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-07-01

    12 papers have been presented. 1) Climate changing. The atmospheric circulation model coupled to the ocean model is the most powerful current tool to explain climate processes and to validate possible climate evolutions. 2) Health hazards due to the combustion of fossil fuels. The effects of atmospheric particles on mortality, cancer risks and on respiratory organs, are considered. 3) The evaluation of external effects of transport on the environment. The paper gives examples of exposure-response function relating to impacts on the built environment, atmospheric visibility, vegetation and human health. 4) Energy consumption and economic growth. 5) Impact of low radiation doses on human health. 6) Hydrogen: production methods and costs. 7) Fossil energies reserves: incertitude on definition, volume and forecasting. 8) Energetic valorization of biomass by thermo-chemical way. 9) Technical and economic aspects of wind energy. 10) Nuclear energy: the French example. 11) The future of photovoltaic energy, its actual growth rate is about 25-35 % a year and its main asset is to benefit technological progress that allows a sharp 50 % cut in costs every 10 years. 12) Fuel cells, their operating principle, the fuel used, their applications and perspective. (A.C.)

  15. The role of nuclear energy in Indonesia in the 21st century

    International Nuclear Information System (INIS)

    In this paper the prospect of the nuclear power plant for electric power generation or cogeneration in Indonesia is discussed. Form the current situation of Indonesian electric power generation and consumption map the installation of new electric power plant in most of the areas in Indonesia is urgently needed. For Java-Bali area large and medium nuclear power plants are a good option in the future, but for outside Java-Bali area, due to the electric line network limitation, small and medium nuclear power plants are better option. Ship based nuclear power plant can help stabilisation of electric generation especially for outside Java-Bali area. And, for very small electric power generation, an Accelerator Driven System (ADS) is a possible candidate. (author)

  16. Opening Statement - Chen Qiufa [International Ministerial Conference on Nuclear Energy in the 21. Century: Addressing Energy Needs and Environmental Challenges, Beijing (China), 20-22 April 2009

    International Nuclear Information System (INIS)

    The China Atomic Energy Authority is the authority responsible for China?s nuclear industry development and the representative organization of the Chinese Government for participating in IAEA related activities. As the Chairman of the CAEA, I would like to use this opportunity to share my views on nuclear energy development. As an important part of modern high level technology, nuclear energy, as a proven, safe and clean source of energy, plays an outstanding role in the economic and social development of humanity. The development and application of nuclear energy, involving basic nuclear research, engineering design, equipment manufacturing, nuclear fuel supply, nuclear safety regulation, nuclear waste treatment and disposal, nuclear non-proliferation, public acceptance and so on, is fairly complicated systematic engineering. Looking back on China?s more than 50 year history of nuclear energy, and looking to the promising prospect of nuclear energy development in the new century, I believe the following six development rules should be prioritized, so as to achieve sustainable and healthy development of nuclear energy for the benefits of society. MAKE OVERALL PLANS The development of nuclear energy should proceed from the strategic overall picture, including national economic development, social progress and environmental protection, obtaining a common understanding of the social, making long term development plans, and carrying them out consistently. At the beginning of reform and opening-up, when China had just begun its nuclear power development, the Three Mile Island nuclear power plant accident and the Chernobyl accident happened, which plunged the world nuclear industry into stagnation. The Chinese Government made the decision to continue to develop nuclear energy for economic development, which laid the foundation for China?s nuclear energy industry. In recent years, the Chinese Government has made the strategic decision of actively promoting nuclear energy

  17. Decentralized energy from waste systems

    International Nuclear Information System (INIS)

    In the last five years or so, biofuels have been given notable consideration worldwide as an alternative to fossil fuels, due to their potential to reduce greenhouse gas emissions by partial replacement of oil as a transport fuel. The production of biofuels using a sustainable approach, should consider local production of biofuels, obtained from local feedstocks and adapted to the socio-economical and environmental characteristics of the particular region where they are developed. Thus, decentralized energy from waste systems will exploit local biomass to optimize their production and consumption. Waste streams such as agricultural and wood residues, municipal solid waste, vegetable oils, and algae residues can all be integrated in energy from waste systems. An integral optimization of decentralized energy from waste systems should not be based on the optimization of each single process, but the overall optimization of the whole process. This is by obtaining optimal energy and environmental benefits, as well as collateral beneficial co-products such as soil fertilizers which will result in a higher food crop production and carbon dioxide fixation which will abate climate change. (author)

  18. Decentralized Energy from Waste Systems

    Directory of Open Access Journals (Sweden)

    Blanca Antizar-Ladislao

    2010-01-01

    Full Text Available In the last five years or so, biofuels have been given notable consideration worldwide as an alternative to fossil fuels, due to their potential to reduce greenhouse gas emissions by partial replacement of oil as a transport fuel. The production of biofuels using a sustainable approach, should consider local production of biofuels, obtained from local feedstocks and adapted to the socio-economical and environmental characteristics of the particular region where they are developed. Thus, decentralized energy from waste systems will exploit local biomass to optimize their production and consumption. Waste streams such as agricultural and wood residues, municipal solid waste, vegetable oils, and algae residues can all be integrated in energy from waste systems. An integral optimization of decentralized energy from waste systems should not be based on the optimization of each single process, but the overall optimization of the whole process. This is by obtaining optimal energy and environmental benefits, as well as collateral beneficial co-products such as soil fertilizers which will result in a higher food crop production and carbon dioxide fixation which will abate climate change.

  19. Twenty-first century learning in states: the case of the Massachusetts educational system.

    Science.gov (United States)

    Driscoll, David P

    2006-01-01

    A current crisis in education is leaving students less prepared to succeed in the working world than any generation before them. Increasingly complex external, nonacademic pressures have an impact on many of today's students, often causing them to drop out of school. Only 76 percent of Massachusetts high school students graduate, and only 29 percent earn a college degree. National figures are worse. Most educational institutions share a common goal to support students in becoming skilled, productive, successful members of society, but the author argues that this goal is not being met. Despite the constant changes in the world, educational practices have remained static. Most public schools are not adapting to meet the shifting needs of students. Universities are not able to prepare the right mix of prospective employees for the demands of the job market; for example, schools are graduating only 10 percent of the needed engineers. Institutions of higher learning cannot keep up with employers' needs in an evolving global market: strong math, science, and writing abilities; critical thinking skills; and the ability to work in teams. The author draws on exemplary efforts at work in his home state of Massachusetts--whose improvements in student achievement outcomes have been some of the best in the nation--to suggest there is promise in twenty-first century learning. Middle school students involved in a NASA-funded project write proposals, work in teams, and engage in peer review. Older students participate in enhanced, hands-on cooperative school-to-work and after-school programs. Schools are starting to offer expanded day learning, increasing the number of hours they are engaged in formal learning. Yet such programs have not reached significant levels of scale. The author calls for a major shift in education to help today's students be successful in the twenty-first century. PMID:17017262

  20. Energy Systems and Population Health

    Energy Technology Data Exchange (ETDEWEB)

    Ezzati, Majid; Bailis, Rob; Kammen, Daniel M.; Holloway, Tracey; Price, Lynn; Cifuentes, Luis A.; Barnes, Brendon; Chaurey, Akanksha; Dhanapala, Kiran N.

    2004-04-12

    It is well-documented that energy and energy systems have a central role in social and economic development and human welfare at all scales, from household and community to regional and national (41). Among its various welfare effects, energy is closely linked with people s health. Some of the effects of energy on health and welfare are direct. With abundant energy, more food or more frequent meals can be prepared; food can be refrigerated, increasing the types of food items that are consumed and reducing food contamination; water pumps can provide more water and eliminate the need for water storage leading to contamination or increased exposure to disease vectors such as mosquitoes or snails; water can be disinfected by boiling or using other technologies such as radiation. Other effects of energy on public health are mediated through more proximal determinants of health and disease. Abundant energy can lead to increased irrigation, agricultural productivity, and access to food and nutrition; access to energy can also increase small-scale income generation such as processing of agricultural commodities (e.g., producing refined oil from oil seeds, roasting coffee, drying and preserving fruits and meats) and production of crafts; ability to control lighting and heating allows education or economic activities to be shielded from daily or seasonal environmental constraints such as light, temperature, rainfall, or wind; time and other economic resources spent on collecting and/or transporting fuels can be used for other household needs if access to energy is facilitated; energy availability for transportation increases access to health and education facilities and allow increased economic activity by facilitating the transportation of goods and services to and from markets; energy for telecommunication technology (radio, television, telephone, or internet) provides increased access to information useful for health, education, or economic purposes; provision of energy

  1. Advanced Energy Efficient Roof System

    Energy Technology Data Exchange (ETDEWEB)

    Jane Davidson

    2008-09-30

    Energy consumption in buildings represents 40 percent of primary U.S. energy consumption, split almost equally between residential (22%) and commercial (18%) buildings.1 Space heating (31%) and cooling (12%) account for approximately 9 quadrillion Btu. Improvements in the building envelope can have a significant impact on reducing energy consumption. Thermal losses (or gains) from the roof make up 14 percent of the building component energy load. Infiltration through the building envelope, including the roof, accounts for an additional 28 percent of the heating loads and 16 percent of the cooling loads. These figures provide a strong incentive to develop and implement more energy efficient roof systems. The roof is perhaps the most challenging component of the building envelope to change for many reasons. The engineered roof truss, which has been around since 1956, is relatively low cost and is the industry standard. The roof has multiple functions. A typical wood frame home lasts a long time. Building codes vary across the country. Customer and trade acceptance of new building products and materials may impede market penetration. The energy savings of a new roof system must be balanced with other requirements such as first and life-cycle costs, durability, appearance, and ease of construction. Conventional residential roof construction utilizes closely spaced roof trusses supporting a layer of sheathing and roofing materials. Gypsum board is typically attached to the lower chord of the trusses forming the finished ceiling for the occupied space. Often in warmer climates, the HVAC system and ducts are placed in the unconditioned and otherwise unusable attic. High temperature differentials and leaky ducts result in thermal losses. Penetrations through the ceilings are notoriously difficult to seal and lead to moisture and air infiltration. These issues all contribute to greater energy use and have led builders to consider construction of a conditioned attic. The

  2. Design of atomic energy information network system

    International Nuclear Information System (INIS)

    As the 21st century is expected to induce a Knowledge based society, responding to this kind of change on our own initiative could be achieved by establishing networks among atomic energy agencies with the Atomic Energy Portal Site in a pivotal role. Thus, enabling the knowledge information from each agency to be easily shared and utilized. Furthermore, it can contribute to further researches by providing accumulated knowledge in the atomic energy, such as research output and past achievements, and by avoiding the repetition of researches on the same subjects. It could also provide remote educational data to researchers and industrial experts in atomic energy, as well as atomic energy information for general public consistently, so that we can promote our confidence in atomic energy

  3. Green Heat and Power. Eco-effective Energy Solutions in the 21st Century; Groenn kraft og varme. Miljoeeffektive energiloesninger i det 21. aarhundre

    Energy Technology Data Exchange (ETDEWEB)

    Palm, T.; Buch, C.; Kruse, B; Sauar, E.

    1999-06-01

    Norway has emerged as a major producer of oil, gas, and hydropower during the lifetimes of the authors of this report. Our accumulated experience in working on environmental conservation spans approximately 50 years, with our main area of concentration being energy and the environment. Although river systems have been harnessed into pipes and many oil fields have been developed, on the threshold of a new century we feel confident that the majority would agree that our future energy needs cannot be based and sustained on the exploitation of the natural environment. This report outlines how Norway can reposition itself to become an important energy supplier that can help solve environmental problems instead of create them. It is also a guide to what we think is important to know about energy and the challenges facing the environment. It is all too easy to become swamped by information, which is why we have elected to focus firmly on essentials. We not only look at the solutions of the past, we look into what the future may bring. New thinking and approaches to the problems that are as yet little known are outlined in detail. We seek to present solutions developed from a more integrated ''big-picture'' perspective. Our target audience is people with a general interest in the subject, individuals who work with these kinds of challenges on a day-to-day basis, politicians and other decision-makers, and people who are actively engaged in research and development. This report represents a stark contrast to the report published by the government-appointed energy co mission, a commission which was unable to demonstrate how Norway could both increase energy production and decrease energy consumption, while simultaneously reducing greenhouse-gas emissions in compliance with our international commitments. The report documents that up until the year 2020, Norway can free up one sixth of the electricity produced, reduce CO2 emissions by over 50%, produce 50

  4. Energy storage system control strategies for power distribution systems

    OpenAIRE

    Areewan Kajorndech; Dulpichet Rerkpreedapong

    2015-01-01

    Energy storage systems have been widely employed to attain several benefits, such as reliability improvement, stabilization of power systems connected with renewable energy resources, economic benefits and etc. To achieve the above objectives, the appropriate and effective control strategies for energy storage systems are needed to be developed. This research proposes energy storage system control strategies for power distribution systems equipped with a limited size of energy storage system ...

  5. Energy savings potential from energy-conserving irrigation systems

    Energy Technology Data Exchange (ETDEWEB)

    Wilfert, G.L.; Patton, W.P.; Harrer, B.J.; Clark, M.A.

    1982-11-01

    This report systematically compares, within a consistent framework, the technical and economic characteristics of energy-conserving irrigation systems with those of conventional irrigation systems and to determine total energy savings. Levelized annual costs of owning and operating both energy-conserving and conventional irrigation systems have been developed and compared for all 17 states to account for the differences in energy costs and irrigation conditions in each state. Market penetration of energy-conserving systems is assessed for those systems having lower levelized annual costs than conventional systems performing the same function. Annual energy savings were computed by matching the energy savings per system with an assumed maximum market penetration of 100 percent in those markets where the levelized annual costs of energy-conserving systems are lower than the levelized annual costs of conventional systems.

  6. Study on gas hydrate as a new energy resource in the 21th century

    Energy Technology Data Exchange (ETDEWEB)

    Ryu, Byeong-Jae; Kwak Young-Hoon; Kim, Won-Sik [Korea Institute of Geology Mining and Materials, Taejon (KR)] (and others)

    1999-12-01

    Natural gas hydrate, a special type of clathrate hydrates, is a metastable solid compound which mainly consists of methane and water, and generally called as gas hydrate. It is stable in the specific low-temperature/high-pressure conditions. Gas hydrates play an important role as major reservoir of methane on the earth. On the other hand, the formation and dissociation of gas hydrates could cause the plugging in pipeline, gas kick during production, atmospheric pollution and geohazard. To understand the formation and dissociation of the gas hydrate, the experimental equilibrium conditions of methane hydrate were measured in pure water, 3 wt.% NaCl and MgCl{sub 2} solutions. The equilibrium conditions of propane hydrates were also measured in pure water. The relationship between methane hydrate formation time and overpressure was also analyzed through the laboratory work. The geophysical surveys using air-gun system and multibeam echo sounder were implemented to develop exploration techniques and to evaluate the gas hydrate potential in the East Sea, Korea. General indicators of submarine gas hydrates on seismic data is commonly inferred from the BSR developed parallel to the see floor, amplitude blanking at the upper part of the BSR, and phase reversal and decrease of the interval velocity at BSR. The field data were processed using Geobit 2.9.5 developed by KIGAM to detect the gas hydrate indicators. The accurate velocity analysis was performed by XVA (X-window based Velocity Analysis). Processing results show that the strong reflector occurred parallel to the sea floor were shown at about 1800 ms two way travel time. The interval velocity decrease at this strong reflector and at the reflection phase reversal corresponding to the reflection at the sea floor. Gas hydrate stability field in the study area was determined using the data of measured hydrate equilibrium condition, hydrothermal gradient and geothermal gradient. The depth of BSR detected in the seismic

  7. Energy efficiency in manufacturing systems

    Energy Technology Data Exchange (ETDEWEB)

    Thiede, Sebastian [Technische Univ. Braunschweig (Germany). Inst. fuer Werkzeugmaschinen und Fertigungstechnik

    2012-07-01

    Energy consumption is of great interest to manufacturing companies. Beyond considering individual processes and machines, the perspective on process chains and factories as a whole holds major potentials for energy efficiency improvements. To exploit these potentials, dynamic interactions of different processes as well as auxiliary equipment (e.g. compressed air generation) need to be taken into account. In addition, planning and controlling manufacturing systems require balancing technical, economic and environmental objectives. Therefore, an innovative and comprehensive methodology - with a generic energy flow-oriented manufacturing simulation environment as a core element - is developed and embedded into a step-by-step application cycle. The concept is applied in its entirety to a wide range of case studies such as aluminium die casting, weaving mills, and printed circuit board assembly in order to demonstrate the broad applicability and the benefits that can be achieved.

  8. Energy Efficiency in Manufacturing Systems

    CERN Document Server

    Thiede, Sebastian

    2012-01-01

    Energy consumption is of great interest to manufacturing companies. Beyond considering individual processes and machines, the perspective on process chains and factories as a whole holds major potentials for energy efficiency improvements. To exploit these potentials, dynamic interactions of different processes as well as auxiliary equipment (e.g. compressed air generation) need to be taken into account. In addition, planning and controlling manufacturing systems require  balancing technical, economic and environmental objectives. Therefore, an innovative and comprehensive methodology – with a generic energy flow-oriented manufacturing simulation environment as a core element – is developed and embedded into a step-by-step application cycle. The concept is applied in its entirety to a wide range of case studies such as aluminium die casting, weaving mills, and printed circuit board assembly in order to demonstrate the broad applicability and the benefits that can be achieved.

  9. Economic Impacts of Future Changes in the Energy System - Global Perspectives

    DEFF Research Database (Denmark)

    Glynn, James; Fortes, Patrícia; Krook-Riekkola, Anna;

    2015-01-01

    climate change. This chapter summarises modelling methodologies developed in the ETSAP community to assess economic impacts of decarbonising energy systems at a global level. The next chapter of this book focuses on a national perspective. The range of economic impacts is regionally dependent upon......In a climate constrained future, hybrid energy-economy model coupling gives additional insight into interregional competition, trade, industrial delocalisation and overall macroeconomic consequences of decarbonising the energy system. Decarbonising the energy system is critical in mitigating...... driven developing countries such as China and India, and fossil fuel exporting nations can expect significantly higher GDP loss of up to 5 % GDP per year by mid-century....

  10. A System of Systems Approach to the EU Energy System

    Science.gov (United States)

    Jess, Tom; Madani, Kaveh; Mahlooji, Maral; Ristic, Bora

    2016-04-01

    Around the world, measures to prevent dangerous climate change are being adopted and may change energy systems fundamentally. The European Union (EU) is committed to reducing greenhouse gas emission by 20% by 2020 and by 80-95% by 2050. In order to achieve this, EU member states aim to increase the share of renewables in the energy mix to 20% by 2020. This commitment comes as part of a series of other aims, principles, and policies to reform the EU's energy system. Cost-efficiency in the emissions reductions measures as well as strategic goals under the Resource Efficient Europe flagship initiative which would include a more prudent approach to other natural resources such as water and land. Using the "System of Systems Approach", as from Hadian and Madani (2015), energy sources' Relative Aggregate Footprints (RAF) in the EU are evaluated. RAF aggregates across four criteria: carbon footprint, water footprint, land footprint, and economic cost. The four criteria are weighted by resource availability across the EU and for each Member State. This provides an evaluation of the overall resource use efficiency of the EU's energy portfolio and gives insight into the differences in the desirability of energy sources across Member States. Broadly, nuclear, onshore wind, and geothermal are most desirable under equal criteria weights and EU average weighting introduces only small changes in the relative performance of only few technologies. The member state specific weightings show that most countries have similar energy technology preferences. However, the UK deviates most strongly from the average, with an even stronger preference for nuclear and coal. Sweden, Malta and Finland also deviate from the typical preferences indicating the complexity in play in reforming the EU energy system. Reference Hadian S, Madani K (2015) A System of Systems Approach to Energy Sustainability Assessment: Are All Renewables Really Green? Ecological Indicators, 52, 194-206.

  11. Optimization of nuclear energy systems in respect of fuel management

    International Nuclear Information System (INIS)

    Present nuclear energy systems practically consist of thermal reactors; the utilization of produced plutonium is not significant. Therefore the efficiency of natural uranium utilization is very low. Should this practice continue after the end of the century, the nuclear fuel reserves will be exhausted within a very short time. To avoid this and because of economical considerations, nuclear energy systems should be developed which differ from the existing ones. To analyze this problem, a relationship is introduced to describe the fuel management of thermal reactors in a complex way and to evaluate and compare different types of thermal reactors. The complex fuel management of a system containing only HFBR is described, and the effect of the so-called external cycle time is analyzed independently. The fuel management of mixed systems with thermal and fast reactors at fuel equilibrium as well as the multi-region system based on such systems are discussed in detail. Long-term nuclear energy programs are investigated with respect to utilization of nuclear energy systems fuel reserves. (orig./HP)

  12. Energy Systems Group annual progress report 1984

    International Nuclear Information System (INIS)

    The report describes the work of the Energy Systems Group at Risoe National Laboratory during 1984. The activities may be roughly classified as development and use of energy-economy models, energy systems analysis, energy technology assessment and energy planning. The report includes a list of staff members. (author)

  13. A versatile energy management system for large integrated cooling systems

    OpenAIRE

    Du Plessis, Gideon Edgar; Liebenberg, Leon; Mathews, Edward Henry; Du Plessis, Johan Nicolaas

    2013-01-01

    Large, energy intensive cooling systems are found on deep level mines to supply chilled service water and cool ventilation air to the mine. The need exists for a simple, real-time energy management tool for large, integrated cooling systems. A versatile energy management system was developed for the large cooling systems of deep mines as a typical example of a generic systems-based energy management tool. The system connects to the SCADA systems of mines and features a hierarchica...

  14. Report of the fourth international symposium on symbiotic nuclear power systems for 21st century (ISSNP2013)

    International Nuclear Information System (INIS)

    The 5th International Symposium on Symbiotic Nuclear Power Systems for 21st Century (ISSNP2013) was held in Beijing, China in November 22-24, 2013, with the main objective for the nuclear power of international arena to overcome the Fukushima Daiichi accident towards more symbiotic nuclear power for post-Fukushima era. There were seventeen invited presentations and ca. seventy technical papers at the ISSNP2013, the subject of which were mostly related with (1) lessens from Fukushima Daiichi accident, (2) severe accident, (3) digital I and C systems, (4) human-machine interface, and (5) human factors engineering. This article provides the overview of the ISSNP2013 with giving condensed summaries of major invited presentations given by international experts. (author)

  15. THE STATE-POLITICAL SYSTEM OF THE FEUDAL STRUCTURES OF DAGESTAN IN THE MIDDLE XVIII - EARLY XIX CENTURY

    Directory of Open Access Journals (Sweden)

    Albina Umalatovna RABADANOVA

    2015-04-01

    Full Text Available The article highlights the public-political system of feudal structures in Dagestan in the middle XVIII-early XIX century, analyzes the political structures, reveals specific features of their administration. All political structures of Dagestan differed from each other in their territory, location in a certain part of the region, power structure, number of villages, internal and external borders, ethnic composition of the population, different spheres of economy, position in the system of political structures of Dagestan and relationships with them and other states, their role in the life of the region as a whole. All the fiefdoms in Dagestan (except for the Syurginsk Khanate were multi-ethnic formations, where lived different nations and ethnic groups, although one of them (Dargins, Avars, Kumyks, Lezgins, Laks, Tabasarans, Tsakhurs was a dominant part of the population in this or that area of the region. 

  16. Health risks of energy systems

    International Nuclear Information System (INIS)

    Electricity generation from fossil, nuclear or renewable sources causes an increased level of ambient air concentration of pollutants or an increased level of ionizing radiation due to activities at the various process steps of the energy systems, resulting in adverse health effects on the general public. Public health impacts from increased levels of airborne pollutants due to fossil fuel electricity generation have been calculated using a set of air quality models and recently reviewed exposure response functions. Since airborne pollutants from renewable energy (photovoltaic, wind) systems are mainly emitted from upstream activities, a full life cycle analysis has been performed to capture major impacts. The results show that the ranking of energy systems according to public risk depends strongly on the choice of the risk indicator. However, the general conclusion that can be drawn is that the risks resulting from the use of solid and liquid fossil fuels are at the upper end, while electricity generation from wind is an option with rather low risks per kilowatt-hour. To quantify the marginal risk induced by the choice of a specific technology, the concept of net risk has been introduced, taking into account only the difference between the risk of average industrial activities and the risk of the specific activity related to the fuel cycle of concern. Because of the high risk of underground mining, electricity production from coal has by far the highest occupational risks. Net risks from the photovoltaic system are negative, while occupational net risks from lignite, natural gas, wind and nuclear systems are positive but very low. 15 refs, 4 figs, 4 tabs

  17. Energy Management System for Domestic Electrical Appliances

    OpenAIRE

    Kuo-Ming Chao; Nazaraf Shah; Raymond Farmer; Adriana Matei

    2012-01-01

    A variety of energy management systems are currently available for domestic domain, and many are concerned with real-time energy consumption monitoring and display of statistical and real time data of energy consumption. Although these systems play a crucial role in providing a detailed picture of energy consumption in home environment and contribute to influencing energy consumption behavior, households are required to then take appropriate measures to reduce energy consumption. Some energy ...

  18. Einstein's Century

    Institute of Scientific and Technical Information of China (English)

    Jeremy Laurance; 贾庆文

    2005-01-01

    Albert Einstein began working at the patent office in Bern, Switzerland, a little more than a century ago. He had flunked the entrance exam for the Swiss Federal Insitute of Technology and took the job evaluating inventions because it paid a regular salary.

  19. Urban energy transition from 19th to 21th century : from biomass to fossil and fissil nergy in Paris (France)

    OpenAIRE

    Kim, Eun Hye

    2013-01-01

    Increasing urban natural resource consumption and particularly fossil energy consumption is one of the important factors of global environment alteration. To understand the socioecological transition process for the city, we characterize it as a natral resource dependant system in material and ecological terms. Cities rnobilize a technical system to draw the external natural resource. Therefore, externality is a fundamental character of urban metabolism. We focus in this work on the relations...

  20. Integrating renewables into energy systems

    International Nuclear Information System (INIS)

    An analysis of renewable energy schemes was undertaken via case studies in China, India, Indonesia, Kenya, South Africa, Thailand and Zimbabwe, that provided an insight into the application of best practice for overcoming market, technical and financial barriers to the establishment of the sustainable markets required for the large-scale deployment of renewable energy technologies. The project showed clearly the need to select and target interventions according to the context. Lessons were extracted against a number of themes, as well as against the various technologies analysed and simple guides to the principles of best practice were derived under the following headings:- experience of gaining access to (micro) finance; the technical and non-technical issues raised when small, typically independent, generators seek access to central electricity grid systems; how to best undertake awareness raising and dissemination activities; promoting, building and operating biogas systems; promoting, building and operating solar (photovoltaic) home systems; promoting, building and operating grid connected wind power; promoting, building and operating solar hot water systems; promoting agricultural cogeneration using crop residues. (author)

  1. Role of nuclear energy in environment, economy and energy issues of the 21st century green house gas emission constraint effects

    International Nuclear Information System (INIS)

    Role and potentials of nuclear energy system in the energy options are discussed from the viewpoint of sustainable development with protecting from global warming by using the energy module structure of GRAPE model. The analysis with respect to carbon emission control and nuclear fissile transaction among regions indicates the need of coordinated further development of energy conservation, renewable and nuclear energies, and rather drastic nuclear introduction in the presently developing world. The analysis also suggests the need of long-term planning and R and D efforts under the wisdom. (author)

  2. Decentalized solar photovoltaic energy systems

    Energy Technology Data Exchange (ETDEWEB)

    Krupka, M. C.

    1980-09-01

    Environmental data for decentralized solar photovoltaic systems have been generated in support of the Technology Assessment of Solar Energy Systems program (TASE). Emphasis has been placed upon the selection and use of a model residential photovoltaic system to develop and quantify the necessary data. The model consists of a reference home located in Phoenix, AZ, utilizing a unique solar cell array-roof shingle combination. Silicon solar cells, rated at 13.5% efficiency at 28/sup 0/C and 100 mW/cm/sup 2/ (AMI) insolation are used to generate approx. 10 kW (peak). An all-electric home is considered with lead-acid battery storage, dc-ac inversion and utility backup. The reference home is compared to others in regions of different insolation. Major material requirements, scaled to quad levels of end-use energy include significant quantities of silicon, copper, lead, antimony, sulfuric acid and plastics. Operating residuals generated are negligible with the exception of those from the storage battery due to a short (10-year) lifetime. A brief general discussion of other environmental, health, and safety and resource availability impacts is presented. It is suggested that solar cell materials production and fabrication may have the major environmental impact when comparing all facets of photovoltaic system usage. Fabrication of the various types of solar cell systems involves the need, handling, and transportation of many toxic and hazardous chemicals with attendant health and safety impacts. Increases in production of such materials as lead, antimony, sulfuric acid, copper, plastics, cadmium and gallium will be required should large scale usage of photovoltaic systems be implemented.

  3. Analysis of Photovoltaic Concentrating Solar Energy Systems

    OpenAIRE

    Garo Pilawjian

    2012-01-01

    In this paper the photovoltaic concentrating solar energy systems are analyzed. Both the Fresnel lens light refraction and mirror light reflection concentrating optical systems are considered. The main parameters and properties of photovoltaic concentrating solar energy systems are outlined. It is shown that the multi-parameter cost optimization is necessary to conduct to reduce the cost of photovoltaic concentrating solar energy systems.

  4. Advanced Energy Efficient Roof System

    Energy Technology Data Exchange (ETDEWEB)

    Jane Davidson

    2008-09-30

    Energy consumption in buildings represents 40 percent of primary U.S. energy consumption, split almost equally between residential (22%) and commercial (18%) buildings.1 Space heating (31%) and cooling (12%) account for approximately 9 quadrillion Btu. Improvements in the building envelope can have a significant impact on reducing energy consumption. Thermal losses (or gains) from the roof make up 14 percent of the building component energy load. Infiltration through the building envelope, including the roof, accounts for an additional 28 percent of the heating loads and 16 percent of the cooling loads. These figures provide a strong incentive to develop and implement more energy efficient roof systems. The roof is perhaps the most challenging component of the building envelope to change for many reasons. The engineered roof truss, which has been around since 1956, is relatively low cost and is the industry standard. The roof has multiple functions. A typical wood frame home lasts a long time. Building codes vary across the country. Customer and trade acceptance of new building products and materials may impede market penetration. The energy savings of a new roof system must be balanced with other requirements such as first and life-cycle costs, durability, appearance, and ease of construction. Conventional residential roof construction utilizes closely spaced roof trusses supporting a layer of sheathing and roofing materials. Gypsum board is typically attached to the lower chord of the trusses forming the finished ceiling for the occupied space. Often in warmer climates, the HVAC system and ducts are placed in the unconditioned and otherwise unusable attic. High temperature differentials and leaky ducts result in thermal losses. Penetrations through the ceilings are notoriously difficult to seal and lead to moisture and air infiltration. These issues all contribute to greater energy use and have led builders to consider construction of a conditioned attic. The

  5. Integrated solar energy system optimization

    Science.gov (United States)

    Young, S. K.

    1982-11-01

    The computer program SYSOPT, intended as a tool for optimizing the subsystem sizing, performance, and economics of integrated wind and solar energy systems, is presented. The modular structure of the methodology additionally allows simulations when the solar subsystems are combined with conventional technologies, e.g., a utility grid. Hourly energy/mass flow balances are computed for interconnection points, yielding optimized sizing and time-dependent operation of various subsystems. The program requires meteorological data, such as insolation, diurnal and seasonal variations, and wind speed at the hub height of a wind turbine, all of which can be taken from simulations like the TRNSYS program. Examples are provided for optimization of a solar-powered (wind turbine and parabolic trough-Rankine generator) desalinization plant, and a design analysis for a solar powered greenhouse.

  6. Integrated energy systems based on cascade utilization of energy

    Energy Technology Data Exchange (ETDEWEB)

    Jin Hongguang; Gao Lin; Han Wei; Li Bingyu; Feng Zhibing [Chinese Academy of Sciences, Beijing (China). Institute of Engineering Thermophysics

    2007-02-15

    Focusing on the traditional principle of physical energy utilization, new integration concepts for combined cooling, heating and power (CCHP) system were identified, and corresponding systems were investigated. Furthermore, the principle of cascade utilization of both chemical and physical energy in energy systems with the integration of chemical processes and thermal cycles was introduced, along with a general equation describing the interrelationship among energy levels of substance, Gibbs free energy of chemical reaction and physical energy. On the basis of this principle, a polygeneration system for power and liquid fuel (methanol) production has been presented and investigated. This system innovatively integrates a fresh gas preparation subsystem without composition adjustment process (NA) and a methanol synthesis subsystem with partial-recycle scheme (PR). Meanwhile, a multi-functional energy system (MES) that consumes coal and natural gas as fuels simultaneously, and co-generates methanol and power, has been presented. In the MES, coal and natural gas are utilized synthetically based on the method of dual-fuel reforming, which integrates methane/steam reforming and coal combustion. Compared with conventional energy systems that do not consider cascade utilization of chemical energy, both of these systems provide superior performance, whose energy saving ratio can be as high as 10%-15%. With special attention paid to chemical energy utilization, the integration features of these two systems have been revealed, and the important role that the principle of cascade utilization of both chemical and physical energy plays in system integration has been identified.

  7. Research on Energy Conversion System of Floating Wave Energy Converter

    Institute of Scientific and Technical Information of China (English)

    张亚群; 盛松伟; 游亚戈; 吴必军; 刘洋

    2014-01-01

    A wave power device includes an energy harvesting system and a power take-off system. The power take-off system of a floating wave energy device is the key that converts wave energy into other forms. A set of hydraulic power take-off system, which suits for the floating wave energy devices, includes hydraulic system and power generation system. The hydraulic control system uses a special“self-hydraulic control system”to control hydraulic system to release or save energy under the maximum and the minimum pressures. The maximum pressure is enhanced to 23 MPa, the minimum to 9 MPa. Quite a few experiments show that the recent hydraulic system is evidently improved in efficiency and reliability than our previous one, that is expected to be great significant in the research and development of our prototype about wave energy conversion.

  8. Parents of Invention The Development of Library Automation Systems in the Late 20th Century

    CERN Document Server

    Brown-Syed, Christopher

    2011-01-01

    Integrated library systems (ILS) are taken for granted today. Yet it was not so very long ago that programmers spent evenings designing major system components on napkins and scraps of paper. How such systems were developedÑas products of both cooperation and competitionÑtells us much about how they work today.

  9. Status Report on Power System Transformation: A 21st Century Power Partnership Report

    Energy Technology Data Exchange (ETDEWEB)

    Miller, Mackay [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Martinot, Eric [Beijing Inst. of Technology (China); Cox, Sadie [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Speer, Bethany [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Zinaman, Owen [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Booth, Sam [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Zissler, Romain [Japan Renewable Energy Foundation (Japan); Cochran, Jaquelin [National Renewable Energy Laboratory (NREL), Golden, CO (United States); Soonee, S. K. [Power System Operation Corporation, Ltd (India); Audinet, Pierre [World Bank Energy Sector Management Assistance Program, Washington, DC (United States); Munuera, Luis [International Energy Agency, Paris (France); Arent, Doug [Joint Inst. for Strategic Energy Analysis, Washington, DC (United States)

    2015-05-27

    This report has three primary goals: (1) to articulate the concept of power system transformation; (2) to explore the current global landscape of ‘innovations’ that constitute power system transformation and provide evidence of how these innovations are emerging; and (3) to suggest an analytical framework for assessing the status of power system transformation on an on-going basis.

  10. Monitoring the Vulnerability of Energy Supply System

    International Nuclear Information System (INIS)

    Due to the increasing complexity of the world evolution, the public decision makers, the energy supply industry and the consumers in industrialised countries are more and more sensitive to the vulnerability of energy supply. The emergence of new big consumer countries and the perspective of oil and gas depletion at the end of the current century raise the concerns about how to share fairly the remaining resources for the common and sustainable development of the mankind. Erratic energy prices discourage investment and delay the energy transition. Voluntary measures are needed mainly in industrialised countries in order to develop alternative and sustainable energy sources and to avoid world struggle for energy procurement. In this contribution a synthetic energy vulnerability index is defined for monitoring energy supply vulnerability. The proposed index is based on energy intensity, oil and gas import dependency, CO2 content of primary energy supply, electricity supply vulnerability and non-diversity in transport fuels. The preliminary assessment of this synthetic index for selected industrialised countries provides promising results that need however further refinement.(author)

  11. NUCLEAR ENERGY SYSTEM COST MODELING

    Energy Technology Data Exchange (ETDEWEB)

    Francesco Ganda; Brent Dixon

    2012-09-01

    The U.S. Department of Energy’s Fuel Cycle Technologies (FCT) Program is preparing to perform an evaluation of the full range of possible Nuclear Energy Systems (NES) in 2013. These include all practical combinations of fuels and transmuters (reactors and sub-critical systems) in single and multi-tier combinations of burners and breeders with no, partial, and full recycle. As part of this evaluation, Levelized Cost of Electricity at Equilibrium (LCAE) ranges for each representative system will be calculated. To facilitate the cost analyses, the 2009 Advanced Fuel Cycle Cost Basis Report is being amended to provide up-to-date cost data for each step in the fuel cycle, and a new analysis tool, NE-COST, has been developed. This paper explains the innovative “Island” approach used by NE-COST to streamline and simplify the economic analysis effort and provides examples of LCAE costs generated. The Island approach treats each transmuter (or target burner) and the associated fuel cycle facilities as a separate analysis module, allowing reuse of modules that appear frequently in the NES options list. For example, a number of options to be screened will include a once-through uranium oxide (UOX) fueled light water reactor (LWR). The UOX LWR may be standalone, or may be the first stage in a multi-stage system. Using the Island approach, the UOX LWR only needs to be modeled once and the module can then be reused on subsequent fuel cycles. NE-COST models the unit operations and life cycle costs associated with each step of the fuel cycle on each island. This includes three front-end options for supplying feedstock to fuel fabrication (mining/enrichment, reprocessing of used fuel from another island, and/or reprocessing of this island’s used fuel), along with the transmuter and back-end storage/disposal. Results of each island are combined based on the fractional energy generated by each islands in an equilibrium system. The cost analyses use the probability

  12. Energy harvesting solar, wind, and ocean energy conversion systems

    CERN Document Server

    Khaligh, Alireza

    2009-01-01

    Also called energy scavenging, energy harvesting captures, stores, and uses ""clean"" energy sources by employing interfaces, storage devices, and other units. Unlike conventional electric power generation systems, renewable energy harvesting does not use fossil fuels and the generation units can be decentralized, thereby significantly reducing transmission and distribution losses. But advanced technical methods must be developed to increase the efficiency of devices in harvesting energy from environmentally friendly, ""green"" resources and converting them into electrical energy.Recognizing t

  13. INPRO Methodology for Sustainability Assessment of Nuclear Energy Systems: Environmental Impact from Depletion of Resources

    International Nuclear Information System (INIS)

    INPRO is an international project to help ensure that nuclear energy is available to contribute in a sustainable manner to meeting the energy needs of the 21st century. A basic principle of INPRO in the area of environmental impact from depletion of resources is that a nuclear energy system will be capable of contributing to the energy needs in the 21st century while making efficient use of non-renewable resources needed for construction, operation and decommissioning. Recognizing that a national nuclear energy programme in a given country may be based both on indigenous resources and resources purchased from abroad, this publication provides background materials and summarizes the results of international global resource availability studies that could contribute to the corresponding national assessments

  14. Panel report on corrosion in energy systems

    Energy Technology Data Exchange (ETDEWEB)

    None

    1979-06-01

    Corrosion problems in high-temperature (non aqueous) energy systems, corrosion in aqueous energy systems and institutional problems inhibiting the development of corrosion science and engineering are discussed. (FS)

  15. Two sustainable energy system analysis models

    DEFF Research Database (Denmark)

    Lund, Henrik; Goran Krajacic, Neven Duic; da Graca Carvalho, Maria

    2005-01-01

    This paper presents a comparative study of two energy system analysis models both designed with the purpose of analysing electricity systems with a substantial share of fluctuating renewable energy....

  16. Potential of renewable energy systems in China

    DEFF Research Database (Denmark)

    Liu, Wen; Lund, Henrik; Mathiesen, Brian Vad;

    2011-01-01

    this process, assessment of domestic renewable energy sources is the first step. Then appropriate methodologies are needed to perform energy system analyses involving the integration of more sustainable strategies. Denmark may serve as an example of how sustainable strategies can be implemented. The...... energy system. The conclusion is that China’s domestic renewable energy sources are abundant and show the possibility to cover future energy demand; the methodologies used to analyse a 100% renewable energy system are applicable in China. Therefore, proposing an analysis of a 100% renewable energy system...... inappropriate energy consumption structure should be changed. As an alternative, a suitable infrastructure for the implementation of renewable energy may serve as a long-term sustainable solution. The perspective of a 100% renewable energy system has been analyzed and discussed in some countries previously. In...

  17. Energy systems Diagnosis in developing countries

    International Nuclear Information System (INIS)

    Energy systems diagnosis is necessary to allow evaluation of energy balance by administration and political authorities of a country. First, the author describes the principle stages of energetic diagnosis. Then this work is divided into three parts: First part: Energy consumption diagnosis in several districts (families, utilities, agriculture, transport, industry) Second part: Energy supplies diagnosis (energy markets). Third part: Interactions between energy consumption and energy supply. 28 figs.; 52 tabs.; 107 refs

  18. Career Directions--Renewable Energy Systems Integrator

    Science.gov (United States)

    Fleeman, Stephen R.

    2012-01-01

    Renewable energy systems are beginning to appear everywhere. Solar modules are creating "blue roofs" that convert the energy from the sun into household electricity. Solar thermal systems on roofs can generate hot water. Wind turbines catch breezes to provide even more electricity. Recommendations for saving energy, specifying systems for…

  19. College and University Earth System Science Education for the 21st Century (ESSE 21)

    Science.gov (United States)

    Johnson, D. R.; Ruzek, M.; Schweizer, D.

    2002-12-01

    The NASA/USRA Cooperative University-based Program in Earth System Science Education (ESSE), initiated over a decade ago through NASA support, has led in the creation of a nationwide collaborative effort to bring Earth system science into the undergraduate classroom. Forty-five ESSE institutions now offer over 120 Earth system courses each year, reaching thousands of students annually with interdisciplinary content. Through the course offerings by faculty from different disciplines and the organizational infrastructure of colleges and universities emphasizing cross disciplinary curricula, programs, degrees and departments, the ESSE Program has led in systemic change in the offering of a holistic view of Earth system science in the classroom. Building on this successful experience and collaborative infrastructure within and among colleges, universities and NASA partners, an expanded program called ESSE 21 is being supported by NASA to extend the legacy established during the last decade. Through its expanded focus including partnerships with under represented colleges and universities, the Program seeks to further develop broadly based educational resources, including shared courses, electronic learning materials and degree programs that will extend Earth system science concepts in both undergraduate and graduate classrooms and laboratories. These resources emphasizing fundamentals of Earth system science advance the nation's broader agenda for improving science, technology, engineering and mathematics competency. Overall the thrust within the classrooms of colleges and universities is critical to extending and solidifying courses of study in Earth system and global change science. ESSE 21 solicits proposals from undergraduate institutions to create or adopt undergraduate and graduate level Earth system science content in courses, curricula and degree programs. The goal for all is to effect systemic change through developing Earth system science learning materials

  20. An Application of the Market-Oriented Programming to Energy Trading Decision Method in Distributed Energy Management Systems

    Science.gov (United States)

    Yakire, Koji; Miyamoto, Toshiyuki; Kumagai, Sadatoshi; Mori, Kazuyuki; Kitamura, Shoichi; Yamamoto, Takaya

    A control of CO2 emissions which is the main factor of global warming is one of the most important problems in the 21st century about preservation of earth environment. Therefore, efficient supply and use of energy are indispensable. We have proposed distributed energy management systems (DEMSs), where we are to obtain optimal plans that minimize both of costs and CO2 emissions through electrical and thermal energy trading. A DEMS consists of the plural entities that seek their own economic profits. In this paper, we propose a trading method that gives competitive equilibrium resource distribution by applying the market-oriented programming (MOP) to DEMSs.

  1. Advanced plant maintenance and surveillance system for the nuclear power plants of the next century

    International Nuclear Information System (INIS)

    The traditional approach to nuclear power plant maintenance and surveillance employs a preventive maintenance philosophy that can result in excessive labor being expended and in unnecessary and potentially damaging testing being performed. Plant downtime may also be increased and availability reduced because of the large number of critical tasks that need to be accomplished during a maintenance outage. In addition, modern control equipment is increasingly computerized and software-driven, and thus is not readily accessible or understandable to an operator using conventional surveillance techniques. The proposed advanced approach uses a diagnostic system based on the advanced and still emerging technologies of neural networks and fuzzy expert systems. This system monitors operating conditions of control equipment in real time and also monitors past performance based on maintenance records and equipment specifications entered into a computerized database. Plant system availability can be enhanced and maintenance costs can be reduced by automatically adjusting surveillance periods and maintenance schedules to actual trends in equipment performance. Equipment in multiple redundant instrument channels may need calibration and testing at different times to maintain a system in an optimal state of readiness. Moreover, redundant systems generally use the same type of equipment in the separate channels. Manufacturing defects, wear-out effects, or changes in environmental conditions may result in common-cause failures over a short period of time, thus degrading the protection capability of the safety systems. Normal surveillance may not uncover many of these incipient equipment failures, but a neural-fuzzy expert system that continuously oversees the complex relationships of operating parameters among system equipment can rapidly discern deviations from normal behavior and make maintenance recommendations, including replace-or-repair decisions

  2. For Nature: Deep Greening World-Systems Analysis for the 21st Century

    Directory of Open Access Journals (Sweden)

    Sing S. Chew

    2015-08-01

    Full Text Available From its conception the world-systems perspective has been preoccupied with the study of long term global transformations (see for ex., Frank 1968, 1979; Wallerstein 1974; Amin 1974; Wolf, 1982; Chase-Dunn 1989; Chase-Dunn and Hall 1992; Kaplan 1978.2. To this extent, the various structural relationships, trends, and cycles of the world system have been identified to explain the processes of global transformation. The varied attempts to pinpoint and analyze these relations, trends, and cycles have been within the context of connections between humans, classes, status groups, industries, regions, and states in the world economy. From an ecological point of view (ontologically and epistemologically, such a manner of understanding change is quite anthropocentric, as global transformation necessitates a changing relationship with Nature. In an era of increasing global concern and awareness of the finite nature of natural resources and the growing realization of the contemporary losses in plant and animal species and the continued susceptibility of the human species to climatological changes and diseases despite various scientific and technological advances, we need to consider that besides social relations and structures, the basis of human reproduction includes our relationships with the non-human world (ecology. World-systems /world system analyses need to move beyond deciphering the processes of global change only through the social (anthropocentric dimension of the relations underlining these processes. Keeping to just the social relations/structures of the reproduction of the system limits the range of explanations we can provide for global transformation, and also restricts the dimensions whereby the basis for these changes can be explored. This paper is an attempt to introduce the other basic dimension (our relations with Nature into the overall equation of world-systems/world system analyses for our understanding of global change. Ultimately

  3. Market Evolution: Wholesale Electricity Market Design for 21st Century Power Systems

    Energy Technology Data Exchange (ETDEWEB)

    Cochran, Jaquelin [National Renewable Energy Lab. (NREL), Golden, CO (United States); Miller, Mackay [National Renewable Energy Lab. (NREL), Golden, CO (United States); Milligan, Michael [National Renewable Energy Lab. (NREL), Golden, CO (United States); Ela, Erik [National Renewable Energy Lab. (NREL), Golden, CO (United States); Arent, Douglas [National Renewable Energy Lab. (NREL), Golden, CO (United States); Bloom, Aaron [National Renewable Energy Lab. (NREL), Golden, CO (United States); Futch, Matthew [IBM, Northcastle, NY (United States); Kiviluoma, Juha [VTT Technical Research Centre of Finland, Espo (Finland); Holtinnen, Hannele [VTT Technical Research Centre of Finland, Espo (Finland); Orths, Antje [Energinet.dk (Denmark); Gomez-Lazaro, Emilio [University of Castilla-La Mancha, Real (Spain); Martin-Martinez, Sergio [University of Castilla-La Mancha, Real (Spain); Kukoda, S. [International Copper Association, New York, NY (United States); Garcia, Glycon [International Copper Association, New York, NY (United States); Mikkelsen, Kim M. [Global Green Growth Inst., Seoul (Korea); Yongqiang, Zhao [China National Renewable Energy Center, Beijing (China); Sandholt, Kaare [China National Renewable Energy Center, Beijing (China)

    2013-10-01

    Demand for affordable, reliable, domestically sourced, and low-carbon electricity is on the rise. This growing demand is driven in part by evolving public policy priorities, especially reducing the health and environmental impacts of electricity service and expanding energy access to under-served customers. Consequently, variable renewable energy resources comprise an increasing share ofelectricity generation globally. At the same time, new opportunities for addressing the variability of renewables are being strengthened through advances in smart grids, communications, and technologies that enable dispatchable demand response and distributed generation to extend to the mass market. A key challenge of merging these opportunities is market design -- determining how to createincentives and compensate providers justly for attributes and performance that ensure a reliable and secure grid -- in a context that fully realizes the potential of a broad array of sources of flexibility in both the wholesale power and retail markets. This report reviews the suite of wholesale power market designs in use and under consideration to ensure adequacy, security, and flexibilityin a landscape of significant variable renewable energy. It also examines considerations needed to ensure that wholesale market designs are inclusive of emerging technologies, such as demand response, distributed generation, and storage.

  4. Studying the Indian Ocean Ridge System: Agenda for the new century

    Digital Repository Service at National Institute of Oceanography (India)

    Mukhopadhyay, R.; Iyer, S.D.; Banerjee, R.; Drolia, R.K.

    Studies on the Indian Ocean Ridge System, though sporadic, was aimed to map the complete IORS petrologically and tectonically. Three areas are placed for immediate investigation; one in the slow spreading Carlsberg Ridge area, the second, along...

  5. Quantitative determinations and imaging in different structures of buried human bones from the XVIII-XIXth centuries by energy dispersive X-ray fluorescence - Postmortem evaluation.

    Science.gov (United States)

    Guimarães, D; Dias, A A; Carvalho, M; Carvalho, M L; Santos, J P; Henriques, F R; Curate, F; Pessanha, S

    2016-08-01

    In this work, a non-commercial triaxial geometry energy dispersive X-ray Fluorescence (EDXRF) setup and a benchtop µ-XRF system were used to identify postmortem contamination in buried bones. For two of the individuals, unusually high concentrations of Cu and Pb, but also Zn (in one individual) were observed. The pigments of the burial shroud coverings have been identified as the source of contamination. Accurate and precise quantitative results were obtained by nondestructive process using fundamental parameters method taking into account the matrix absorption effects. A total of 30 bones from 13 individuals, buried between the mid-XVIIIth to early XIXth centuries, were analyzed to study the elemental composition and elemental distribution. The bones were collected from a church in Almada (Portugal), called Ermida do Espírito Santo, located near the Tagus River and at the sea neighbourhood. The triaxial geometry setup was used to quantify Ca, Fe, Cu, Zn, Br, Sr and Pb of powder pressed bone pellets (n=9 for each bone). Cluster analysis was performed considering the elemental concentrations for the different bones. There was a clear association between some bones regarding Fe, Cu, Zn, Br and Pb content but not a categorization between cortical and trabecular bones. The elemental distribution of Cu, Zn and Pb were assessed by the benchtop μ-analysis, the M4 Tornado, based on a polycapillary system which provides multi-elemental 2D maps. The results showed that contamination was mostly on the surface of the bone confirming that it was related to the burial shroud covering the individuals. PMID:27216663

  6. “The dangerous classes”: Hugo Grotius and seventeenth-century piracy as a primitive anti-systemic movement

    Directory of Open Access Journals (Sweden)

    Eric Wilson

    2010-11-01

    Full Text Available This essay discusses the historical and textual representations of piracy in the writings of Hugo Grotius, primarily De Indis/De iure praedae(1603-1608 and the Commentarius in Theses XI (c. 1600. Contrary to popular belief, Grotius, in stark contrast to Jean Bodin, was not an advocate of the constitutionally homogenous Nation-State. Rather, his central concept of divisible sovereignty, the lynchpin of the constitutional theory of his early writings, unambiguously presents us with the object of the heterogeneousState. In Grotian theory, the State may be “read” as a composite construction, with a residual degree of inalienable sovereignty accruing at each unit-level. Even if only unconsciously, Grotius describes a concurrent para-political sub-division of the state between institutional Government (the “magistrates”and civil society, one that constitutes an operational system of governance within the Nation-State. Like his contemporary Johannes Althusius, Grotius’theory allows for the emergence of a wholly “private,” albeit lawful, mode of authority. This is most apparent in Grotius’ treatment of the mercantile trading Company and its Privateering operations. The corporatist theory of sovereignty permits the Company’s private agents of violence, the legally ambivalent Privateer/Pirate, to be invested with a requisite degree of sovereignty. The Grotian theory of divisible sovereignty, investing the seventeenth-century Pirate band with legal personality, serves as a vital historical precursor to the quasi-statist (trans- national criminal cartels of the twenty-first century. The Grotian Pirate/Privateer/Just Avenger, therefore, is a “nomad”: a liminal entity that simultaneously transverses both geographical and juro-political spaces, rendering him or herselfin-determinable.

  7. SMES for wind energy systems

    Science.gov (United States)

    Paul Antony, Anish

    simulation results the utility of SMES in voltage sag mitigation for momentary interruptions. The 1MJ SMES mitigates voltage sags for a useful duration ~50 seconds. In conclusion (Chapter 7), we believe that in this dissertation, we have documented the design of SMES for both momentary and sustained interruptions in wind turbines. We have put forth some novel and relevant hypotheses, developed and performed suitable simulation studies to validate these hypotheses. By doing so, we have been able to expand our knowledge in our quest to grasp the underlying mechanisms of storage systems in wind energy integration. Although the resulting analysis has allowed us to gain valuable insight, we feel that it is only the tip of the iceberg, and that many yet unknown discoveries are to be made. We remain hopeful that the future of SMES for wind energy will only look brighter from here onward. (Abstract shortened by UMI.).

  8. Energy aware paradigm for energy efficient ICT: a systemic approach

    OpenAIRE

    Ricciardi, Sergio; Careglio, Davide; Santos Boada, Germán; Solé Pareta, Josep

    2010-01-01

    In this work we describe the Energy Aware Paradigm we believe should be adopted for successfully designing and deploying energy efficient ICT (Information and Communication Technologies) based systems. Peer Reviewed

  9. CATALYTIC RESEARCH FOR CLEAN ENERGY AND ULTRA-CLEAN FUELS IN THE 21st CENTURY--Future Perspectives%21世纪清洁能源与超清洁燃料催化研究的展望

    Institute of Scientific and Technical Information of China (English)

    宋春山

    2002-01-01

    The global growth in energy consumption in the 20th century and the situations around the energy supply and demand of energy and fuels are briefly discussed. Future perspectives in terms of needs and opportunities for catalytic research in the area of energy and resources are presented, with emphasis placed on the clean energy and the clean transportation fuels in the early parts of the 21st century. More environmentally-friendly, comprehensive and efficient utilization of energy sources is emphasized as a direction for future catalytic research.

  10. Pulsed Energy Storage System Design

    Energy Technology Data Exchange (ETDEWEB)

    Biallis, G.; Cassel, R.L.; Fowler, W.; Livdahl, P.V.; Mills, F.E.; Palmer, M.L.; Reardon, P.J.; Snowden, S.C.; Strauss, B.P.; Teng, L.C.; Winje, R.A.; /Fermilab /Wisconsin U., Madison

    1974-07-01

    A superconductive energy storage magnet which is connected to the three phase power system could be designed, constructed, and placed in operation at Fermilab which would essentially eliminate the large repetitive power pulses now required from the power system. In addition to the power pulses, voltage flicker is also caused due to the reactive power pulsation. Specifically, a one megawatt hour superconductive energy storage magnet and a 2.00 megawatt thyristorized converter can achieve nullification of these power pulses up to 400 GEV synchrotron operation. Above 400 GEV, operation should be possible up to 500 GEV with appreciable less power pulsing requirements from the system than are now considered permissible. Carried to successful completion, this project would serve to advance applied superconductivity to a highly significant degree. The effect would be of world wide importance to both high energy physics and to the electric power industry. The preliminary magnet design is a 1 MWh dipole composed of cryogenically stable composite conductors connected in parallel with aluminum shield windings. The shield windings carry impressed pulsed currents while eliminating pulsed currents from the dc superconductive windings. Without pulsed currents or pulsed magnetic fields there are no ac losses in standard helium. The major radius of the dipole is 8.85 m; the minor radius is 0.69m; there are 188 turns at 80,000 A and each turn is 4 conductors wound in parallel. The 20,000 A TiNb-copper composite conductor is l0x 1.12 cm in cross section similar to but larger than the FNAL bubble chamber conductor. The shield is 188 turns (equal number of turns is a shielding condition) of hollow aluminum conductor cooled via circulated cold helium gas at 40K. The turns are spaced around the minor circumference according to a cosine distribution which produces zero internal field. In use the shield loss converted to room temperature power is about .8MW when 0.1 MWh is used from a 1

  11. Pole-vaulting program of the energy sector: the Philippines: an energy exporter: a program for pole-vaulting into the 21-st century

    International Nuclear Information System (INIS)

    Focus on ocean, solar and wind energy resources is emphasized in the proposed program as the means to achieve the goal of converting the Philippines into an energy exporter in the future. A nationwide assessment of the availability of these renewable resources for large-scale energy generation is first in the series of activities proposed. Establishment of a renewable energy resource administration system expected to open up wide opportunities for private sector participation. A center for renewable energy development and application is envisioned to provide leadership and technical guidance. Short-term targets include: a) establishment of solar manufacturing plants in the country; b) extensive application of solar energy systems such as solar water heaters, solar pumps and solar refrigerators; c) piloting of one megawatt tidal current plant in an appropriate site such as in San Bernardino Strait, Hinatuan Passage and Basiao Channel; and d) design and packaging of power plants for specific areas identified through accurate resource assessment. Long-term targets include: a) establishment of an Asian power grid; b) establishment of an Asian power market centered in the Philippines; c) construction of large-scale ocean, solar and wind power plants; and d) establishment of manufacturing industries for various facets of ocean, solar and wind power systems. Development of ocean, solar and wind energy systems would provide the Philippines the technological and economic advantage to approach the goal of becoming an energy exporter in the future. If the pole-vaulting program is seriously pursued from now, the Philippines would have the superiority in energy technology and resource availability twenty years hence when neighboring countries would start feeling the problem of dwindling fossil fuels that they have in abundance at present. (author)

  12. Fusion in the energy system

    OpenAIRE

    Grohnheit, Poul Erik

    2009-01-01

    Fusion energy is the fundamental energy source of the Universe, as the energy of the Sun and the stars are produced by fusion of e.g. hydrogen to helium. Fusion energy research is a strongly international endeavor aiming at realizing fusion energy production in power plants on Earth. Reaching this goal, mankind will have a sustainable base load energy source with abundant resources, having no CO2 release, and with no longlived radioactive waste. This presentation will describe the basics of f...

  13. Hybrid Energy System Modeling in Modelica

    Energy Technology Data Exchange (ETDEWEB)

    William R. Binder; Christiaan J. J. Paredis; Humberto E. Garcia

    2014-03-01

    In this paper, a Hybrid Energy System (HES) configuration is modeled in Modelica. Hybrid Energy Systems (HES) have as their defining characteristic the use of one or more energy inputs, combined with the potential for multiple energy outputs. Compared to traditional energy systems, HES provide additional operational flexibility so that high variability in both energy production and consumption levels can be absorbed more effectively. This is particularly important when including renewable energy sources, whose output levels are inherently variable, determined by nature. The specific HES configuration modeled in this paper include two energy inputs: a nuclear plant, and a series of wind turbines. In addition, the system produces two energy outputs: electricity and synthetic fuel. The models are verified through simulations of the individual components, and the system as a whole. The simulations are performed for a range of component sizes, operating conditions, and control schemes.

  14. Engineered Geothermal Systems Energy Return On Energy Investment

    Energy Technology Data Exchange (ETDEWEB)

    Mansure, A J

    2012-12-10

    Energy Return On Investment (EROI) is an important figure of merit for assessing the viability of energy alternatives. Too often comparisons of energy systems use efficiency when EROI would be more appropriate. For geothermal electric power generation, EROI is determined by the electricity delivered to the consumer compared to the energy consumed to construct, operate, and decommission the facility. Critical factors in determining the EROI of Engineered Geothermal Systems (EGS) are examined in this work. These include the input energy embodied into the system. Embodied energy includes the energy contained in the materials, as well as, that consumed in each stage of manufacturing from mining the raw materials to assembling the finished system. Also critical are the system boundaries and value of the energy heat is not as valuable as electrical energy. The EROI of an EGS depends upon a number of factors that are currently unknown, for example what will be typical EGS well productivity, as well as, reservoir depth, temperature, and temperature decline rate. Thus the approach developed is to consider these factors as parameters determining EROI as a function of number of wells needed. Since the energy needed to construct a geothermal well is a function of depth, results are provided as a function of well depth. Parametric determination of EGS EROI is calculated using existing information on EGS and US Department of Energy (DOE) targets and is compared to the minimum EROI an energy production system should have to be an asset rather than a liability.

  15. Power Systems of the Future: A 21st Century Power Partnership Thought Leadership Report

    Energy Technology Data Exchange (ETDEWEB)

    Zinaman, O.; Miller, M.; Adil, A.; Arent, D.; Cochran, J.; Vora, R.; Aggarwal, S.; Bipath, M.; Linvill, C.; David, A.; Kauffman, R.; Futch, M.; Villanueva Arcos, E.; Valenzuela, J. M.; Martinot, E.; Bazilian, M.; Pillai, R. K.

    2015-02-01

    This report summarizes key forces driving transformation in the power sector around the world, presents a framework for evaluating decisions regarding extent and pace of change, and defines pathways for transformation. Powerful trends in technology, policy environments, financing, and business models are driving change in power sectors globally. In light of these trends, the question is no longer whether power systems will be transformed, but rather how these transformations will occur. Three approaches to policy and technology decision-making can guide these transformations: adaptive, reconstructive, and evolutionary. Within these approaches, we explore the five pathways that have emerged as viable models for power system transformation.

  16. Distributed Energy Systems with Wind Power and Energy Storage

    OpenAIRE

    Korpås, Magnus

    2004-01-01

    The topic of this thesis is the study of energy storage systems operating with wind power plants. The motivation for applying energy storage in this context is that wind power generation is intermittent and generally difficult to predict, and that good wind energy resources are often found in areas with limited grid capacity. Moreover, energy storage in the form of hydrogen makes it possible to provide clean fuel for transportation. The aim of this work has been to evaluate how local energy s...

  17. Changing Configuration of Alternative Energy Systems

    OpenAIRE

    Bhuyan, Radhika; Mytelka, Lynn K.

    2008-01-01

    Recent and rampant regulatory changes for sustainable development are seeking to transform current energy systems towards cleaner and greener forms of energy sources. In this scenario, alternative energy technologies are considered the building blocks towards this transformed energy system. This chapter will show how the alternative energy market since the 1970s changed, in response to external oil price shocks and to other selective pressures and institutions. It will observe that the config...

  18. Exergy Analysis of Complex Ship Energy Systems

    OpenAIRE

    Pierre Marty; Jean-François Hétet; David Chalet; Philippe Corrignan

    2016-01-01

    With multiple primary and secondary energy converters (diesel engines, steam turbines, waste heat recovery (WHR) and oil-fired boilers, etc.) and extensive energy networks (steam, cooling water, exhaust gases, etc.), ships may be considered as complex energy systems. Understanding and optimizing such systems requires advanced holistic energy modeling. This modeling can be done in two ways: The simpler approach focuses on energy flows, and has already been tested, approved and presented; a new...

  19. Energy Systems Modelling Research and Analysis

    DEFF Research Database (Denmark)

    Møller Andersen, Frits; Alberg Østergaard, Poul

    2015-01-01

    This editorial introduces the seventh volume of the International Journal of Sustainable Energy Planning and Management. The volume presents part of the outcome of the project Energy Systems Modelling Research and Analysis (ENSYMORA) funded by the Danish Innovation Fund. The project carried out...... by 11 university and industry partners has improved the basis for decision-making within energy planning and energy scenario making by providing new and improved tools and methods for energy systems analyses....

  20. Info Base of the Croatian Agricultural System at the Beginning of the 21st Century

    Directory of Open Access Journals (Sweden)

    Vitomir Grbavac

    1999-06-01

    Special attention is paid to reasons of broughting up new strategies of Croatian agricultural system development which would handle its info base on a systematical way. The attention is also paid to educational aspects in the Croatian agricultural domain in this historic transitional period.

  1. Toward a 21st-century health care system: Recommendations for health care reform

    NARCIS (Netherlands)

    K. Arrow (Kenneth); A. Auerbach (Alan); J. Bertko (John); L.P. Casalino (Lawrence Peter); F.J. Crosson (Francis); A. Enthoven (Alain); E. Falcone; R.C. Feldman; V.R. Fuchs (Victor); A.M. Garber (Alan); M.R. Gold (Marthe Rachel); D.A. Goldman; G.K. Hadfield (Gillian); M.A. Hall (Mark Ann); R.I. Horwitz (Ralph); M. Hooven; P.D. Jacobson (Peter); T.S. Jost (Timothy Stoltzfus); L.J. Kotlikoff; J. Levin (Jonathan); S. Levine (Sharon); R. Levy; K. Linscott; H.S. Luft; R. Mashal; D. McFadden (Daniel); D. Mechanic (David); D. Meltzer (David); J.P. Newhouse (Joseph); R.G. Noll (Roger); J.B. Pietzsch (Jan Benjamin); P. Pizzo (Philip); R.D. Reischauer (Robert); S. Rosenbaum (Sara); W. Sage (William); L.D. Schaeffer (Leonard Daniel); E. Sheen; B.N. Silber (Bernie Michael); J. Skinner (Jonathan Robert); S.M. Shortell (Stephen); S.O. Thier (Samuel); S. Tunis (Sean); L. Wulsin Jr.; P. Yock (Paul); G.B. Nun; S. Bryan (Stirling); O. Luxenburg (Osnat); W.P.M.M. van de Ven (Wynand); J. Cooper (Jim)

    2009-01-01

    textabstractThe coverage, cost, and quality problems of the U.S. health care system are evident. Sustainable health care reform must go beyond financing expanded access to care to substantially changing the organization and delivery of care. The FRESH-Thinking Project (www.fresh-thinking.org) held a

  2. Short review on solar energy systems

    Science.gov (United States)

    Herez, Amal; Ramadan, Mohamad; Abdulhay, Bakri; Khaled, Mahmoud

    2016-07-01

    Solar energy can be utilized mainly in heat generation and electricity production. International energy agency (IEA) shows, in a comparative study on the world energy consumption that in 2050 solar arrays installation will provide about 45% of world energy demand. Solar energy is one of the most important renewable energy source which plays a great role in providing energy solutions. As known there is wide variety of types of collectors and applications of solar energy. This paper aimed to make a short review on solar energy systems, according to types of collectors and applications used.

  3. New Systems for the Realization of a Comfortable and Prosperous Society in the 21st Century

    Science.gov (United States)

    Hara, G.

    In the wake of the Great Northern Japan Earthquake and Tsunami, the Japanese people have impressed the world with their strong spirit of cooperation and optimism in the midst of crisis. Japan is now poised to lead the world toward a new economic paradigm and into the age of Public Interest Capitalism which can replace short-termism and shareholder centric capitalism. As the legacy economic and social systems that have dominated advanced countries reach a critical juncture, Japan now stands at the crux of a great opportunity. In the past, Japan's success was driven by the skillful exportation of ``Hard'' (manufactured goods) and ``Soft'' (entertainment/culture) products. In the coming era, the key to Japan's success lies with our ability to leverage our inherent values and disseminate new economic and social systems that trigger innovation, create new industries, and promote a more comfortable, balanced, and sustainable form of global development.

  4. The energy challenges in the 21. century according to the World Energy Council (WEC); Les defis de l'energie au 21. siecle selon le Conseil mondial de l'energie (CME)

    Energy Technology Data Exchange (ETDEWEB)

    Ailleret, F. [World Energy Council, Vienna (Austria)

    2000-12-01

    The World Energy Council (WEC) published a study in 1993 concerning energy for the future. The predictions made at that time are still valid, and the decision was made to complete the document by explaining the lines of action to be followed for the future. The time frame selected was 2020, with a larger horizon extending to the first half of the century. Some assumptions were modified. The first one concerned the expected world population in 2020. It is now expected to reach 8 billion in 2050 versus the 10 billion previously predicted, with the bulk of the increases being felt in urban areas. Economic growth was slower than expected during the past ten years and is now expected to continue at 3 per cent expansion per annum, with increasing inequities between North and South in developed countries. The protection of the environment is gaining momentum, from local concerns such as air pollution and the control of urban, industrial, and agricultural pollution, to regional concerns like acid rains to global concerns about climate changes. The WEC elaborated on the energy challenges by grouping them into three categories: accessibility, availability, and acceptability. Accessibility means supplying an additional 2 billion people with commercial energy in the world by 2020. All energy resources will be called upon. It also represents an economic challenge. Availability is concerned with continuity and quality of the energy supplied. Once again, all resources will be required, with necessary diversification of sources and supply lines. Renewable energies might be part of the solution, but the costs inherent to their exploitation imposes constraints. Acceptability is related to the use of certain technologies for the production of energy, like nuclear technology for the production of electricity. In the case of fossil fuels, natural gas is the number one choice for a number of applications. Individual transportation needs will continue to rely primarily on petroleum. Coal

  5. Toward a 21st-century health care system: Recommendations for health care reform

    OpenAIRE

    Arrow, Kenneth; Auerbach, Alan; Bertko, John; Casalino, Lawrence Peter; Crosson, Francis; Enthoven, Alain; Falcone, E.; Feldman, R.C.; Fuchs, Victor; Garber, Alan; Gold, Marthe Rachel; Goldman, D A; Hadfield, Gillian; Hall, Mark Ann; Horwitz, Ralph

    2009-01-01

    textabstractThe coverage, cost, and quality problems of the U.S. health care system are evident. Sustainable health care reform must go beyond financing expanded access to care to substantially changing the organization and delivery of care. The FRESH-Thinking Project (www.fresh-thinking.org) held a series of workshops during which physicians, health policy experts, health insurance executives, business leaders, hospital administrators, economists, and others who represent diverse perspective...

  6. Toward a 21st Century Quality-Measurement System for Managed-Care Organizations

    OpenAIRE

    Armstead, Rodney C.; Elstein, Paul; Gorman, John

    1995-01-01

    As the Nation's largest managed-care purchaser, the Health Care Financing Administration (HCFA) is working to develop a uniform data and performance-measurement system for all enrollees in managed-care plans. This effort will ultimately hold managed-care plans accountable for continuous improvement in the quality of care they provide and will provide information to consumers and purchasers to make responsible managed-care choices. The effort entails overhauling peer review organization (PRO) ...

  7. HPC-GAP : engineering a 21st-century High-Performance Computer algebra system

    OpenAIRE

    Behrends, Reimer; Hammond, Kevin; Janjic, Vladimir; Konovalov, Alexander; Linton, Stephen Alexander; Loidl, Hans-Wolfgang; Maier, Patrick; Trinder, Philip

    2016-01-01

    Symbolic computation has underpinned a number of key advances in Mathematics and Computer Science. Applications are typically large and potentially highly parallel, making them good candidates for parallel execution at a variety of scales from multi-core to high-performance computing systems. However, much existing work on parallel computing is based around numeric rather than symbolic computations. In particular, symbolic computing presents particular problems in terms of varying granularity...

  8. HPC-GAP: engineering a 21st-century high-performance computer algebra system

    OpenAIRE

    Behrends, Reimer; Hammond, Kevin; Janjic, Vladimir; Konovalov, Alexander; Linton, Steve; Loidl, Hans-Wolfgang; Maier, Patrick; Trinder, Phil

    2015-01-01

    Symbolic computation has underpinned a number of key advances in Mathematics and Computer Science. Applications are typically large and potentially highly parallel, making them good candidates for parallel execution at a variety of scales from multi-core to high-performance computing systems. However, much existing work on parallel computing is based around numeric rather than symbolic computations. In particular, symbolic computing presents particular problems in terms of varying granularity...

  9. Energy and the food system

    OpenAIRE

    Woods, Jeremy; Williams, Adrian; Hughes, John K.; Black, Mairi; Murphy, Richard

    2010-01-01

    Modern agriculture is heavily dependent on fossil resources. Both direct energy use for crop management and indirect energy use for fertilizers, pesticides and machinery production have contributed to the major increases in food production seen since the 1960s. However, the relationship between energy inputs and yields is not linear. Low-energy inputs can lead to lower yields and perversely to higher energy demands per tonne of harvested product. At the other extreme, increa...

  10. A sustainable energy-system in Latvia

    DEFF Research Database (Denmark)

    Rasmussen, Lotte Holmberg

    2003-01-01

    negative trade-balance. With this in mind, it is important that Latvia is able to meet the challenge and use the economic development to develop a sustainable energy-system and a sounder trade-balance. A combination of energy planning, national economy and innovation processes in boiler companies will form......The paper presents some of the problems in the Latvian energy-system, the Latvian economy and how a sustainable restructuring of the energy system with renewable energy, co-generation and the production of energy technology can help solve some of the problems. Latvia has economic growth but a...

  11. Energy technology sources, systems and frontier conversion

    CERN Document Server

    Ohta, Tokio

    2012-01-01

    This book provides a concise and technical overview of energy technology: the sources of energy, energy systems and frontier conversion. As well as serving as a basic reference book for professional scientists and students of energy, it is intended for scientists and policy makers in other disciplines (including practising engineers, biologists, physicists, economists and managers in energy related industries) who need an up-to-date and authoritative guide to the field of energy technology.Energy systems and their elemental technologies are introduced and evaluated from the view point

  12. Electric vehicle energy management system

    Science.gov (United States)

    Alaoui, Chakib

    This thesis investigates and analyzes novel strategies for the optimum energy management of electric vehicles (EVs). These are aimed to maximize the useful life of the EV batteries and make the EV more practical in order to increase its acceptability to market. The first strategy concerns the right choice of the batteries for the EV according to the user's driving habits, which may vary. Tests conducted at the University of Massachusetts Lowell battery lab show that the batteries perform differently from one manufacturer to the other. The second strategy was to investigate the fast chargeability of different batteries, which leads to reduce the time needed to recharge the EV battery pack. Tests were conducted again to prove that only few battery types could be fast charged. Test data were used to design a fast battery charger that could be installed in an EV charging station. The third strategy was the design, fabrication and application of an Electric Vehicle Diagnostic and Rejuvenation System (EVDRS). This system is based on Mosfet Controlled Thyristors (MCTs). It is capable of quickly identifying any failing battery(s) within the EV pack and rejuvenating the whole battery pack without dismantling them and unloading them. A novel algorithm to rejuvenate Electric Vehicle Sealed Lead Acid Batteries is described. This rejuvenation extends the useful life of the batteries and makes the EV more competitive. The fourth strategy was to design a thermal management system for EV, which is crucial to the safe operation, and the achievement of normal/optimal performance of, electric vehicle (EV) batteries. A novel approach for EV thermal management, based on Pettier-Effect heat pumps, was designed, fabricated and tested in EV. It shows the application of this type of technology for thermal management of EVs.

  13. User requirements and approaches of development for future nuclear energy system

    International Nuclear Information System (INIS)

    Technology innovation is one of the key issues in every field for the future of the technology. In early 21st century, international nuclear society has a common recognition on the necessity of innovative nuclear energy system to cope with new trend and increasing energy demand, several international programs were initiated for development of new systems that secure stable energy supply and have improved public acceptance, safety, and cost-effectiveness. This paper surveyed status of international activities on future innovative nuclear energy systems, and describes the user requirements of future nuclear energy system for the deployment in the future. The approaches to development of the innovative nuclear energy technologies for meeting future goals were discussed

  14. The 21st century system reform and development mode of construction management education (CME) in China

    Institute of Scientific and Technical Information of China (English)

    YE Xiao-su; WU Shu-xia

    2004-01-01

    With China's entry into WTO and the development of the economic globalization, market competition in the construction field is more and more featured by the competition of talents, the core of which is the cultivation mechanism innovation of higher construction management talents. The approach to meet the requirement of this situation is to adopt innovation ideas, improve the supply-demand structure of CME, reform the education system to relate theory to practice, pay attention to the needs of the educated, enhance global communication and cooperation, and improve the knowledge structure of teachers.

  15. Science Education and the Challenges Facing Its Integration into the 21st Century School System in a Globalized World: A Case of Igbo Nation

    Science.gov (United States)

    Ezeudu, F. O.; Nkokelonye, C. U.; Ezeudu, S. A.

    2013-01-01

    This paper is a study of historical foundations of science education in Igboland, its nature and scope as well as the challenges facing its integration into the 21st century school system in a globalized world. The authors found that there were many scientific activities in Igbo culture, but many problems hinder their integration into the basic…

  16. Analysis of Photovoltaic Concentrating Solar Energy Systems

    Directory of Open Access Journals (Sweden)

    Garo Pilawjian

    2012-03-01

    Full Text Available In this paper the photovoltaic concentrating solar energy systems are analyzed. Both the Fresnel lens light refraction and mirror light reflection concentrating optical systems are considered. The main parameters and properties of photovoltaic concentrating solar energy systems are outlined. It is shown that the multi-parameter cost optimization is necessary to conduct to reduce the cost of photovoltaic concentrating solar energy systems.

  17. Models of Energy Saving Systems

    DEFF Research Database (Denmark)

    Nørgård, Jørgen Stig

    1999-01-01

    The paper first describes the concepts and methods around energy saving, such as energy chain, energy services, end-use technologies, secondary energy, etc. Next are discussed the problems of defining and adding energy services and hence end-use energy efficiency or intensity. A section is devoted...... to what is termed lifestyle efficiency, including the cultural values and the ability of the economy to provide the services wanted. As explained, integrated resource planning with its optimizing the whole energy chain cannot be combined with sub-optimizing part of it, for instance the supply...... technology only. The need for including also the economic policy in the energy planning is illustrated with what is termed the efficiency pittfall. This points towards difficulties in imaging an integrated resource planning combined with a liberalized market. The three variable parameters, population, energy...

  18. Integrated energy systems based on cascade utilization of energy

    Institute of Scientific and Technical Information of China (English)

    JIN Hongguang; LI Bingyu; FENG Zhibing; GAO Lin; HAN Wei

    2007-01-01

    Focusing on the traditional principle of physical energy utilization,new integration concepts for combined cooling,heating and power (CCHP) system were identified,and corresponding systems were investigated.Furthermore,the principle of cascade utilization of both chemical and physical energy in energy systems with the integration of chemical processes and thermal cycles was introduced,along with a general equation describing the interrelationship among energy levels of substance,Gibbs free energy of chemical reaction and physical energy.On the basis of this principle,a polygeneration system for power and liquid fuel (methanol)production has been presented and investigated.This system innovatively integrates a fresh gas preparation subsystem without composition adjustment process (NA) and a methanol synthesis subsystem with partial-recycle scheme (PR).Meanwhile,a multi-functional energy system (MES) that consumes coal and natural gas as fuels simultaneously,and co-generates methanol and power,has been presented.In the MES,coal and natural gas are utilized synthetically based on the method of dual-fuel reforming,which integrates methane/steam reforming and coal combustion.Compared with conventional energy systems that do not consider cascade utilization of chemical energy,both of these systems provide superior performance,whose energy saving ratio can be as high as 10%-15%.With special attention paid to chemical energy utilization,the integration features of these two systems have been revealed,and the important role that the principle of cascade utilization of both chemical and physical energy plays in system integration has been identified.

  19. The intelligent energy system for tomorrow

    Energy Technology Data Exchange (ETDEWEB)

    Larsen, Hans; Morthorst, Poul Erik; Bindslev, Henrik; Sonderberg Petersen, Leif

    2010-09-15

    In a future energy system non-fossil fuels have taken the lead, end-use technologies are highly efficient and closely interlinked to supply through intelligent energy systems. Climate change issues, security of supply and economic development need to be pursued concurrently. This calls for flexible and intelligent energy system infrastructures that effectively accommodate large amounts of fluctuating renewable energy and let the end-user interact with the supply through advanced ICT. The second important characteristic is intelligent integration of the entire transport sector. The third key area is advanced energy storage facilities in the system and the introduction of super-grids.

  20. ‘Let us distribute lands fairly and deservedly’: land distribution system establishment in russia in the 15th–16th centuries

    OpenAIRE

    Bentsianov, Mikhail

    2016-01-01

    The author studies the establishment of the land distribution system in the Russian state between the 15th and mid-16th centuries. Referring to a vast variety of sources (cadastre books, gentry military lists, letters patent, legislative acts, etc.) the author analyzes the appearance and further development of the system of land distribution. Comparing materials from different parts of the country, the author describes the complexity and ambiguity behind the creation of the said system. Its b...

  1. Solar energy thermally powered electrical generating system

    Science.gov (United States)

    Owens, William R. (Inventor)

    1989-01-01

    A thermally powered electrical generating system for use in a space vehicle is disclosed. The rate of storage in a thermal energy storage medium is controlled by varying the rate of generation and dissipation of electrical energy in a thermally powered electrical generating system which is powered from heat stored in the thermal energy storage medium without exceeding a maximum quantity of heat. A control system (10) varies the rate at which electrical energy is generated by the electrical generating system and the rate at which electrical energy is consumed by a variable parasitic electrical load to cause storage of an amount of thermal energy in the thermal energy storage system at the end of a period of insolation which is sufficient to satisfy the scheduled demand for electrical power to be generated during the next period of eclipse. The control system is based upon Kalman filter theory.

  2. Public outcomes: Building a 21st century national innovation system that serves the public

    Energy Technology Data Exchange (ETDEWEB)

    Gover, J. [Sandia National Labs., Albuquerque, NM (United States); Huray, P.; Carayannis, E. [George Washington Univ., Washington, DC (United States)

    1997-09-01

    Federal R and D must be principally focused on solving public problems that the marketplace is failing to address. With few exceptions programs must be supported by roadmaps that show how the R and D is linked to public outcomes. Federal R and D and those who perform it must be judged in terms of the public outcomes. The overarching issues of federal R and D policy, what it should address, how to manage it, who should perform it, how to perform it, what works best, etc. are highly complex and lack a strong theoretical foundation. (In fact, the linear, assembly-line model used by policymakers is wrong.) It is time that policymakers recognize and acknowledge the uncertainty of their work and conduct a wide array of policy experiments (the authors consider SEMATECH such an experiment) that are supported by public outcome metrics. In addition to making federal R and D better address public needs, such an approach to policy making could raise the public`s interest in T and S policy. Of course, as in any experiment the results may be measured and if failures aren`t observed, it is likely that policies lack vision and imagination. It is time to abandon the budget driven federal R and D system where performers of federal R and D are treated as constituents, and replace it with a public problem--public outcome driven system where public problems are prioritized and the budget is distributed to agencies according to these priorities.

  3. The Himalayan hydro machine and space transmission power systems - An Asian dream of 21st century

    Science.gov (United States)

    Admoddie, M.

    The advantages and disadvantages for the development of hydroelectric power are assessed for the Himalayan Rectangle, an area rising 1500 km north of a baseline between Karachi and Mandalay. This area has the potential for possessing one of the world's greatest power production capabilities. Among the disadvantages cited are the political instability and religious fundamentalism of the area, the bankrupt governments, environmental degradation, and inefficient power and irrigation systems. The advantages include the millions of talented and enterprising people in the region awaiting higher opportunities who are eager to improve their families' living standards and the large untapped hydropower resources. The concepts for hydropower development are discussed and go beyond the technologies of power and water. They include catchment ecodevelopment strategies with massive afforestation plans, setting up plans to strengthen village-level institutions to manage local natural biomass and water assets, the conversion of this regional hydropower potential into a subcontinental power system, and the exporting of power and the development of an interregional and international power grid by 2030, when both oil and local ecosystems would be dangerously depleted.

  4. LCA of biomass-based energy systems

    DEFF Research Database (Denmark)

    Tonini, Davide; Astrup, Thomas

    2012-01-01

    Decrease of fossil fuel consumption in the energy sector is an important step towards more sustainable energy production. Environmental impacts related to potential future energy systems in Denmark with high shares of wind and biomass energy were evaluated using life-cycle assessment (LCA). Based...

  5. Linnaeus' restless system: translation as textual engineering in eighteenth-century botany.

    Science.gov (United States)

    Dietz, Bettina

    2016-04-01

    In this essay, translations of Linnaeus' Systema naturae into various European languages will be placed into the context of successively expanded editions of Linnaeus' writings. The ambition and intention of most translators was not only to make the Systema naturae accessible for practical botanical use by a wider readership, but also to supplement and correct it, and thus to shape it. By recruiting more users, translations made a significant contribution to keeping the Systema up to date and thus maintaining its practical value for decades. The need to incorporate countless additions and corrections into an existing text, to document their provenance, to identify inconsistencies, and to refer to relevant observations, descriptions, and illustrations in the botanical literature all helped to develop and refine techniques of textual montage. This form of textual engineering, becoming increasingly complex with each translation cycle, shaped the external appearance of new editions of the Systema, and reflected the modular architecture of a botanical system designed for expansion. PMID:27391666

  6. XXI Century Climatology of Snow Cover for the Western River Basins of the Indus River System

    CERN Document Server

    Hasson, Shabeh ul; Lucarini, Valerio

    2012-01-01

    Under changing climate, freshwater resources of Hindu Kush-Karakoram-Himalaya (HKH) region can be affected by changes in temperature and in amount, type and distribution of precipitation. This can have serious implications for the water supply and in turn threaten the food security and economic wellbeing of Indus basin. Using MODIS daily snow products (Terra & Aqua), this study focuses on the assessment of the 2000-2010 snow cover dynamics on seasonal/annual basis against geophysical parameters (aspect, elevation and slope) for the so called western river basins of Indus River System (IRS), namely Indus, Kabul, Jhelum, Astore, Gilgit, Hunza, Swat, Shigar and Shyok basins. Results show that inputs from MODIS instrument provide unprecedented better opportunity to study by using GIS techniques the snow cover dynamics in the remote areas like HKH region at such hyper-temporal and finer planar resolution. Adapted non-spectral cloud filtering techniques have significantly reduced cloud coverage and improved sno...

  7. Is it time for a new paradigm for systemic cancer treatment? Lessons from a century of cancer chemotherapy

    Directory of Open Access Journals (Sweden)

    Sarah eCrawford

    2013-06-01

    Full Text Available U.S. SEER data for age-adjusted mortality rates for all cancers combined for all races show only a modest overall 13% decline over the past 35 years. Moreover, the greatest contributor to cancer mortality is treatment resistant metastatic disease. The accepted therapeutic paradigm for the past half century for the treatment of advanced cancers has involved the use of systemic chemotherapy drugs cytotoxic for cycling cells (both normal and malignant during DNA synthesis and/or mitosis. The failure of this therapeutic modality to achieve high level, consistent rates of disease free survival for some of the most common cancers, including tumors of the lung, colon breast, brain, melanoma and others is the focus of this paper. A retrospective assessment of critical milestones in cancer chemotherapy indicates that most successful therapeutic regimens use cytotoxic cell cycle inhibitors in combined, maximum tolerated, dose dense acute treatment regimens originally developed to treat acute lymphoblastic leukemia and some lymphomas. Early clinical successes in this area led to their wholesale application to the treatment of solid tumor malignancies that, unfortunately, has not produced consistent, long-term high cure rates for many common cancers. Important differences in therapeutic sensitivity of leukemias/lymphomas versus solid tumors can be explained by key biological differences that define the treatment resistant solid tumor phenotype. A review of these clinical outcome data in the context of recent developments in our understanding of drug resistance mechanisms characteristic of solid tumors suggests the need for a new paradigm for the treatment of chemotherapy-resistant cancers. In contrast to reductionist approaches, the systemic approach targets both micro-environmental and systemic factors that drive and sustain tumor progression. These systemic factors include dysregulated inflammatory and oxidation pathways shown to be directly implicated in

  8. Ministerial Presentation: Sudan [International Ministerial Conference on Nuclear Energy in the 21. Century: Addressing Energy Needs and Environmental Challenges, Beijing (China), 20-22 April 2009

    International Nuclear Information System (INIS)

    First, I would like to thank the IAEA and OECD for sponsoring this conference and the government of China for hosting the conference. It gives me great pleasure to address this conference. This is a very important conference dealing with nuclear power in the 21st century. Sudan as a developing nation experiences an increase in the energy demand of its people. This is due to an increase industrialization and urbanization. Sudan with the assistance of the IAEA has initiated a planning study for long term energy supply and demand. This study showed that by the year 2020 an energy gap between energy supply and demand will occur. According to this study Sudan need to consider the nuclear option as part of an energy mix. Accordingly, Sudan with the help of the IAEA has started a technical cooperation program aiming at understanding the necessary infrastructure needed for a nuclear power program. To implement this program two committees were formed. A technical committee to address the technical requirement for the project and a high administrative committee to give the necessary political support. Utilizing nuclear energy for peaceful purposes requires strong commitment towards issues of safety, security and safeguards of nuclear and radioactive material. As part of the infrastructure requirement, in Sudan we started the amendments of the legal and regulatory framework. A new atomic energy act is being drafted. The most important features of this act are that: It provide for the establishment of a separate independent regulatory authority which will deal with all regulatory aspects of radioactive sources and nuclear material. The act also covers areas like emergency preparedness, nuclear security, liability and others. The legal requirement of nuclear program is the adherences to certain international legal instrument. A national committee from the ministries of justice, foreign affairs and science and technology was formed to advice on the country position regarding the

  9. Environmentally-adapted local energy systems

    Energy Technology Data Exchange (ETDEWEB)

    Moe, N.; Oefverholm, E. [NUTEK, Stockholm (Sweden); Andersson, Owe [EKAN Gruppen (Sweden); Froste, H. [Swedish Environmental Protection Agency, Stockholm (Sweden)

    1997-10-01

    Energy companies, municipalities, property companies, firms of consultants, environmental groups and individuals are examples of players working locally to shape environmentally adapted energy systems. These players have needed information making them better able to make decisions on cost-efficient, environmentally-adapted energy systems. This book answers many of the questions they have put. The volume is mainly based on Swedish handbooks produced by the Swedish National Board for Industrial and Technical Development, NUTEK, together with the Swedish Environmental Protection Agency. These handbooks have been used in conjunction with municipal energy planning, local Agenda 21 work, to provide a basis for deciding on concrete local energy systems. The contents in brief: -The book throws new light on the concept of energy efficiency; -A section on the environment compares how air-polluting emissions vary with different methods of energy production; -A section contains more than 40 ideas for measures which can be profitable, reduce energy consumption and the impact on the environment all at the same time; -The book gives concrete examples of new, alternative and environmentally-adapted local energy systems. More efficient use of energy is included as a possible change of energy system; -The greatest emphasis is laid upon alternative energy systems for heating. It may be heating in a house, block of flats, office building or school; -Finally, there are examples of environmentally-adapted local energy planning.

  10. A study of a new electrical energy storage system in which nuclear energy is used for methanol production

    International Nuclear Information System (INIS)

    The significance of nuclear energy is increasing because it has the potential to solve a number of problems concerned with shortages of fuels and environmental degradation in the 21st century. Therefore the uses of nuclear power should be widened so that it can be used as a source of heat energy as well as just being used for electrical generation. A concept for utilizing nuclear energy effectively has been studied for an electric power company. A new electric energy storage system has been proposed which stores power by producing a synthetic fuel, methanol. The methanol is made from coal gas and hydrogen which is produced by excess off-peak electricity and high temperature heat from a HTGR. The system is not only technically feasible, but is also cost-competitive with other storage systems. (author)

  11. Developing and delivering food systems training programs for 21st century audiences

    Directory of Open Access Journals (Sweden)

    Troy Hahn

    2016-04-01

    Full Text Available Expectations for training programmes today are very different from expectations for training programmes in the past, because today’s audiences are not only multigenerational, but the younger generations learn in distinctly different ways from older, more traditional audiences. To meet the needs of these multigenerational audiences, the Auburn University Food Systems Institute (AUFSI has developed on-demand, online courses that offer a variety of ways for learners to interact with training materials. For example, a typical course may offer not only traditional text, but audio, video, simulations, and more. In addition, AUFSI has developed supporting educational tools such as interactive virtual tours and video games. This approach to creating courses is a response to the  different levels of experiences of the generations as well as different expectations of how materials should be delivered. In order to be effective, training materials need to be designed to appeal to this multigenerational audience. Traditionalists (born before 1946 prefer face-to-face training programmes. Baby Boomers (born 1946-1964 are more accepting of technology. Generations X (born 1965-1980, Y (born 1981- 2000 and C (born after 2000, however, expect to receive training at their convenience, to have it delivered electronically, and to be entertained as well as educated.

  12. Energy analysis of a supermarket refrigeration system

    DEFF Research Database (Denmark)

    Jensen, Jakob Munch; Jakobsen, Arne; Rasmussen, Bjarne D.;

    1999-01-01

    From 1995 to 1998, an energy test method for supermarket refrigeration systems was developed in a project financed by the Danish Energy Agency. The purpose of the energy test method is to provide the means for evaluating the energy efficiency of these systems. The test method requires measurements...... of air temperatures and energy consumption to be carried out on the selected supermarket refrigeration system. In addition to the measurements required by the method, more measurements of individual energy consumptions have been carried in the case described in this paper. The purpose of the...... additional measurements is to make a more detailed investigation of the energy efficiency possible.According to this investigation, a considerable part of the energy consumption is used for anti sweat heaters in refrigerated cabinets.At present, the energy test has only been carried out on five different...

  13. Proceeding of the Fourth Scientific Presentation on Nuclear Fuel Cycle: Technology of Nuclear Fuel Cycle facing the Challenge of Energy Need on the 21-st Century

    International Nuclear Information System (INIS)

    The proceeding contains papers presented in the Fourth Scientific Presentation on Nuclear Fuel Element Cycle with theme of Technology of Nuclear Fuel Cycle facing the Challenge of Energy Need on the 21st Century, held on 1-2 December in Jakarta, Indonesia. These papers were divided by three groups that are technology of exploration, processing, purification and analysis of nuclear materials; technology of nuclear fuel elements and structures; and technology of waste management, safety and management of nuclear fuel cycle. There are 36 papers indexed individually. (ID)

  14. Energy Systems in the Era of Energy Vectors A Key to Define, Analyze and Design Energy Systems Beyond Fossil Fuels

    CERN Document Server

    Orecchini, Fabio

    2012-01-01

    What lies beyond the era of fossil fuels? While most answers focus on different primary energy resources, Energy Systems in the Era of Energy Vectors provides a completely new approach. Instead of providing a traditional consumption analysis of classical primary energy resources such as oil, coal, nuclear power and gas, Energy Systems in the Era of Energy Vectors describes and assesses energy technologies, markets and future strategies, focusing on their capacity to produce, exchange, and use energy vectors. Special attention is given to the renewable energy resources available in different areas of the world and made exploitable by the integration of energy vectors in the global energy system. Clear definitions of energy vectors and energy systems are used as the basis for a complete explanation and assessment of up-to-date, available technologies for energy resources, transport and storage systems, conversion and use. The energy vectors scheme allows the potential realisation of a worldwide sustainable ener...

  15. Energy storage for power systems

    CERN Document Server

    Ter-Gazarian, Andrei

    2011-01-01

    The supply of energy from primary sources is not constant and rarely matches the pattern of demand from consumers. Electricity is also difficult to store in significant quantities. Therefore, secondary storage of energy is essential to increase generation capacity efficiency and to allow more substantial use of renewable energy sources that only provide energy intermittently. Lack of effective storage has often been cited as a major hurdle to substantial introduction of renewable energy sources into the electricity supply network.This 2nd edition, without changing the existing structure of the

  16. Can Earth System Models Explain the observed 20th Century Global Carbon Sink?

    Science.gov (United States)

    Stouffer, R. J.; Shevliakova, E.; Malyshev, S.; Krasting, J. P.; Pacala, S.; Dunne, J. P.; John, J. G.

    2012-12-01

    Various authors have estimated the net global land carbon flux as a residual from the global budget of atmospheric, oceanic and fossil fuel carbon fluxes. Recently, Tans (2009) used this method to estimate the globally averaged net land carbon inventory changes method from 1850 to near present day. Using ocean model estimates of the oceanic carbon fluxes, he showed the land being a net source of carbon until around 1940, but after that becoming a net sink, with an uncertainty dominated by the net oceanic carbon flux trajectory (~15%; Sabine et al 2004). Recently Ballantyne et al (2012) produced updated estimates of the net carbon fluxes changes from 1960 until present day. They show that the net carbon flux uptake, land plus ocean, increases from around 2 PgC/yr in 1960 to about 5 PgC/yr in 2010. We compare these observationally based estimates with results from the GFDL Earth System Models (ESMs). We show that both GFDL ESMs store too much carbon in the atmosphere, about a 10 to 20 ppm error by 2005. The models have slightly higher mean values than the Tans (2009) oceanic carbon storage changes but fall within the Sabine et al. (2004) uncertainty estimate. While the general shape of the net land carbon changes in Tans (2009) is well simulated by the ESMs, the ESM sign change in land flux occurs about 15-25years later. By 2010, the models simulate the oceanic carbon uptake as ~2.7 PgC/yr, and the land uptake as ~1 PgC/yr for a total of ~4PgC/yr. The land uptake value varies with ensemble member giving evidence for the role of variability in understanding the past carbon changes. This analysis gives us confidence in the models estimates of the climate-carbon feedbacks. The model results will then be analyzed to determine the various causes of those changes.

  17. Renewable Energy Powered Water Treatment Systems

    OpenAIRE

    Richards, Bryce S.; Schäfer, Andrea

    2009-01-01

    There are many motivations for choosing renewable energy technologies to provide the necessary energy to power water treatment systems for reuse and desalination. These range from the lack of an existing electricity grid, particularly in remote areas, to securing future energy and water supplies, to purely financial incentives. While many renewable energy technologies exist the two dominant ones used for powering desalination systems are PV modules and wind turbines. While wave...

  18. Economic Evaluation of Townhouse Solar Energy System

    Science.gov (United States)

    1982-01-01

    Solar-energy site in Columbia, South Carolina, is comprised of four townhouse apartments. Report summarizes economic evaluation of solar--energy system and projected performance of similar systems in four other selected cities. System is designed to supply 65 percent of heating and 75 percent of hot water.

  19. Nonregenerative natural resources in a sustainable system of energy supply.

    Science.gov (United States)

    Bradshaw, Alex M; Hamacher, Thomas

    2012-03-12

    Following the lead of the European Union in introducing binding measures to promote the use of regenerative energy forms, it is not unreasonable to assume that the global demand for combustible raw materials for energy generation will be reduced considerably in the second half of this century. This will not only have a favourable effect on the CO(2) concentration in the atmosphere, but will also help preserve fossil fuels-important as raw materials in the chemical industry-for future generations. Nevertheless, associated with the concomitant massive shift to regenerative energy forms, there will be a strong demand for other exhaustible raw materials, in particular metals, some of which are already regarded as scarce. After reviewing the debate on mineral depletion between "cornucopians" and "pessimists", we discuss the meaning of mineral "scarcity", particularly in the geochemical sense, and mineral "exhaustion". The expected drastic increase in demand for mineral resources caused by demographic and societal pressures, that is, due to the increase in in-use stock, is emphasised. Whilst not discussing the issue of "strong" versus "weak" sustainability in detail, we conclude that regenerative energy systems-like nearly all resource-consuming systems in our society-do not necessarily satisfy generally accepted sustainability criteria. In this regard, we discuss some current examples, namely, lithium and cobalt for batteries, rare earth-based permanent magnets for wind turbines, cadmium and tellurium for solar cells and copper for electrical power distribution. PMID:22351622

  20. Problem-based learning: a strategic learning system design for the education of healthcare professionals in the 21st century.

    Science.gov (United States)

    Gwee, Matthew Choon-Eng

    2009-05-01

    Problem-based learning (PBL) was first implemented by McMaster University medical school in 1969 as a radical, innovative, and alternative pathway to learning in medical education, thus setting a new educational trend. PBL has now spread widely across the globe and beyond the healthcare disciplines, and has prevailed for almost four decades. PBL is essentially a strategic learning system design, which combines several complementary educational principles for the delivery of instruction. PBL is specifically aimed at enhancing and optimizing the educational outcomes of learner-centered, collaborative, contextual, integrated, self-directed, and reflective learning. The design and delivery of instruction in PBL involve peer teaching and learning in small groups through the social construction of knowledge using a real-life problem case to trigger the learning process. Therefore, PBL represents a major shift in the educational paradigm from the traditional teacher-directed (teacher-centered) instruction to student-centered (learner-centered) learning. PBL is firmly underpinned by several educational theories, but problems are often encountered in practice that can affect learning outcomes. Educators contemplating implementing PBL in their institutions should have a clear understanding of its basic tenets, its practice and its philosophy, as well as the issues, challenges, and opportunities associated with its implementation. Special attention should be paid to the training and selection of PBL tutors who have a critical role in the PBL process. Furthermore, a significant change in the mindsets of both students and teachers are required for the successful implementation of PBL. Thus, effective training programs for students and teachers must precede its implementation. PBL is a highly resource-intensive learning strategy and the returns on investment (i.e. the actual versus expected learning outcomes) should be carefully and critically appraised in the decision

  1. 21st century projections of surface mass balance changes for major drainage systems of the Greenland ice sheet

    International Nuclear Information System (INIS)

    Outputs from the regional climate model Modèle Atmosphérique Régionale at a spatial resolution of 25 km are used to study 21st century projected surface mass balance (SMB) over six major drainage basins of the Greenland ice sheet (GrIS). The regional model is forced with the outputs of three different Earth System Models (CanESM2, NorESM1 and MIROC5) obtained when considering two greenhouse gas future scenarios with levels of CO2 equivalent of, respectively, 850 and >1370 ppm by 2100. Results indicate that the increase in runoff due to warming will exceed the increased precipitation deriving from the increase in evaporation for all basins, with the amount of net loss of mass at the surface varying spatially. Basins along the southwest and north coast are projected to have the highest sensitivity of SMB to increasing temperatures. For these basins, the global temperature anomaly corresponding to a decrease of the SMB below the 1980–99 average (when the ice sheet was near the equilibrium) ranges between +0.60 and +2.16 °C. For the basins along the northwest and northeast, these values range between +1.50 and +3.40 °C. Our results are conservative as they do not account for ice dynamics and changes in the ice sheet topography. (letter)

  2. Predicting U.S. food demand in the 20th century: a new look at system dynamics

    Science.gov (United States)

    Moorthy, Mukund; Cellier, Francois E.; LaFrance, Jeffrey T.

    1998-08-01

    The paper describes a new methodology for predicting the behavior of macroeconomic variables. The approach is based on System Dynamics and Fuzzy Inductive Reasoning. A four- layer pseudo-hierarchical model is proposed. The bottom layer makes predications about population dynamics, age distributions among the populace, as well as demographics. The second layer makes predications about the general state of the economy, including such variables as inflation and unemployment. The third layer makes predictions about the demand for certain goods or services, such as milk products, used cars, mobile telephones, or internet services. The fourth and top layer makes predictions about the supply of such goods and services, both in terms of their prices. Each layer can be influenced by control variables the values of which are only determined at higher levels. In this sense, the model is not strictly hierarchical. For example, the demand for goods at level three depends on the prices of these goods, which are only determined at level four. Yet, the prices are themselves influenced by the expected demand. The methodology is exemplified by means of a macroeconomic model that makes predictions about US food demand during the 20th century.

  3. Projected evolution of California's San Francisco Bay-Delta-river system in a century of climate change.

    Directory of Open Access Journals (Sweden)

    James E Cloern

    Full Text Available BACKGROUND: Accumulating evidence shows that the planet is warming as a response to human emissions of greenhouse gases. Strategies of adaptation to climate change will require quantitative projections of how altered regional patterns of temperature, precipitation and sea level could cascade to provoke local impacts such as modified water supplies, increasing risks of coastal flooding, and growing challenges to sustainability of native species. METHODOLOGY/PRINCIPAL FINDINGS: We linked a series of models to investigate responses of California's San Francisco Estuary-Watershed (SFEW system to two contrasting scenarios of climate change. Model outputs for scenarios of fast and moderate warming are presented as 2010-2099 projections of nine indicators of changing climate, hydrology and habitat quality. Trends of these indicators measure rates of: increasing air and water temperatures, salinity and sea level; decreasing precipitation, runoff, snowmelt contribution to runoff, and suspended sediment concentrations; and increasing frequency of extreme environmental conditions such as water temperatures and sea level beyond the ranges of historical observations. CONCLUSIONS/SIGNIFICANCE: Most of these environmental indicators change substantially over the 21(st century, and many would present challenges to natural and managed systems. Adaptations to these changes will require flexible planning to cope with growing risks to humans and the challenges of meeting demands for fresh water and sustaining native biota. Programs of ecosystem rehabilitation and biodiversity conservation in coastal landscapes will be most likely to meet their objectives if they are designed from considerations that include: (1 an integrated perspective that river-estuary systems are influenced by effects of climate change operating on both watersheds and oceans; (2 varying sensitivity among environmental indicators to the uncertainty of future climates; (3 inevitability of

  4. EDXRF portable system used in the analysis of altars, sculptures and paintings from XVII and XVIII centuries in Brazil

    International Nuclear Information System (INIS)

    Full text: The preservation of cultural heritage has acquired increasing interest in the last decades and many scientific techniques have been employed to analyze paintings, manuscripts, ceramics, glasses, statues, coins and metal artifacts in order to solve problems related to restoration, conservation, dating and attribution of artworks. There is also an increasing trend for non-destructive investigations since most of the samples are unique and precious objects of art and archaeology. X-Ray fluorescence (XRF) is the most widely used investigative technique in the field of archaeometry, due to a number of favorable analytical characteristics, such as multielemental and non-destructive analysis, high sensitivity and applicability to a wide range of samples. In this work, XRF was used to analyze altars, sculptures and paintings in the Saint Anthony Convent (Rio de Janeiro, Brazil). The cornerstone of this convent was launched in 1608, by the Franciscan friars, and the construction of the church was finished in 1620. The Saint Anthony sculpture in the main altar is one of the few remaining pieces from the XVII century in Rio de Janeiro. The splendid Baroque carvings of the chapel, covered with integral gilding, in the national Portuguese style, dates from 1716 to 1719. The results obtained during the analyses have been used in the meticulous process of restoration, developed in the last two years, in order to recover the original splendour of this important piece of our cultural heritage. The analyses were carried out with an EDXRF portable system developed in the Nuclear Instrumentation Laboratory, consisting of an X-ray tube Oxford TF3005 with W anode, operating at 25 kV and 100 μA, and a Si-PIN XR-100CR detector from Amptek. In each sample were obtained several spectra, with an acquisition time of 300 s and a beam collimation of 1.5 and 2 mm. The spectra were analyzed using the software QXAS-AXIL from IAEA. The analysis of the golden carvings of the altars, in

  5. Financial overview of integrated community energy systems

    Energy Technology Data Exchange (ETDEWEB)

    Croke, K. G.; Hurter, A. P.; Lerner, E.; Breen, W.; Baum, J.

    1977-01-01

    This report is designed to analyze the commercialization potential of various concepts of community-scale energy systems that have been termed Integrated Community Energy Systems (ICES). A case analysis of alternative ICES concepts applied to a major metropolitan development complex is documented. The intent of this study is twofold: (1) to develop a framework for comparing ICES technologies to conventional energy supply systems and (2) to identify potential problems in the commercialization of new systems approaches to energy conservation. In brief, the ICES Program of the ERDA Office of Energy Conservation is intended to identify the opportunities for energy conservation in the community context through analysis, development, and/or demonstration of: location and design of buildings, building complexes, and infrastructure links; engineering and systems design of existing, emerging, and advanced energy production and delivery technologies and systems; regulatory designs for public planning, administration, and regulation of energy-conserving community development and energy services; and financial planning for energy-conserving community development and energy supply systems.

  6. Energy Management System in DC Future Home

    OpenAIRE

    Zhang, Wei

    2015-01-01

    Making electricity grids smarter and facilitating them with integration of renewable energy sources (RES) and energy storage are fairly accepted as the necessary steps to achieve a sustainable and secure power industry. To enable Net-zero energy and optimize power management for future homes or buildings, DC electric distribution systems (DC Nano-grid) find feasibility and simplicity for integrating renewable energy sources and energy storage. However, integrating the sources and loads in a s...

  7. Energy Signal Tool for Decision Support in Building Energy Systems

    Energy Technology Data Exchange (ETDEWEB)

    Henze, G. P.; Pavlak, G. S.; Florita, A. R.; Dodier, R. H.; Hirsch, A. I.

    2014-12-01

    A prototype energy signal tool is demonstrated for operational whole-building and system-level energy use evaluation. The purpose of the tool is to give a summary of building energy use which allows a building operator to quickly distinguish normal and abnormal energy use. Toward that end, energy use status is displayed as a traffic light, which is a visual metaphor for energy use that is either substantially different from expected (red and yellow lights) or approximately the same as expected (green light). Which light to display for a given energy end use is determined by comparing expected to actual energy use. As expected, energy use is necessarily uncertain; we cannot choose the appropriate light with certainty. Instead, the energy signal tool chooses the light by minimizing the expected cost of displaying the wrong light. The expected energy use is represented by a probability distribution. Energy use is modeled by a low-order lumped parameter model. Uncertainty in energy use is quantified by a Monte Carlo exploration of the influence of model parameters on energy use. Distributions over model parameters are updated over time via Bayes' theorem. The simulation study was devised to assess whole-building energy signal accuracy in the presence of uncertainty and faults at the submetered level, which may lead to tradeoffs at the whole-building level that are not detectable without submetering.

  8. Introduction to wind energy systems

    Science.gov (United States)

    Wagner, H.-J.

    2015-08-01

    This article presents the basic concepts of wind energy and deals with the physics and mechanics of operation. It describes the conversion of wind energy into rotation of turbine, and the critical parameters governing the efficiency of this conversion. After that it presents an overview of various parts and components of windmills. The connection to the electrical grid, the world status of wind energy use for electricity production, the cost situation and research and development needs are further aspects which will be considered.

  9. Introduction to wind energy systems

    OpenAIRE

    Wagner H.-J.

    2015-01-01

    This article presents the basic concepts of wind energy and deals with the physics and mechanics of operation. It describes the conversion of wind energy into rotation of turbine, and the critical parameters governing the efficiency of this conversion. After that it presents an overview of various parts and components of windmills. The connection to the electrical grid, the world status of wind energy use for electricity production, the cost situation and research and development needs are fu...

  10. Introduction to wind energy systems

    OpenAIRE

    Wagner H.-J.

    2013-01-01

    This article presents the basic concepts of wind energy and deals with the physics and mechanics of operation. It describes the conversion of wind energy into rotation of turbine, and the critical parameters governing the efficiency of this conversion. After that it presents an overview of various parts and components of windmills. The connection to the electrical grid, the world status of wind energy use for electricity production, the cost situation and research and development needs are fu...

  11. Energy system impacts of desalination in Jordan

    DEFF Research Database (Denmark)

    Østergaard, Poul Alberg; Lund, Henrik; Mathiesen, Brian Vad

    2014-01-01

    others population and wealth increase and competitive water uses from agriculture and industry is causing many nations to turn to desalination technologies. This article investigates a Jordanian energy scenario with two different desalination technologies; reverse osmosis (RO) driven by electricity and...... Multi Stage Flash (MSF) desalination driven by Cogeneration of Heat and Power (CHP). The two systems impact the energy systems in different ways due to the technologies’ particular characteristics. The systems are analyses in the energy systems analysis model EnergyPLAN to determine the impacts on...

  12. Energy system impacts of desalination in Jordan

    Directory of Open Access Journals (Sweden)

    Poul Alberg Østergaard

    2014-02-01

    Full Text Available Climate change mitigation calls for energy systems minimising end-use demands, optimising the fuel efficiency of conversion systems, increasing the use of renewable energy sources and exploiting synergies wherever possible. In parallel, global fresh water resources are strained due to amongst others population and wealth increase and competitive water uses from agriculture and industry is causing many nations to turn to desalination technologies. This article investigates a Jordanian energy scenario with two different desalination technologies; reverse osmosis (RO driven by electricity and Multi Stage Flash (MSF desalination driven by Cogeneration of Heat and Power (CHP. The two systems impact the energy systems in different ways due to the technologies’ particular characteristics. The systems are analyses in the energy systems analysis model EnergyPLAN to determine the impacts on energy system performance. Results indicate that RO and MSF are similar in fuel use. While there is no use of waste heat from condensing mode plants, efficiencies for CHP and MSF are not sufficiently good to results in lower fuel usage than RO. The Jordanian energy system is somewhat inflexible giving cause to Critical Excess Electricity Production (CEEP even at relatively modest wind power penetrations. Here RO assists the energy system in decreasing CEEP – and even more if water storage is applied.

  13. Energy performance of cleanroom environmental systems

    Energy Technology Data Exchange (ETDEWEB)

    Xu, Tengfang; Tschudi, William F.

    2001-11-01

    By developing metrics for evaluating cleanroom air system performance and overall load intensity, this paper provides energy benchmarking results for thirteen cleanroom environmental system performance, and identifies opportunities for improving cleanroom energy efficiency while maintaining or improving cleanroom contamination control. Comparisons with IEST Recommended Practice are made to examine the performance of cleanroom air systems. These results can serve as a vehicle to identify energy efficient cleanroom design practices and to highlight important issues in cleanroom operation and maintenance. Results from this study confirm that there are opportunities in improving energy efficiency of cleanroom environmental systems while maintaining effective contamination control.

  14. Identification of wind energy systems

    OpenAIRE

    Van der Veen, G.J.

    2013-01-01

    In the next decades wind energy is expected to secure a firm share of the total energy production capacity in many countries. To increase competitiveness of wind power with other power sources it is essential to lower the cost of wind energy. Given the design of a turbine, this objective can be attained in several ways, for instance by increasing the energy production of a wind turbine and by lowering loads on the wind turbine in order to reduce maintenance costs. Research performed in recent...

  15. Energy accounting in nuclear power systems

    International Nuclear Information System (INIS)

    Energy analysis is a systematic way of tracing and accounting for the flows of energy through an industrial system and apportioning a quantity of the primary energy input of the goods and services sent out. The application of energy accounting to nuclear power stations and their growth in generating systems is discussed. Misunderstandings arising from discrepancies and weaknesses in some published simple analyses of hypothetical growth situations are outlined. Results of a more complex energy flow analysis are used to demonstrate that current nuclear energy programs are running at an energy profit. Large fossil fuel savings will occur in a real electrical grid system under anticipated nuclear power growth rates. These savings will give a new dimension in planning the use of fossil energy resources which will still be needed for transport and industrial processes, such as steel-making, for some time to come. (author)

  16. A rationale plan for conversion of Malaysia for solar hydrogen energy system and its benefits

    International Nuclear Information System (INIS)

    It expected that early in the next century, Malaysia production of petroleum and natural gas will peak, and thereafter production will decline. In parallel with this production decline, Malaysia income from fossil fuels will start to decline, which would hurt the economy. One possible solution for Malaysia is the of Malaysia is the conversion to a hydrogen energy system. In order to move towards a sustainable hydrogen energy system, a future strategy must be outlined, followed, and continually revised. This paper will underline the available hydrogen technologies for production, storage, delivery, conversion, transportation and end use energy applications for the implementation of hydrogen energy system. Therefore, this paper will also emphasis the key success factors to drive the rationale plan for conversion to hydrogen energy system for Malaysia

  17. Modular Energy Storage System for Alternative Energy Vehicles

    Energy Technology Data Exchange (ETDEWEB)

    Thomas, Janice [Magna Electronics Inc., Auburn Hills, MI (United States); Ervin, Frank [Magna Electronics Inc., Auburn Hills, MI (United States)

    2012-05-15

    An electrical vehicle environment was established to promote research and technology development in the area of high power energy management. The project incorporates a topology that permits parallel development of an alternative energy delivery system and an energy storage system. The objective of the project is to develop technologies, specifically power electronics, energy storage electronics and controls that provide efficient and effective energy management between electrically powered devices in alternative energy vehicles plugin electric vehicles, hybrid vehicles, range extended vehicles, and hydrogen-based fuel cell vehicles. In order to meet the project objectives, the Vehicle Energy Management System (VEMS) was defined and subsystem requirements were obtained. Afterwards, power electronics, energy storage electronics and controls were designed. Finally, these subsystems were built, tested individually, and integrated into an electric vehicle system to evaluate and optimize the subsystems performance. Phase 1 of the program established the fundamental test bed to support development of an electrical environment ideal for fuel cell application and the mitigation of many shortcomings of current fuel cell technology. Phase 2, continued development from Phase 1, focusing on implementing subsystem requirements, design and construction of the energy management subsystem, and the integration of this subsystem into the surrogate electric vehicle. Phase 2 also required the development of an Alternative Energy System (AES) capable of emulating electrical characteristics of fuel cells, battery, gen set, etc. Under the scope of the project, a boost converter that couples the alternate energy delivery system to the energy storage system was developed, constructed and tested. Modeling tools were utilized during the design process to optimize both component and system design. This model driven design process enabled an iterative process to track and evaluate the impact

  18. Solar energy grid integration systems - Energy storage (SEGIS-ES)

    Energy Technology Data Exchange (ETDEWEB)

    Ton, Dan [U.S. Dept. of Energy, Washington, D.C. (United States); Peek, Georgianne H. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Hanley, Charles [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Boyes, John [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2008-05-01

    In late 2007, the U.S. Department of Energy (DOE) initiated a series of studies to address issues related to potential high penetration of distributed photovoltaic (PV) generation systems on our nation’s electric grid. This Renewable Systems Interconnection (RSI) initiative resulted in the publication of 14 reports and an Executive Summary that defined needs in areas related to utility planning tools and business models, new grid architectures and PV systems configurations, and models to assess market penetration and the effects of high-penetration PV systems. As a result of this effort, the Solar Energy Grid Integration Systems (SEGIS) program was initiated in early 2008. SEGIS is an industry-led effort to develop new PV inverters, controllers, and energy management systems that will greatly enhance the utility of distributed PV systems.

  19. Concluding Statement by the President of the Conference - Li Yizhong [International Ministerial Conference on Nuclear Energy in the 21. Century: Addressing Energy Needs and Environmental Challenges, Beijing (China), 20-22 April 2009

    International Nuclear Information System (INIS)

    A wide range of issues has been covered during the three day conference, including energy resources and the environment, technology available now and in the future, infrastructure development, reliable fuel supply, spent fuel and waste management. The participants exchanged views on the future role of nuclear energy, in presentations, discussions and consultations. There was a broad convergence of views among participants. The goal of the conference has been achieved. The conference recognized the positive momentum towards nuclear power and the decisions by many developed and developing States to pursue the use of nuclear energy. The Director General of the IAEA reported that more than 60 countries ? mostly in the developing world ? have informed the IAEA that they might be interested in launching nuclear power programmes. While respecting the right of each State to define its national energy policy in accordance with its international obligations, the vast majority of participants affirmed that nuclear energy, as a proven, clean, safe, competitive technology, will make an increasing contribution to the sustainable development of humankind throughout the 21st century and beyond. It was widely recognized that: Nuclear power contributes to global energy security while addressing climate change and avoiding air pollution; Nuclear power is a baseload source of electricity that can make a major contribution to meeting energy needs in a sustainable manner in the 21st century; Nuclear energy can make a valuable contribution to worldwide socioeconomic development

  20. Programming models for energy-aware systems

    Science.gov (United States)

    Zhu, Haitao

    Energy efficiency is an important goal of modern computing, with direct impact on system operational cost, reliability, usability and environmental sustainability. This dissertation describes the design and implementation of two innovative programming languages for constructing energy-aware systems. First, it introduces ET, a strongly typed programming language to promote and facilitate energy-aware programming, with a novel type system design called Energy Types. Energy Types is built upon a key insight into today's energy-efficient systems and applications: despite the popular perception that energy and power can only be described in joules and watts, real-world energy management is often based on discrete phases and modes, which in turn can be reasoned about by type systems very effectively. A phase characterizes a distinct pattern of program workload, and a mode represents an energy state the program is expected to execute in. Energy Types is designed to reason about energy phases and energy modes, bringing programmers into the optimization of energy management. Second, the dissertation develops Eco, an energy-aware programming language centering around sustainability. A sustainable program built from Eco is able to adaptively adjusts its own behaviors to stay on a given energy budget, avoiding both deficit that would lead to battery drain or CPU overheating, and surplus that could have been used to improve the quality of the program output. Sustainability is viewed as a form of supply and demand matching, and a sustainable program consistently maintains the equilibrium between supply and demand. ET is implemented as a prototyped compiler for smartphone programming on Android, and Eco is implemented as a minimal extension to Java. Programming practices and benchmarking experiments in these two new languages showed that ET can lead to significant energy savings for Android Apps and Eco can efficiently promote battery awareness and temperature awareness in real

  1. Solar Energy: Solar System Design Fundamentals.

    Science.gov (United States)

    Knapp, Henry H., III

    This module on solar system design fundamentals is one of six in a series intended for use as supplements to currently available materials on solar energy and energy conservation. Together with the recommended texts and references (sources are identified), these modules provide an effective introduction to energy conservation and solar energy…

  2. Smart and usable home energy management systems

    NARCIS (Netherlands)

    Van Dam, S.S.

    2009-01-01

    This paper reviews research into Home Energy Management Systems (HEMS). These are intermediary products that can visualize, manage, and/or monitor the energy use of other products or whole households. HEMS have lately received increasing attention for their possible role in conserving energy within

  3. A Novel Home Energy Management System Architecture

    DEFF Research Database (Denmark)

    Rossello Busquet, Ana; Soler, José; Dittmann, Lars

    2011-01-01

    The number of electronic devices found in home environments is increasing, leading to an increase in the energy consumption in users’ premises. Introducing a Home Energy Management System (HEMS) into user residences might provide the necessary tools to reduce and optimize the energy consumption i...

  4. A study on the role of nuclear energy in the demand-supply structure in the 21st century. Towards the use of hydrogen and electricity energy

    International Nuclear Information System (INIS)

    It is said that global warming has been caused by the massive consumption of fossil fuel such as oil and coal. As a fundamental measure to solve this problem, hydrogen is highly expected to be the next-generation energy source, the by-product after combustion of which is water. Previous studies have concentrated on the examination of hydrogen-producing systems that use such means as sunlight or wind power generation and transporting liquefied hydrogen to Japan (NEDO WE-NET Plan). In this study, a simulation using the energy demand-supply model was conducted in view of the advent of an energy system that is based on hydrogen and electrical energy while taking hydrogen production by means of nuclear power such as a high-temperature gas reactor into consideration. On the basis of the results, the conditions for dissemination of use of hydrogen and the role of nuclear power were examined. As a result, we found that widespread use of hydrogen will be promoted by environmental regulations and that hydrogen produced by means of nuclear power, which does not produce carbon dioxide at the time of production, will likely play an important role. (author)

  5. Introduction to wind energy systems

    Directory of Open Access Journals (Sweden)

    Wagner H.-J.

    2015-01-01

    Full Text Available This article presents the basic concepts of wind energy and deals with the physics and mechanics of operation. It describes the conversion of wind energy into rotation of turbine, and the critical parameters governing the efficiency of this conversion. After that it presents an overview of various parts and components of windmills. The connection to the electrical grid, the world status of wind energy use for electricity production, the cost situation and research and development needs are further aspects which will be considered.

  6. Five paradox on energy system management

    International Nuclear Information System (INIS)

    Five paradox are detailed on energy management: internationalization of energy questions but always regional management is present, short term problems must be solved but without forgetting long term problems in environment, the third paradox is : we have time but we are in a hurry, we have reserves but ten, twenty or thirty years are necessary to adapt our energy system; the fourth paradox is : we cannot manage energy by managing only energy, for example : finances system development and environment importance. The last and fifth paradox is : the market, yes, but state too, as regulative force

  7. Nuclear Hybrid Energy Systems: Challenges and Opportunities

    Energy Technology Data Exchange (ETDEWEB)

    P. Sabharwall; S.B. Sitton; S.J. Yoon; C. Stoots

    2014-07-01

    With growing demand of energy and costs of the fossil fuels, coupled with the environmental concerns have resulted in an increased interest in alternative energy sources. Nuclear hybrid energy systems (NHES) are being considered which incorporates renewable energy sources such as solar and wind energy combined with nuclear reactor and energy storage to meet the peak hours demand imposed on the grid, along with providing process heat for other potential industrial applications. This concept could potentially satisfy various energy demands and improve reliability, robustness and resilience for the entire system as a whole, along with economic and net efficiency gains. This paper provides a brief understanding of potential NHES system and architecture along with the challenges

  8. Probabilistic Approaches to Energy Systems

    DEFF Research Database (Denmark)

    Iversen, Jan Emil Banning

    renewable energy generation. Particularly we focus on producing forecasting models that can predict renewable energy generation, single user demand, and provide advanced forecast products that are needed for an efficient integration of renewable energy into the power generation mix. Such forecasts can be...... subsequent study the behavior of a fleet of electric vehicles has been studied. In the thesis we go through various examples of forecasts products and their applications. We emphasize that forecasting can not stand alone and should be complimented by optimization and decision making tools for an efficient...... integration of renewable energy.Thus forecast products should be developed in unison with the decision making tool as they are two sides of the same overall challenge....

  9. Wind energy systems: program summary

    Energy Technology Data Exchange (ETDEWEB)

    None

    1980-05-01

    The Federal Wind Energy Program (FWEP) was initiated to provide focus, direction and funds for the development of wind power. Each year a summary is prepared to provide the American public with an overview of government sponsored activities in the FWEP. This program summary describes each of the Department of Energy's (DOE) current wind energy projects initiated or renewed during FY 1979 (October 1, 1978 through September 30, 1979) and reflects their status as of April 30, 1980. The summary highlights on-going research, development and demonstration efforts and serves as a record of progress towards the program objectives. It also provides: the program's general management structure; review of last year's achievements; forecast of expected future trends; documentation of the projects conducted during FY 1979; and list of key wind energy publications.

  10. Wind energy systems information user study

    Energy Technology Data Exchange (ETDEWEB)

    Belew, W.W.; Wood, B.L.; Marle, T.L.; Reinhardt, C.L.

    1981-01-01

    This report describes the results of a series of telephone interviews with potential users of information on wind energy conversion. These interviews, part of a larger study covering nine different solar technologies, attempted to identify: the type of information each distinctive group of information users needed, and the best way of getting information to that group. Groups studied include: wind energy conversion system researchers; wind energy conversion system manufacturer representatives; wind energy conversion system distributors; wind turbine engineers; utility representatives; educators; county agents and extension service agents; and wind turbine owners.

  11. Comparative risk assessment of total energy systems

    International Nuclear Information System (INIS)

    The paper discusses a methodology for total impact assessment of energy systems, ideally evaluating all the impacts that a given energy system has on the society in which it is imbedded or into which its introduction is being considered. Impacts from the entire energy conversion chain ('fuel cycle' if the system is fuel-based), including energy storage, transport and transmission, as well as the institutions formed in order to manage the system, should be compared on the basis of the energy service provided. A number of impacts are considered, broadly classified as impacts on satisfaction of biological needs, on health, on environment, on social relations and on the structure of society. Further considerations include impacts related to cost and resilience, and, last but not least, impacts on global relations. The paper discusses a number of published energy studies in the light of the comparative impact assessment methodology outlined above. (author)

  12. Biodigester as an energy storage system

    Energy Technology Data Exchange (ETDEWEB)

    Borges Neto, M.R.; Lopes, L.C.N. [Federal Institute of Education, Science and Technology of Sertao Pernambucano (IFSertao-PE), Petrolina, PE (Brazil)], Emails: rangel@cefetpet.br; Pinheiro Neto, J.S.; Carvalho, P.C.M. [Federal University of Ceara (UFC), Fortaleza, CE (Brazil). Dept. of Electrical Engineering], Emails: neto@tbmtextil.com.br, carvalho@dee.ufc.br; Silveira, G.C.; Moreira, A.P.; Borges, T.S.H. [Federal Institute of Education, Science and Technology of Ceara (IFCE), Fortaleza, CE (Brazil)], Emails: gcsilveira@cefet-ce.br, apmoreira@ifce.edu.br, thatyanys@yahoo.com.br

    2009-07-01

    Electricity supply for rural and remote areas is becoming an increasing priority to developing countries. The high initial cost of renewable energy based unities usually needs an energy storage system; due its operational and even replacement cost contributes to a higher final cost. The choice of energy storage systems depends on the sort and size of adopted power supply. This paper has a main goal to introduce a renewable energy based storage system weakly explored in Brazil: biogas from anaerobic digestion. It also brings a review of the main energy storage systems applied to electrical energy generation. As reference an experiment with an adapted Indian digester of 5 m{sup 3} that produced nearly 2m{sup 3} of biogas daily. The obtained biogas met the consumption of at least 4 typical Brazilian low income households with installed load of 500 W each and was enough to replace the use of 420 Ah lead-acid batteries. (author)

  13. Hydrogen based energy storage for solar energy systems

    Energy Technology Data Exchange (ETDEWEB)

    Vanhanen, J.; Hagstroem, M.; Lund, P. [Helsinki Univ. of Technology, Otaniemi (Finland). Advanced Energy Systems

    1998-10-01

    The main technical constraint in solar energy systems which operate around the year is the lack of suitable long-term energy storage. Conventional solutions to overcome the problem of seasonal storage in PV power systems are to use oversized batteries as a seasonal energy storage, or to use a diesel back-up generator. However, affordable lead-acid batteries are not very suitable for seasonal energy storage because of a high self-discharge rate and enhanced deterioration and divergence of the single cells during prolonged periods of low state of charge in times of low irradiation. These disadvantages can be avoided by a back-up system, e.g. a diesel generator, which car supply energy to the loads and charge the battery to the full state of charge to avoid the above mentioned disadvantages. Unfortunately, diesel generators have several disadvantages, e.g. poor starting reliability, frequent need for maintenance and noise

  14. The Eco-Refurbishment of a 19th Century Terraced House: Energy and Cost Performance for Current and Future UK Climates

    Directory of Open Access Journals (Sweden)

    Haniyeh Mohammadpourkarbasi

    2013-02-01

    Full Text Available The UK government, responding to concerns over climate change impacts, has undertaken to reduce CO2 emissions to 80% of 1990 levels by 2050. This scale of reduction will require major improvements in the energy efficiency of the existing UK building stock, which is the dominant consumer of fossil fuel-generated energy. Housing is a key sector, and since 70% of all current homes in the UK will still exist in 2050 then low carbon refurbishment is critical if CO2 reduction goals are to be met. This paper uses computer modeling to examine the annual operational energy performance, long term energy cost savings and internal thermal conditions for a 19th century terraced house that was eco-refurbished to near a Passivhaus standard. The dwelling was modeled for three locations (Edinburgh, Manchester and London using current and future climate scenarios (2020s and 2050s under high carbon emission scenarios. Simulation results suggest that there would be very little diminution in heating demand in the future for the house with no refurbishment, whilst the eco-refurbishment produced a significant reduction in energy demand and CO2 emissions. Analysis of the payback period and net present value indicate that the economic optimum varies according to energy prices and that the high construction costs incurred for an eco-refurbishment to a near Passivhaus standard could not be justified in terms of a cost/benefit analysis.

  15. Expected energy production evaluation for photovoltaic systems

    DEFF Research Database (Denmark)

    Ding, Yi; Østergaard, Jacob; Peng, Wang;

    2011-01-01

    A photovoltaic (PV) system consists of many solar panels, which are connected in series, parallel or a combination of both. Energy production for the PV system with various configurations is different. In this paper, a methodology is developed to evaluate and analyze the expected energy production...

  16. The energy future in the world at the 21. century; L'avenir energetique mondial au 21. siecle

    Energy Technology Data Exchange (ETDEWEB)

    Frot, J

    2006-04-15

    After a presentation of the world context of the energy consumption (the growth, the petroleum and the natural gas last, the greenhouse effect gases impacts on the climate), and the today research and development domains in the energy sector (petroleum, gas, generation IV nuclear reactors, carbon sequestration, renewable energies, hydrogen, energy storage), the author examines, using 4 scenario, the margins of action, the energy efficiency, the Gross Domestic Product de-materialization and the costs. Then he discusses the hopes and problems in the domains of the transports and the carbon sequestration. A special attention is devoted to the energy efficiency importance. (A.L.B.)

  17. Probabilistic hindcasts and projections of the coupled climate, carbon cycle and Atlantic meridional overturning circulation system: a Bayesian fusion of century-scale observations with a simple model

    Science.gov (United States)

    Urban, Nathan M.; Keller, Klaus

    2010-10-01

    How has the Atlantic Meridional Overturning Circulation (AMOC) varied over the past centuries and what is the risk of an anthropogenic AMOC collapse? We report probabilistic projections of the future climate which improve on previous AMOC projection studies by (i) greatly expanding the considered observational constraints and (ii) carefully sampling the tail areas of the parameter probability distribution function (pdf). We use a Bayesian inversion to constrain a simple model of the coupled climate, carbon cycle and AMOC systems using observations to derive multicentury hindcasts and projections. Our hindcasts show considerable skill in representing the observational constraints. We show that robust AMOC risk estimates can require carefully sampling the parameter pdfs. We find a low probability of experiencing an AMOC collapse within the 21st century for a business-as-usual emissions scenario. The probability of experiencing an AMOC collapse within two centuries is 1/10. The probability of crossing a forcing threshold and triggering a future AMOC collapse (by 2300) is approximately 1/30 in the 21st century and over 1/3 in the 22nd. Given the simplicity of the model structure and uncertainty in the forcing assumptions, our analysis should be considered a proof of concept and the quantitative conclusions subject to severe caveats.

  18. Meeting of Energy Needs During the Period of Raw Materials Insufficiency in the 21st Century (Bulgaria, Czech Republic, Poland, Russia and Slovakia cooperation - draft of project

    International Nuclear Information System (INIS)

    The main aim of the work is to give into the mutual harmony long term planning of nuclear energy (contemporary power station has supposed lifetime 70 years and will need at least ten years from the decision to full realization) with the possibility of raw materials supply during the whole lifetime. But situation is not so uniquely directed only to nuclear energy - classical sources (coal, gas and oil) are supposed to be exhausted surely in this century (coal could be regionally dependent) and specially Europe will be practically net consumer of energy raw materials. Ways to stabilize market could be production of hydrogen and use of U238 and Th232 in the new reactors. But developments needed to influence practical industrial demand is about 30 years to be able to start to build up industrial new type nuclear power-stations and money of the order of several billion dollars. At the same time political unification has consequence on local raw material resources, which could hardly be interpreted only as the local or national ownership. Their price could sharply rise and there will be pressure to use it not only for energy production, but also as the chemical raw material. Moreover it is expected that in the half of this century the price of natural uranium will be limiting factor for the contemporary PWR reactors use and that there will be necessary to start fast breeders or use thorium fuel to cover demands. Last estimations about the oil peaking and its consequences are included. Armenia, Lithuania and Ukraine representatives expressed will to join the project. Common will is expressed in the presentation to try to understand commonly the future development and to find common solution to the future challenges (Authors)

  19. The 20th century carbon budget simulated with the CCCma earth system model CanESM1

    Science.gov (United States)

    Arora, V. K.; Boer, G. J.; Curry, C. L.; Christian, J. R.; Zahariev, K.; Denman, K. L.; Flato, G. M.; Scinocca, J. F.; Merryfield, W. J.; Lee, W. G.

    2008-12-01

    The atmosphere-land-ocean CO2 exchange for the 1850-2000 period, as simulated with the Canadian Centre for Climate Modelling and Analysis Earth System Model (CanESM1), is assessed. Land use change (LUC) emissions are estimated interactively on the basis of changes in crop area. In its default configuration, the terrestrial CO2 uptake in the model is higher and atmospheric CO2 concentration lower than observed for the 1850-2000 period. This is likely due to lower simulated LUC emissions in the model because LUC due to changes in pasture area and forest harvesting are not taken into account, although LUC emissions are highly uncertain (± 50% uncertainty). Down-regulation of photosynthesis is observed in many experimental studies that grow plants at ambient and elevated CO2. However, the role of down- regulation of terrestrial photosynthesis in the carbon cycle has not yet been explored. We examine the effect of photosynthesis down-regulation by implementing an empirical down-regulation mechanism based on experimental studies of plant growth under conditions of increased CO2. The rate of increase of terrestrial net primary productivity with CO2 in the model, after down-regulation, is consistent with that inferred from an independent study. When down-regulation is implemented, the 20th century land and ocean carbon uptake and atmospheric CO2 concentration are in good agreement with observation-based estimates. Our results show that down-regulation of terrestrial photosynthesis may play a role in terrestrial carbon uptake similar in magnitude to the uncertainty in LUC emissions. The empirical approach used here also offers a reasonable method of implementing down-regulation for coupled carbon-climate simulations in the absence of a more explicit biogeochemical representation in models.

  20. The ``System of Chymists'' and the ``Newtonian dream'' in Greek-speaking Communities in the 17th-18th Centuries

    Science.gov (United States)

    Bokaris, Efthymios P.; Koutalis, Vangelis

    2008-06-01

    The acceptance of new chemical ideas, before the Chemical Revolution of Lavoisier, in Greek-speaking communities in the 17th and 18th centuries did not create a discourse of chemical philosophy, as it did in Europe, but rather a “philosophy” of chemistry as it was formed through the evolution of didactic traditions of Chemistry. This “philosophical” chemistry was not based on the existence of any academic institutions, it was focused on the ontology of principles and forces governing the analysis/synthesis of matter and formulated two didactic traditions. The one, named “the system of chymists”, close to the Boylean/Cartesian tradition, accepted, contrary to Aristotelianism, the five “chymical” principles and also the analytical ideal, but the “chymical” principles were not under a conceptual and experimental investigation, as they were in Europe. Also, a crucial issue for this tradition remained the “mechanical” principles which were under the influence of the metaphysical nature of the Aristotelian principles. The other, close to the Boylean/Newtonian tradition, was the integrated presentation of the Newtonian “dream”, which maintained a discursive attitude with reference to the “chemical attractions”-“chemical affinities” and actualised the mathematical atomism of Boscovich, according to which the elementary texture of matter could be causally explained within this complex architecture of mathematical “ punkta”. In this tradition also coexisted, in a discursive synthesis, the “chemical element” of Lavoisier and the arguments of the new theory and its opposition to the phlogiston theory, but the “chemical affinities” were under the realm of the “physical element” as “metaphysical point”.

  1. Energy system impacts of desalination in Jordan

    OpenAIRE

    Poul Alberg Østergaard; Henrik Lund; Brian Vad Mathiesen

    2014-01-01

    Climate change mitigation calls for energy systems minimising end-use demands, optimising the fuel efficiency of conversion systems, increasing the use of renewable energy sources and exploiting synergies wherever possible. In parallel, global fresh water resources are strained due to amongst others population and wealth increase and competitive water uses from agriculture and industry is causing many nations to turn to desalination technologies. This article investigatesa Jordanian energy sc...

  2. Renewable Energy Laboratory for Lighting Systems

    OpenAIRE

    Cristian, Dumitru; Adrian, Gligor

    2010-01-01

    Nowadays, the electric lighting is an important part of our lives and also represents a significant part of the electric power consumption. Alternative solutions such as renewable energy applied in this domain are thus welcomed. This paper presents a workstation conceived for the study of photovoltaic solar energy for lighting systems by students of power engineering and civil engineering faculty. The proposed system is realized to study the generated photovoltaic solar energy parameters for ...

  3. Optimised Hybrid Integrated Renewable Energy System

    Directory of Open Access Journals (Sweden)

    Dr. Arun Sandilya

    2012-10-01

    Full Text Available A hybrid integrated renewable energy system for an isolated small community, where grid extension is considered uneconomical. This paper proposed cost optimization through dynamic matching between load and proper equipment sizing. The Matlab based computer program developed for determining the most cost effective energy source to supply required load any given time of the day. Integrated system based on green energy utilization and rural electricity development.

  4. An energy storage and regeneration system

    DEFF Research Database (Denmark)

    2006-01-01

    caverns. When the energy demand exceeds the power production capacity of the plant, the stored gases are burned and the thermal energy is converted into electricity in gas turbine generators. The regenerated electrical power is then used to supplement the output of the electric power plant to meet the......  The present invention relates to a method and a system for storing excess energy produced by an electric power plant during periods of lower energy demand than the power plant production capacity. The excess energy is stored by hydrolysis of water and storage of hydrogen and oxygen in underground...... higher level of energy demand....

  5. Smart and usable home energy management systems

    OpenAIRE

    Van Dam, S.S.

    2009-01-01

    This paper reviews research into Home Energy Management Systems (HEMS). These are intermediary products that can visualize, manage, and/or monitor the energy use of other products or whole households. HEMS have lately received increasing attention for their possible role in conserving energy within households. However, an analysis of the problem areas within household energy consumption along with a review of case studies and commercially available HEMS reveals some research gaps. If HEMS are...

  6. Smart Energy Management System Using WSN

    OpenAIRE

    Ashwini Burkul, Prof. S. S. Wagh, Supriya Bhosale

    2013-01-01

    Wireless sensor networks are rapidly gaining popularity so as to cater to the requirements of different applications. This system unifies various home appliances, smart sensors and energy technologies. The smart energy market requires two types of ZigBee networks for device control and energy management. We use IEEE 802.15.4 and ZigBee to effectively deliver solutions for a energy management and efficiency for home automation. We present the design to evaluate the performance of the home auto...

  7. Assessing Reliability in Energy Supply Systems

    OpenAIRE

    McCarthy, Ryan W.; Ogden, Joan M; Sperling, Daniel

    2008-01-01

    Reliability has always been a concern in the energy sector, but concerns are escalating as energy demand increases and the political stability of many energy supply regions becomes more questionable. But how does one define and measure reliability? We introduce a method to assess reliability in energy supply systems in terms of adequacy and security. It derives from reliability assessment frameworks developed for the electricity sector, which are extended to include qualitative considerations...

  8. Energy Prices and Internal Costs in Croatian Energy System Restructuring

    International Nuclear Information System (INIS)

    After social and political changes in 1990, energy prices in Croatia have been getting closer to the West European averages, faster than in the most European countries in transition. The energy prices for industry are almost at the West European level, while the energy prices of electricity and natural gas for households and those of the gasoline are well behind. If the population purchasing power parity (PPP) is taken into account, these relations change. While the internalization of external energy costs is under way in the developed world, it has not practically started yet in Croatia. The Croatian energy system restructuring shall require gradual adjustment of energy prices, together with multistage internalization of external energy costs. (author). 6 refs., 3 tabs., 2 figs

  9. Urban energy systems an integrated approach

    CERN Document Server

    Keirstead, James

    2013-01-01

    Energy demands of cities need to be met more sustainably. This book analyses the technical and social systems that satisfy these needs and asks how methods can be put into practice to achieve this.Drawing on analytical tools and case studies developed at Imperial College London, the book presents state-of-the-art techniques for examining urban energy systems as integrated systems of technologies, resources, and people.Case studies include:a history of the evolution of London's urban energy system, from pre-history to present daya history of the growth of d

  10. Improving energy efficiency in industrial energy systems an interdisciplinary perspective on barriers, energy audits, energy management, policies, and programs

    CERN Document Server

    Thollander, Patrik

    2012-01-01

    Industrial energy efficiency is one of the most important means of reducing the threat of increased global warming. Research however states that despite the existence of numerous technical energy efficiency measures, its deployment is hindered by the existence of various barriers to energy efficiency. The complexity of increasing energy efficiency in manufacturing industry calls for an interdisciplinary approach to the issue. Improving energy efficiency in industrial energy systems applies an interdisciplinary perspective in examining energy efficiency in industrial energy systems, and discuss

  11. Clean, competitive and customer-driven power: the case for retooling Ontario's electric power system for the 21st century

    International Nuclear Information System (INIS)

    The Independent Power Producers' Society of Ontario (IPPSO) outlined their proposals for the transformation of Ontario's electricity system. IPPSO advocated unbundling of Ontario Hydro (by separating the generation and transmission functions and by giving customers the right to purchase power in the spot market), the re-introduction of competition, public accountability, honest pricing, and sustainable energy development. They suggested that 20% of all new electrical energy production in Ontario should be procured from renewable generation technologies. The highest efficiency and renewable initiatives should be the most aggressively pursued. Since re-structuring Ontario's electric power system involves important considerations of cost, benefits, fiscal responsibility, rate equity and environmental protection, the public should have a vital, direct voice in the decision making process

  12. Ministerial Presentation: France [International Ministerial Conference on Nuclear Energy in the 21. Century: Addressing Energy Needs and Environmental Challenges, Beijing (China), 20-22 April 2009

    International Nuclear Information System (INIS)

    nuclear energy, particularly developing nations (cf. the declarations made during the conference) Efforts by multilateral bodies such as the IAEA and the OECD's Nuclear Energy Agency to help these states develop a peaceful and responsible use of nuclear energy are crucial. In particular, I would like to point out the IAEA's vital work that led to the publication of ''Milestones in the Development of a National Infrastructure for Nuclear Power''. France's public services, companies, universities and research centres contribute their expertise and play an active part in this international cooperation, the goal of which is to share the benefits of peaceful nuclear energy use, while strictly complying with safety, security and non-proliferation standards. For France, nuclear energy rests on a sound technological and economic foundation France acquired considerable experience with its first- and second- generation reactors, and today we are in a position to put ground- breaking advances to work within a tried and true technology; I am speaking of the third-generation EPR reactors, and France's global offer that encompasses every part of the nuclear cycle. We believe that the fourth-generation reactors are quite promising, and France is taking an active role in international R and D efforts concerning the systems of the future. We believe in the promising long term developments of the ITER project, hosted by France. The IAEA is providing a remarkable contribution to it. Finally, our experience, backed by a number of international studies, shows that nuclear energy is economically competitive and offers an attractive alternative to fossil fuels. All of these points explain why a number of States are anxious to develop this form of energy. However, we must always keep in mind that nuclear energy implies certain responsibilities, and must form part of an overarching energy strategy. I would like to point out straight away the strict compliance with the agreements made in the area

  13. The Evolution of Organic Carbon in Chinese Mollisol Under Different Farming Systems: Validation and Prediction by Using Century Model

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Soil organic carbon (SOC) is an important indicator of soil degradation process. In this study, the long-term SOC evolution in Chinese mollisol farmland was simulated and predicted by validating, analyzing, processing and assorting concerning data, based on clarifying parameters of Century model need, combined with best use of recorded data of field management, observed data of long-term experiments, climate, soil, and biology, and achieved results from Hailun Agro-Ecological Experimental Station, Chinese Academy of Sciences. The results were showed as follows: Before reclamation, SOC content was around 58.00 g kg-1. SOC content dropped quickly in early years, and then decreased slowly after reclamation. SOC content was around 34.00 g kg-1 with a yearly average rate of 8.91% decrease before long-term experiments was established. After a long-term experiment, SOC would change under different farming systems. Shift farming system changed as follows: By 20-year model simulation, SOC content decreased from 34.03 to 30.19 g kg-1, with a yearly average rate of 5.97‰; by 100-year model simulation, SOC content decreased to 24.31 g kg-1, with a yearly average rate of 3.36‰. Organic fanning system changed as follows: By 20-year model simulation, SOC content decreased slowly from 34.03 to 33.39 g kg-1, with a yearly average rate of 0.95‰, 5‰ less than that of shift farming system; by 100-year model simulation, SOC content decreased to 32.21 g kg-1, with a yearly average rate of 0.55‰. "Petroleum" farming system changed as follows: By 20-year model simulation, SOC content decreased from 34.03 to 32.88 g kg-1, with a yearly average rate of 1.72‰, much more than that of organic farming system; by 100-year model simulation, SOC content decreased to 30.89 g kg-1, with a yearly average rate of 0.96‰. Combined "petroleum"-organic farming system changed as follows: By 20-year model simulation, SOC content was increased slightly; by 100-year model simulation, SOC content

  14. SMES for wind energy systems

    Science.gov (United States)

    Paul Antony, Anish

    Renewable energy sources are ubiquitous, wind energy in particular is one of the fastest growing forms of renewable energy, yet the stochastic nature of wind creates fluctuations that threaten the stability of the electrical grid. In addition to stability with increased wind energy, the need for additional load following capability is a major concern hindering increased wind energy penetration. Improvements in power electronics are required to increase wind energy penetration, but these improvements are hindered by a number of limitations. Changes in physical weather conditions, insufficient capacity of the transmission line and inaccurate wind forecasting greatly stymie their effect and ultimately lead to equipment damage. With this background, the overall goal of this research effort is to pitch a case for superconducting magnetic energy storage (SMES) by (1) optimally designing the SMES to be coupled with wind turbines thus reducing wind integration challenges and (2) to help influence decision makers in either increasing superconducting wire length/fill factor or improving superconducting splice technology thereby increasing the storage capacity of the SMES. Chapter 1 outlines the scope of this thesis by answering the following questions (1) why focus on wind energy? (2) What are the problems associated with increasing wind energy on the electric grid? (3) What are the current solutions related to wind integration challenges and (4) why SMES? Chapter 2, presents a detailed report on the study performed on categorizing the challenges associated with integrating wind energy into the electric grid. The conditions under which wind energy affected the electric grid are identified both in terms of voltage stability and excess wind generation. Chapter 3, details a comprehensive literature review on the different superconducting wires. A technology assessment of the five selected superconductors: [Niobium Titanium (NbTi), Niobium Tin (Nb3Sn), Bismuth strontium calcium

  15. A person-focused model of care for the twenty-first century: a system-of-systems perspective.

    Science.gov (United States)

    Greene, Robert A; Dasso, Edwin; Ho, Sam; Genaidy, Ash M

    2014-06-01

    The US health care system is challenged to provide high-quality care and is burdened with unsustainable expenditures, making it difficult for health care participants (patients, payers, providers, caregivers) to create value. This communication presents the theoretical foundation for a person-focused model of care that addresses a number of these challenges. The model integrates aspects of prior models of chronic care with new empiric findings and complex adaptive system (CAS) theory. The model emphasizes the relationship among all health care stakeholders. The health care delivery process is examined in terms of the role of each stakeholder and the value each adds to and receives from the process. The authors present pilot results illustrating the implications of CAS theory in regard to multi-morbidity, disease management programs, multi-morbid households, and person- and household-focused care. The model incorporates the physical, mental, and social dimensions of health, and operationalizes an individual patient's health as a CAS, identifying CASs for each of the other stakeholders as well. Health care can then be conceptualized as a system-of-systems with a person's health as its output. Deploying the model need not require major infrastructure investments or changes. It can be implemented by repurposing, aligning, and better integrating currently available interventions. The authors believe that the model creates not only survival value (health) but also purposeful value. The model offers a unifying focus for all participants in the health care delivery process, thereby constructing a health care system that is structurally person-focused and meaningful for all participants. PMID:24720637

  16. Ministerial Presentation: Egypt. Speech of H.E. Dr. Hassan Younes [International Ministerial Conference on Nuclear Energy in the 21. Century: Addressing Energy Needs and Environmental Challenges, Beijing (China), 20-22 April 2009

    International Nuclear Information System (INIS)

    First, I would like to express my sincere appreciation to our host country China, for making possible this International Ministerial Conference. Also, I would like to commend the efforts of the International Atomic Energy Agency (IAEA) and Nuclear Energy Agency (NEA) of the (OECD) in organizing this important conference. Egypt was one of the countries to realize that nuclear power could be utilized to secure the supply of electricity and fresh water. Several attempts haven't been materialized in the last 3 decades due to different factors. Recently, Egypt has reconsidered the nuclear power as an option to supply electricity. Egypt was motivated to consider the introduction of nuclear power by the following factors: Steadily increasing demand for electricity; Egypt is not a rich country of indigenous fossil energy resources, and almost full utilized its hydro power resources; Instability in the prices of fossils energy resources. Introducing the nuclear power alongside other forms of energy resources will maximize the usage of these resources; Nuclear energy is a technically and economically viable source of energy. In the 21st century, these reasons have not only retained their validity, but have been also reinforced by the developments which have been taking place. Egypt electricity demand will continue to increase in the foreseeable future. Currently, electricity reaches over 99% of the Egypt's population and it is planned to add 58 GW by the year 2027. The challenges of meeting these increasing demand will have to be met in the best possible ways within the prevailing constraints. These include: Increase the share of renewable energy, in electricity generation to 20% by the year 2020. By the year 2020 the total wind farm capacities will be at least 7200 MW, of which 63% would be constructed by private sector. A 140-MW solar-thermal power plant is currently under construction, and is expected to be connected to the grid by the end of year 2010; Conservation of

  17. Ministerial Presentation: Japan. Statement by H. E. Ms. Seiko Noda [International Ministerial Conference on Nuclear Energy in the 21. Century: Addressing Energy Needs and Environmental Challenges, Beijing (China), 20-22 April 2009

    International Nuclear Information System (INIS)

    On behalf of the Government of Japan, I would like to offer my warmest congratulations on the successful holding of the International Ministerial Conference on Nuclear Energy in the 21st Century, here in Beijing. The importance of nuclear energy as a measure against global warming. We are currently facing serious challenges. It is vital to the prosperity of humanity that all countries strive for coordination and cooperation to resolve those issues such as scarcity of food, poverty, and terrorism, in addition to the economic crisis which has shaken up the world economy since last year. In particular, measures against global warming are key issues, to which all countries must unite and respond promptly, effectively and sustainably over an extended period. At the Annual Meeting of the World Economic Forum (Davos Meeting) in this January, Prime Minister of Japan, Mr. Taro Aso, mentioned the goal of reducing the global greenhouse-gas emissions at least by half, by the year of 2050. He stressed that the Post-Kyoto framework should be all inclusive to achieve this goal, with all the big emitters joining as responsible partners. The current year is a crucial one, in which to establish the framework for 2013 and beyond. The cooperation of all countries is required more than ever. I believe that, in order to achieve a significant reduction in global greenhouse-gas emissions while ensuring secure energy supply, the expansion of the peaceful use of nuclear energy is essential, along with the maximum implementation of other effective measures such as energy conservation, energy efficiency improvement and the use of renewable energy. Recently, this role of nuclear energy has been widely recognized over the world. In the 4th Assessment Report, published in 2007 by the Intergovernmental Panel on Climate Change (IPCC), nuclear energy, which emits minimal greenhouse gases, is described as one of major mitigation technologies in the energy supply area. The International Energy Agency

  18. Synergy between indigenous knowledge systems, modern health care system and scientific research – a vision for the 21st century

    Directory of Open Access Journals (Sweden)

    Fhumulani Mavis Mulaudzi

    2001-04-01

    Full Text Available Research already conducted in African countries indicates that the majority of patients still seek help from the traditional indigenous health care systems. Opsomming Navorsing wat reeds in Afrika-lande onderneem is, dui aan dat die meerderheid pasiënte steeds hulp soek vanaf die tradisioneel inheemse gesondheidsorgsisteme. *Please note: This is a reduced version of the abstract. Please refer to PDF for full text.

  19. Energy requirements in pressure irrigation systems

    OpenAIRE

    Sánchez Calvo, Raúl; Rodríguez Sinobas, Leonor; Juana Sirgado, Luis; Laguna Peñuelas, Francisco; Castañon Lion, Guillermo; Gil Rodríguez, María; Benitez Buelga, Javier

    2012-01-01

    Modernization of irrigation schemes, generally understood as transformation of surface irrigation systems into pressure –sprinkler and trickle- irrigation systems, aims at, among others, improving irrigation efficiency and reduction of operation and maintenance efforts made by the irrigators. However, pressure irrigation systems, in contrast, carry a serious energy cost. Energy requirements depend on decisions taken on management strategies during the operation phase, which are co...

  20. Energy-efficient fault-tolerant systems

    CERN Document Server

    Mathew, Jimson; Pradhan, Dhiraj K

    2013-01-01

    This book describes the state-of-the-art in energy efficient, fault-tolerant embedded systems. It covers the entire product lifecycle of electronic systems design, analysis and testing and includes discussion of both circuit and system-level approaches. Readers will be enabled to meet the conflicting design objectives of energy efficiency and fault-tolerance for reliability, given the up-to-date techniques presented.

  1. Energy utilization evaluation of CCHP systems

    Energy Technology Data Exchange (ETDEWEB)

    Li, H.; Fu, L.; Geng, K.; Jiang, Y. [Department of Building Science, Tsinghua University, Beijing (China)

    2006-07-01

    Combined cooling, heating and power (CCHP) is getting more attention for its energy saving. However, until now it is not clear yet that how to evaluate the energy utilization of CCHP scientifically and if energy saving is intrinsic to CCHP systems. One of the reasons for this lies in the inappropriate selection of reference situations that making the comparison between the gas cogeneration and the separate production fueled by coal. Another is that the ideal efficiencies of CCHP units are often cited and the differences of various practical performances are often ignored in the comparison. In this paper, an appropriate reference situation is suggested and the practical statistical performances of various units are introduced. Then, a static calculation methodology for evaluating the primary energy consumption for CCHP and separate productions is presented. Fuel energy saving ratio (FESR) definition and the boundary conditions that have to be met by CCHP systems for being energy saving to separate productions are given. Moreover, the energy saving performances of various types and sizes systems in heating and cooling modes are analyzed. Energy saving is not intrinsic but conditional to CCHP systems. The systems with the larger electric power have the higher energy saving potential. (author)

  2. Energy utilization evaluation of CCHP systems

    Energy Technology Data Exchange (ETDEWEB)

    Hui Li; Lin Fu; Kecheng Geng; Yi Jiang [Tsinghua Univ., Beijing (China). Dept. of Building Science

    2006-03-15

    Combined cooling, heating and power (CCHP) is getting more attention for its energy saving. However, until now it is not clear yet that how to evaluate the energy utilization of CCHP scientifically and if energy saving is intrinsic to CCHP systems. One of the reasons for this lies in the inappropriate selection of reference situations that making the comparison between the gas cogeneration and the separate production fueled by coal. Another is that the ideal efficiencies of CCHP units are often cited and the differences of various practical performances are often ignored in the comparison. In this paper, an appropriate reference situation is suggested and the practical statistical performances of various units are introduced. Then, a static calculation methodology for evaluating the primary energy consumption for CCHP and separate productions is presented. Fuel energy saving ratio (FESR) definition and the boundary conditions that have to be met by CCHP systems for being energy saving to separate productions are given. Moreover, the energy saving performances of various types and sizes systems in heating and cooling modes are analyzed. Energy saving is not intrinsic but conditional to CCHP systems. The systems with the larger electric power have the higher energy saving potential. (author)

  3. Power Electronics for Renewable Energy Systems

    DEFF Research Database (Denmark)

    Choi, U. M.; Lee, K. B.; Blaabjerg, Frede

    2012-01-01

    The use of renewable energy sources are increased because of the depletion of natural resources and the increasing pollution level from energy production. The wind energy and the solar energy are most widely used among the renewable energy sources. Power electronics is needed in almost all kinds...... of renewable energy system. It controls the renewable source and interfaces with the load effectively, which can be grid-connected or van work in stand-alone mode. In this presentation, overview of wind and photovoltaic energy systems are introduced. Next, the power electronic circuits behind the most common...... wind and photovoltaic configurations are discussed. Finally, their controls and important requirements for grid connection are explained....

  4. Distributed energy systems with wind power and energy storage

    Energy Technology Data Exchange (ETDEWEB)

    Korpaas, Magnus

    2004-07-01

    The topic of this thesis is the study of energy storage systems operating with wind power plants. The motivation for applying energy storage in this context is that wind power generation is intermittent and generally difficult to predict, and that good wind energy resources are often found in areas with limited grid capacity. Moreover, energy storage in the form of hydrogen makes it possible to provide clean fuel for transportation. The aim of this work has been to evaluate how local energy storage systems should be designed and operated in order to increase the penetration and value of wind power in the power system. Optimization models and sequential and probabilistic simulation models have been developed for this purpose. Chapter 3 presents a sequential simulation model of a general wind hydrogen energy system. Electrolytic hydrogen is used either as a fuel for transportation or for power generation in a stationary fuel cell. The model is useful for evaluating how hydrogen storage can increase the penetration of wind power in areas with limited or no transmission capacity to the main grid. The simulation model is combined with a cost model in order to study how component sizing and choice of operation strategy influence the performance and economics of the wind-hydrogen system. If the stored hydrogen is not used as a separate product, but merely as electrical energy storage, it should be evaluated against other and more energy efficient storage options such as pumped hydro and redox flow cells. A probabilistic model of a grid-connected wind power plant with a general energy storage unit is presented in chapter 4. The energy storage unit is applied for smoothing wind power fluctuations by providing a firm power output to the grid over a specific period. The method described in the chapter is based on the statistical properties of the wind speed and a general representation of the wind energy conversion system and the energy storage unit. This method allows us to

  5. Projections of oceanic N2O emissions in the 21st century using the IPSL Earth system model

    Science.gov (United States)

    Martinez-Rey, J.; Bopp, L.; Gehlen, M.; Tagliabue, A.; Gruber, N.

    2015-07-01

    The ocean is a substantial source of nitrous oxide (N2O) to the atmosphere, but little is known about how this flux might change in the future. Here, we investigate the potential evolution of marine N2O emissions in the 21st century in response to anthropogenic climate change using the global ocean biogeochemical model NEMO-PISCES. Assuming nitrification as the dominant N2O formation pathway, we implemented two different parameterizations of N2O production which differ primarily under low-oxygen (O2) conditions. When forced with output from a climate model simulation run under the business-as-usual high-CO2 concentration scenario (RCP8.5), our simulations suggest a decrease of 4 to 12 % in N2O emissions from 2005 to 2100, i.e., a reduction from 4.03/3.71 to 3.54/3.56 TgN yr-1 depending on the parameterization. The emissions decrease strongly in the western basins of the Pacific and Atlantic oceans, while they tend to increase above the oxygen minimum zones (OMZs), i.e., in the eastern tropical Pacific and in the northern Indian Ocean. The reduction in N2O emissions is caused on the one hand by weakened nitrification as a consequence of reduced primary and export production, and on the other hand by stronger vertical stratification, which reduces the transport of N2O from the ocean interior to the ocean surface. The higher emissions over the OMZ are linked to an expansion of these zones under global warming, which leads to increased N2O production, associated primarily with denitrification. While there are many uncertainties in the relative contribution and changes in the N2O production pathways, the increasing storage seems unequivocal and determines largely the decrease in N2O emissions in the future. From the perspective of a global climate system, the averaged feedback strength associated with the projected decrease in oceanic N2O emissions amounts to around -0.009 W m-2 K-1, which is comparable to the potential increase from terrestrial N2O sources. However

  6. Thorium Molten-Salt Nuclear Energy Synergetics system for the global energy demand

    International Nuclear Information System (INIS)

    In this century, we have to solve the two antithetical energy problems. The one is a huge and steep energy demand by the population explosion and the other is a CO2 emission reduction for preventing global warming. It is clear that innovative nuclear system satisfying the following conditions can only solve these problems: adequate safety; nuclear proliferation resistance and safeguards; economic competitiveness; improved radio-waste management; resource utilization, and flexible applicability. To meet these conditions, a new concept THORIMS-NES (Thorium Molten-Salt Nuclear Energy Synergetics) has been proposed, which is composed of simple molten-salt reactors (FUJI) and Accelerator Molten-Salt Breeders (AMSB) which produce the fissile 233U from Th and feed it to the nearly self-sustaining molten-salt reactor FUJI. A number of FUJIs can use 239Pu as part of their fissile fuel along with the fertile Th thereby eliminating the excess Pu in the world. A nuclear option for Brazil using this system is presented. (author)

  7. Tunisia Renewable Energy Project systems description report

    Science.gov (United States)

    Scudder, L. R.; Martz, J. E.; Ratajczak, A. F.

    1986-01-01

    In 1979, the Agency for International Development (AID) initiated a renewable energy project with the Government of Tunisia to develop an institutional capability to plan and institute renewable energy technologies in a rural area. The specific objective of the district energy applications subproject was to demonstrate solar and wind energy systems in a rural village setting. The NASA Lewis Research Center was asked by the AID Near East Bureau to manage and implement this subproject. This report describes the project and gives detailed desciptions of the various systems.

  8. Public engagement with energy system change

    International Nuclear Information System (INIS)

    Public acceptability represents a major challenge for delivery of energy policy, in the UK and internationally. This article sets out three arguments about public engagement with energy transitions derived from research into public perspectives of whole energy system change. It argues for the need to consider values that underlay preferences, the importance of understanding problem and solution framing, and the significance of considering views on process as well as outcomes. Overall, insights are offered into how to better approach public engagement with energy system change.

  9. THE CHINA’S ENERGY SECURITY IN THE ASIA-PACIFIC REGION IN THE 21ST CENTURY

    Directory of Open Access Journals (Sweden)

    Evgeniy Sergeevich Krasantsov

    2013-10-01

    Full Text Available The main objective of this article was to determine the level of the Chinese energy security that was built up for last several decades. In order to reach the set aim the author figured the current condition of the energy sector within the leading states of the Asia-Pacific Region and compared it with a similar condition ofChina. The condition’s characteristics included the following: Chinese energy balance, oil production, import and consumption, energy efficiency, CO2 emissions, electricity amount produced by using the renewable energy sources (hydropower, wind energy, sun energy and nuclear energy. In addition the authorities’ plans for the expansion of the mentioned renewable and nuclear energy production were as well discovered. The probable threats of the energy security and possible obstacles for the extensive means of sustaining the country’s energy security were also brought up.Statistical, comparative and analytical methods were applied in the process of the current research. As a result the PRC was found to be at a threshold to energetic crisis. In order to avoid the scenario two innovative methods were proposed as the means of avoiding the possible future crisis and sustaining energy security.The research results can be applied in determining the domestic and foreign policy of China as well as the foreign policies of the PRC’s energetic partners both within the Asia-Pacific Region and beyond its borders. DOI: http://dx.doi.org/10.12731/2218-7405-2013-7-39

  10. Miniature photovoltaic energy system for lighting

    International Nuclear Information System (INIS)

    In this project a miniature photovoltaic energy system has been designed and developed, that may be used in remote areas and villages for lighting purposes. System sizing is the important part of the project because it affects the cost of the system. Therefore, first of all system sizing has been done. For conversion of dc voltage of the battery into ac voltage, an inverter has been designed. To charge the battery when the sun is not shining, a standby system has been developed using a bicycle and dynamo. To indicate the battery's state of charge and discharge, a battery monitoring circuit has also been developed. Similarly, to protect the battery from over discharging, a battery protection circuit has been designed. In order to measure how much energy is going from standby system to the battery, an efficient dc electronic energy meter has been designed and developed. The working of the overall system has been tested and found to give good performance. (author)

  11. Policies for 100% Renewable Energy Systems

    DEFF Research Database (Denmark)

    Hvelplund, Frede

    2014-01-01

    fluctuating, abundant and clean energy sources. “Stored” fossil fuels can be used when needed; fluctuating energy sources must be captured when available and transformed to meet the energy needs of society in the right amounts and at the right time. We are amidst this change. Renewable energy has come of age......The official Danish energy policy goal is both to increase the wind power share of electricity consumption from 33% in 2014 to 50% by 2020 and to have a 100% renewable energy based energy system by 2050. This is a huge technological change from stored, scarce and polluting fossil fuels to...... and is no longer a minor technology experimenting in the corner of the energy scene, but has become a large new technology taking away considerable market shares from the old fossil fuel technologies....

  12. Industrial Compressed Air System Energy Efficiency Guidebook.

    Energy Technology Data Exchange (ETDEWEB)

    United States. Bonneville Power Administration.

    1993-12-01

    Energy efficient design, operation and maintenance of compressed air systems in industrial plants can provide substantial reductions in electric power and other operational costs. This guidebook will help identify cost effective, energy efficiency opportunities in compressed air system design, re-design, operation and maintenance. The guidebook provides: (1) a broad overview of industrial compressed air systems, (2) methods for estimating compressed air consumption and projected air savings, (3) a description of applicable, generic energy conservation measures, and, (4) a review of some compressed air system demonstration projects that have taken place over the last two years. The primary audience for this guidebook includes plant maintenance supervisors, plant engineers, plant managers and others interested in energy management of industrial compressed air systems.

  13. Wind Energy Conversion Systems Technology and Trends

    CERN Document Server

    2012-01-01

    Wind Energy Conversion System covers the technological progress of wind energy conversion systems, along with potential future trends. It includes recently developed wind energy conversion systems such as multi-converter operation of variable-speed wind generators, lightning protection schemes, voltage flicker mitigation and prediction schemes for advanced control of wind generators. Modeling and control strategies of variable speed wind generators are discussed, together with the frequency converter topologies suitable for grid integration. Wind Energy Conversion System also describes offshore farm technologies including multi-terminal topology and space-based wind observation schemes, as well as both AC and DC based wind farm topologies. The stability and reliability of wind farms are discussed, and grid integration issues are examined in the context of the most recent industry guidelines. Wind power smoothing, one of the big challenges for transmission system operators, is a particular focus. Fault ride th...

  14. Model Predictive Control for Smart Energy Systems

    DEFF Research Database (Denmark)

    Halvgaard, Rasmus

    supply electricity reliably to both residential and industrial consumers around the clock. More and more fluctuating renewable energy sources, like wind and solar, are integrated in the power system. Consequently, uncertainty in production starts to affect an otherwise controllable power production...... actors. Chapter 2 provides linear dynamical models of Smart Grid units: Electric Vehicles, buildings with heat pumps, refrigeration systems, solar collectors, heat storage tanks, power plants, and wind farms. The models can be realized as discrete time state space models that fit into a predictive......In this thesis, we consider control strategies for flexible distributed energy resources in the future intelligent energy system – the Smart Grid. The energy system is a large-scale complex network with many actors and objectives in different hierarchical layers. Specifically the power system must...

  15. Seasonal energy storage - PV-hydrogen systems

    Energy Technology Data Exchange (ETDEWEB)

    Leppaenen, J. [Neste Oy/NAPS (Finland)

    1998-10-01

    PV systems are widely used in remote areas e.g. in telecommunication systems. Typically lead acid batteries are used as energy storage. In northern locations seasonal storage is needed, which however is too expensive and difficult to realise with batteries. Therefore, a PV- battery system with a diesel backup is sometimes used. The disadvantages of this kind of system for very remote applications are the need of maintenance and the need to supply the fuel. To overcome these problems, it has been suggested to use hydrogen technologies to make a closed loop autonomous energy storage system

  16. Use of geothermal energy for heating systems

    OpenAIRE

    REZNICHENKO, ARTEM

    2014-01-01

    TFG en intercambio académico. Jade Hochschule (Wilhelmshaven/Oldenburg/Elsfleth) [en] This project makes a study of heat extraction from the soil in order to provide heat to a building. This energy is renewable and clean. Low temperature geothermal energy has very low levels of use. In the last decades, the use of renewable energy is growing exponentially. The biggest part of energy consumption goes to heating systems, that is why the use of geothermal energy can save lots of natural resou...

  17. Implementation of Renewable Energy Systems in Denmark

    DEFF Research Database (Denmark)

    Meyer, Niels I

    1997-01-01

    Denmark has been one of the first countries in the world to commit itself to a sustainable energy development. This has been substantiated by two official action plans from 1990 and 1996 with emphasis on energy efficiency and supply systems based on renewable energy. In year 2005, renewable energ...... sources are planned to cover 12-14% and in year 2030 about 35% of total Danish energy demand. This paper reviews the experiences with implementation of renewable energy in Denmark with a focus on wind power and biomass....

  18. Hydrogen based energy storage for solar energy systems

    Energy Technology Data Exchange (ETDEWEB)

    Vanhanen, J.P.; Hagstroem, M.T.; Lund, P.H. [Helsinki Univ. of Technology, Otaniemi (Finland). Dept. of Engineering Physics and Mathematics; Leppaenen, J.R.; Nieminen, J.P. [Neste Oy (Finland)

    1998-12-31

    Hydrogen based energy storage options for solar energy systems was studied in order to improve their overall performance. A 1 kW photovoltaic hydrogen (PV-H2) pilot-plant and commercial prototype were constructed and a numerical simulation program H2PHOTO for system design and optimisation was developed. Furthermore, a comprehensive understanding of conversion (electrolysers and fuel cells) and storage (metal hydrides) technologies was acquired by the project partners. The PV-H{sub 2} power system provides a self-sufficient solution for applications in remote locations far from electric grids and maintenance services. (orig.)

  19. Potential options to greenize energy systems

    International Nuclear Information System (INIS)

    In this paper, we introduce a new thermodynamic concept of greenizing energy systems and propose a new greenization factor which is defined as the amount of environmental impact reduction by the system greenized divided by the reference environmental impact for the original (reference) case. A greenization factor of 1 indicates that the system is fully greenized case in which its environmental impact is zero or minimal. The greenization options of energy systems are studied extensively for an actual coal-fired power plant in Ontario. Multiple case studies are presented under various greenization criteria. The greenization factors and sustainability indexes for each option are determined and presented comparatively. The results can be extended to other energy systems, processes and applications (e.g., fossil fuel based power plants and transportation vehicles) for assessment purposes. -- Highlights: ► Proposal of a novel approach to greenize energy systems. ► Development of a new greenization factor. ► Greenization assessment of various energy systems. ► Multiple case studies to show how to greenize energy systems.

  20. Energy efficient residential house wall system

    International Nuclear Information System (INIS)

    The energy consumption and greenhouse gas emission by the residential housing sector are considered to be one of the largest in economically developed countries. The larger energy consumption and greenhouse gas emission not only put additional pressure on finite fossil fuel resources but also cause global warming and climate change. Additionally, the residential housing sector will be consuming more energy as the house demand and average house floor area are progressively increasing. With currently used residential house wall systems, it is hard to reduce energy consumption for ongoing house space heating and cooling. A smart house wall envelope with optimal thermal masses and insulation materials is vital for reducing our increasing energy consumption. The major aim of this study is to investigate thermal performance and energy saving potential of a new house wall system for variable climate conditions. The thermal performance modelling was carried out using commercially developed software AccuRate®. The findings indicate that a notable energy savings can be accomplished if a smart house wall system is used. -- Highlights: • Smart house wall system. • Thermal performance modelling and star energy rating. • Energy savings and greenhouse gas reduction