Beim, Anne; Ryborg Jørgensen, Thomas; Vibæk, Kasper Sánchez
rationel synsvinkel, hvor der fokuseres på mængder, produktionsomkostninger og rentabilitet. Arkitektonisk kvalitet og industrielle byggesystemer forsøger at tale med en anden stemme ved at fokusere på arkitektoniske potentialer i udviklingen af det industrielle byggeri. Arkitektonisk kvalitet og...... industrielle byggesystemer ser på det aktuelle danske etageboligbyggeri i en række cases. I valget af det bagvedliggende byggesystem eller -princip lægges kimen til de arkitektoniske muligheder som efterfølgende kan udfoldes. Måden at bygge på er altafgørende for variationen og fleksibilitet, hvad angår...
In this project new solutions have been developed for buildings with concrete facade panels without ribs at window reveals and at horizontal joints, corresponding to panels with an un-broken insulation layer and limited thermal bridge effect. New general solutions for the mounting of windows have been developed together with airtight covering solutions at the window reveal based upon added window board and a separate vapor barrier. At the same time detailed calculations of the heat loss effects at the window-wall joint and foundation have been carried out and new solutions that reduce the heat loss substantially have also been shown. The new developed standard solutions are obvious means to meet the expected future energy demands in the new Building Regulations expected in 2005. The project has revealed that it is possible to obtain significant thermal improvements with only a minor increase in the insula-tion thickness. The new and, in many ways, better solutions will mean added costs regarding mounting of windows, stronger fittings etc. but the effect of a standardization of the window-placement could reduce those additional costs considerably. The total life cycle costs regard-ing these new types of concrete facade panels are economically reasonable. (au)
Measurements of gross energy consumption in new buildings meeting Danish building Regulations 2005. Project summary; Maeling af bruttoenergiforbrug i nybyggeri svarende til BR2005 energikrav. Projektresume
During the heating season of 2003/2004, gross energy measurements have been made on a number of single-family houses that represent ordinary building systems in Denmark and meet future stricter energy requirements in new energy regulations of the building regulations. All the houses have floor heating and mechanical ventilation with heat recovery. When new energy regulations are introduced in the building regulations, the primary energy requirements on buildings will be based on the gross energy consumption, corresponding to the total energy consumption except electricity consumption for appliances. In relation to this, the object of the project has been to document and analyse the test result that have come to light and to compare with future requirements on the gross energy consumption. The electricity consumption of appliances is interesting too, however, as this has an effect on the heat demand. The object of the project has therefore also been to gather operation experience for the electricity consuming equipment in general with a view to throwing light on its influence on the heat demand, including to investigate how large a part of the electricity consumption proves of use in the heating of the house, and more overriding how the electricity consumption influences the heat consumption. (au)
Ryborg Jørgensen, Thomas
Bearbejdet uddrag fra 'Arkitektonisk kvalitet & industrielle byggesystemer' Kunstakademiets Arkitektskole 2007 (CINARK Forskning). Papiret er anvendt i forbindelse med adskillelige arkitekturteoretiske studiekredse....
This report concludes the first phase of the project 'Optimisation of the building envelope as well as heating and ventilation system in a one family house with respect to energy consumption, indoor climate and economy'. The report heads of with a short description of the background and purpose of the project. In order to perform an optimisation of an insulation thickness in a building envelope component, it is necessary to first calculate the heat transfer coefficients for the component. In the report these calculations are described in detail for all components. Calculations were performed for building envelope components as they were before and after the optimisation. The building envelope components are described, and together with the detailed drawings given in the appendix, this presents a good overview of the constructions in their optimised state. The calculations are performed using PC-programs HEAT2 and HEAT3 for 2- and 3-dimensional heat flow, i.e. line and point heat loss coefficients, and the rules given in DS418 for 1-dimensional heat flow, i.e. U-values. The results of the calculations are summarised and the expected dimensioning heat loss is calculated. Results for the house as it was before the optimisation are also given for comparison. The optimal insulation thicknesses are calculated for each building envelope component (external wall, slab floor and roof), and with this background the chosen insulation thicknesses are discussed. In order to be able to evaluate whether or not the optimised house will fulfil the purpose of the project, i.e. reducing the energy consumption by 33 % and 50 % compared to the present frame for energy consumption, a series of simulations are performed. The simulations are performed using the PC-program tsbi3. In addition to the calculation of the building as defined by the optimisation, a number of parameters were analysed in order to evaluate the importance of different aspects of the building envelope. The window types, heat recovery unit efficiency, infiltration and floor heating system temperature are some of the parameters that are evaluated. Furthermore, a series of simulations are performed where different aspects of the building are changed in order to reduce the heat consumption to 50 % compared to the present frame for energy consumption. (EHS)
Thyholt, Marit; Dokka, Tor Helge; Schild, Peter; Grini, Catherine; Mysen, Mads; Sartori, Igor
The National Office of Building Technology and Administration (BE) desired to review the consequences of different levels of ambition for requirements for heat gaining from vent air, as well as a possible requirement for energy efficient design of building fronts. In addition the energy scope in the regulation (TEK2007) should be adjusted according to the final establishment of a new calculation standard (Norwegian Standard - NS 3031:2007). A statement on these subjects has been carried out at SINTEF Byggforsk, and is described in this report. Adjustments of framework regulations.There are only minor differences between adjusted calculations according to NS 3031 and the original energy framework calculations, i.e. the difference for net energy need amounts to the size of 0 to 6 percent. Heat gain.The report shows that it is possible - both from techical and financial considerations - to increase the requirement level for heat gain from vent air for most categories of buildings. This implies a sharpening of the annual median temperature efficiency from 70 % to 80 %, for all building categories, except from hospitals, institutions and light industry/workshops. A possible sharpening of regulations for heat gain in houses has not been evaluated. Depending on building category a sharpening of regulations for heat gain from vent air will imply that net energy need will be reduced on a scale of 20 to 30 kWh/m2 per annum. The report demonstrates that despite a possible sharpening of the requirements on energy efficiency for heat recovery devices does not prevent the use of large areas of windows and window panes. Vulnerability analyses show that deviations from the prerequisites in the basis for the energy framework concerning air quantities and air temperatures give the possibility of weakening the building's heating characteristics. Building fronts. Different methods for added requirements for building fronts have been examined. The aim has been to find methods and level of requirements, in order to counter the negative effects which the front may cause on the indoor air. Cold down draught from windows and sunshine both contribute to a higher need for heating and cooling than the calculated need for energy. The most suitable methods found in this elucidation are: When the aim is to limit the need for heating. Introduce minimum requirements (maximum values) for the average U-value for building fronts and that the requirement levels are calculated for the specific building. The possibility of achieving the required level will thus be the same for different building categories and building designs. Which minimum level one should arrive at concerning the average U-value depends on what limitations the regulations should put on a maximum area for windows, window panes (and doors). Such limitations will of course have an important influence on the building's architecture. How 'stringent' and excact this regulation should be, is not to be discussed here. Still it would probably be suitable to base the minimum requirement on a level closer to TEK 8-21 a) Energy actions - than TEK 8-21 c) Minimum levels. When the aim is to limit the need for cooling. Introduce minimum requirements (maximum values) to the product of glass area/sun charged floor area and the system sun factor, and that the requirement level is set at 0,03 for all categories of buildings, except for small buildings which should be excempted from this requirement. Both methods should be assessed for introduction in TEK. The combination of building fronts and heat regain. A sharpening of requirements to energy efficiency alone is not sufficient when it comes to limit the building fronts contribution to cold air flow and overheating. Combined with the ensuing energy need for heating and cooling it would be suitable to supplement with the mentioned types of requirements to more sturdy building fronts. (EW)
Rapporten fokuserer på såkaldte systemleverancer - større sammenhængende byggesystemer (eller moduler), der fremstilles industrielt. Ideen er, at systemleverancer både som processtrukturer, forretningsmodeller og arkitektoniske designkoncepter af høj kvalitet, kan være et vægtigt middel til en me...
Villaume, René Domine; Ørstrup, Finn Rude
Projektet undersøger potentialet for interaktiv 3D design via Internettet. Arkitekt Jørn Utzons projekt til Espansiva blev udviklet som et byggesystem med det mål, at kunne skabe mangfoldige planmuligheder og mangfoldige facade- og rumudformninger. Systemets bygningskomponenter er digitaliseret som...... 3D elementer og gjort tilgængelige. Via Internettet er det nu muligt at sammenstille og afprøve en uendelig række bygningstyper som systemet blev tænkt og udviklet til....