Several European standards are in development to support the EPBD with calculation methodologies. A basic requirement is development of methods for calculation of energy performance of buildings. Introduction The European Union directive on the energy performance of buildings (EC, 2003), the EPBD, requires measures to achieve rational use of energy and to reduce the environmental impact of energy use in buildings. Comparison is also provided with he detailed thermal simulation tool BSim.ฤก. Validation of the proposed model and calculation procedure is provided against coming European standard (EPBD WI 17) for validation of calculation procedures in accordance with the EPBD. The systems are controlled based on an operative temperature calculated from the room air temperature and the mean internal surface temperature. Several systems are available to control the thermal indoor environment including heating, cooling, solar shading, venting and shutters. Calculation of hourly temperatures, heating loads and cooling loads is based on a RC-network model of a thermal zone including heat capacities of internal surfaces and the room air. Calculation procedures and input data are developed in accordance with European standards in the area of thermal performance of buildings. The method is useful in the early design phase to investigate energy performance and requires a minimum of input data. This paper presents a simplified method to calculate hourly temperatures, heating demands and cooling demands. SUMMARY: The European Union directive on the energy performance of buildings (the EPBD) requires measures to achieve rational use of energy and to reduce the environmental impact of energy use in buildings.
Lyngby, Denmark KEYWORDS: energy performance heating cooling temperature simulation energy performance of buildings directive. Lyngby, Denmark Svend Svendsen, Professor, Technical University of Denmark, Department of Civil Engineering, Building 118, DK-2800 Kgs. Simplified hourly calculation of energy performance in accordance with the Energy Performance of Buildings Directive Toke Rammer Nielsen, Assistant professor, Technical University of Denmark, Department of Civil Engineering, Building 118, DK-2800 Kgs.