The CA conducted a study on experiences and challenges for setting cost optimal levels for energy performance requirements. The results were used as input by the EU Commission in their work of establishing the Regulation on a comparative methodology framework for calculating cost optimal levels of minimum energy performance requirements.
Post date: 23 Aug 2011
Das kostenfreie Toolkit unterstützt Eigentümer und Planer von öffentlichen Gebäuden bei folgenden Aufgaben:
Post date: 2 Jul 2011
Wärmebrücken können an unterschiedlichen Stellen der Gebäudehülle auftreten und dort erhöhte Wärmeströme, niedrigere Innentemperaturen, Feuchte und Schimmel probleme sowie größere Transmissionswärmeverluste verursachen. Die Transmissionswärmeverluste führen zu höheren Heiz- und Kühlenergiebedarfswerten und werden u.a. besonders wichtig bei sogenannten Hocheffizienz- oder Niedrigstenergiegebäuden. Das EU Projekt ASIEPI hat nationale Informationen zu Wärmebrücken aus bis zu 17 EU-Mitgliedsstaaten plus Norwegen gesammelt und analysiert.
Post date: 15 Dez 2010
For many of these items it can be said that various at least partly high quality material is available in most of the EU Member States (like software tools for calculating thermal bridges, thermal bridges atlases and promotion of good practice guidance). It would be desirable that the material is used more often by building practitioners and that some countries catch up with the others. Software for calculating thermal bridges should be validated and the validation documentation should be published.
Post date: 6 Mai 2010
International building legislation is setting stronger and stronger requirements for the energy performance of buildings. An actual example is the impact of the Energy Performance of Buildings Directive in the European Union (EPBD) on the national requirements in the Member States. The improved energy performance of buildings can’t be achieved by additional insulation or more effective buildings systems only. A major influence factor on the energy quality is the ventilation technology and also the airtightness of the building envelope.
Post date: 29 Mär 2010
Thermal bridges increase the building energy demand for heating and cooling. For well insulated
envelopes and buildings with increased energy efficiency, the influence of thermal bridging on the
Post date: 25 Feb 2010
The German Ministry for Transport, Building and Urban Affairs contracted Fraunhofer-IBP in cooperation with the Federal Office for Building and Regional Planning and the company Megawatt to issue an energy certificate based on calculations with the standard DIN V 18599. The complex energy supply concept includes combined heat and power units based on biofuel, seasonal heat and cold storages and connects via local district heating and cooling networks several parliamentary buildings. The building was retrofitted between 1991 and 1999 according to the architectural plans of Sir Norman...
Post date: 16 Dez 2009
Earlier intercomparison studies have shown that already the calculation of floor areas, envelope areas etc. lead to different results when national calculation standards of several European Member States have to be followed. In most cases one or several representative buildings for the country that launched the study have been used for the comparison. As many influence factors are related to the floor area, other areas or volumes (e.g. default values for internal gains or the ventilation losses), this can produce the first differences regarding the energy performance results.
Post date: 12 Sep 2009
The implementation of the Energy Performance of Buildings Directive (EPBD) has caused in most of the EU Member States more severe requirements for the energy demand of buildings. In order to meet these requirements, not only buildings components with better U-values and more efficient building systems have to be used, also the ventilation losses have to be reduced. A contribution to this necessary reduction is the improvement of the building envelope airtightness, mainly the airtightness of building components and joints.
Post date: 30 Aug 2009
Post date: 19 Jun 2009