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2009
Conference Paper
Titel
Ventilation in residential buildings: A comparison of different calculation methodologies in the context of the EPBD
Abstract
The legal background for the assessment of the energy performance of buildings and energy certificates in Germany will be changed in October 2009. Beside the tightening of the requirements by about 30%, a significant change will be made at the calculation of residential buildings. Up to now the calculation has to be performed by using the so-called simple approach (EN 15603) by applying the outdated European standard EN 832 in combination with the European Standard EN 14335 with national boundary conditions. From October the calculation can also be performed according to the so-called holistic approach (EN 15603) by applying the DIN V 18599, the German standard application of the EPBD related CEN standards from the EU mandate 343. The DIN V 18599 differentiates the calculation into mechanical ventilation, natural ventilation by opening the windows and ventilation due to infiltration through leakages. That means that the energy effort in residential buildings for ventilation can now be considered in a much more detailed level. In this paper two typical residential buildings are calculated with various configurations of the ventilation system. This might be as well a mechanical ventilation system with heat recovery but also only naturally ventilated buildings. This work will give an overview, whether the energy performance and especially the energy for ventilation are significantly different, when calculated with the two standards.
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In diesem Beitrag werden zwei Wohngebäude mit verschiedenen Anordnungen der Lüftungssysteme berechnet. Hierbei kann es sich zum einen um ein mechanisches Lüftungssystem mit Wärmerückgewinnung handeln oder zum anderen um natürlich belüftet Gebäude. Diese Arbeit wird einen Überblick darüber verschaffen, ob die Gesamtenergieeffizienz und besonders die Energie für Lüftung bedeutend unterschiedlich sind, wenn sie durch zwei verschiedene Methoden errechnet werden.
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