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Angenehme Raumtemperaturen, eine gute Raumluftqualität und eine ausreichende (Tages-)Lichtversorgung wirken sich über die Aufenthaltsqualität und den Innenraumkomfort maßgeblich auf die Zufriedenheit von Gebäudenutzer*innen – und damit auf ihre Lebensqualität – aus. Da immer mehr Zeit in Innenräumen verbracht wird, ist der Raumkomfort ein entscheidendes Qualitätskriterium von Gebäuden. Daher lohnt ein hoher Planungsaufwand für ein gesundes und angenehmes Raumklima, frische Luft, gute Akustik und überzeugende Lichtverhältnisse.
This paper summarises the state of two research phases within the scope of the IEA Task 40 / Annex 52 "Towards Net Zero Energy Solar Buildings" [1]. The first objective is a cross section analysis of a comprehensive collection of more than 280 international zero energy buildings. The aim is to show trends, motives of actors, as well as their method to reach the zero energy balance. Secondly, an in-depth study shows a rough analysis and characteristics of 50 exemplary Nets ZEBs from different countries and climate regions, as well as their combinations of measures concerning energy efficiency and renewable energy supply.
It is shown that diverse actors with miscellaneous motives have lead to a lot of different building variations. Typical strategies can be assigned to the typology groups "small residential building", "apartment building" and "non residential building". Net ZEBs are much more energy efficient than average buildings which were built according to national construction and energy regulations. None of the leading Net ZEB examples exist without generation of PV electricity. Trends give an outlook of current and possible future combinations of technologies and passive measures for the realization of (future) net zero energy buildings.
Kleehäuser
(2011)