Stangier R, Zweifel G.
Bibliographic info:
Germany, Stuttgart, Fraunhofer Institut fuer Bauphysik, 1993, proceeding, International Symposium Energy Efficient Buildings, Leinfelden - Echterdingen, Germany, March 9-11, 1993.

As part of a project financed by the National Foundation for Energy Research (NEFF), the Building Services Section at the EMPA examined the thermal behaviour of one building, with zero energy demands, located in a low energy housing estate in Waedenswil on the border of the lake of Zuerich. The estate was initiated by Dr. R. Kriesi who also made the energy concept. The architect was R. Fraefel and the estate was financed also by the government of Zuerich. The measures taken in order to reach a minimal heating demand in the chosen zero energy test house were as following:

  • Overall thermal insulation without any thermal bridges
  • Complete air infiltration tightness of the building envelope
  • Active solar energy use with 33m2 of collector area
  • Seasonal heat storage with a 20 m3 water storage tank
  • Passive solar energy use with 18 m2 of windows facing south
  • Heat recovery from air and waste water
  • Saving with the latest electric energy saving appliances
  • Occasional heating with a wood stove in the living room