Experimental investigations concerning energy savings achieved in buildings with passive solar components (e.g. large south-front windows, sunspaces or Trombe walls) have already been effected under test conditions. Since, however, the influence was found to be a very strong one, the main purpose of the present project was to analyze inhabitants' acceptance and use of various components like shading devices, moveable heat insulation, manual ventilation, room temperatures, and heating systems. The study is based on extensive measurements performed on 25 occupied single-family houses in Germany. Results concerning the influence of occupants' behaviour will be given.
