More than two months of detailed test data have been gathered using modified constant concentration tracer gas techniques for a six-storey, 60 apartment, multi-family building. Weather, and interior conditions in the building were part of the data set. Because of occupant effects, large changes in air exchange rates were observed, often over short time period. The test apartment allowed us to evaluate the influences of weather alone with the added feature to employ controlled window openings.
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.
Air quality and draught avoidance are fairly important to office staff; consequently, the occupant's perspective should be taken into account when assessing the relative merits of different methods of ventilation in office buildings. Environmental comfort ratings and a variety of other judgements were collected in interviews with 169 staff in two air-conditioned and three naturally ventilated office buildings.
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