Comparison of ventilation systems in unoccupied test houses Vergleich von Luftungssystemen in unbewohnten Versuchshausern

A report from the research and development programme Domestic Ventilation is presented. Describes quantitative and qualitative experimental investigations in two flexible test houses of identical size, structure and thermal insulation to compare various ventilation installations and devices under natural weather conditions. The comparative criteria were air infiltration rates and air change, ventilation heat losses, operational behaviour, possible requirement of auxiliary energy, problems and weak points. The chief aim was to develop a basis for judging ventilation installations and devices, particularly as regards their energy economy, under practical conditions and without affecting the occupants.