Energy saving methods of ventilation in domestic buildings. Energiesparende Luftungsmabnahmen in Wohngebauden.

Improved insulation of domestic buildings has resulted in ventilation heat loss forming a large part of the total heat loss. Estimates show that energy consumption in the Federal Republic of Germany could be reduced by ventilating design methods eg by economical ventilating systems suitably adapted to theheating installations. A number of technical facilities exist for the utilisation of this potential, which at the same time maintain the necessary requirements for indoor climate. Main points covered are the reduction of the air change rate to a permissible level and heat recovery from discharged air.