Muhlebach H.
Bibliographic info:
Heizung und Luftung/Chauffage et ventilation, No 5, 1984

Defines air change and air penetration. Describes the differential pressure method, the infrasound method, qualitative judgement methods, and acoustic measurement devices for determining air penetration. Explains procedures todetermine air change - the rate of decay method, the constant concentration method, and the constant emission method.