An investigation of air exchange between rooms and outside air. Untersuchung uber den Luftaustausch zwischen Wohnraumen und Aussenluft.

Natural ventilation of inhabited rooms is studied with regard to its dependence on wind velocity and temperature difference between the interior of buildings and outside air. On the basis of simultaneous aerosol and carbon dioxide measurements an attempt has been made to separate the two components of air exchange: ventilation through walls and ventilation through clefts and chinks.