Building heating energy requirement reduction - using forced circulation of warm cellar air through wall cavities

摘要

The building is constructed with outside and inside walls which are 15cm. thick and have a cavity of 5cm. to 10cm. between them. Below the building is a cellar, with a duct leading into the cavity and provided with a fan to circulate the air. The temperature in the celler being above that of the outside atmosphere, a buffer or cushion is formed which reduces the heat loss through the walls; circulated air being returned to the cellar for re-use. This may be augmented by passing the circulating air over the heating boiler chimney to pick up waste heat from this source.