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Glossary

Terms for Architecture, Green Building & Energy


This glossary includes more than 300 solar terms, as well as hundreds of additional sustainable design and construction terms.

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Transpired Solar Air Heater

Definition: Transpired solar air heaters can be roof or wall mounted. The units are used to collect and distribute solar energy into a building for heating purposes. The units consist of a multilayer construction, with a perforated sheet on the outer surface, a small void then a standard roof or wall system. The air within the void is heated and then distributed either naturally or with the assistance of a fan to the occupied space. These systems can be engineered to work in reverse and provide passive cooling and natural ventilation during warm periods.