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An attic fan installed underneath a roof. A powered attic ventilator, or attic fan, is a ventilation fan that regulates the heat level of a building's attic by exhausting hot air. A thermostat is used to automatically turn the fan off and on, while sometimes a manual switch is used. An attic fan can be gable mounted or roof mounted. Additional ...
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Pages in category "Ventilation fans" The following 44 pages are in this category, out of 44 total. ... Attic fan; Axial fan design; C. Casablanca Fan Company; Ceiling ...
The solar chimney can be improved by integrating it with a trombe wall. The added advantage of this design is that the system may be reversed during the cold season, providing solar heating instead. A variation of the solar chimney concept is the solar attic. In a hot sunny climate the attic space is often blazingly hot in the summer.
Passive solar building design sometimes uses limited electrical and mechanical controls to operate dampers, insulating shutters, shades, awnings, or reflectors. Some systems enlist small fans or solar-heated chimneys to improve convective air-flow. A reasonable way to analyse these systems is by measuring their coefficient of performance. A ...
The Maryland Energy Administration offers a $1000 grant for residential PV systems between 2 and 20 kW of DC power at STC and $500 for solar hot water (solar thermal). [ 6 ] [ 7 ] Commercial installations are granted $60/kW (max. 100 kW) for solar panels and $20/square foot (max. 250 square feet) for solar thermal systems.
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