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| Ceiling
fans are located in the Desert House to move air throughout the house's interior. Air
movement increases the effectiveness of the body's own evaporative cooling system. A
slight breeze in conjunction with perspiring can have the cooling effect of a ten-degree
drop in temperature. Most ceiling fans are capable of moving either counterclockwise, blowing air downward
or clockwise, pulling air upward. If the fan is used to create a cooling breeze inside the
house it is best to have the air blow downward. If the fan is used in conjunction with a
heat pump or other heating and cooling device, it is more effective to have the warm air
pulled upward towards the ceiling. This shortens the time required to circulate air
through the building interior and can increase heating and cooling efficiency. Fans in general are economical ways to make buildings more comfortable. Costs range from as low as $15 to over $1,000 depending on the kind desired. Normal operating cost for a 150 watt fan running 8 hours at .075 cents per kilowatt house (kwh) is about 9 cents. |
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