Abstract
A study commissioned by Florida Power and Light Co. of Juno Beach reports that energy savings in Florida from ceiling fans came only with the raising of air conditioner thermostats. Making fans with high-efficiency motors offered one way of achieving that goal and aerodynamic blades offer another. Infrared thermogram of a typical ceiling fan shows heat generated by the motor. Temperature scale at bottom reads from coolest to hottest. With simulations having helped the decision on the choice of design, the engineer team set out to discover a building method for making the prototype blades. As work proceeded on the blades, Florida Solar Energy Center, in Cocoa, also considered what sort of control system would eventually operate a production version. Even after undergoing many redesigns from the original wooden-blade prototype development team tested back in 1997, the two production models offer substantial improvements in energy efficiency.
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