Thread: DIY heat pump??
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Old 10-10-2008, 09:22 PM   #22 (permalink)
NiHaoMike
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There's a heat pump out there that has a wire running through the outdoor coils but electrically insulated from the actual coil. The wire connects to a circuit that generates high voltage, very high frequency AC (about 800v at 915MHz). When power is applied, the frost in the gap acts as a very lossy dielectric, heating up very fast and vaporizing almost instantly. The resulting shock wave blows the rest of the frost out of the coils.
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