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Thu, 2014-01-02 17:20 — Kathy Gilbeaux
Watch how geothermal heat pumps heat and cool buildings by concentrating the naturally existing heat contained within the earth -- a clean, reliable, and renewable source of energy.
energy.gov - June 24, 2012
Geothermal heat pumps (GHPs), sometimes referred to as GeoExchange, earth-coupled, ground-source, or water-source heat pumps, have been in use since the late 1940s. They use the constant temperature of the earth as the exchange medium instead of the outside air temperature. This allows the system to reach fairly high efficiencies (300% to 600%) on the coldest winter nights, compared to 175% to 250% for air-source heat pumps on cool days.
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Re: Geothermal Heat Pump
CLICK HERE - WIKIPEDIA - Geothermal Heat Pump
This article is about using heat pumps to heat and cool buildings using the earth as a heat reservoir.