Geothermal heat pump is a type of heat pump by which the ground, ground water, or ponds are used as a heat source and heat sink, rather than outside air. The temperatures of ground or water are more constant and as compared to air temperatures they are warmer in winter and cooler in summer. As compared to conventional or air-source heat pumps, geothermal heat pumps operate more efficiently.
Efficiency of Geothermal Heat Pumps
Geothermal heat pumps are sometimes called as GeoExchange, earth-coupled, ground-source, or water-source heat pumps. They have been in use since the late 1940s. As the exchange medium Geothermal heat pumps (GHPs) uses the constant temperature of the earth instead of the outside air temperature.
