Heat Pumps

A ground source heat pump system consists of a loop or loops of polyethylene pipe similar to that used to supply mains water supply is buried in the ground. A water/antifreeze mixture which is chilled to be a lower temperature than the ground temperature is then then pumped around the loop. As the chilled liquid passed through the loop heat energy is gradually absorbed into the liquid from the ground it passes through which is warmer. Whe the liquid has passed completely through the loop it emerges just a few degrees warmer than when it entered the loop.

The heat energy from the "warmed" liquid is then extracted using refridgerator technology using a compresser and an expansion valve. This causes the liquid to be rechilled and ready for another circuit to absorb heat from the ground source loop. Electricty is is required to power the heat extracting process process but on a well installed system appoximately 4 Kw of heat are produced for each Kw of electrical energy consumed.

Ground Source Heat Pumps  Heat Pumps  Air Source Heat Pumps  Geothermal Heat Pumps  Water Source Heat Pumps  Green Links