how do Ground Source Heat Pumps work?

Ground Source Heat Pumps are extremely efficient because they move energy rather than create it. They are seen as a long-term renewable energy investment, as the benefits continue over time, often with added profits. For every 3kW of heat moved into your home it only uses 1kW of electricity.

This means the heat pumps provide an impressive performance efficiency of 300%

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Step by step guide to Ground Source Heat Pumps:

•    The ground-loop pushes fluid around its circuit collecting the heat from the soil.

•    The heat pump’s evaporator then uses the ground source heat obtained by the exchanger to boil the refrigerant. This boils at approximately -10˚C.
Then it turns the refrigerant into vapour, which is then transferred to the Compressor.

•    The Compressor then compresses the vapour and as its volume decreases. At the same time its temperature increases. The gas that is created is fed through to a heat exchanger within the heating pump.

•    Forcing the hot gas through the central heating system’s cold water condenses the refrigerant back into a liquid. As it does this, its heat is passed into the heat exchanger, which supplies your domestic hot water. Then it powers the central heating system using the air source heat extracted at the source.

•    To complete the heat pump’s closed circuit, the pressure of the condensed liquid is reduced via the expansion valve. The end result is just as planned - your heating requirements are fulfilled!