Explain the thermodynamic principle of a geothermal heat pump.

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Expert Solution

A geothermal heat pump or ground source heat pump (GSHP) is a central heating and/or cooling system that transfers heat to or from ground. Geothermal heat pumps basically have the same working principle like air conditioners or refrigerators, by using the transfer of heat. Geothermal heat pumps can transfer heat from a cool space to a warm space, against the natural direction of flow, or they can enhance the natural flow of heat from a warm area to a cooler space, which depends whether they are used for heating (during the winter) or for the cooling purposes (during the summer). A ground source heat pump absorbs heat from the ground – by circulating water though piping in the ground – and transfers the heat into the building by circulating hot water though radiators, or underfloor piping circuits. In a heat pump, the refrigerant is evaporated by the ground heat, the resulting
gas is compressed and thus heated, and then the hot gas supplies its heat to the
heating system. The measure for this efficiency is the COP for an electric compression heat pump defines as COP = (useful heat)/(electric power input)

genius_generous answered 1 year ago

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