HEAT PUMP

device that extracts heat from one substance and transfers it to another substance

A heat pump is a machine or device that moves heat from one location (the 'source') to another location (the 'sink'), using work. Most heat pump technology moves heat from a low temperature heat source to a higher temperature heat sink. Common examples are:Food refrigerators and freezersAir conditioners and reversible-cycle heat pumps for providing thermal comfortWater chillersStirling cryocooler
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Noun
1. apparatus that extracts heat from a liquid that is at a higher temperature than its surroundings; can be used to transfer heat from a reservoir outside in order to heat a building
(hypernym) apparatus, setup

An electric device with both heating and cooling capabilities. It extracts heat from one medium at a lower (the heat source) temperature and transfers it to another at a higher temperature (the heat sink), thereby cooling the first and warming the second. (See: Geothermal/Ground Source Heat Pump, water source heat pump.)

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