Working of heat pump.

Question

Accepted Answer

Heat pump is a device that transfers heat from a lower temperature to a higher temperature.

Heat pump works on the principle of refrigeration cycle.
It consists of four main components: evaporator, compressor, condenser, and expansion valve.
The refrigerant absorbs heat from the low-temperature source (air, water, or ground) in the evaporator and gets converted into a gas.
The compressor then compresses the gas, which increases its temperature and pressure.
The high-temperature gas then flows through the condenser, where it releases heat to the high-temperature sink (air or water).
The refrigerant then gets cooled and converted back into a liquid state in the expansion valve.
The cycle then repeats.
Heat pumps are used for space heating, water heating, and air conditioning.
Examples of heat pumps include air-source heat pumps, ground-source heat pumps, and water-source heat pumps.

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