A heat pump is a low-temperature heating device. It uses the heat energy naturally stored in the ground, air and water. The principle of operation of such a pump is based on the physical transformations that occur in the device, i.e. evaporation, condensation and expansion. Inside the heat pump there is an ecological working medium, which undergoes transformations from liquid to gaseous and vice versa. This results in a flow of heat energy from the lower to the upper source.
In the so-called evaporator, the working medium evaporates, thus absorbing thermal energy from the lower source. Low-pressure steam is then sucked into the compressor, where its temperature rises. Another element of the circuit is the condenser. The compressed refrigerant transfers the heat energy to the upper source, which causes its condensation. On the way to the evaporator, the refrigerant encounters a compressed valve, which in turn rationes the amount of refrigerant entering the evaporator, which lowers its pressure and temperature. Thanks to this, the refrigerant circulates in the thermodynamic circuit and ensures the cyclicality of the pump’s operation.