During the operation of the heat pump, the liquid refrigerant leaves the expansion valve and enters the evaporator, and the liquid refrigerant is converted into a gaseous state. This process needs to absorb a large amount of heat, which is obtained by the outside air through the evaporator. The refrigerant that receives heat from the evaporator is compressed by the compressor to a high pressure state, which also raises the temperature. The refrigerant enters the condensing heat exchanger where it is liquefied into a liquid and exchanges heat with water to reach the goal of heating the water.
Air source heat pump is one of the most advanced energy utilization products in the world. It consumes 4 to 6 kWh of electricity per kW of electricity (the COP is generally between 4 and 6). It is a very environmentally friendly and energy-saving heating device.
