The Working Principle of Air Source Heat Pump Water Heater

Air source heat pump water heater is a new generation of hot water equipment following gas water heaters, electric water heaters and solar water heaters. It is the heating water equipment that can replace boilers. Air source heat pump water heater is a safe, energy-saving and environment-friendly water heater with the advantages of integrated electric water heater and solar water heater. It can run around the clock 365 days a year. Its cost of producing the same amount of hot water is only one quarter of the electric water heater, one third of the gas water heater, and one half of the solar water heater. High thermal efficiency is the biggest feature and advantage of air source heat pump water heaters. When the energy problem becomes a world problem, this is one of the most important magic weapons for air source heat pump water heaters to become the “fourth generation water heater”.

The working principle of air source heat pump water heater
A heat-absorbing medium, a refrigerant, is placed in the air source heat pump water heater. The refrigerant is lower than minus 20 ° C in the liquefied state, and there is a temperature difference from the outside temperature. Therefore, the refrigerant can absorb the external heat energy, evaporate and vaporize inside the evaporator, increase the temperature of the refrigerant through the operation of the compressor in the air source heat pump water heater, and then convert the refrigerant from the vaporization state to the liquefaction state through the condenser. During the conversion process, the refrigerant releases a large amount of heat and is transferred to the reserve water in the water tank to raise the temperature of the water to achieve the purpose of making hot water.

System composition
Air source heat pump central hot water unit generally consists of compressor, condenser, evaporator, throttling device, filter, liquid storage tank, check valve, solenoid valve, condensing pressure regulating water valve, water storage tank and other parts.

The working principle of air source heat pump water heater
1. After the low temperature and low pressure refrigerant is throttled and depressurized by the expansion mechanism, it enters the air switch to absorb heat and absorb a large amount of heat Q1 from the air.

2.Evaporation of the endothermic refrigerant enters the compressor in gaseous form. After being compressed, it becomes a high temperature and high pressure refrigerant. At this time, the heat contained in the refrigerant is divided into two parts. One part is the heat Q1 absorbed from the air, and the other part is the heat Q2 that is converted into electric energy in the compressor when the refrigerant is compressed.

3.The compressed high temperature and high pressure refrigerant enters the heat exchanger and releases the heat (Q1+Q2) to the cold water in the heat exchanger.. The cold water is heated to 55 ° C (up to 65 ° C) directly into the insulated water tank for storage.

4. The exothermic refrigerant enters the expansion mechanism in liquid form and is throttled and depressurized. So loop through without interruption.

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