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Dongguan Zhengxu new energy equipment Technology Co., Ltd
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    The refrigeration principle and heating principle of air energy heat pump are illustrated

    Author: Lucy source: Zhengxu air energy, published on July 5, 2019, click: 11167

    With the development of coal to electricity project, air energy heat pump has become a hot topic in the national government's promotion of coal to electricity project, but the principle of heat pump is rarely known. Air energy heat pump can not only produce heat for domestic hot water, household heating and drying materials, but also can be used for cooling in summer. How does the principle of air energy heat pump achieve refrigeration and heating?



    Before explaining the principle of heat pump, it is necessary to understand that an air energy heat pump unit is composed of compressor, water pump, liquid storage tank, filter, heat exchanger, axial fan, heat preservation water tank, electronic expansion valve and electronic controller. It can be seen that the high complexity of the heat pump unit and the high failure rate of the air compressor unit can not guarantee the high reliability and low air reserve.


     The working principle of air energy heating

    (schematic diagram of heat pump refrigeration)



    Principle of heat pump refrigeration

    The refrigeration principle of heat pump is connected with that of air conditioning. The refrigerant steam with high heat generated by the compressor enters the condenser through the four-way valve to release heat and condense into liquid. Then the refrigerant is absorbed in the evaporator to cool the indoor air. The evaporated refrigerant vapor is sucked in by the compressor through the reversing valve to realize the refrigeration cycle.


     Diagram of working principle of air heating system

     

    (schematic diagram of heat pump heating)


    So, different from the simple refrigeration of air conditioning, how to realize the heating function of heat pump?


    Heating principle of heat pump

    The key of heat pump to realize heating function is to install electromagnetic four-way valve. Through the switching direction of four-way valve, the flow direction of refrigerant can be changed, so that heating, hot water and other functions can be realized.


    Heat pump has a wide application prospect. The domestic hot water of heat pump covers every concentrated point of people flow. Whether it is university, high school dormitory or large and small-scale factories, gymnasiums and office buildings need hot water. However, the regional coverage of heating application covers most of China. Naturally, heating in the North is needless to say. There are also cascade high-temperature heat pump chillers and heating units in the severe cold areas of Northeast China Villa also gradually use air for heating and cooling.
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  • Address: No.5, West 1st Street, Xingfa South Road, No.6 Industrial Zone, wushaliwu, Chang'an Town, Dongguan City, China unified customer service hotline: 180-3832-0968
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