Chapter Ⅰ Product Introduction（2. Basic Working Principal）
2
2. Basic Working Principal
2.1 Introduction of Working Principal
Backwater pipe
Condenser
Evaporator
Fan
Air source energy input
Electric energy input
Electronic
expansion
valve
Strainer
Compressor
Water supply pipe
Water
tank
Inlet pipe of cold water
Bushing condenser
Exit pipe of hot water
Gas-liquid separator
The water heater starts to work after being energized, and then enters into heating. After the
low-temperature and low-pressure refrigerant gas is absorbed by compressor, it will be
compressed to be high-temperature and high-pressure gas, and then it enters into heat
exchanger of water side to conduct heat exchange with water, through which the refrigerant
becomes liquid, and then the liquid refrigerant enters into the heat exchanger of air side via
depressurization and cooling of electronic expanding valve, it will conduct heat exchange with the
ambient air inside the heat exchanger of air side; after being evaporated to be low-temperature
and low-pressure refrigerant gas, it will return to the compressor and enter into the next cycle. At
the same time, the water inside the heat exchanger of water side which for conducting heat
exchange with refrigerant is heated and will flow to thermal insulating water tank by the driving of
water pump.
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