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How refrigeration unit works
Refrigeration unit working principle, actually its refrigerant gas and liquid phase exchange.

1, Refrigerant flows through the compressor, which raises the pressure.
​2, Refrigerant flows through the condenser, where it condenses from gas phase to liquid phase.
3, Refrigerant goes through the expansion valve, and reduce its pressure.
4, Refrigerant goes to the evaporator. release cooling and vapor to gas phase.
5, Refrigerant back to compressor and restart the cycle.

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