Section Three
Trouble Shooting for Cooling Failure
Chapter I Refrigerant Principle
Portable air-conditioning refrigerant system was mainly composed of four parts:
compressor, condenser, capillary and evaporator, which are connected by tubes as
following:
When portable air conditioner starts to work, firstly compressor compresses normal-
temperature and low-pressure refrigerant gas to a high-temperature and high-pressure
gas, then send it to condenser. In condenser, the high-temperature and high-pressure
refrigerant gas will be cooled down to a mesothermal (45℃-50℃) and high-pressure
refrigerant liquid by fan, after that the refrigerant passes capillary where it will be
decompressed and throttled, and then goes to evaporator where the refrigerant will
expand rapidly and absorb heat from environment, at last fans blow out cooling air to
cool the room.
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