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Working Principle
Refrigerant with low temperature and low pressure is compressed by the
compressor to high temperature and high pressure vapour, then cools in the
condenser (This is a forced air cooling process: room air passes condenser surface,
absorbs the refrigerant's heat in the condenser by heat exchange, then the room air
warms up and the warm air is exhausted through the air exhaust duct,) to become
high pressure liquid. The liquid flows through capillary tube to lower its pressure to
become low temperature low pressure liquid. After absorbing the heat of air in the
surface of evaporator (A forced air cooling process too: room air passes evaporator
surface, its heat is absorbed by refrigerant in tube, it cools down and flows into room
to lower the room temperature). The low temperature low pressure liquid is
evaporated in the evaporator. The refrigerant becomes vapour and flows back to
compressor. Then the refrigerant vapour is compressed in compressor again. Thus
the room temperature is lowered by circulating this operation.
fan motor
hot air
air flow2(air inflow from back)
condenser
compressor
upper fan
cool air
(heating)
lower fan
motor
lower fan
capillary
tube
air flow1
evaporator
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