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The compressor used to air condition your car works in a similar way
to the one in the refrigerator in your kitchen. The job of the
compressor is to move liquid refrigerant around in a pipe. The
compressor pumps, or forces, the liquid from the evaporator into a
condenser and expansion valve, and then back to the evaporator.
There are three common types of compressors:
Two cylinder reciprocating piston type
Four cylinder RADIAL type
Six cylinder AXIAL type
The engine drives the compressor with a belt. In action, the
compressor takes the low pressure refrigerant from the evaporator and
compresses it according to speed and air temperature. The inlet side
is known as the low (pressure) side and the outlet side is known as
the high (pressure) side.
The compressor compresses the refrigerant, and raises its temperature
higher than that of the surrounding air. Then, the compressor forces
the refrigerant into the condenser.
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