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Expansion valve
The refrigerant which enters the expansion valve is in
liquid form with high pressure and temperature. The
task of the expansion valve is to adjust the amount of
refrigerant which is sprayed into the evaporator. The
valve does not allow in more refrigerant than can be
evaporated at any one time.
W710D006
Evaporator
After the expansion valve, the refrigerant enters the
evaporator where it expands. The pressure in the
evaporator is considerably lower due to the suction
action in the compressor. When the refrigerant
expands, it becomes a gas (evaporator). Heat must be
added to make this happen. The heat is taken from the
air around the evaporator. The cooled air is then sent to
the interior of the car. The refrigerant then goes to the
compressor in the form of a gas.
W710D007
T echnical description
15
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