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10.2.2 The complete loop
The air conditioning loop is made up of:
Five main components:
The compressor, the condenser, the filter
or receiver drier, the expansion valve and
the evaporator.
Two safety devices:
The pressure switch and the evaporator probe.
Two ventilation devices:
The cooling fan, which feeds air to the condenser,
and the blower, which blows air into the cabin.
One element that filters the air entering the cabin:
The cabin air filter.
The figure below shows temperatures, pressures
and fluid state in the A/C loop.
Pressure and temperature values change according
to heat exchanges in the two exchangers and, in
more general terms, also depends on the state of
the system at a given point in time.
Gas - LP
Low T°
Liquid - HP
Medium T°
Gaz - HP
High T°
Evaporator
Expansion
valve
Blower
Receiver drier
Condenser
Compressor
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A/C loop temperature and pressure levels