Air-conditioning
Refrigerant circuit
The Passat has an improved air-conditioning system.
You can find out about its features and innovations on the following pages.
High pressure
Hot air
Restrictor
The compressed refrigerant is expanded and
atomised in the restrictor. It cools down rapidly
in the process.
Evaporator
The evaporator
plates cool the pass-
ing fresh air or the
recirculated air from
the passenger com-
partment. The refrig-
erant absorbs the
heat.
Condenser
The passing outside air
cools the hot gaseous
refrigerant in the con-
denser. The refrigerant is
liquefied in the process.
Compressor
The compressor draws in the gaseous refrigerant
and compresses it. Its pressure and temperature
increase in the process. The hot gas is pumped
onward to the condenser.
Low pressure
Cold air
Heat
The refrigerant in the evaporator absorbs heat
and dissipates it into the ambient air to cool
the passenger compartment.
The refrigerant is circulated in a closed circuit.
The refrigerant circuit contains the
refrigerant R134a.
SSP 192/029
Outside air
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