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9.8 Cooling and
dehumidifying the air
The cold is produced by the evaporator, which acts
as a heat exchanger to cool down the outdoor air
entering the cabin.
The outdoor air cools down as it passes through the
fins on the evaporator and transfers its heat to the
refrigerant. The cool air is then blown into the cabin
at temperatures of between 2°C and 10°C.
Air conditioning is often thought of as a means of
cooling down the air, but one of its most important
roles is to dehumidify the air.
In cold weather, it is important to reduce the humidi-
ty levels in the cabin. Several occupants will quickly
produce mist on the vehicle’s windows.
Evacuation of condensates
Air moisture can be extracted effectively by a
process of condensation on the evaporator fins.
The condensates (water) are then collected and
evacuated beneath the car.
The evaporator
is located inside the HVAC
after the blower
29
Condensates
are evacuated
beneath the car