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HVAC
15
AIR FLOW
The air is drawn in through the inlet duct due to the
suction created by the blower. The blower forces
either the ambient air or the cabin air depending on
the mode selected
(Fresh Air mode or Recirculation
mode)
to flow over the evaporator which lowers the
temperature of the ambient air. The incoming air also
gets dehumidified as the moisture condenses when
the air flows over the cold evaporator fins. This cold
de-humified air is then mixed with the hot air (
if re-
quired)
to attain the temperature selected by the
occupant; the mixing control is done by the heater
door opening