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HVAC
25
CONDENSER
The condenser is a heat exchanger used to cool the
hot vapourised refrigerant. Also the refrigerant
changes its state from vapour to liquid. The
condenser is placed in front of the radiator behind
the radiator is the fan used to draw in ambient air.
CONDENSER SEALING DUCTS
Sealings are used to guide the flow of the air to the
condenser and also to avoid the hot air recirculating
from the engine compartment to the condenser.
RECEIVER DRIER (R.D)
The receiver drier is integrated into the Condenser
and has three main functions.
i) It absorbs the moisture in the refrigerant.
ii) It allows only liquid (
high pressure liquid)
to pass
through to the TXV.
iii) It keeps a reserve of refrigerant to accommodate
fluctuating refrigerant requirements.
10.1.5.5. THERMISTOR OR THERMO SENSOR
It is a temperature-sensing device, which is
positioned at the coldest point of the evaporator
(as
shown in the fig below)
. The control unit switches
OFF the compressor at a temperature when
condensed water tends to form ice on the fins of
evaporator. Thus it maintains the evaporator
temperature within a specified range.
LOCATION
It is mounted on Air intake / Evaporator housing
assembly
PIN OUT