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b. Evaporator Section. The evaporator section
H eat from this air causes the liquid refrigerant to
(fig. 1-1 & 1-3) contains intake and discharge
boil in the coil. The flow of liquid refrigerant is
grilles, the evaporator coil, fan motor and fan,
controlled by the throttling action of the expansion
expansion valve, air filter, air supply and discharge
valve which is activated by thermal (heating)
louver
control,
and
electrical
controls.
The
elements. When the refrigerant boils it is in a super-
evaporator fan draws air over the evaporator coil.
heated state and extracts heat and gives off cool air.
1-4
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