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11.1 The compressor
The compressor is a pump, which causes refrige-
rant to flow through the loop by creating a pressure
differential:
high and low pressures are initiated
though the so called discharge and suction ports.
The compressor functions:
g
To suck vapour from the evaporator outlet
and force it into the condenser inlet
g
To increase the pressure of the fluid in
order to increase its temperature and
initiate a phase change in the condenser
g
To force the lubricating oil circulating in the
A/C loop
There are three technologies:
g
Piston compressors
g
Vane compressors
g
Scroll compressors
The components
of the A/C Loop
11
Compressor
39