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TRG-TRC005-EN 43
notes
We will now review the main concepts that were covered in this clinic about the
components in a vapor-compression refrigeration system.
Period One reviewed the vapor-compression refrigeration cycle using the P-h
chart.
A cool, low-pressure mixture of liquid and vapor refrigerant enters the
evaporator (A) and absorbs heat from the relatively warm air or water that is
being cooled. This transfer of heat boils the liquid refrigerant in the evaporator
and superheated refrigerant vapor (B) is drawn to the compressor.
The compressor raises the pressure and temperature (C) high enough that the
refrigerant vapor can reject heat to another fluid. This hot, high-pressure
refrigerant vapor then travels to the condenser where heat is transferred to
relatively cool ambient air or cooling water. This reduction in the heat content
period six
Review
Refrigeration
System Components
Figure 61
Review—Period One
expansion
expansion
device
device
A
D
condenser
condenser
pressure
pressure
enthalpy
enthalpy
evaporator
evaporator
B
C
compressor
compressor
Figure 62
period six
Review