( )regulates the refrigerant flows from the high pressure side of the system to the lowpressure side.
A. Condenser
B. The expansion valve
C. Evaporator
D. Compressor
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The saturation temperature changes with( )
A. the air density
B. the pressure
C. the present atmospheric pressure
D. surrounding temperature
The most infamous greenhouse gas is( )
A. CO2.
B. R134
C. NH.
D. R22
( )is the process of removing heat, and the practical application is to produce or maintaintemperatures below the ambient.
A. Refrigeration
B. Ventilation
Circulation
D. Evaporation
An important consideration in selecting a lubricating oil for use in a refrigeration compressorfor the oil to( )
A. have a high viscosity index
B. mix readily with refrigerant
C. have a high freezing point
D. have a low pour point