Refrigeration and Air Conditioning
A refrigerant compressor is used to

Raise the pressure of the refrigerant
Circulate the refrigerant through the refrigerating system
All of these
Raise the temperature of the refrigerant

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Refrigeration and Air Conditioning
Which of the following statement is wrong?

The value of C.O.P. is always greater than one
The space between the saturated liquid line and saturated vapour line, in a pressure enthalpy chart, is wet vapour region
In a vapour compression system, the condition of refrigerant before entering the compressor is dry saturated vapour
None of the listed here

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