Refrigeration and Air Conditioning
The refrigerant supplied to a compressor must be

Superheated vapour refrigerant
None of these
A mixture of liquid and vapour refrigerant
Dry saturated liquid refrigerant

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Refrigeration and Air Conditioning
For proper refrigeration in a cabinet, if the temperature and vapour pressure difference between cabinet and atmosphere is high, then

Refrigerant with lower evaporation temperature should be used
Bigger cabinet should be used
Perfectly tight vapour seal should be used
Smaller cabinet should be used

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Refrigeration and Air Conditioning
In a bootstrap air evaporative cooling system, the evaporator is provided

Between the first heat exchanger and the secondary compressor
Between the second heat exchanger and the cooling turbine
Between the combustion chamber and the first heat exchanger
Between the secondary compressor and the second heat exchanger

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