Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Compressor and condenser
Compressor and evaporator
Expansion valve and evaporator
Condenser and expansion valve

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

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

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