The evaporator changes the low-pressure liquid refrigerant from the expansion valve into

Question

RRB Paper · Accepted Answer

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High-pressure liquid refrigerant

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The evaporator changes the low-pressure liquid refrigerant from the expansion valve into Low-pressure vapour refrigerant.

Detailed Explanation

The evaporator is a heat exchanger where the actual cooling effect is produced.
The evaporator receives the low-pressure refrigerant from the expansion valve and brings the material to be cooled in contact with the surface of the evaporator.
The refrigerant absorbs the heat from the materials to be cooled.
The refrigerant takes up its latent heat from the load and becomes vapor.
The refrigerant vapor produced in the evaporator is pumped by the compressor and low pressure is maintained to maintain low evaporating temperature.