Refrigeration and Air Conditioning
One of the purposes of sub cooling the liquid refrigerant is to

Reduce compressor overheating
Ensure that only liquid and not the vapour enters the expansion (throttling) valve
Increase cooling effect
Reduce compressor discharge temperature

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Refrigeration and Air Conditioning
The reciprocating refrigerant compressors are very suitable for

Large displacements and low condensing pressures
Small displacements and low condensing pressures
Small displacements and high condensing pressures
Large displacements and high condensing pressures

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