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Enlist the four effects of subcooling on the performance of V.C.C. refrigeration cycle.

Question: 

Enlist the four effects of subcooling on the performance of V.C.C. refrigeration cycle.

Answer: 

The process of cooling refrigerant below condensing temperature for a given pressure is known as sub cooling. -Due to sub cooling the refrigerating effect increases or for same refrigerating effect the circulation rate refrigerant decreases and therefore COP of system increases. Thus sub cooling is desirable & is done to increase refrigerating effect & COP of system