With reference to refrigeration systems: (a) Explain why undercooling of the refrigerant at the condenser outlet is desirable; (3) (b) Describe, with the aid of a sketch, how a heat exchanger could be incorporated in the circuit to enhance undercooling (5) (c) Explain the possible consequences of the refrigerant having a dryness fraction at the compressor suction. (2)
Reefer & A/C
UKM Tuticorin 
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