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A refrigeration machine using R-12 as refrigerant operates between pressures 2.5 bar and 9 bar. The vapour entering the compressor is dry saturated and there is no subcooling in the condenser. If the

condenser. If the capacity of the plant is 20 TR and the relative COP is 65 %.

Determine:

  1. Actual COP 2. Actual power input to the compressor.

Properties of the refrigerant are given below enter image description here

Take sp. heat of refrigerant vapour as 0.67 KJ/Kg-K

Mumbai University > Mechanical Engineering > Sem 8 > Refrigeration and air conditioning

Marks: 10M

Year: May 2016

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