A R 12 vapour compression refrigeration system is operating

Last updated: 6/9/2023

A R 12 vapour compression refrigeration system is operating at a condenser pressure of 9 6 bar and an evaporator pressure of 2 19 bar Its refrigeration capacity is 15 tonnes The values of enthalpy at the inlet and outlet of the evaporator are 64 6 and 195 7 kJ kg The specific volume at inlet to the reciprocating compressor is 0 082 m kg The index of compression for the compressor is 1 13 Determine a The power input in kW required for the compressor b The COP Take 1 tonnes of refrigeration as equivalent to heat removal at the rate of 3 517 kW Ans a 11 57 kW b 4 56 T 10 C T 40 C