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Q5. A vapour compression refrigeration system using R134a operates between the pressures of 2.006 bar and 4.8833 bar.

It enters the compressor with 10 K of superheating and compressed through a compressor with an isentropic efficiency of 82%.

No undercooling takes place in the condenser.

(a) Draw the cycle on Pressure-specific enthalpy and Temperature-specific entropy diagrams. (2)

(b) Calculate EACH of the following;

(i) the temperature leaving the compressor; (11)

(ii) the coefficient of performance. (3)