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2. In a standard vapor compression refrigeration cycle, operating between an evaporator temperature of -10°C and a condenser temperature of 40°C, the enthalpy of the refrigerant, Freon-12, at the end of compression is 220 kJ/kg. Show the cycle diagram on T-s plane. Calculate i) The C.O.P. of the cycle. (ii) The refrigerating capacity and the compressor power assuming a refrigerant flow rate of 1 kg/min 3. A vapour compression refrigerator uses refrigerant 134a and works in the pressure range of 1.2 MPa and 0.6MPa. At the beginning of the compression, the refrigerant is 0.96 dry and at the end of isentropic compression, it has a temperature of 50°C. The refrigerant liquid leaving the condenser is saturated. If the mass flow of refrigerant is 1.8 kg/min. Determine: (1) Co-efficient of performance. (ii) The rise in temperature of condenser cooling water if the water flow rate is 16 kg/min (111) The ice produced in the evaporator in kg/hour from water at 15°C and ice at 0°C. Cpw=4.187