3.1 A 15 TR Freon 22 vapour compression system operates between a condenser temperature of 40°C and an evaporator temperature of 5°C. (a) Determine the compressor discharge temperature: (i) Using the p-h diagram for Freon 22. (ii) Using saturation properties of Freon 22 and assuming the specific heat of its vapour as 0.8 kJ/kg. K. (iii) Using superheat tables for Freon 22. (b) Calculate the theoretical piston displacement and power consumption of the compressor per ton of refrigeration.