CME2028 Tutorial: week 5 1. An ideal vapour-compression refrigeration cycle, with ammonia as the working fluid, has an evaporator temperature of 20C and a condenser pressure of 12 bar. Saturated vapour enters the compressor and saturated liquid exits the condenser. The mass flow rate of the refrigerant is 3 kg/min. (a) Draw the process diagram. (b) Draw the T-S diagram. (c) Determine the coefficient of performance. (d) Determine the refrigeration capacity. Give your answer in tons. CME2028 Tutorial: week 5 1. An ideal vapour-compression refrigeration cycle, with ammonia as the working fluid, has an evaporator temperature of 20C and a condenser pressure of 12 bar. Saturated vapour enters the compressor and saturated liquid exits the condenser. The mass flow rate of the refrigerant is 3 kg/min. (a) Draw the process diagram. (b) Draw the T-S diagram. (c) Determine the coefficient of performance. (d) Determine the refrigeration capacity. Give your answer in tons