The heat absorption and rejection temperatures of a Carnot refrigeration cycle are í8°C and 55°C respectively. The heat rejection rate is 30 kW. There is a temperature difference of 6°C between the...

The heat absorption and rejection temperatures of a Carnot refrigeration cycle are í8°C and 55°C respectively. The heat rejection rate is 30 kW. There is a temperature difference of 6°C between the refrigerant and two heat reservoirs. The internal processes of the cycle are reversible. (a) Calculate the work input, and the COP of the refrigeration cycle. (b) If the cycle is operated as a heat pump, calculate heat absorption rate and the COP.