1. A Carnot refrigeration cycle absorbs heat at -12 °C and rejects it at 40 °C. a. Calculate the coefficient of performance of this refrigeration cycle. b. If the cycle is absorbing 15 kW at the -12°C temperature, how much power is required? c. If a Carnot heat pump operates between the same temperatures as the above refrigeration cycle, determine the COP of heat pump? d. What is the rate of heat rejection at the 40°C temperature if the heat pump absorbs 15 kW at the -12°C temperature?