. A heat pump is used to maintain a house at 20°C by extracting heat from the outside air on a day when the outside air temperature is 3°C. The house is estimated to lose heat at a rate of 300,000 kJ/h, and the heat pump consumes 7.0 kW of electric power when running. Calculate
(a) the Carnot COP
Assuming that the heat supplied to the house by the HP equals the amount of heat lost by the house and the energy consumed by the HP is as stated above, what is
(b) the actual COP
(c) the heat delivered from the outside air to the heat pump.