[4 marks] 10. CARNOT HEAT PUMP A heat pump is to be used for heating a house in winter. The house is to be maintained at 26°C at all times. When the temperature outdoors drops to -4°C, the heat losses from the house are estimated to be 55,000 kl/h. Determine the minimum power required to run this heat pump if heat is extracted from (a) the outdoor air at -4°C and (b) the well water at 10°C.