mananc the maximum COP for this heat pump if the outdoor air at (a) 10°C, (b) -5°C, and (c) -30°C? A heat pump is to be used for heating a house in win- ter. The house is to be maintained at 26°C at all times. When the 6-101 temperature outdoors drops to -4°C, the heat losses from the house are estimated to be 55,000 kJ/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. is to be used to heat a house