Aheat pump is used to maintain a house at 25c by extracting heat from the outside air on a day when the outside air temperature is 4c. the house is estimated to lose heat at a rate of 110,000 kj/h, and the heat pump consumes 4.75 kw of electric power when running. is this heat pump powerful enough to do the job?

Estimate the change in specific internal energy au and specific enthalpy h from inlet to outlet for ethylene glycol (a liquid) flowing through each of the following devices: (a) a heat exchanger where the glycol temperature increases from 20 °c to 80 °c; (b) a pump operating at about 25 °c and increasing the glycol pressure from 100 kpa to 8 mpa.