Aheat pump provides 65,000 btu/h of heat to a dwelling at 70 °f when the outside temperature and the evaporator temperature is 0 °f the device operates on a dry compression cycle and uses r-12 as the working fluid. assuming that the condenser outlet temperature is 10 °f above the room temperature and the evaporator temperature is 10 °f below the outside temperature. determine (a) the flowrate of the refrigerant, (b) the cop, and (c) the power required for the compressor. where mdot= 0.287 lbm/s, cop=4.9 and pc=3872w