An inventor claims to have developed a refrigerator that at steady state requires a net power input of 0.7 hp to remove 12,000 btu/h of energy by heat transfer from the freezer compartment at 0 degree f and discharge energy by heat transfer to a kitchen at 70 degree f. evaluate this claim.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.