Outside temperature is 5deg.C. A house requires a heat transfer rate of 12kW to

Question

Outside temperature is 5deg.C. A house requires a heat transfer rate of 12kW to maintain the inside temperature at 20deg.C. A vapor-compression heat pump with ref.22 as the working fluid is to be used to provide the necessary heating. Specify appropriate evaporator and condenser pressures of a cycle for this purpose. Let the refrigerant be saturated vapor at the evaporator exit and saturated liquid at the condenser exit. Calculate:
a.) mass flow rate of the ref.22 in kg/min.
b.) the compressor power in kW.
c.) the coefficient of performance.

Explanation / Answer

The very detailed solution is available online. Try this link:

http://www.learnthermo.com/examples/ch10/p-10d-1.php

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