A refrigeration machine rejects QH = 800 Btu per cycle to a hot reservoir at TH= 540°R, while receiving Qc = 555.0 Btu per cycle from a cold reservoir at temperature Tc. The machine operates at 10 cycles per minute. Determine the net power input, in hp, the minimum theoretical temperature Tc, in °R, and the maximum coefficient of performance of the cycle.

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.