Question: A heat engine operating between two reservoirs at 1 0 0 K and 3 0 0 K is used to drive heat pump which extracts

A heat engine operating between two reservoirs at

100

K and

300

K is used to drive heat pump which extracts heat from reservoir at

300

K at the rate twice that at which engine rejects heat to it

.

If the efficiency of the engine is

40 %

of the maximum possible and the coefficient of performance of heat pump is

50 %

of the maximum possible, make calculation for the temperature of the reservoir to which the heat pump rejects heat. Also work out the rate of heat rejection from heat pump if the rate of supply of heat to the engine is

50

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