Plot the power produced and heat rejection rate to a cool reservoir for a cyclic heat engine that receives 100 kW of heat from a warm reservoir, for thermal efficiencies ranging from 0.05 to 0.70.

Given: Q?H = 100 kW
What will be an ideal response?


For a cycle: Wcycle = Qcycle

There are two heat transfers and one power, so Q?cycle=Q?H+Q?C=W?

From the thermal efficiency, W?=nQ?H

Then, Q?C=W??Q?H

For the given efficiency range:



Note, the absolute value of the heat rejection rate to the cool reservoir decreases as the thermal efficiency increases.

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