Thermal Efficiency of a Power Cycle

A cycle diagram for a heat engine or power cycle.  The system gets heat from the hot reservoir, produces a net amount of work and rejects some heat to the cold reservoir.

Thermal Efficiency

: η
a measure of the performance of a

power cycle

First Law :
For power cycles:
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Ch 4, Lesson F, Page 6 - Thermal Efficiency of a Power Cycle