Thermal Efficiency & BWR of the A-S Brayton Cycle

Recall that the performance of a power cycle can be measured by its

thermal efficiency

, η.
Equation.
Equation.
Equation.
Process flow diagram of a Brayton Gas Power Cycle.

Back Work Ratio

:
The fraction of the work produced by the turbine that is consumed by the compressor.
Equation.

40% - 80%

1% - 2%

Back Work Ratio for gas power cycles:

Back Work Ratio for vapor power cycles:

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Ch9, Lesson E, Page 10 - Thermal Efficiency & BWR of the A-S Brayton Cycle