Brayton Cycle - Gas Turbine Efficiency

Ideal Brayton-cycle thermal efficiency given pressure ratio and specific-heat ratio - the air-standard LM2500/MGT baseline.

BraytonGas turbineThermo

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This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\eta_{Brayton} = 1 - \frac{1}{r_p^{(k-1)/k}}

Symbol	Meaning	Unit
$r_p$	Compressor pressure ratio
$k$	Specific-heat ratio

Source: Cohen, Rogers & Saravanamuttoo - Gas Turbine Theory

Ideal Brayton-cycle thermal efficiency given pressure ratio and specific-heat ratio - the air-standard LM2500/MGT baseline.