Gas Turbine Efficiency

For a simple cycle gas turbine the efficiency is determined by the pressure ratio of the compressor.


r = pressure ratio
γ = ratio of heat capacities (=1.4 for air)

Simple cycle gas turbine efficiency versus pressure ratio.

There are a number of ways of increasing the engine efficiency other than just increasing the pressure ratio:


H Cohen, G F C Rogers and H I H Saravanamuttoo, "Gas Turbine Theory", 3rd Ed., Longman Scientific & Technical.

See also: Gas Turbine.

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Subjects: Engines Thermodynamics