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In a gas turbine with two-stage compression and expansion, the total pressure ratio is 12. Air...

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Mechanical Engineering

In a gas turbine with two-stage compression and expansion, thetotal pressure ratio is 12. Air enters the compressor at atemperature of 320 K and the turbine at a temperature of 1320 K.The isanthropic efficiency of the compressors is 75%, theefficiency of the turbines is 87% and the regenerator is 78%.Considering the change of specific temperatures withtemperature;
a) back work rate,
b) calculate the thermal efficiency of the cycle.

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