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Brayton Cycle Gas Turbines

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Large stationary brayton cycly gas turbine power plant delivers a powr output of 100MW to an electric generator . Minimum temperature is 300K so T1= 300k max temp is 1600k so T3= 1600k Minimum pressure in the cycle is 100kpa compressor pressure ratio is 14 to 1 so p2/p1 = 14 but turbine efficiency is 85% and compressor efficiency is 80% calculate the Power output of Turbine? What fraction of the turbine output is required to drive compressor? What is thermal effciency of the cycle? Maybe assume constant Cpo 1.004KJ/kg "for cold anal"?? K= 1.4

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Solution
rp=14=P2/P1
Wc,in= Cp(T2-T1)
T2/T1=(p2/P1)^((l-k)/k)
T2=T1 * ...

Solution Summary

Brayton cycle gas turbines are analyzed. The solution contains formulas, calculations and answers. Thermal efficiency of the cycle are given.

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Brayton Cycle and Gas Turbine Thermal Efficiency

A large stationary Brayton cycle gas-turbine power plant delivers a power output of 100MW to an electric generator. The minimum temperature in the cycle is 300K, and the maximum temperature is 1600K. The minimum pressure in the cycle is 100 kPa, and the compressor pressure ratio is 14 to 1. The compressor has an isentropic efficiency of 94% and the turbine and isentropic efficiency of 89%. Calculate the power output of the turbine. What fraction of the turbine output is required to drive the compressor? What is the thermal efficiency of the cycle?

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