# Brayton Cycle and Gas Turbine Thermal Efficiency

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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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