Inderscience Publishers

Performance investigations under maximum ecological and maximum economic conditions of a complex Brayton cycle

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A complex Brayton cycle is investigated under maximum economic and maximum ecological conditions. The economic function defined as the power output divided by the total cost, while the ecological function defined as the power output divided by the entropy generation rate, is optimised with respect to the cycle temperatures, reheat and intercooling pressure ratios for a typical set of operating conditions. It is found that there are optimal values of the turbine outlet temperature, intercooling, reheat and cycle pressure ratios at which the cycle attains the maximum values of the economic function, ecological function power output, efficiency and the minimum entropy generation rate.

Keywords: complex Brayton cycle, economic function, ecological function, entropy generation rate, efficiency, power output, exergy

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