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2005•Journal of Naval University of EngineeringRequires access

Efficiency optimization of an endoreversible closed intercooled regenerated Brayton cycle

Fengrui Sun

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Abstract

Taking thermal efficiency as optimization objective, this paper applies finite-time thermodynamics to optimize the intercooling pressure ratio and the heat conductance distribution of hot- and cold-side heat exchangers, intercooler and regenerator of an endoreversible intercooled regenerated Brayton cycle coupled to constant-temperature heat reservoirs. Double-maximum efficiency is obtained by further optimizing the total pressure ratio. The effects of some important parameters on the optimal results are analyzed by detailed numerical examples.

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What this paper is about

Taking thermal efficiency as optimization objective, this paper applies finite-time thermodynamics to optimize the intercooling pressure ratio and the heat conductance distribution of hot- and cold-side heat exchangers, intercooler and regenerator of an endoreversible intercooled regenerated Brayton cycle coupled to constant-temperature heat reservoirs. Double-maximum efficiency is obtained by further optimizing the total pressure ratio. The effects of some important parameters on the optimal results are analyzed by detailed numerical examples.

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Available abstract

Taking thermal efficiency as optimization objective, this paper applies finite-time thermodynamics to optimize the intercooling pressure ratio and the heat conductance distribution of hot- and cold-side heat exchangers, intercooler and regenerator of an endoreversible intercooled regenerated Brayton cycle coupled to constant-temperature heat reservoirs. Double-maximum efficiency is obtained by further optimizing the total pressure ratio. The effects of some important parameters on the optimal results are analyzed by detailed numerical examples.

Key concepts: Intercooler, Brayton cycle, Overall pressure ratio, Regenerative heat exchanger, Heat exchanger, Thermodynamics, Thermal efficiency, Materials science

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