Exergy-based ecological optimization of linear phenomenological heat-transfer law irreversible Carnot-engines

Lingen Chen, Xiaoqin Zhu, Fengrui Sun and Chih Wu

Applied Energy, 2006, vol. 83, issue 6, 573-582

Abstract: The optimal exergy-based ecological performance of a generalized irreversible Carnot-engine with losses due to heat-resistance, heat leakage and internal irreversibility, in which the heat-transfer between the working fluid and the heat reservoirs obeys a linear phenomenological heat-transfer law, is derived by taking an exergy-based ecological optimization criterion as the objective. This consists of maximizing a function representing the best compromise between the power output and entropy-production rate of the heat engine. A numerical example is given to show the effects of heat leakage and internal irreversibility on the optimal performance of the generalized irreversible heat-engine. The results provide theoretical guidance for the design of practical engines.

Keywords: Finite-time; thermodynamics; Linear; phenomenological; heat-transfer; law; Irreversible; heat-engine; Exergy-based; ecological; optimization (search for similar items in EconPapers)
Date: 2006
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Citations: View citations in EconPapers (9)

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