Effect of combined heat transfer on the thermoeconomic performance of an irreversible solar-driven heat engine at maximum ecological conditions

M. A, N. Sánchez-Salas

Abstract


In the present paper, we study the thermoeconomic optimization of an irreversible heat engine by using finite-time/finite-size thermodynamics theory. In this study we take into account losses due to heat transfer across finite time temperature differences, heat leakage and internal irreversibilities in terms of a parameter which comes from the Clausius inequality. In the considered heat engine model, the heat transfer from the hot reservoir to the working fluid is assumed to be simultaneous by radiation and conduction modes and the heat transfer to the cold reservoir is assumed of the conduction type. In this work, the optimum performance is analyzed under the effect of two design parameters when the heat engine operates under two objective functions: the power output per unit total cost and the ecological function per unit total cost. The effects of the technical and economical parameters on the thermoeconomic performance have been also discussed under the aforementioned two criteria.

Keywords


Thermoeconomic performance; irreversible heat engine; optimization

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Revista Mexicana de Física S

 ISSN: In Process

  Non periodical electronic journal published by Sociedad Sociedad Mexicana de Física, A.C

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