Endoreversible heat-engines for maximum power-output with fixed duration and radiative heat-transfer law

Hanjiang Song, Lingen Chen and Fengrui Sun

Applied Energy, 2007, vol. 84, issue 4, 374-388

Abstract: Optimal configuration of a class of endoreversible heat-engines, with fixed duration and subject to the radiative heat-transfer law q [is proportional to] [Delta](T4), has been determined. The optimal cycle that maximizes the power output of the engine has been obtained using optimal-control theory, and the differential equations are solved by a Taylor-series expansion. It is shown that the optimal cycle has six branches, including two isothermal branches and four maximum-power branches, without adiabatic branches. The interval of each branch has been obtained, as well as the solutions of the temperatures of the heat reservoirs and working fluid. A numerical example is given. The results are compared with those obtained using the Newton's heat-transfer law for maximum power output and those using a linear phenomenological heat-transfer law for maximum power output.

Keywords: Radiative; heat-transfer; law; Endoreversible; heat-engine; Optimal-control; theory; Optimal; configuration; Generalized; thermodynamic-optimization (search for similar items in EconPapers)
Date: 2007
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