Abstract
SYNOPSIS Exergy-based ecological optimisation of a universal endoreversible thermodynamic cycle model is performed using finite time thermodynamics or entropy generation minimisation. The cycle consists of two constant thermal-capacity heating branches, a constant thermal-capacity cooling branch and two adiabatic branches. An ecological optimisation criterion is taken as the objective, which consists of maximising a function representing the best compromise between the power output and exergy loss rate of the heat engine. The analytical formulae for power, efficiency and ecological function of the universal endoreversible thermodynamic cycle with heat resistance loss are derived. The comparative performance analyses for Diesel, Otto, Atkinson, Brayton and Dual-cycles are carried out by a detailed numerical example, which show that the ecological criterion is more available.
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