Abstract

Applying finite-time thermodynamics and air standard assumption, the irreversible Diesel cycle model is established with friction loss, heat transfer loss and internal irreversibility loss considered. Calculating the entropy generation rate by loss items, the cycle ecological function performance is optimized. The performance characteristics of ecological function and entropy generation rate are derived, and the impacts of three losses on ecological function performance are examined by the numerical method. The work in this paper can provide some guidelines for designers and manufacturers to assess the practical Diesel cycle performance.

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