一类不可逆奥托循环性能的优化分析

Optimal Analysis of the Performance of an Irreversible Otto Cycle

应用有限时间热力学方法,导出一类不可逆奥托循环的输出功和效率与不可逆绝热因子、压缩比、高低温比之间的关系,分析绝热过程的不可逆性对奥托循环性能参数的影响.所得结果可为实际热机的优化设计和性能改善提供一些新的理论依据.

In order to provide new reference for the optimal design and the performance improvement of real Otto engines,the relations of work output and efficiency with irreversible adiabatic factor,compression ratio and high-low temperature ratio are derived for an irreversible Otto cycle,using the method of finite time thermodynamics.The influence of the irreversible adiabatic processes on the cycle performance is analysed.