变热容影响下不可逆Dual热机的性能特性

Performance Characteristics of an Irreversible Dual Heat Engine under the Variable Heat Capacities

本文研究变热容、绝热过程不可逆性以及透过气缸壁的热漏损失等因素对不可逆Dual热机性能的影响.通过数值计算获得了Dual热机的性能特性曲线,得出了一些重要参数的优化区间,并讨论了绝热过程不可逆性和变热容对循环性能的影响.

In the present paper,the effects of the variable heat capacities of the working fluid,the irreversibility in the adiabatic processes and the heat leak losses through the cylinder wall on the irreversible Dual heat engine are discussed in detail.By using numerical solutions,some important performance characteristics curves of the Dual heat engine are presented.The optimum criteria of some important parameters are given.Moreover,the influence of the irreversibility in the adiabatic processes and the variable heat capacities on the performance of the cycle is discussed in detail.