有限速率过程对热机输出功率和效率的影响

Effect of Finite Rate Processes on Power Output and Efficiency of an Engine

讨论了在给定的两个热源温度和压缩比的情况下,有惯性效应和热阻而使过程速率有限的热机的最优性能。导出这类热机以理想气体或范德瓦耳斯气体为工质时的最佳效率与输出功率间的关系。并推出一些与压缩比有关的新结论。

Under the circumstances of two given temperatures of heat sources and compression ratio, the optimal performance of engines with finite process rate due to the existence of inertial effect and heat resistance is discussed. The relation between the optimal efficiency and power output of the engines for an ideal or van der Waals gas as a working fluid is derived. Some new conclusions concorning the compression ratio are deduced.