斯特林循环的理想和实际效率的讨论

Discussionon the Ideal and Actual Efficiency of the Stirling Cycle

套用大学物理热循环效率的计算公式于理想斯特林热机时,会出现原理上的差错,这是由斯特林热机的特殊设计造成.本文首先从热机效率的基本公式出发,阐述斯特林热机的工作原理,从中看到斯特林热机独特的设计原理使其效率的计算不同于基本公式的原因;其次给出实际斯特林热机工作时热损耗的来源分析;最后结合有关论文的结论,给出工质为范德瓦耳斯气体时的效率与体积比的关联.

Applying the formula of the college physics level to the ideal efficiency Stirling heat engine ,the error appears on the principle level ,which is caused by the special design of the Stirling heat engine .Firstly ,I expounds the working principle of the Stirling Engine from the basic formula for heat engine efficiency ,which indicates the reason why the efficiency of Stirling heat engine is different from the basic formula due to its unique design ;secondly I analysis the sources of energy loss of the practical Stirling heat engine ;Finally ,com bining the conclusions related to this paper ,I give the efficiency and the associated volume ratio of the Stirling cycle which uses the van der Waals gas as working fluid .