有限速率过程对活塞式斯特林发动机性能的影响

The Effect of Finite Speed Rate process on Piston Stirling Engine Performance

本文讨论在给定热源温度和压缩比的情况下,过程进行的速率有限,并受热传导不可逆影响的内可逆活塞式斯特林发动机的最优性能,导出以理想气体或范德瓦尔斯气体为工质的斯特林发动机的最大输出功率与热效率的关系,以及最大热效率与输出功率的关系,并推出了一些新的有限时间热力学的性能界限。

Under the conditions of a given heat source temperature and compression ratio the authors discuss the optimal performance of an endoreversible piston Stirling engine influenced by an irreversibility of heat conduction when there exists a finite speed rate process. Derived are the relations between maximum power output and thermal efficiency as well as between maximum thermal efficiency and power output of the Stirling engine with an ideal gas or Van der Waals gas serving as a working fluid. Some new perormance limits of the finite time thermodynamics are also given.