一种热漏损失对斯特林热机优化性能的影响

The Influence of Heat Leak by Generalized Heat Transfer Laws on Optimal Performance of a Class Stirling Heat Engine

应用有限时间热力学理论 ,建立一类较普遍的不可逆斯特林热机模型 ,研究存在热阻、热漏、回热损失斯特林热机的优化性能 ,导出了热漏损失服从一般传热规律时热机的功率与效率间的优化关系 ,讨论了不同情况下热漏和回热损失对热机性能的影响 ,从而可为二热源热机的研制和优化设计提供新的理论指导 .

In this paper, the model of a class generalized irreversible Stirling heat engine is set up, we report a study on the optimal performance of an irreversible Stirling heat engine with thermal resistance, heat leak and regenerative loss using finite time thermodynamics. The optimal relation between the power and efficiency under heat leak by general heat transfer law is derived. The effect of heat leak and regenerative loss with various value on performance of heat engine is discussed.The conclusions obtained here may provide the observed performance of a real heat engine and some new theoretical guidance for the manufacture and the optimal design of two heat source engines.