中文摘要：

本文工作是一种实际热力系统参数优化方法的基础预备工作,首先通过等价变换方法,把有限热容热源和工质循环的实际热力系统变换为等价定温热源和等价内可逆卡诺循环热机模型,其次用定常态有限时间热力分析法,求解出热力系统的输出功率、效率、换热器总传热系数与工质的吸热、放热等效温度之间关系式,而后借助无量纲归一化方法给出热机输出功率与效率的关系图,本文工作为后篇的实际热力系统的参数优化提供了理论基础。

英文摘要：

An effective optimization method for actual thermodynamic system parameters was proposed in this study.An actual thermodynamic system with finite capacity heat source and reality working fluid cycle was equivalently transformed to an ideal model with constant temperature heat source and reversible Kano cycle.And steady finite-time thermodynamics analysis was applied to get the relationship between the output power,efficiency and total heat transfer coefficient with the equivalent temperature of hot/cold source.The normalized relationship figure between the output power and efficiency of heat engine was also given in article.This method provides a theoretical basis for parameters optimization of actual thermodynamic system.