本文介绍了外不可逆内可逆循环热力系统的输出功率、效率、工质等效吸/放热温度,吸/放热率与高/低温换热器总传热系数比值的关系,给出了无量纲的关系式和功率-效率关系图,以及在选定最佳效率后提高输出功率与增加总传热系数比值关系的作图设计法,为优化传热与热力循环耦合的热力系统优化设计和运行调节提供了理论参考.“,”This paper provides the relationship of output power, efficiency, equivalent temperatures of heat absorption and release of working medium, heat absorption and release rates, total heat transfer coefficient ratio between high and low temperature heat exchangers of exo-irreversible endoreversible cycle thermodynamic system. The dimensionless equations and power-efficiency diagram are given. When the optimal efficiency is fixed, the way to increase the output power and total heat transfer coefficient ratio is also provided. This work would be a theoretical reference for the optimal design and operation regulation of heat transfer and thermodynamic cycle coupled thermodynamic system.