广义不可逆卡诺热机的频率特性

Frequency-dependent performance of generalized irreversible Carnot engine

以广义不可逆卡诺热机模型为研究对象,基于牛顿传热定律,研究循环频率与热机特性的关系。由数值计算分析了热漏、内不可逆性的影响特点,得出了不同于内可逆卡诺热机模型的特性关系,对实际工作中合理选择热机工作点有一定的指导意义。

On the basis of a generalized irreversible Carnot engine model, the frequency-dependent performance of the engine was analyzed when the heat transfers between working fluid and heat reservoirs obey the Newton＇s laws. Numerical examples show the effects of heat leakage and internal irreversibility on the performance of the model, which are different from those of endoreversible Carnot engine model. The results can provide guidelines for selecting appropriate working point of heat engines.