Q~∝(ΔT^(-1))时内可逆卡诺热机的频率特性

Frequency-dependent performance of an endoreversible Carnot engine with Q~∝(ΔT^(-1))

以内可逆卡诺热机模型为基础 ,考虑工质与热源间传热服从线性唯象传热定律 Q∝ (ΔT- 1 ) ,寻求循环频率与热机特性的关系。通过分析 ,得出了不同于牛顿传热定律时的循环功率、效率以及可利用温差与循环频率和循环吸、放热时间比的关系 ,对合理的选择热机工作点有一定的指导意义。

On the basis of endoreversible Carnot heat engine model, the frequency-dependent performance was analyzed while the heat transfers between working fluid and heat reservoirs obey linear phenomenological heat transfer law Q∝(ΔT -1). The relations among average power output, efficiency, available temperature drop and cycle frequency, stroke ratio are derived, which are different from those with Newton's law. The results can provide guidance for selecting the appropriate working point of heat engines.