辐射传热时有限热源多级连续卡诺热机系统的最大输出功  

Maximum work output of finite thermal capacity multistage continuous Carnot heat engine system with radiation

作　　者：李俊[1] 陈林根[1] 孙丰瑞[1] 

机构地区：[1]海军工程大学动力工程系,湖北武汉430033

出　　处：《热科学与技术》2008年第1期41-45,共5页Journal of Thermal Science and Technology

基　　金：教育部新世纪优秀人才支持计划项目(NCET-04-1006);全国优秀博士学位论文作者专项资金资助项目(200136)

摘　　要：对高低温热源均为有限热源、工质与高温热源间辐射传热、工质与低温热源间线性传热的多级连续卡诺热机系统最大输出功的最优温度曲线进行了研究,利用最优控制理论和"伪线性传热"模型得出了其最优温度曲线为驱动流体温度随流速和过程时间成单调递减变化,求出了其最大输出功,并与低温热源为无限热源下的结果进行了比较。Optimal temperature curve of two finite thermal capacity reservoirs multistage continuous Carnot heat engine system for maximum work output, in which the heat transfer between heat source and the working fluid obeys radiation law and the heat transfer between heat sink and the working fluid obeys linear law, was determined. It is obtained by using optimal control theory and ＂pseudo-Newtonian＂ model. It is shown that the temperature of driven fluid changes monotonic decrease with respect to flow velocity and process duration. The maximum work was obtained. The obtained results were compared with those obtained with infinite low temperature heat sink.

关 键 词：辐射传热 有限热源 多级连续卡诺热机 最大输出功 最优控制 

分 类 号：TK124[动力工程及工程热物理—工程热物理]