伴有参与性介质的开口系统传热研究  

Heat transfer in opening system with participating mediums

作　　者：夏宇 仇性启[1] 惠媛媛 

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580

出　　处：《浙江大学学报（工学版）》2016年第7期1367-1372,共6页Journal of Zhejiang University：Engineering Science

基　　金：中国石油大学(华东)研究生创新工程资助项目(YCX2015034)

摘　　要：基于(火积)耗散极值原理,综合考虑高温烟气和高温固体壁面间的辐射对流耦合传热过程,推导出适用于伴有参与性介质的等温漫射灰体开口系统传热分析的(火积)平衡方程,并验证该方程的正确性,拓展了(火积)理论应用范围.将该方程应用于现代燃烧单元结构分析,通过Matlab软件编程,理论计算得到再辐射壁面开口宽度、燃烧筒到烟气出口垂直距离、炉灶开口宽度等参数对热效率、锅底和燃烧筒传热量、再辐射壁面温度的影响规律,指出炉灶开口宽度是影响现代燃烧单元传热性能的关键结构参数.The entransy balance equation on isothermal diffused gray body opening system with participatingmediums was obtained based on the extremum entransy dissipation principle （EEDP） and coupled heattransfer of radiation and convection between high temperature gas and solid surface. The validity of theequation was proved and the application field of entransy theory was expanded. For the structural analysisof modern burning unit, some parameters’ （ reradiation surface opening width, vertical distance betweenburning tube and gas outlet and stove opening width） influencing laws on thermal efficiency, heat transferquantity of pan and burning tube and reradiation surface temperature were obtained by theoretical calculationwith application of the equation through the software Matlab. The stove opening width was the keystructural parameter of affecting heat transfer performance of modern burning unit.

关 键 词：(火积)耗散 等温漫射 传热 现代燃烧单元 

分 类 号：TK11[动力工程及工程热物理—热能工程]