用段法分析高辐射率涂料强化传热的机理  

ANALYSIS OF HEAT TRANSFER MECHANISM FOR HIGH RADIATION COATING USING ZONE METHOD

作　　者：聂宇宏[1] 陈海耿[1] 杨泽宽[1] 

机构地区：[1]东北大学热能工程系

出　　处：《冶金能源》1997年第6期33-36,共4页Energy For Metallurgical Industry

摘　　要：用段法计算了灰体和非灰介质加热炉中的热交换，分析了炉壁热阻和炉壁内表面黑度对炉内辐射换热的影响，阐明在不同的介质中，炉壁特性对炉内辐射传热影响的机理是不同的，第一次得出在非灰介质加热炉中，炉壁温度会随炉壁黑度的增大而降低的结论。The zone method is used to calculate the heat transfer in a heating furnace with gray and nongray media. The influence of the wall resistance and wall emissivity on the radiative heat transfer in the furnace is analyzed. It is shown that the influence of the wall character on the radiative heat transfer is different with different media. The result that wall temperature can reduce with the increase of wall emissivity in a non-gray medium is gained in this paper for the first time.

关 键 词：段法数学模型 炉壁特性 辐射换热 高辐射率涂料 

分 类 号：TK124[动力工程及工程热物理—工程热物理]