煤燃烧产物的辐射特性对炉内辐射传热过程的影响

Influence of Radiation Properties of Coal Combustion Products on Radiation Heat Transfer in Furnaces

该文利用离散坐标法分析了煤燃烧产物的辐射特性对炉内辐射传热过程的影响。分析结果表明，在减弱系数相同的条件下，反照率对壁面热流及烟气温度的分布有很大的影响；而散射相函数对壁面热流及烟气温度的分布基本上没有影响。在炉内传热计算中必须考虑烟气的散射，且散射可作各向同性处理。

The paper analizes,with the help of discrete coordinates,the influence of combustion products of coal on radiation heat transfer.Analysis results show that,assuming same attenuation factors,the reflectivity practically has no influence on the wall′s heat flux and temperature distribution.In heat transfer calculations of furnaces the scatter effect of gases,which may be assumed equal in all directions,has to be considered.