台车炉应用热辐射强化剂的节能机理  

Energy saving mechanism of heat radiation intensifier in room-shaped furnaces

作　　者：夏德宏[1] 吴祥宇[1] 史小英[1] 张省现[1] 

机构地区：[1]北京科技大学热能工程系

出　　处：《冶金能源》2005年第2期25-28,43,共5页Energy For Metallurgical Industry

摘　　要：应用“匹配吸收”和“频带窗口”理论 ,对台车炉内有参与性介质存在时的辐射换热进行了分析 ,建立了新的辐射换热模型 ,弥补了传统计算中将炉衬视为辐射绝热面和将烟气视为灰气体的不足。研究表明 :提高炉衬的发射率可以有效地提高料坯的净辐射热流 ,从而提高炉窑的热效率。The heat radiation exchange is analyzed in room-shaped furnace with participating medium and a new heat radiation model has been established according to the principles of“Match Absorption”and“Spectrum Window”.The new model makes up the shortage of conventional heat exchange calculation method in which the furnace lining was looked to be a radiation insulator and the participating medium was simply regarded as gray gas.It is proved that the net heat radiation exchange to the reheating material surface can be enhanced with the increase of the furnace lining emissivity.The thermal efficiency of room-shaped furnaces is improved effectively.

关 键 词：节能机理 应用 强化剂 热辐射 台车炉 参与性介质 匹配吸收 辐射换热 换热模型 辐射热流 发射率 热效率 炉衬 炉内 炉窑 

分 类 号：TK175[动力工程及工程热物理—热能工程]