中间辐射体对强化炉内传热的影响规律  

Influence Law of Intermediate Radiator on Heat Transfer Enhancement in Furnace

作　　者：李成 娄锦东[2] 张卫军 李娜 LI Cheng;LOU Jindong;ZHANG Weijun;LI Na(School of Metallurgy,Northeastern University,Shenyang 110819,China;Shenyang Special Equipment Inspection and Research Institute,Shenyang 110035,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]沈阳特种设备检测研究院,辽宁沈阳110035

出　　处：《工业炉》2020年第2期11-16,共6页Industrial Furnace

基　　金：国家重点研发计划(2017YFB0304201);国家自然科学基金(U1760115)。

摘　　要：本文建立了加热炉内燃烧过程的数值模型,分别进行了基础模型与带有不同形状的中间辐射体模型炉膛温度场的数值模拟。结果表明:在相同条件下,通过在炉墙上安装中间辐射体可以有效提高加热炉的传热效率,从而节省燃料,达到节能减排的效果。对于不同形状的中间辐射体而言,梯形中间辐射体较矩形中间辐射体更有优势。对于相同形状的中间辐射体而言,厚度相对较低的中间辐射体强化辐射传热效果较好。并且,中间辐射体对靠近炉膛两侧的强化辐射效果比靠近中间的效果更好。The numerical model of combustion in heating furnace is established and the numerical simulation of the temperature field of the furnace based on the basic model and different shapes of intermediate radiator models is simulated. The results show that under the same conditions, by installing an intermediate radiator element on the furnace wall, the heat transfer efficiency of the heating furnace can be effectively improved, thereby effectively saving fuel and achieving the effect of energy saving and emission reduction. For different shapes of intermediate radiators, the trapezoidal intermediate radiator is more advantageous than the rectangular intermediate radiator. For the same shape of intermediate radiator, the relatively less thickness of the intermediate radiator enhances the radiation heat transfer effect well. Moreover,the effect of the intermediate radiator on the enhanced radiation near the sides of the furnace is better than that of the middle.

关 键 词：加热炉 辐射传热 中间辐射体 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]