摘要
通过优化罐式炉的炉墙结构可以改善炉体通过炉墙对外的散热损失情况,本文通过改变炉墙厚度及材料选取,对罐式炉不同的炉墙结构进行了传热仿真计算及分析,为罐式炉墙体结构的优化设计与炉墙材料选取提供理论依据。炉墙传热计算是变物性非定常的稳态计算,因此本文采用CFD手段进行了多个算例计算,计算结果表明增加炉墙厚度,可以降低炉墙外壁面理论最高温度,尤其是增加低导热系数的轻质保温层,降温效果更加明显;此外,还分析了保温层位置对炉墙散热的影响规律,在控制炉墙总厚度一定时,随着保温层向高温区方向移动,炉墙外壁面温度会不断降低,炉墙散热损失减小。
The heat dissipation loss through the shaft kiln wall can be lowered by optimizing the wall structure of shaft kiln.In this paper,the heat transfer simulation calculation and analysis are carried out for different wall structures of shaft kiln,by changing the thickness and materials of wall structures of shaft kiln,so as to provide a theoretical basis for the structure optimization design and the materials selection of shaft kiln wall.CFD is adopted for several calculation examples,since the heat transfer calculation of shaft kiln wall is a steady-state calculation with unsteady variable physical property.The cal-culation results show that the increased wall thickness can reduce the theoretical maximum temperature of the wall outer face,and the cooling effect is more obvious especially by adding the light insulation layer with low thermal conductivity;In addition,the influence of the insulation layer position on the heat dissipation of the shaft kiln wall is also analyzed.Keeping the total wall thickness unchanged,as the insulation layer moves to the direction of high-tem-perature zone,the temperature of the wall outer face and the wall heat dissipation loss will decrease.
作者
刘超
Liu Chao(Shenyang Aluminum and Magnesium Engineering&Research Institute Co.,Ltd.,Shenyang 110001,China)
出处
《轻金属》
北大核心
2022年第7期44-48,共5页
Light Metals
关键词
罐式炉
炉墙结构
优化
传热仿真
shaft kiln
shaft kiln wall structure
optimization
heat transfer simulation
