电热隧道窑温场分析与模拟

The analysis and simulation of the temperature distribution in electric tunnel furnaces

利用热辐射原理,采用热平衡法对电热隧道窑的高温恒温区温场进行了分析和模拟.计算中将发热棒分解为无数微元发热面与烧结体进行热交换,依据辐射强度定律,建立了烧结体接收能量的数学模型,并用计算机进行了模拟计算.结果表明,依据模拟结果来优化硅碳棒的排布,可使结构设计更加合理,进而可以获得分布均匀的恒温区温场.计算结果已在窑炉设计中应用,实践效果良好.

The temperature distribution on the high temperature side of an electric tunnel furnace is analysed and simulated on the basis of the principle of thermal radiation by the way of THB （Thermal Heat Balance）. The heated silicon carbon sticks are decomposed into innumerable tiny heating faces, which exchange the heat with the heated materials. A numerical model based on the radiation intensity law is constructed to calculate the energy absorbed by the heated materials and simulated by a computer. The results showed that the even distribution of temperature can be obtained by optimizing the arrangement of the silicon carbon sticks according to the calculation results to make the structure design more reasonable. These calculation results have been used in the practical designs and the expected objectives achieved.