保温罩传热分析及纤维毡厚度优化研究

Heat Transfer Analysis of Thermal Insulation Cover and Fiber Felt Thickness Optimization

对保温罩入口截面进行了传热分析,通过数值模拟确定了保温罩内外壁及厚度方向温度分布,并对纤维毡厚度进行参数化优化设计。结果表明,纤维毡厚度为40 mm时,保温罩内壁最高、最低温度分别为882.2℃和770.4℃,外壁最高、最低温度分别为55.8℃和40.7℃,实测外壁最高温度与计算值相吻合。随着纤维毡厚度的等值增加,保温罩外壁最高温度的差值不断减小。

The heat transfer of entrance section of thermal insulation cover was analyzed. Through numerical simulation, the temperature distribution of the inner and outer wall and the thickness direction of the insulation cover was clarified, and the parameters of the fiber felt thickness were optimized. The results show that the highest and lowest temperatures of the inner wall of the thermal insulation cover are 882.2℃ and 770.4℃, the outers wall are 55.8℃ and 40.7℃, respectively, when fiber mat thickness is 40 mm. The maximum temperature of the measured outer wall is consistent with the calculated value. With the increase of the thickness of the fiber felt, the difference of the maximum temperature on the outer wall of the thermal insulation cover decreases.