【作者】 丁建亮； 温治； 刘训良； 田野； 王丽红； 豆瑞锋；

【Author】 Ding Jian-liang、Wen Zhi、Liu Xun-liang、Tian Ye、Wang Li-hong、Dou Rei-feng(School of Mechanical Engineering,University of Science and Technology Beijing,Beijing,100083)

【机构】 北京科技大学；

【摘要】 本文建立了直套管型自身预热式辐射管的二维轴对称热过程数学模型,采用FLUENT软件对辐射管的温度场进行了数值模拟,并对辐射管的换热器、燃烧器和内衬管等进行了结构和参数优化。结果表明:随着燃料喷射速度和角度的增加,辐射管外壁的温度均匀性降低;内衬管半径及长度增加可以改善燃烧状况,增加换热量,而增设肋片和采用螺旋流等改善换热器的措施可以加强余热回收的效果。更多还原

【Abstract】 A two-dimensional axisymmetric model is developed for the self-regenerative radiant tube,according to which the temperature field of radiant tube is numerically simulated with FLUENT software.And then the structure and concerning parameters of the heat exchanger,burner and inner pipeline of the radiant tube are optimized.The results show that the temperature uniformity of outer tubal wall decreases with the increase of fuel jet velocity and angel.Combustion condition could be improved if the radius of inner pipeline is appropriate and the length increases.Moreover,waste heat recovery could be strengthened by such heat exchanger-restructuring measures as adding the fins and helix structure.更多还原