管式加热炉辐射室对流传热计算的研究
Calculation of Convection Heat Transfer in Tubular Heating Furnace Radiation Chamber
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- 引用格式:
-
张津,郭晓艳,董君.管式加热炉辐射室对流传热计算的研究[J].天然气与石油,2011,29(5):0.doi:
.Calculation of Convection Heat Transfer in Tubular Heating Furnace Radiation Chamber[J].Natural Gas and Oil,2011,29(5):0.doi:
- DOI:
- 作者:
- 张 津1 郭晓艳2 董 君1
- 作者单位:
- 1.中国石油集团工程设计有限责任公司西南分公司，2.中国石油大学（华东）
- 关键词:
- 加热炉；辐射室；对流传热；射流模型
Heating furnace；Radiation chamber；Convection heat transfer；Jet flow model
- 摘要:
- 对圆筒式管式加热炉辐射室内的对流传热部分进行了数值模拟。采用了一种射流模型，把辐射室按烟气流动的不同情况分为质量不变区、射流区和回流区，用不同的边界条件限定，分别对这三个区进行了数学描述，用VB语言编程实现了计算过程。选用一个常压炉作为实例，对辐射室的炉管外壁温度进行了模拟计算，计算过程中，辐射传热部分采用了蒙特-卡罗方法。综合考虑了辐射传热和对流传热计算得到的炉管外壁温度分布，与仅考虑辐射传热所得的炉管外壁温度进行了比较，前者与理论推断更加吻合
Numerical simulation is conducted on convection heat transfer in cylindrical tube type furnace radiation chamber. Adopted is a jet flow model to divide the radiation chamber into such three areas as the same quality area，jet flow area and backflow area according to different conditions of smoke movement，adopted are different boundary conditions for limiting the areas，mathematically described are the three areas respectively and realized is the calculation process by using VB language programming. Taking a normal pressure furnace for example，simulation calculation is conducted on outer wall temperature of furnace tubes in the radiation chamber and adopted is the Monte?鄄Carlo method for radiation heat transfer calculation. Outer wall temperature distribution of furnace tubes calculated through comprehensively considering radiation heat transfer and convection heat transfer is compared with that calculated through only considering radiation heat transfer，the former is more identical with theoretically inferential value.
