压力容器2017，Vol.34Issue(10)：43-48,6.DOI:10.3969/j.issn.1001-4837.2017.10.007
螺旋折流板换热器数值模拟研究与对比分析
Numerical Simulation Research and Comparison Analysis of Helical Baffle Heat Exchanger
常佳 1张晓兰 2金东鸽 1董延阳2
作者信息
- 1. 中国船舶重工集团公司第七二五研究所,河南洛阳471000
- 2. 洛阳双瑞特种装备有限公司,河南洛阳471000
- 折叠
摘要
Abstract
After the comparison of numerical simulation result of segmental baffle heat exchanger and helical baffle heat exchanger having identical condition,the present research find that the axial velocity component is dominant in majority of shell side,which cause the shell side pressure and heat duty of helical baffle heat exchanger is smaller than helical baffle heat exchanger.About the high tangential flow in triangle zone,it is the final reason that triangle zone is short circuit contact zone between up-stream and downstream baffle region in different quadrant,so there is large pressure difference in this zone,which finally cause the fluid flow short circuit.Meanwhile,the present research also compare the numerical simulation result and engineering semi-empirical algorithm result,it is found that the heat transfer coefficient h from engineering semi-empirical algorithm is lower,and the treatment of net mass flow rate through half symmetric plane in shell side is simpler in engineering semi-empirical algorithm,which doesn't consider the influence of adjacent triangle zone's short circuit.So it is necessary to consider the heat transfer coefficient h's equation in helical baffle heat exchanger thermal design and rating from beginning.关键词
螺旋折流板换热器/数值模拟/对流传热Key words
helical baffle heat exchanger/numerical simulation/convective heat transfer分类
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常佳,张晓兰,金东鸽,董延阳..螺旋折流板换热器数值模拟研究与对比分析[J].压力容器,2017,34(10):43-48,6.
