Numerical simulation of convection condensation heat transfer of H-fixed tubes with wet flue gas

被引：0
|
作者：
He Y. [1 ]
Wang L. [1 ]
Tang C. [1 ]
Che D. [1 ]
机构：
[1] School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, Shaanxi
来源：
Huagong Xuebao/CIESC Journal | 2019年 / 70卷 / 12期
关键词：
Dehumidifying conditions; Fin efficiency; H-type finned tube; Heat and mass transfer; Round finned tube;
D O I：
10.11949/0438-1157.20190523
中图分类号：
学科分类号：
摘要：
The numerical simulation is used to simulate the convective condensation heat transfer characteristics of the fully developed section of the H-type and round fin-tube heat exchanger channels under wet conditions. The SIMPLER algorithm is used to calculate the pressure and velocity coupling. The wet flue gas flow rate ranges from 1 to 5 m/s, and the water vapor mass fraction ranges from 5% to 13%. The effects of different inlet velocity and water vapor mass fraction on heat and mass transfer coefficient, heat transfer, condensate flow rate and fin efficiency of H-shaped finned tube and circular finned tube were discussed. The calculation results show that the heat transfer capacity of H-type finned tube is obviously stronger than that of circular finned tube, but the condensation production is less than that of circular finned tube. Meanwhile, the total finned efficiency and latent heat finned efficiency of H-type finned tube are less than that of circular finned tube. © All Right Reserved.
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页码：4556 / 4564
页数：8
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