Numerical Study on Condensation Heat Transfer Characteristics and Application of Special-shaped Tubes Under Wet Conditions

ZHANG Li; LIU Hongjie; DONG Yue; LI Jian

doi:10.19805/j.cnki.jcspe.2025.240373

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Numerical Study on Condensation Heat Transfer Characteristics and Application of Special-shaped Tubes Under Wet Conditions

更新时间：2026-10-10

- Numerical Study on Condensation Heat Transfer Characteristics and Application of Special-shaped Tubes Under Wet Conditions
- Chinese Journal of Power Engineering Vol. 45, Issue 8, Pages: 1234-1242(2025)
- 作者机构：
  
  1. 上海电力大学能源与机械工程学院,上海,201306
  2. 上海热交换系统节能工程技术研究中心,上海,201306
  3. 歌尔微电子股份有限公司,山东,青岛,266100
  4. 上海发电设备成套设计研究院有限责任公司,上海,200240
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240373
  CLC：
- Online First：12 August 2025，
  
  Published：2025
- 稿件说明：
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张莉,刘宏杰,董跃,李健. 异型管湿工况冷凝换热特性分析及应用的数值研究动力工程学报, 2025, 45(8): 1234-1242 https://doi.

org/10.19805/j.cnki.jcspe.2025.240373
张莉,刘宏杰,董跃,李健. 异型管湿工况冷凝换热特性分析及应用的数值研究动力工程学报, 2025, 45(8): 1234-1242 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240373.

org/10.19805/j.cnki.jcspe.2025.240373 DOI：

摘要

异型换热管因流阻小、换热效果好等优势在换热器研究领域受到了广泛关注。为了帮助异型管更好地应用于工程领域

采用数值模拟方法

在一定入口参数范围内对具有6种椭圆度的椭圆管、半椭圆管和扁管的管外湿气体冷凝换热流场进行了模拟。利用综合性能参数

、析湿系数

等参数分析了异型管外冷凝换热性能随椭圆度变化的规律。然后尝试将椭圆度为0.5的3种异型管分别应用于某圆管烟气冷凝器

并基于数值模拟结果获得异型管烟气冷凝器的传热传质性能。结果表明:3种异型管烟气冷凝器的流动传热综合性能比圆管烟气冷凝器更优

其中半椭圆管烟气冷凝器的

比圆管烟气冷凝器增大了10.95%

增大了6.04%

冷凝换热性能最优。

Abstract

Special-shaped heat exchange tubes have received extensive attention in the research field of heat exchangers due to their performance advantages such as low flow resistance and good heat transfer efficiency. In order to assist better application of special-shaped tubes in engineering field

numerical simulation method was used to simulate wet gas condensation heat exchange flow field outside the tubes of elliptical tubes

semi elliptical tubes

and flat tubes with six different ellipticities within a certain range of inlet parameters. The variation law of the external condensation heat transfer performance of the special-shaped tube with ellipticity was analyzed by using such parameters as the comprehensive perf

ormance parameter

and the moisture evolution coefficient

. Then

attempts were made to apply three kinds of special-shaped tubes with an ellipticity of 0.5 respectively to a certain circular tube flue gas condenser

and the heat and mass transfer performance of the special-shaped tube flue gas condenser was obtained based on the numerical simulation results. Results show that the comprehensive performance of the three types of special-shaped tube flue gas condensers is better than that of the circular tube flue gas condenser. Among them

the

value of the semi elliptical tube flue gas condenser is 10.95% higher than that of the circular tube flue gas condenser

and the

is 6.04% higher. Its condensation heat transfer performance is the best.

关键词

Keywords

references

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