Influence of twisty flow heat exchanger's structural parameters on flow field and temperature field

GU Xin; LUO Yuankun; XIONG Xiaochao; WANG Ke; TAO Zhilin

doi:10.11949/j.issn.0438-1157.20171612

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Influence of twisty flow heat exchanger's structural parameters on flow field and temperature field

更新时间：2025-12-10

- Influence of twisty flow heat exchanger's structural parameters on flow field and temperature field
- CIESC Journal Issue 8, Pages: 3390-3397(2018)
- 作者机构：
  
  1. 郑州大学化工与能源学院, 河南省过程传热与节能重点实验室,河南,郑州,450002
  2. 中国烟草总公司郑州烟草研究院,河南,郑州,450002
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20171612
  CLC： K124
- Online First：05 August 2018，
  
  Published：05 August 2018
- 稿件说明：
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GU Xin, LUO Yuankun, XIONG Xiaochao, et al. Influence of twisty flow heat exchanger's structural parameters on flow field and temperature field[J]. CIESC Journal, 2018, (8): 3390-3397.
DOI：

GU Xin, LUO Yuankun, XIONG Xiaochao, et al. Influence of twisty flow heat exchanger's structural parameters on flow field and temperature field[J]. CIESC Journal, 2018, (8): 3390-3397. DOI： 10.11949/j.issn.0438-1157.20171612.

摘要

建立扭转流换热器和弓形折流板换热器两种周期性全截面模型，采用计算流体力学方法对两种换热器的传热系数、阻力、综合性能进行了数值研究。分析了扭转流换热器管束支撑物类梯形导流板结构参数对换热器传热和流阻性能的影响。结果表明：导流板倾角和相邻两组导流板间距对扭转流换热器传热性能的影响显著，导流板宽度的影响次之，每组导流板的数量的影响较小。扭转流换热器优化结构，压降较弓形折流板换热器降低42.5%~46.9%，综合性能提高7.2%~14.1%。研究结果为管壳式换热器结构优化和强化传热提供了新方案。

Abstract

Periodic whole cross-section computation models of twisty flow heat exchanger and segmental baffle heat exchanger are established respectively. The heat transfer coefficient

flow resistance and thermal performance are studied with CFD simulation. The influence of inclination angle of trapezoidal baffles

baffles width

baffles pitch and number of baffles on the heat transfer performance in the twisty flow heat exchanger was studied. The results showed that the inclination angle of trapezoidal baffles and baffles pitch have a significant effect on heat transfer performance

the effect of baffles width is secondary

and the number of baffles have no significant effect. When the thermal performance factor TEF of twisty flow heat exchanger reaches the best

compared to segmental baffle heat exchanger

the pressure drop decrease by 42.5% to 46.9%

the TEF is improved by 7.2% to 14.1%. The results of this paper provide a new scheme of the shell and tube heat exchanger for structure optimization and heat transfer enhancement.

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