Heat transfer and flow resistance characteristics of tube bundle supported by twisted-leaves

WANG Yangjun; DENG Xianhe; LI Zhiwu; HONG Mengna

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Heat transfer and flow resistance characteristics of tube bundle supported by twisted-leaves

更新时间：2025-12-10

- Heat transfer and flow resistance characteristics of tube bundle supported by twisted-leaves
- CIESC Journal Issue 1, (2007)
- 作者机构：
  
  1. 华南理工大学教育部传热强化与过程节能重点实验室
  2. 上海大学环境与化学工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 January 2007，
  
  Published：05 January 2007
- 稿件说明：
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WANG Yangjun, DENG Xianhe, LI Zhiwu, et al. Heat transfer and flow resistance characteristics of tube bundle supported by twisted-leaves[J]. CIESC Journal, 2007, (1).
DOI：

WANG Yangjun, DENG Xianhe, LI Zhiwu, et al. Heat transfer and flow resistance characteristics of tube bundle supported by twisted-leaves[J]. CIESC Journal, 2007, (1). DOI：

摘要

提出旋流网板管壳式换热器，并对空气纵向流过旋流片支撑光滑传热管束的传热与流阻性能进行了实验研究。另外比较了270-38.1、180-38.1、270-20.3、180-20.3 四种旋流片和空心环的强化传热性能。实验结果表明，270-20.3和180-20.3旋流片支撑光滑管束的强化传热评价因子η比空心环支撑的高出7％，而270-38.1、180-38.1、空心环的评价因子η相差不大。除了起到支撑管束作用外，270-20.3和180-20.3旋流片还具有良好的强化传热效果。实验结果可为对管壳式换热器的研究设计提供参考。

Abstract

A new type of shell-and-tube exchanger with twisted-leaf-net support was proposed

and the heat transfer and flow resistance characteristics in the tube bundle supported by twisted-leaves for air flow in the longitudinal direction were investigated.In addition

the heat transfer enhancement of twisted-leaf 270-38.1(a type of twisted-leaf with twist angle α=270° and swirl angle β=45°)

180-38.1

270-20.3

180-20.3 and ring support was compared with each other.The results indicated that the comprehensive evaluation factor η of heat transfer enhancement of twisted-leaves 270-20.3 and 180-20.3 was increased by about 7% against that of the ring support

while the factor η of twisted-leaves 270-38.1 and 180-38.1 was close to that of the ring support for Reynolds number (2.5×103～2.0×104).Besides supporting the tube bundle

the twisted-leaves of 270-20.3 and 180-20.3 enhanced heat transfer obviously.The results could be used as a reference in the further research and design of the shell-and-tube exchanger.

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