Experimental Study on Heat Transfer and Flow Characteristics of Mini-Channel Shell and Tube Heat Exchangers with Honeycomb Modular Structure

WANG Zhaoyuan; TAN Sicong; JIANG Yuyan; GUO Cong; ZHAO Jianzhong

doi:10.7652/xjtuxb202505008

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Experimental Study on Heat Transfer and Flow Characteristics of Mini-Channel Shell and Tube Heat Exchangers with Honeycomb Modular Structure

更新时间：2025-08-26

- Experimental Study on Heat Transfer and Flow Characteristics of Mini-Channel Shell and Tube Heat Exchangers with Honeycomb Modular Structure
- Journal of Xi’an Jiaotong University Vol. 59, Issue 5, Pages: 75-86(2025)
- 作者机构：
  
  1.北京理工大学机械与车辆学院， 100081，北京
  2.青岛国能永泰智能装备有限公司， 266100，山东青岛
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202505008
  CLC： TK172
- Received：22 November 2024，
  
  Online First：06 January 2025，
  
  Published：10 May 2025
- 稿件说明：
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WANG Zhaoyuan, TAN Sicong, JIANG Yuyan, et al. Experimental Study on Heat Transfer and Flow Characteristics of Mini-Channel Shell and Tube Heat Exchangers with Honeycomb Modular Structure[J]. Journal of Xi’an Jiaotong University, 2025, 59(5): 75-86.
DOI：

WANG Zhaoyuan, TAN Sicong, JIANG Yuyan, et al. Experimental Study on Heat Transfer and Flow Characteristics of Mini-Channel Shell and Tube Heat Exchangers with Honeycomb Modular Structure[J]. Journal of Xi’an Jiaotong University, 2025, 59(5): 75-86. DOI： 10.7652/xjtuxb202505008.

摘要

针对毛细管换热器插管困难以及毛细管弯曲强度低等问题导致功率受限、难以批量化制造，提出了一种应用仿蜂窝状结构设计的组装式毛细管换热器设计方案，通过芯体模块的标准化发挥其固有的低成本、高紧凑度、高换热系数等优势。换热器样件采用外径为3 mm、内径为2 mm的316L不锈钢毛细管，换热面紧凑度达到1 073 m

，壳体紧凑度达到234.6 m

，高于同类型普通毛细管换热器。在搭建的水-水换热实验测试台上，壳程雷诺数在200~1 400范围内时，测量了换热器的换热与流阻特性。实验结果表明：毛细管换热器的壳程换热系数是常规管壳式换热器的5倍，模块之间的挡管对壳程换热性能具有重要作用，可防止模块间隙流体旁通；通过对内部结构的仿真与优化分析，有效降低了壳程流阻，壳程管束摩擦因子低于同类型普通毛细管换热器。

Abstract

As the power output of the mini-channel shell and tube heat exchanger is limited and the mass production is challenging because of difficulty in tube inserting and low tube bending strength

a honeycomb-inspired assembled heat exchanger design was proposed. By standardizing the core module

this design features low cost

high compactness

and superior heat transfer coefficients. The heat exchanger prototype used 316L stainless steel mini-channel tubes with an outer diameter of 3 mm and an inner diameter of 2 mm.

The surface compactness of the exchanger was 1 073 m

and the shell-side compactness was 234.6 m

higher than those of conventional mini-channel shell and tube heat exchangers. A water-to-water heat exchange test bench was set up with a shell-side Reynolds number range of 200—1 400 to test the heat transfer and flow resistance characteristics. As revealed by the experiment

the shell-side heat transfer coefficient of the mini-channel shell and tube heat exchanger with honeycomb modular structure is five times that of conventional shell and tube heat exchangers. The blocking tubes between the modules play a crucial role in enhancing shell-side heat transfer performance by preventing fluid bypassing between the modules. Through simulation and optimization of the internal structure

the shell-side flow resistance was effectively reduced

and the friction factor of the shell-side tube bundle of the mini-channel shell and tube heat exchanger is lower than that of conventional mini-channel shell and tube heat exchangers.

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Keywords

references

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