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小管径铝开缝翅片管换热器性能评价

IF 3.8 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-09-23 DOI:10.1016/j.ijrefrig.2025.09.026

Fang Wang , JiCheng Li , ChaoWen Deng , XianFei Liu , Jun Zhang , Ye Tian , Hong Liu , Senqing Zhuo , Wei Guo

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引用次数: 0

摘要

本文研究了铝翅片管换热器翅片结构不同几何参数对换热器空气侧传热和阻力特性的影响。铝具有良好的延展性、导电性和导热性，经济成本较低，且纵切翅片结构能有效提高换热器的整体换热性能。本文对铝开缝翅片管换热器翅片结构中重要结构参数（包括基管外径do、翅片厚度δf、狭缝高度Sh、狭缝宽度Sw和狭缝长度SL）对其空气侧换热和流动阻力特性的影响进行了数值研究。确定推荐的参数组合，并对实验数据进行拟合，推导出一个简化的数学模型来表示复杂的数据集。结果表明：Sh对开缝翅片管换热器整体换热性能的影响最为显著，SL和Sw的影响不太明显，基本可以忽略不计。改进后得到了较好的参数组合：do=5.6 mm, δf=0.115 mm, Sh=0.6 mm, Sw=1.1 mm, SL1=9.0 mm, SL2=6.6 mm。研究结果对小管径铝翅片管换热器的结构和性能改进具有重要的指导意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Performance assessment of aluminum slitted finned tube heat exchangers with small tube diameters

This paper investigates the effects of different geometric parameters for the fin structure of an aluminum slitted finned tube heat exchanger on the heat transfer and resistance characteristics on the air side of the heat exchanger. Aluminum offers good ductility, electrical conductivity, and thermal conductivity at low economic cost, and the slitted fin structure is effective in improving the overall heat transfer performance of the heat exchanger. This study presents a numerical investigation of the effects of important structural parameters (including the base tube outer diameter

d_{o}

, the fin thickness

δ_{f}

, the slit height

S_{h}

, the slit width

S_{w}

, and the slit length

S_{L}

) in the aluminum slitted finned tube heat exchanger’s fin structure on its air-side heat transfer and flow resistance characteristics. Recommended parameter combinations were identified and the experimental data were fitted to derive a simplified mathematical model to represent the complex dataset. The results show that

S_{h}

has the most significant effect on the overall heat transfer performance of the slitted finned tube heat exchanger, while the effects of

S_{L}

and

S_{w}

are less obvious and are basically negligible. The favorable parameters combinations were obtained after improvement as follows:

d_{o}

=5.6 mm,

δ_{f}

=0.115 mm,

S_{h}

=0.6 mm,

S_{w}

=1.1 mm,

S_{L 1}

=9.0 mm, and

S_{L 2}

=6.6 mm. The results of this study will be highly significant in guiding improvement of the structure and the performance of aluminum slitted finned tube heat exchangers with small tube diameters.

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来源期刊

International Journal of Refrigeration-revue Internationale Du Froid 工程技术-工程：机械

CiteScore

7.30

自引率

12.80%

发文量

363

审稿时长

3.7 months

期刊介绍： The International Journal of Refrigeration is published for the International Institute of Refrigeration (IIR) by Elsevier. It is essential reading for all those wishing to keep abreast of research and industrial news in refrigeration, air conditioning and associated fields. This is particularly important in these times of rapid introduction of alternative refrigerants and the emergence of new technology. The journal has published special issues on alternative refrigerants and novel topics in the field of boiling, condensation, heat pumps, food refrigeration, carbon dioxide, ammonia, hydrocarbons, magnetic refrigeration at room temperature, sorptive cooling, phase change materials and slurries, ejector technology, compressors, and solar cooling. As well as original research papers the International Journal of Refrigeration also includes review articles, papers presented at IIR conferences, short reports and letters describing preliminary results and experimental details, and letters to the Editor on recent areas of discussion and controversy. Other features include forthcoming events, conference reports and book reviews. Papers are published in either English or French with the IIR news section in both languages.