倾斜椭圆管束热交换器的热性能研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-04-22 DOI:10.2514/1.t6941

Lahcene Bellahcene, A. Yousfi, Djamel Sahel, Abdelghani Laouer, Souici Mohammed, Müslüm Arıcı, Mohamed Teggar

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引用次数: 0

摘要

提高热交换器的被动性能具有成本效益，对于提高热系统的能效和可持续性至关重要。本文研究了一种由倾斜椭圆管束组成的紧凑型热交换器。针对两种管束排列方式，即直列式和交错式，研究了几何参数对热交换器热性能的影响。这些参数包括纵向（SL/a = 3 至 6）和横向（ST/a = 2.5 至 5.5）间距比。模拟传热和流体流动使用的是 CFD 商业代码。计算的雷诺数范围为 Re = 300-1500。结果表明，与直列倾斜管相比，交错布置的性能更高。在 Re = 1500 时，SL/a = 6、ST/a = 5.5 的交错配置具有最佳热性能。此外，还提供了倾斜椭圆管热交换器努塞尔特数的相关数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Investigation of Thermal Performance of Heat Exchangers of Inclined-Elliptic-Tube Bundle

Passive performance improvement of heat exchangers is cost-effective and crucial for energy efficiency as well as sustainability of thermal systems. In this paper, an investigation is presented on a compact configuration of heat exchanger composed of a bundle of inclined elliptical tubes. The effect of geometrical parameters on the thermal performance of the heat exchanger is investigated for two tube arrangements i.e. inline and staggered configurations. These parameters include longitudinal (SL/a = 3 to 6) and transversal (ST/a = 2.5 to 5.5) pitch ratios. A CFD commercial code is used for simulation of heat transfer and fluid flow. Computations are performed for the Reynolds number range Re = 300-1500. The outcomes indicate higher performance of the staggered arrangement when compared with the inline inclined tubes. The best thermal performance is observed for a staggered configuration with SL/a = 6, ST/a = 5.5 at Re = 1500. Furthermore, correlations are provided for Nusselt number for heat exchangers of inclined elliptic tubes.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.