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首页> 外文期刊>International Journal of Heat and Mass Transfer >On fin efficiency in interrupted fin and tube heat exchangers
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On fin efficiency in interrupted fin and tube heat exchangers

机译：中断的翅片管换热器的翅片效率

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摘要

When studying compact heat exchangers, determining the heat transfer coefficient from black box measurements is complicated by the need to determine the fin efficiency. Most experimental studies use the fin efficiency correlation of Schmidt to separate the fin efficiency and the heat transfer coefficient. On the other hand, in numerical studies it is possible to determine the fin efficiency and heat transfer coefficient directly. It is known that the Schmidt correlation performs quite well for continuous fin designs. In this study, the applicability of the Schmidt correlation to complex interrupted fin designs such as the louvered fin was investigated. It is shown that the Schmidt correlation results in an overestimation of the fin efficiency. Furthermore, the fin efficiency is often estimated numerically as the ratio of the actual heat transfer rate to the heat transfer rate for an isothermal fin. An explanation as to why this common method is not correct is provided and a new method is proposed.
机译：在研究紧凑型热交换器时，由于需要确定散热片效率，因此根据黑匣子测量结果确定传热系数变得很复杂。大多数实验研究都使用Schmidt的翅片效率相关性来分离翅片效率和传热系数。另一方面，在数值研究中，可以直接确定散热片效率和传热系数。众所周知，施密特相关性在连续鳍设计中表现良好。在这项研究中，研究了Schmidt相关性对复杂的中断鳍设计（如百叶窗鳍）的适用性。结果表明，施密特相关性导致了鳍效率的高估。此外，翅片效率通常以数值表示为等温翅片的实际传热率与传热率之比。解释了为什么这种通用方法不正确，并提出了一种新方法。

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  • 作者

    Bernd Ameel; Henk Huisseune; Joris Degroote; Christophe TJoen; Peter De Jaeger; Jan Vierendeels; Michel De Paepe;

  • 作者单位

    Ghent University, Department of Flow, Heat and Combustion Mechanics, Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium;

    Ghent University, Department of Flow, Heat and Combustion Mechanics, Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium;

    Ghent University, Department of Flow, Heat and Combustion Mechanics, Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium;

    Ghent University, Department of Flow, Heat and Combustion Mechanics, Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium;

    Ghent University, Department of Flow, Heat and Combustion Mechanics, Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium ,NV Bekaert SA, Bekaertstraat 2, 8550 Zwevegem, Belgium;

    Ghent University, Department of Flow, Heat and Combustion Mechanics, Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium;

    Ghent University, Department of Flow, Heat and Combustion Mechanics, Sint-Pietersnieuwstraat 41, 9000 Gent, Belgium;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    interrupted fin; fin efficiency; CFD; heat exchanger;

    机译：鳍断;鳍效率差价合约热交换器;

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