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Experimental of the Heat Transfer Coefficient of a Plate-Fin Heat Exchanger

机译：板翅式换热器的传热系数实验

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摘要

Heat transfer in compact plate-fin heat exchangers is augmented by the introduction of complex fin patterns in the channels. Kays and London presented a lot of experimental data for several types of fin configurations, and many authors followed their example with other types of fins. For some fin types, the heat transfer correlation for the Nussett number cannot be found in literature. Most of the data are given for large scale model fins in good controlled laboratory environments—little data is available for real heat exchangers. A test rig was constructed at Ghent University to verify the performance of several fin types. Measurements were done on a real heat exchanger and not on a large scale model in order to determine the performance under real operational conditions. The measurement setup consists of a hot water circuit and an air circuit with a fan. In the heat exchanger, 40 thermocouples are introduced on the air side and the wall. This way, the convection coefficient of the fins can be determined for a broad range of Reynolds numbers. In the paper the measurement set-up is discussed and the measurements are presented. An in depth error analysis is performed on the measurements. This way a heat transfer correlation is provided with a tight error margin for compact plate-fin air coolers.
机译：紧凑的板翅式换热器中的热传递通过在通道中引入复杂的翅片图案而得以增强。凯斯和伦敦提供了有关几种类型的鳍片配置的大量实验数据，许多作者沿用了其他类型的鳍片的示例。对于某些散热片类型，Nussett数的传热相关性在文献中找不到。大部分数据是在可控的实验室环境中针对大型模型翅片提供的，而对于实际的热交换器而言则仅有少量数据。根特大学建造了一个测试台，以验证几种鳍片的性能。为了确定实际运行条件下的性能，在真实的热交换器上而不是在大型模型上进行测量。测量设置包括热水回路和带风扇的空气回路。在热交换器中，在空气侧和壁上引入了40个热电偶。这样，可以针对大范围的雷诺数确定鳍的对流系数。在本文中，讨论了测量设置并提出了测量。对测量结果进行深度误差分析。这样，对于紧凑的板翅式空气冷却器，传热相关性具有很小的误差范围。

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  • 来源
    《Heat Transfer Engineering》 |2005年第7期|p.29-35|共7页
  • 作者

    MICHEL DE PAEPE; AN WILLEMS; ALEXIS ZENNER;

  • 作者单位

    Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, B9000 UGent, Ghent, Belgium;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工业用热工设备;
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