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Mathematical Model for Predicting the Heat Transfer Characteristics of a Helical-Coiled, Crimped, Spiral, Finned-Tube Heat Exchanger

机译：用于预测螺旋盘绕，卷曲，螺旋，翅片管式换热器的传热特性的数学模型

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摘要

This paper is a continuation of the authors' previous work. Theoretical and experimental studies of the heat transfer characteristics of a helical-coiled, crimped, spiral, finned-tube heat exchanger in dry surface conditions are presented. The test section is a helical-coiled, finned-tube heat exchanger. The coil unit is composed of four concentric helical-coiled tubes of different diameters. All tubes are constructed by bending straight copper tube into seven layers of helical coil. Aluminum crimped spiral fins, with an outer diameter of 28.25 mm and a thickness of 0.5 mm, are connected around the tube. Hot water is used as a working fluid for the tube side, while ambient air is used for the shell side. The test runs are done at air mass flow rates ranging between 0.04 and 0.13 kg/s. The water mass flow rates are between 0.2 and 0.4 kg/s. The water temperatures are between 40 and 50℃. A mathematical model is developed and the simulation results show reasonable agreement with the experimental data.
机译：本文是作者先前工作的延续。提出了螺旋盘绕，卷曲，螺旋，翅片管式换热器在干燥表面条件下的传热特性的理论和实验研究。测试部分是螺旋盘绕的翅片管热交换器。线圈单元由四个直径不同的同心螺旋管组成。通过将直铜管弯曲成七层螺旋线圈来构造所有管。铝制卷曲螺旋翅片的外径为28.25毫米，厚度为0.5毫米，围绕着管子连接。热水用作管侧的工作流体，而环境空气用作壳侧。测试运行在空气质量流量介于0.04和0.13 kg / s之间的情况下进行。水的质量流量在0.2到0.4 kg / s之间。水温在40至50℃之间。建立了数学模型，仿真结果与实验数据吻合良好。

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  • 来源
    《Heat Transfer Engineering》 |2015年第18期|1495-1503|共9页
  • 作者

    ROUMSAK BOONSRI; SOMCHAI WONGWISES;

  • 作者单位

    Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok, Thailand;

    Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, 126 Pracha-utid Road, Bangmod, Bangkok 10140, Thailand;

  • 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
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