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首页> 外文期刊>International Journal of Heat and Mass Transfer >Summary and evaluation on single-phase heat transfer enhancement techniques of liquid laminar and turbulent pipe flow
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Summary and evaluation on single-phase heat transfer enhancement techniques of liquid laminar and turbulent pipe flow

机译：液层流与湍流管流单相传热强化技术综述与评价

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摘要

A comprehensive literature survey on the thermal-hydraulic performance of liquid flow and heat transfer in pipes with internal integral-fins, twisted tape inserts, corrugations, dimples, and compound enhancement techniques is conducted in this paper. The results of recent published papers with the developments of each technology are also included. It is found that for turbulent heat transfer the enhancement ratio of experimental Nusselt number over Dittus-Boelter equation for internal integral-finned tube is generally in the range of 2-4; twisted tape insert is 1.5-6; corrugated tube is 1.5-4 and dimpled tube is 1.5-4, including the compound enhancement techniques. The ratio of experimental friction factor over Fanning equation is mostly in the range of 1-4 for tubes with internal integral-fins, 2-13 for inserted twisted tape, 2-6 for corrugated tube and 3-5 for dimpled tube. The internally-finned tubes yield the best thermal-hydraulic performance compared with the other three types of tube, whose heat transfer rate augmentation over plain tube is more than the increase of friction factor at the same flow rate. For most of the corrugated and dimpled tubes, the heat transfer enhancement ratios are larger than the increment of pressure drop penalties. For the twisted tape inserts, the pressure drop is remarkably increased at the turbulent flow, and most of data have lower efficiency than the other three types of tube, while it is found to be effective in laminar and transition flow and higher viscosity fluid.
机译：本文对具有内部整体翅片，扭曲的带状插入物，波纹，凹痕和复合增强技术的管道中液体流动和传热的热工液压性能进行了全面的文献调查。还包括了随着每种技术的发展而发表的最新论文的结果。研究发现，对于湍流传热，内部整体翅片管的实验努塞尔数相对于Dittus-Boelter方程的增强率一般在2-4范围内。扭曲的胶带插入物为1.5-6；波纹管为1.5-4，波纹管为1.5-4，包括复合增强技术。对于带有内部整体翅片的管，实验摩擦系数与Fanning方程的比值通常在1-4的范围内，对于插入的扭曲带，该系数为2-13，对于波纹管，为2-6，对于波纹管为3-5。与其他三种类型的管相比，内部翅片管具有最佳的热工液压性能，在相同流速下，其在普通管上的传热速率增加大于摩擦系数的增加。对于大多数波纹管和波纹管，传热增强比大于压降损失的增量。对于扭曲的带状插入件，在湍流处压降显着增加，并且大多数数据的效率低于其他三种类型的管，而发现它对层流和过渡流以及较高粘度的流体有效。

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  • 作者

    Wen-Tao Ji; Anthony M. Jacobi; Ya-Ling He; Wen-Quan Tao;

  • 作者单位

    Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, China,Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA;

    Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA;

    Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, China;

    Key Laboratory of Thermo-Fluid Science and Engineering of MOE, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an, China;

  • 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

    Turbulent convection; Heat transfer enhancement; Pipe flow; Performance evaluation;

    机译：湍流对流;传热增强;管道流量绩效评估;

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