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Experimental study of heat transfer enhancement due to the surface vibrations in a flexible double pipe heat exchanger

机译：挠性双管换热器中由于表面振动而增强传热的实验研究

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摘要

Abstract In this study, the heat transfer enhancement due to the surface vibration for a double pipe heat exchanger, made of PVDF, is investigated. In order to create forced vibrations (3–9 m/s_(2), 100 Hz) on the outer surface of the heat exchanger electro-dynamic vibrators are used. Experiments were performed at inner Reynolds numbers ranging from 2533 to 9960. The effects of volume flow rate and temperature on heat transfer performance are evaluated. Results demonstrated that heat transfer coefficient increases by increasing vibration level and mass flow rate. The most increase in heat transfer coefficient is 97% which is obtained for the highest vibration level (9 m/s_(2)) in the experiment range.
机译：摘要本文研究了由PVDF制成的双管式换热器由于表面振动引起的传热增强。为了在热交换器的外表面上产生强制振动（3–9 m / s_（2），100 Hz），使用了电动振动器。实验在2533至9960的内部雷诺数下进行。评估了体积流量和温度对传热性能的影响。结果表明，传热系数随振动水平和质量流量的增加而增加。传热系数的最大增加是97％，这是在实验范围内的最高振动水平（9 m / s_（2））下获得的。

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  • 来源
    《Heat and mass transfer》 |2018年第4期|1113-1120|共8页
  • 作者

    A. Hosseinian; A. H. Meghdadi Isfahani;

  • 作者单位

    Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University,Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University;

    Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University,Modern Manufacturing Technologies Research Center, Najafabad Branch, Islamic Azad University;

  • 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
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