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Experimental investigation of pulsating heat pipe performance: Effects of working fluid, geometrical parameters and nanoparticles.

机译:脉动热管性能的实验研究:工作流体,几何参数和纳米颗粒的影响。

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摘要

Pulsating heat pipes (PHPs) have emerged as possible cooling devices for high heat flux electronics. In this study, an optimum PHP design is investigated. The PHPs were constructed of multiport extruded aluminum tubing. Several parameters were varied for this purpose: type of working fluid, the fluid fill ratio, the heat pipe orientation, and the PHP dimensions. Addition of diamond nanoparticles to the working fluid was also tested. It was found that the optimum fluid fill ratio depends on the PHP structure, with 50% and 20% being the best values for the 35-port and 26-port PHPs, respectively. Also, the 35-port design was able to dissipate a higher power input of 80W, versus 60W for the 26-port case. In the vertical orientation the PHP delivered better performance compared to the horizontal case. Acetone outperformed ethanol only at low power inputs. The nanoparticle addition slightly improved the PHP performance.
机译:脉动热管(PHP)已经成为高热通量电子设备可能的冷却装置。在这项研究中,研究了最佳的PHP设计。 PHP由多端口挤压铝管制成。为此,更改了几个参数:工作流体的类型,流体填充率,热管方向和PHP尺寸。还测试了将金刚石纳米颗粒添加到工作流体中。发现最佳流体填充率取决于PHP结构,其中35端口和26端口PHP的最佳值分别为50%和20%。同样,35端口设计能够耗散80W的较高功率输入,而26端口的情况则为60W。与水平情况相比,在垂直方向上PHP提供了更好的性能。丙酮仅在低功率输入下才能胜过乙醇。纳米颗粒的添加略微改善了PHP性能。

著录项

  • 作者

    Chiang Yi Wai.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Engineering Chemical.
  • 学位 M.A.Sc.
  • 年度 2007
  • 页码 82 p.
  • 总页数 82
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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