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Experimental Investigation on Heat Transfer Performance of a Flat Plate Heat Pipe With MWCNTS-Acetone Nanofluid

机译：MWCNTS-丙酮纳米流体平板热管传热性能的实验研究

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摘要

This paper experimentally investigates how different mass concentration and aspect ratio multiwall carbon nanotubes (MWCNTs) acetone nanofluid affects the heat transfer performance of a flat plate heat pipe (FPHP). Different mass concentration and aspect ratio MWCNTs-acetone nanofluids are prepared without any surfactants or additives using the two-step method. Aspect ratios of MWCNTs are 666 (Ml) and 200 (M2), respectively, and their according mass concentrations are 0.002, 0.005, 0.01, and 0.015 wt. %, respectively. The thermal resistance and wall temperature of the FPHP are experimentally obtained when the above-mentioned nanofluids are used as working fluid. The results showed that different mass concentration affects the heat transfer performance, therefore, there is an optimal MWCNTs-acetone nanofluid mass concentration (about 0.005wt. %). Also, the results showed that the thermal resistances of the FPHP with Ml-acetone nanofluid (0.005 wt. %) and M2-acetone nanofluid (0.005 wt. %) are reduced 40% and 16%, respectively. Based on the above experimental phenomenon, this paper discusses the reasons for enhancement and decrement of heat transfer performance of the different mass concentration. For the Ml-acetone nanofluid, the investigated FPHP has a thermal resistance of 0.26 °C/W and effective thermal conductivity 3212 W/m kat a heat input of 160 W. For the M2-acetone nanofluid, the investigated FPHP has a thermal resistance of 0.33 °C/W and effective thermal conductivity 2556 W/m k at a heat input of 150 W. The nanofluid FPHP investigated here provides a new approach in designing a high efficient next generation heat pipe cooling devices.
机译：本文实验研究了不同质量浓度和纵横比的多壁碳纳米管（MWCNT）丙酮纳米流体如何影响平板热管（FPHP）的传热性能。使用两步法制备了不同质量浓度和长宽比的MWCNTs-丙酮纳米流体，而没有任何表面活性剂或添加剂。 MWCNT的长宽比分别为666（M1）和200（M2），并且它们的相应质量浓度为0.002、0.005、0.01和0.015wt。％。 ％， 分别。当将上述纳米流体用作工作流体时，通过实验获得了FPHP的热阻和壁温。结果表明，不同的质量浓度会影响传热性能，因此，有一个最佳的MWCNTs-丙酮纳米流体质量浓度（约0.005wt。％）。而且，结果表明，具有M1-丙酮纳米流体（0.005wt。％）和M2-丙酮纳米流体（0.005wt。％）的FPHP的热阻分别降低了40％和16％。基于以上实验现象，本文讨论了不同质量浓度下传热性能提高和降低的原因。对于M1-丙酮纳米流体，所研究的FPHP具有0.26°C / W的热阻，有效热导率为3212 W / m kat，输入热量为160W。对于M2-丙酮纳米流体，所研究的FPHP具有的热阻在输入功率为150 W时的热效率为0.33°C / W，有效导热率为2556 W / mk。这里研究的纳米流体FPHP为设计高效的下一代热管冷却设备提供了一种新方法。

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  • 来源
    《Journal of Heat Transfer》 |2017年第6期|062001.1-062001.8|共8页
  • 作者

    Xiaohong Hao; Bei Peng; Yi Chen; Gongnan Xie;

  • 作者单位

    School of Mechatronlcs, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China;

    State Key Laboratory for Manufacturing Systems Engineering, Xi'an 710054, Shaanxi, China;

    School of Mechatronics, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China;

    Center for Robotics, University of Electronic Science and Technology of China, Chengdu 611731, Sichuan, China;

    School of Engineering and Built Environment, Glasgow Caledonian University, Glasgow G4 OBA, UK;

    Department of Mechanical and Power Engineering, School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, 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

    heat pipe; MWCNTs; mass concentration; aspect ratio; thermal resistance;

    机译：热管;碳纳米管;质量浓度;长宽比;热阻;

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