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首页> 外文期刊>International Journal of Heat and Mass Transfer >Performance improvements of microchannel heat sink using wavy channel and nanofluids
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Performance improvements of microchannel heat sink using wavy channel and nanofluids

机译：使用波浪通道和纳米流体改善微通道散热器的性能

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摘要

To improve the heat transfer performances of microchannel heat sink (MCHS), the advanced channel structures and working fluids can be applied. In this paper, the wavy channel structure and application of nanofluids are investigated. The effects of wavy amplitude, wavelength, volumetric flow rate and volume fraction of different type of nanofluids are presented. Three wave amplitudes of 25 μm, 50 μm and 75 μm with two wavelength of 250 μm and 500 μm at volumetric flow rate ranges from 0.152 L/min to 0.354 L/min are considered. Three different types of nanofluids with volume concentration ranges from 1% to 5% are applied. The effect of wavy MCHS is shown on thermal resistance, pressure drop, friction factor. It is found that in case of the pure water is applied as the coolant the heat transfer performance of the MCHS is significantly improved comparing with the traditional straight channel MCHS, while the replacement of the pure water by nanofluids makes the effect of wavy wall unnoticeable.
机译：为了提高微通道散热器（MCHS）的传热性能，可以使用先进的通道结构和工作流体。本文研究了纳米流体的波浪通道结构及其应用。给出了不同类型的纳米流体的波幅，波长，体积流速和体积分数的影响。考虑体积流量在0.152 L / min至0.354 L / min范围内的三个波长分别为25μm，50μm和75μm，两个波长分别为250μm和500μm的情况。应用了三种不同类型的纳米流体，其体积浓度范围为1％至5％。示出了波浪状MCHS对热阻，压降，摩擦系数的影响。发现在使用纯水作为冷却剂的情况下，与传统的直通道MCHS相比，MCHS的传热性能得到了显着改善，而用纳米流体代替纯水使得波浪形壁的效果不明显。

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  • 作者

    Assel Sakanova; Chan Chun Keian; Jiyun Zhao;

  • 作者单位

    EXQUISITUS, CENTRE FOR E-City, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore;

    EXQUISITUS, CENTRE FOR E-City, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore;

    Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong;

  • 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

    CFD; Micro-channel heat sink; Wavy channel; Nanofluids; Heat transfer improvement;

    机译：差价合约微通道散热器;波浪通道;纳米流体;传热改善;

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