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Effect of ZrO_2 Nanoparticle Deposited Layer on Pool Boiling Heat Transfer Enhancement

机译：ZrO_2纳米粒子沉积层对池沸腾热传递增强的影响

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摘要

Nanofluid preparation and its deposition on metallic surfaces are in wide practice due to their enhancement capability in the pool boiling heat transfer. The effect of zirconia nano-particles coated layer on pool boiling heat transfer has been investigated with de-ionized water. The turbidity, viscosity and stability test are conducted, and confirmed a better dispersion of nanoparticles. The synthesized zirconia nanofluid is deposited by nanofluid boiling nanoparticle technique at different concentrations on three copper samples. The conventional characterization techniques confirm the better structural behavior of the coating. The obtained results of non-coated copper sample fits well with Rohsenow correlation, which signifies the reliability and stability of the obtained results. Experimental results shows that sample with 200 nm coating thickness and 227 nm surface roughness improved the heat transfer coefficient by 31.52% compared to non-coated copper sample. The bubble behavior of the same has the highest velocity and lower bubble diameter compared to other at 785 kW/m~2 of heat flux. Hence by this experimentation, it is found that the effect of surface characteristics of the zirconia coated layer on the copper surface enhances the pool boiling heat transfer coefficient at the maximum coating thickness and surface roughness by the considered coating technique.
机译：由于它们在池沸腾热传递中的增强能力，纳米流体制备及其对金属表面的沉积在广泛的实践中。通过去离子水研究了氧化锆纳米颗粒涂层对池沸腾热传递的影响。进行浊度，粘度和稳定性试验，并确认纳米颗粒的更好分散。在三种铜样品上以不同浓度的纳米流体沸腾纳米颗粒技术沉积合成的氧化锆纳米流体。传统的表征技术确认涂层的较好的结构行为。未涂覆的铜样品的所得结果与RohseNow相关性很好，这意味着所得结果的可靠性和稳定性。实验结果表明，与非涂覆的铜样品相比，具有200nm涂层厚度和227nm表面粗糙度的样品将传热系数提高31.52％。与其他785kW / m〜2的热通量相​​比，相同的气泡行为具有最高的速度和更低的气泡直径。因此，通过该实验，发现氧化锆涂层在铜表面上的表面特性的影响通过所考虑的涂布技术在最大涂层厚度和表面粗糙度下增强了池沸腾的传热系数。

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  • 来源
    《Heat Transfer Engineering》 |2021年第14期|1184-1202|共19页
  • 作者

    Sameer Sheshrao Gajghate; Anuj Vikram Bandurkar; Sudev Das; Bidyut Baran Saha; Swapan Bhaumik;

  • 作者单位

    Department of Mechanical Engineering National Institute of Technology Agartala Jirania Tripura India;

    Department of Mechanical Engineering National Institute of Technology Agartala Jirania Tripura India;

    Department of Chemical Engineering National Institute of Technology Calicut Calicut Kerala India;

    International Institute for Carbon-Neutral Energy Research (WPI-I~2CNER) Kyushu University Fukuoka Japan;

    Department of Mechanical Engineering National Institute of Technology Agartala Jirania Tripura India;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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