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首页> 外文期刊>Heat Transfer Engineering >Pool Boiling of Water-Al_2O_3 and Water-Cu Nanofluids Outside Porous Coated Tubes
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Pool Boiling of Water-Al_2O_3 and Water-Cu Nanofluids Outside Porous Coated Tubes

机译：多孔涂层管外的水-Al_2O_3和水-铜纳米流体的池沸腾

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摘要

This paper deals with pool boiling ofwater-Al_2O_3 and water-Cu nanofluids on porous coated, horizontal tubes. Commercially available stainless-steel tubes having 10 mm outside diameter and 0.6 mm wall thickness were used to fabricate a test heater. Aluminum porous coatings 0.15 mm thick with porosity of about 40% were produced by plasma spraying. A smooth tube served as a reference tube. The experiments were conducted under different absolute operating pressures of 200 kPa, 100 kPa, and 10 kPa. Nanoparticles were tested at concentrations of 0.01%, 0.1%, and 1% by weight. In all cases tested, enhancement heat transfer was always observed during boiling ofwater-Al_2O_3 and water-Cu nanofluids on smooth tubes compared to boiling of distilled water. Contrary to smooth tubes, addition of even a small amount of nanoparticles resulted in deterioration of heat transfer during pool boiling of water-Al_2O_3 and water-Cu nanofluids on porous coated tubes in comparison with boiling of distilled water.
机译：本文研究了多孔涂层水平管上的水-Al_2O_3和水-铜纳米流体的池沸腾。使用市售的外径为10 mm，壁厚为0.6 mm的不锈钢管来制造测试加热器。通过等离子喷涂产生0.15mm厚的铝多孔涂层，其孔隙率为约40％。光滑管用作参考管。在200 kPa，100 kPa和10 kPa的不同绝对工作压力下进行实验。以0.01重量％，0.1重量％和1重量％的浓度测试纳米颗粒。在所有测试的情况下，与蒸馏水的沸腾相比，在光滑管上的水-Al_2O_3和水-铜纳米流体沸腾期间始终观察到增强的传热。与光滑管相反，与蒸馏水的沸腾相比，即使少量的纳米颗粒的添加也导致水-Al_2O_3和水-铜纳米流体在多孔涂层管上的池沸腾过程中的传热恶化。

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  • 来源
    《Heat Transfer Engineering》 |2015年第8期|553-563|共11页
  • 作者

    JANUSZ T. CIESLINSKI; TOMASZ Z. KACZMARCZYK;

  • 作者单位

    Faculty of Mechanical Engineering, Gdansk University of Technology, 11/12 Narutowicza, 80-233, Gdansk, Poland;

    Faculty of Mechanical Engineering, Gdansk University of Technology, Gdansk, Poland;

  • 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);
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  • 正文语种 eng
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