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Nanocoating characterization in pool boiling heat transfer of pure water

机译:纯水池沸腾传热中的纳米涂层表征

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摘要

The pool boiling behavior of nanoparticle coated surfaces is experimentally studied in pure water. Nano-particle coatings were created during nanofluid pool boiling experiments (Al_2O_3-water/ethanol). The nanocoatings developed can significantly enhance the critical heat flux. Ethanol nanofluids created more uniform nanocoatings which outperformed nanocoatings created in water nanofluids. The wetting and wicking characteristics of the nanocoatings are investigated through contact angle measurements and by conducting a dip test. A linear relationship between the CHF enhancement and the quasi-static contact angles of the nanocoatings was revealed. Additionally, a mechanism potentially responsible for nanocoating CHF enhancement is identified.
机译:在纯水中对纳米颗粒涂层表面的池沸腾行为进行了实验研究。在纳米流体池沸腾实验(Al_2O_3-水/乙醇)中创建了纳米颗粒涂层。所开发的纳米涂层可以显着提高临界热通量。乙醇纳米流体可产生更均匀的纳米涂层,其性能优于水纳米流体中产生的纳米涂层。通过接触角测量和浸入试验研究了纳米涂层的润湿和芯吸特性。揭示了CHF增强和纳米涂层的准静态接触角之间的线性关系。另外,鉴定了潜在负责纳米涂层CHF增强的机制。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2010年第22期|p.4579-4587|共9页
  • 作者单位

    Mechanical and Aerospace Engineering Department, The University of Texas at Arlington, 500 W. First Street, Arlington, TX 76019, USA;

    rnMechanical and Aerospace Engineering Department, The University of Texas at Arlington, 500 W. First Street, Arlington, TX 76019, USA;

    rnMechanical and Aerospace Engineering Department, The University of Texas at Arlington, 500 W. First Street, Arlington, TX 76019, USA;

    rnMechanical and Aerospace Engineering Department, The University of Texas at Arlington, 500 W. First Street, Arlington, TX 76019, USA;

    rnMechanical and Aerospace Engineering Department, The University of Texas at Arlington, 500 W. First Street, Arlington, TX 76019, USA;

  • 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

    nanocoating; wettability; critical heat flux; boiling heat transfer;

    机译:纳米涂层润湿性临界热通量;沸腾传热;

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