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Jet impingement and spray cooling using slurry of nanoencapsulated phase change materials

机译:使用纳米封装相变材料的浆料进行喷射撞击和喷雾冷却

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摘要

Polymer encapsulated nano phase change materials (paraffin) in particulate form (nano PCM) are added in water to enhance the heat transfer performance of jet impingement and spray cooling. The nano PCM particles absorb heat when paraffin changes from solid to liquid phase. The encapsulation prevents paraffin leakage and agglomeration. The volume fraction of nanoparticles plays an important role on pressure drop and heat transfer. Slurry with 28% particle volume fraction enhances heat transfer coefficient by 50% and 70% when compared to base solution for jet impingement and spray cooling, respectively. The structural integrity of shell encapsulation has been demonstrated by repeated use in a closed loop.
机译:将颗粒形式(纳米PCM)的聚合物封装的纳米相变材料(石蜡)添加到水中,以增强射流冲击和喷雾冷却的传热性能。当石蜡从固相变为液相时,纳米PCM颗粒会吸收热量。该包封防止石蜡泄漏和附聚。纳米颗粒的体积分数对压降和热传递起重要作用。与用于喷射冲击和喷雾冷却的基础溶液相比,颗粒体积分数为28%的浆液的传热系数分别提高了50%和70%。壳密封的结构完整性已通过在闭环中重复使用得到证明。

著录项

  • 来源
    《International Journal of Heat and Mass Transfer》 |2011年第14期|p.2715-2723|共9页
  • 作者单位

    Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816-2450, USA;

    Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816-2450, USA;

    Department of Mechanical, Materials and Aerospace Engineering, University of Central Florida, Orlando, FL 32816-2450, USA;

    NanoSdence Technology Center, University of Central Florida, Orlando, FL 32816, USA;

    NanoSdence Technology Center, University of Central Florida, Orlando, FL 32816, USA;

    NanoSdence Technology Center, University of Central Florida, Orlando, FL 32816, USA;

    Department of Mechanical Engineering, North Carolina Agricultural and Technological State University, Greensboro, NC 27411, USA;

    Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, USA;

    Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, OH 45433, 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

    polymer encapsulated paraffin nanoparticle jet impingement spray cooling;

    机译:聚合物包封石蜡纳米粒子射流冲击喷雾冷却。;

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