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首页> 外文期刊>Journal of Heat Transfer >Fluid Flow and Heat Transfer Characteristics of Microencapsulated Phase Change Material Slurry in Turbulent Flow
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Fluid Flow and Heat Transfer Characteristics of Microencapsulated Phase Change Material Slurry in Turbulent Flow

机译：微胶囊相变材料浆液在湍流中的流动和传热特性

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摘要

Microencapsulated phase change material (MPCM) slurry is consisted of a base fluid in which MPCM is dispersed. Due to apparent high heat capacity associated with phase change process, MPCM slurry can be used as a viable heat transfer fluid (HTF)for turbulent flow conditions. Heat transfer and fluid flow properties of the slurry in turbulent flow (3000 ＜Re＜ 6000) were determined experimentally. Dynamic viscosity of the MPCM slurry was measured at different temperatures close to the melting point of the material (20-30℃). Pressure drop measurements under turbulent flow conditions were recorded for 6 MPCM samples at various concentrations. The pressure drop of the MPCM slurry was comparable to that of water despite the higher viscosity of the slurry. The effect of heat flux, MPCM mass concentration, flow rate and the type of phase change material was investigated. The effective heat capacity of slurry at the location where phase change occurs was found to be considerably higher than that of water. A nondi-mensional Nusselt number correlation was proposed in order to facilitate design of heat transfer loops with MPCM slurries as working fluid.
机译：微囊化相变材料（MPCM）浆液由分散有MPCM的基础流体组成。由于相变过程具有明显的高热容量，因此MPCM浆料可用作湍流条件下的可行传热流体（HTF）。通过实验确定了湍流（3000 ＜Re ＜6000）中浆液的传热和流体流动特性。在接近材料熔点（20-30℃）的不同温度下测量MPCM浆料的动态粘度。记录了不同浓度的6个MPCM样品在湍流条件下的压降测量结果。尽管浆料的粘度较高，但MPCM浆料的压降与水相当。研究了热通量，MPCM质量浓度，流速和相变材料类型的影响。发现在发生相变的位置处的浆料的有效热容量明显高于水的有效热容量。为了简化以MPCM浆液为工作流体的传热环路的设计，提出了非维数Nusselt数相关性。

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  • 来源
    《Journal of Heat Transfer》 |2014年第6期|061704.1-061704.7|共7页
  • 作者

    Hessam Taherian; Jorge L. Alvarado; Kalpana Tumuluri; Curt Thies; Chan-Hyun Park;

  • 作者单位

    Department of Mechanical Engineering, University of Alabama at Birmingham, 1720 2nd Avenue S, Birmingham, AL 35294;

    Department of Engineering Technology and Industrial Distribution, Texas A&M University, 3367 TAMU, College Station, TX 77843;

    Department of Engineering Technology and Industrial Distribution, Texas A&M University, 3367 TAMU, College Station, TX 77843;

    Thies Technology Inc., 921 American Pacific Dr. Suite 309, Henderson, NV 89014;

    Department of Engineering Technology and Industrial Distribution, Texas A&M University, 3367 TAMU, College Station, TX 77843;

  • 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

    microencapsulated phase change material; turbulent flow; pressure drop; constant heat flux;

    机译：微囊相变材料;湍流;压力下降;恒定热通量;

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