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首页> 外文期刊>Energy Conversion & Management >Numerical investigations of using carbon foam/PCM/Nano carbon tubes composites in thermal management of electronic equipment
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Numerical investigations of using carbon foam/PCM/Nano carbon tubes composites in thermal management of electronic equipment

机译：电子设备热管理中使用泡沫碳/ PCM /纳米碳管复合材料的数值研究

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摘要

A numerical investigation of predicting thermal characteristics of electronic equipment using carbon foam matrix saturated with phase change material (PCM) and Nano carbon tubes as thermal management modules is presented. To study the effect of insertion of RT65 and Nano carbon tubes in carbon foam matrices of different porosities, three different modules; namely Pure CF-20, CF20 + RT65, and CF-20 + RT65/Nano carbon modules are numerically tested at different values of carbon foam porosities. Mathematical model is obtained using volume averaging technique based on single-domain energy equation and a control volume based numerical scheme. Interfacial effects influencing heat transfer process at enclosure wall, module surface and different interfacial surfaces within the composite have been addressed. Governing equations have been solved using a CFD code. Mathematical model is validated by comparing its prediction with previous experimental measurements for pure CF-20 foam and CF-20 + RT65 composite modules. The model is used to predict thermal characteristics of CF-20 + RT65/Nano carbon tubes composite as a thermal management modules. Results reveal that insertion of RT65/MWCNTs in CF-20 leads to a 11.5% reduction in the module surface temperature for carbon foam porosities less than 75%. The reduction decrease to 7.8% for a porosity of 88%. Numerical results of transient and steady state temperature histories at different depths within the module are compared with previous experimental data and fair agreement is obtained.
机译：提出了使用相变材料（PCM）和纳米碳管作为饱和度管理模块的碳泡沫基体预测电子设备热特性的数值研究。为了研究RT65和纳米碳管在不同孔隙度的碳泡沫基体中插入三种不同模块的效果；纯CF-20，CF20 + RT65和CF-20 + RT65 /纳米碳组件在不同的碳泡沫孔隙率值下进行了数值测试。使用基于单域能量方程的体积平均技术和基于控制体积的数值方案获得数学模型。已经解决了影响复合材料内的外壳壁，模块表面和不同界面表面的传热过程的界面效应。控制方程已使用CFD代码求解。通过将其预测与纯CF-20泡沫和CF-20 + RT65复合模块的先前实验测量值进行比较来验证数学模型。该模型用于预测作为热管理模块的CF-20 + RT65 /纳米碳管复合材料的热特性。结果表明，将RT65 / MWCNT插入CF-20可使碳泡沫孔隙率小于75％的组件表面温度降低11.5％。对于88％的孔隙率，减少率降低到7.8％。将模块内不同深度处的瞬态和稳态温度历史的数值结果与先前的实验数据进行了比较，并获得了合理的一致性。

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  • 来源
    《Energy Conversion & Management》 |2015年第1期|873-884|共12页
  • 作者

    W.G. Alshaer; S.A. Nada; M.A. Rady; Cedric Le Bot; Elena Palomo Del Barrio;

  • 作者单位

    Mechanical Engineering Department, Benha Faculty of Engineering, Benha University, Benha, P.O. 13512, Egypt;

    Mechanical Engineering Department, Benha Faculty of Engineering, Benha University, Benha, P.O. 13512, Egypt;

    Mechanical Engineering Department, Faculty of Engineering at Helwan University, Helwan, P.O. 11421, Egypt;

    Universite de Bordeaux, Laboratoire TREFLE, Esplanade des Arts et Metiers, 33405 Talence, France;

    Universite de Bordeaux, Laboratoire TREFLE, Esplanade des Arts et Metiers, 33405 Talence, France;

  • 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

    Thermal management; Electronic equipment; PCM; Nano carbon tubes;

    机译：热管理;电子设备;PCM;纳米碳管;

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