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首页> 外文期刊>Energy and Buildings >Thermophysical properties of n-tetradecane@polystyrene-silica composite nanoencapsulated phase change material slurry for cold energy storage
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Thermophysical properties of n-tetradecane@polystyrene-silica composite nanoencapsulated phase change material slurry for cold energy storage

机译：正十四烷@聚苯乙烯-二氧化硅复合纳米封装相变材料浆料的热物理性质

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摘要

Based on the synthesis of n-tetradecane@polystyrene-silica (Tet@PS-SiO2) composite nanoencapsulated phase change material (NEPCM), a novel composite NEPCM slurry for cold energy storage was prepared by dispersing NEPCM into base fluid. The thermal performances of the Tet@PS-SiO2 NEPCM were measured by differential scanning calorimetry (DSC) and thermogravimetric analyzer (TG). The thermophysical properties of the NEPCM slurry including morphology, particle size, specific heat capacity, thermal conductivity, viscosity and mechanical stability were investigated systematically. The results showed that the Tet@PS-SiO2 NEPCM had a melting latent heat of 83.38 kJ kg(-1) and excellent thermal stability. Transmission electron microscope (TEM) images displayed that the synthesized nanocapsules had regular spherical core-shell structure, and particle size analysis of NEPCM dispersed in slurry showed the mean particle size of Tet@PS-SiO2 NEPCM was 151.3 nm. Moreover, the Tet@PS-SiO2 slurry had a high specific heat capacity and obtained an enhancement 8.4% in thermal conductivity by the grafting of SiO2 on the PS shell. In addition, the slurry showed an acceptable viscosity and excellent mechanical stability. Those results indicate the Tet@PS-SiO2 slurry can be considered as an up-and coming latent heat fluid for cold energy storage. (C) 2016 Elsevier B.V. All rights reserved.
机译：以正十四烷@聚苯乙烯-二氧化硅（Tet @ PS-SiO2）复合纳米封装相变材料（NEPCM）为基础，通过将NEPCM分散到基液中制备了一种新型的用于储能的复合NEPCM浆料。 Tet @ PS-SiO2 NEPCM的热性能通过差示扫描量热法（DSC）和热重分析仪（TG）进行测量。系统研究了NEPCM浆料的热物理性质，包括形貌，粒度，比热容，导热系数，粘度和机械稳定性。结果表明，Tet @ PS-SiO2 NEPCM的熔融潜热为83.38 kJ kg（-1），并且具有出色的热稳定性。透射电子显微镜（TEM）图像显示合成的纳米胶囊具有规则的球形核-壳结构，并且对分散在浆料中的NEPCM进行粒度分析表明，Tet @ PS-SiO2 NEPCM的平均粒度为151.3nm。而且，Tet @ PS-SiO 2浆料具有高的比热容，并且通过将SiO 2接枝到PS壳上而获得了8.4％的导热率的提高。另外，该浆料显示出可接受的粘度和优异的机械稳定性。这些结果表明，Tet @ PS-SiO2浆料可被视为一种新兴的潜热流体，用于冷能存储。 （C）2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Energy and Buildings》 |2017年第2期|26-32|共7页
  • 作者

    Fu Wanwan; Liang Xianghui; Xie Hongzhou; Wang Shuangfeng; Gao Xuenong; Zhang Zhengguo; Fang Yutang;

  • 作者单位

    South China Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China;

    South China Univ Technol, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Guangdong, Peoples R China;

  • 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

    Polystyrene-silica composite shell; Nanoencapsulated phase change material Slurry; Thermal conductivity; Cold energy storage; Latent heat fluid;

    机译：聚苯乙烯-二氧化硅复合壳;纳米胶囊相变材料;浆料;导热系数;冷能储存;潜热流体;

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