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首页> 外文期刊>Energy Conversion & Management >Stearic-capric acid eutectic/activated-attapulgiate composite as form-stable phase change material for thermal energy storage
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Stearic-capric acid eutectic/activated-attapulgiate composite as form-stable phase change material for thermal energy storage

机译：硬脂酸共晶/活化附着物复合材料，作为形状稳定的相变材料，用于热能存储

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摘要

The aim of this research was to prepare a novel form-stable PCMs (FSPCM) for latent heat thermal energy storage (LHTES) in low temperature, by incorporating eutectic mixture of stearic-capric acid (S-C) into activated-attapulgite (a-ATP) which acted as supporting material in the composite. The a-ATP is open-ended tubular capillary with large specific surface area, which is beneficial for the adsorption of PCMs. The maximum mass fraction of stearic-capric binary fatty acid loaded in a-ATP is determined as high as 50 wt% without melted S-C seepage from the composite. The phase change temperatures and latent heats of FSPCM are measured to be 21.8 ℃ and 72.6 J/g for melting process, and 20.3 ℃ and 71.9 J/g for freezing process, respectively, indicating it has suitable phase change temperature and high latent heat storage capacity. Moreover, the S-C/a-ATP FSPCM shows good thermal and chemical reliability after 1000 times thermal cycling test, which is identified by differential scanning calorimetry (DSC) and Fourier transformation infrared (FTIR). Therefore, the S-C/a-ATP FSPCM is an effective LHTES building material to reduce energy consumption.
机译：这项研究的目的是通过将硬脂酸（SC）的共晶混合物掺入活化的凹凸棒石（a-ATP）中，制备用于低温潜热热能储存（LHTES）的新型形状稳定PCM（FSPCM） ）作为复合材料的支撑材料。 a-ATP是具有大比表面积的开放式管状毛细管，有利于PCM的吸附。负载在α-ATP中的硬脂酸-癸酸二元脂肪酸的最大质量分数被确定为高达50 wt％，而复合材料中没有熔融的S-C渗漏。 FSPCM的相变温度和潜热在熔融过程中测得分别为21.8℃和72.6 J / g，在冷冻过程中分别为20.3℃和71.9 J / g，这表明它具有合适的相变温度和较高的潜热存储容量。此外，S-C / a-ATP FSPCM经过1000次热循环测试后显示出良好的热和化学可靠性，这通过差示扫描量热法（DSC）和傅立叶变换红外光谱（FTIR）得以确定。因此，S-C / a-ATP FSPCM是降低能耗的有效LHTES建筑材料。

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  • 来源
    《Energy Conversion & Management》 |2014年第5期|306-311|共6页
  • 作者

    Shaokun Song; Lijie Dong; Shun Chen; Haian Xie; Chuanxi Xiong;

  • 作者单位

    State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China;

    State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China;

    State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China;

    State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China;

    State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, PR China,School of Materials Science and Engineering, Wuhan Textile University, Wuhan 430073, PR 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

    Fatty acid; Eutectic; Form-stable PCM; Attapulgiate; Thermal reliability;

    机译：脂肪酸;共晶;形状稳定的PCM;轻描淡写热可靠性;

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