Preparation and properties of stearic acid/expanded graphite composite phase change material for low-temperature solar thermal application

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• 作者：Haitao Yu ; Jianmin Gao ; Yao Chen ; Yang Zhao
• 关键词：Thermal energy storage ; Phase change material ; Expanded graphite ; Stearic acid
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：124
• 期：1
• 页码：87-92
• 全文大小：1,272 KB
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• 作者单位：Haitao Yu (1)
  Jianmin Gao (1)
  Yao Chen (1)
  Yang Zhao (1)
  
  1. MOE Key Laboratory of Wooden Material Science and Application, Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing, 100083, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Sciences
  Polymer Sciences
  Physical Chemistry
  Inorganic Chemistry
  Measurement Science and Instrumentation
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1572-8943

文摘

Stearic acid (SA)/expanded graphite (EG) composite phase change material (PCM) was prepared through physical adsorption of SA to EG with mass ratios of SA varying from 6:1 to 11:1. The prepared composite PCM was characterized using scanning electron microscopy images, X-ray diffraction analysis, differential scanning calorimetry, and thermogravimetric analysis. A latent thermal energy storage system was used to measure the thermal cycling performance of the prepared composite PCM. The results show that when the composite PCM was prepared with 90 % SA, a high latent heat value and good thermal stability were achieved. Additionally, the heat transfer efficiency of both heat storage and heat retrieval was improved by the addition of EG.