A novel composite Phase change material of Stearic Acid/Carbonized sunflower straw for thermal energy storage

被引：84
作者：
Wen, Ruilong [1 ,2 ]
Zhang, Weiyi [1 ]
Lv, Zhenfei [1 ]
Huang, Zhaohui [1 ]
Gao, Wei [2 ]
机构：
[1] China Univ Geosci Beijing, Sch Mat Sci & Technol, Natl Lab Mineral Mat, Beijing Key Lab Mat Utilizat Nonmetall Minerals &, Beijing 100083, Peoples R China
[2] Univ Auckland, Dept Chem & Mat Engn, Auckland, New Zealand
来源：
MATERIALS LETTERS | 2018年 / 215卷
关键词：
Stearic acid; Carbonized sunflower straw; Form-stable CPCM; Thermal energy storage; Thermal conductivities; PCM; PERLITE;
D O I：
10.1016/j.matlet.2017.12.008
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this research, a novel form-stable composite Phase change material (PCM) of Stearic Acid (SA)/Carbonized sunflower straw (CSS) was prepared by vacuum impregnation method. Fourier Transform Infrared Spectroscopy (FT-IR) was used to measure the chemical compatibility of SA/CSS. The thermal properties and thermal stability were investigated by differential scanning calorimetry (DSC) and ther-mogravimetry analysis (TGA) techniques. The results show that the SA/CSS melted at 66.4 degrees C with the latent heat of 186.1 J/g and freezed at 65.9 degrees C with the latent heat of 186.7 J/g and the composite PCM have a good thermal reliability above its working temperature. Moreover, the thermal conductivity of SA/CSS was 0.33 W/m/K which was 106.3% higher than that of SA. All results indicated that SA/CSS have suitable thermal properties used as thermal energy storage applications such as solar heat energy storage system and energy conservation buildings. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：42 / 45
页数：4
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