Form-stable paraffin/graphene aerogel/copper foam composite phase change material for solar energy conversion and storage

被引：88
|
作者：
Zheng, Xiangjun [1 ,2 ]
Gao, Xuenong [1 ,2 ]
Huang, Zhaowen [3 ]
Li, Zhongping [1 ,2 ]
Fang, Yutang [1 ,2 ]
Zhang, Zhengguo [1 ,2 ]
机构：
[1] South China Univ Technol, Sch Chem & Chem Engn, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Guangzhou 510640, Peoples R China
[2] South China Univ Technol, Guangdong Engn Technol Res Ctr Efficent Heat Stor, Guangzhou 510640, Peoples R China
[3] Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R China
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2021年 / 226卷 / 226期
基金：
中国国家自然科学基金;
关键词：
High thermal conductivity; Light-to-thermal energy conversion; Solar energy storage; Paraffin; graphene aerogel; copper foam composite PCM; THERMAL MANAGEMENT; GRAPHITE COMPOSITE; GRAPHENE AEROGEL; N-OCTADECANE; PARAFFIN; CONDUCTIVITY; BEHAVIOR; OXIDE; PCMS; MPCM;
D O I：
10.1016/j.solmat.2021.111083
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Sustainable utilization of solar energy with a more compact solar heating system is a significant research. In this study, a novel form-stable composite phase change material (PCM) was prepared for application in solar energy conversion and storage. Paraffin as PCM was encapsulated in the matrix consist of copper foam (CF) loaded with graphene aerogel (GA) in order to improve thermal conductivity, prevent leakage and convert solar energy to thermal energy. The melting temperature and the latent heat of the composite PCMs were determined to estimate thermal storage performance. The thermal conductivities of composite PCMs measured by transient plane heat source method were more than 9 times higher than that of paraffin. Besides, the composite PCMs showed uniform temperature distribution and perfect shape-stabilization when heated. Furthermore, the composite PCMs exhibited an excellent light-to-thermal energy conversion efficiency (up to 97%) in the experiment of light-tothermal energy conversion, which demonstrated the potential of the composite PCM for solar energy conversion and storage.
引用
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页数：8
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