Thermal Properties and Reliability of a Lauric Acid/Nonanoic Acid Binary Mixture as a Phase-Change Material for Thermal Energy Storage

被引：12
|
作者：
Wang, Zhao [1 ,2 ]
Sun, Jinhe [1 ]
Xie, Shaolei [1 ]
Ma, Guixiang [1 ,2 ]
Jia, Yongzhong [1 ]
机构：
[1] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
ENERGY TECHNOLOGY | 2017年 / 5卷 / 12期
基金：
中国国家自然科学基金;
关键词：
fatty acids; latent heat; phase-change materials; phase diagrams; thermal energy storage; ACID/EXPANDED PERLITE COMPOSITE; EUTECTIC MIXTURES; GRAPHITE COMPOSITE; CARBON NANOTUBE; FATTY-ACIDS; PCM; MORPHOLOGY; BUILDINGS; FIBERS;
D O I：
10.1002/ente.201700349
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：
The thermal properties of a binary system composed of lauric acid (LA) and nonanoic acid (NA) and its binary phase diagram were studied. To put this binary system into practice, the mixture containing 96wt% of LA was selected, which has a phase-change temperature of 41 degrees C and a latent heat of 163Jg(-1), which is suitable for a domestic water heating application. Additionally, its thermal and chemical structure stability, thermal conductivity, degree of supercooling, and thermal reliability were investigated by using thermogravimetric analysis, FTIR spectroscopy, thermal conductivity analysis, the T-history method, and an accelerated thermal cycle test for 1000 melt/freeze cycles, respectively. The results of these tests indicated that the mixture has a remarkable thermal stability, a good chemical structure stability, no supercooling, and an excellent thermal reliability. Therefore, the mixture can be a potential phase-change material for thermal energy storage.
引用
收藏
页码：2309 / 2316
页数：8
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