Preparation and characterization of myristic acid/expanded graphite composite phase change materials for thermal energy storage

被引：41
作者：
Zhou, Dongyi [1 ,2 ,3 ]
Yuan, Jiawei [1 ]
Zhou, Yuhong [1 ]
Liu, Yicai [2 ]
机构：
[1] Shaoyang Univ, Sch Mech & Energy Engn, Shaoyang 422000, Peoples R China
[2] Cent South Univ, Sch Energy Sci & Engn, Changsha 410083, Peoples R China
[3] Shaoyang Univ, Key Lab Hunan Prov Efficient Power Syst & Intelli, Shaoyang 422000, Peoples R China
来源：
SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期
基金：
中国国家自然科学基金;
关键词：
HEAT-STORAGE; PERFORMANCE; PCM; SYSTEMS;
D O I：
10.1038/s41598-020-67849-y
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Myristic acid/expanded graphite (MA/EG) composite phase-change material (CPCM) was prepared by absorbing liquid MA (as the PCM) into EG (as the supporting material). Its chemical structure, microstructure, and thermal properties were characterized and studied. In the MA/EG CPCM, the largest mass content of MA was 93.5% by using the diffusion-exudation circle method for the first time. Fourier transform infrared spectroscopy (FTIR) analysis indicated that the MA and EG were a pure physical mixture of which the structure does not change, and they undergo no chemical reaction. Differential-scanning-calorimetry (DSC) analysis results showed that the melting and freezing temperatures of the MA/EG CPCM were 53.3 and 52.4 degrees C, respectively, and the melting and freezing latent heats were 189.5 and 187.8 J/g, respectively. After several heat-cycle accelerations, the material still had good thermal-energy-storage effect. MA/EG CPCM thermoconductivity was greatly enhanced after adding EG, and the results of thermal-storage/-release experiments indicated that the thermal-storage and -release ratios of the MA/EG phase-change unit was greatly improved when compared with that of MA. These results indicated that the MA/EG CPCM was a suitable low-temperature thermal-energy-storage material.
引用
收藏
页数：11
相关论文
共 40 条
[21]  
Sun J., 2004, New building materials, V7, P43, DOI [10.3969/j.issn.1001-702X.2004.07.015, DOI 10.3969/j.issn.1001-702X.2004.07.015]
[22]   Synthesis and Performances of Phase Change Materials Microcapsules with a Polymer/BN/TiO2 Hybrid Shell for Thermal Energy Storage [J].
Sun, Na ;
Xiao, Zhenggang .
ENERGY & FUELS, 2017, 31 (09) :10186-10195
[23]   Hexadecanol/phase change polyurethane composite as form-stable phase change material for thermal energy storage [J].
Tang, Bingtao ;
Wang, Lingjuan ;
Xu, Yuanji ;
Xiu, Jinghai ;
Zhang, Shufen .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2016, 144 :1-6
[24]   Synthesis and thermal properties of fatty acid eutectics and diatomite composites as shape-stabilized phase change materials with enhanced thermal conductivity [J].
Tang, Fang ;
Su, Di ;
Tang, Yaojie ;
Fang, Guiyin .
SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2015, 141 :218-224
[25]   A novel sebacic acid/expanded graphite composite phase change material for solar thermal medium-temperature applications [J].
Wang, Shuping ;
Qin, Peng ;
Fang, Xiaoming ;
Zhang, Zhengguo ;
Wang, Shuangfeng ;
Liu, Xiaohong .
SOLAR ENERGY, 2014, 99 :283-290
[26]   Preparation and performance of form-stable polyethylene glycol/silicon dioxide composites as solid-liquid phase change materials [J].
Wang, Weilong ;
Yang, Xiaoxi ;
Fang, Yutang ;
Ding, Jing .
APPLIED ENERGY, 2009, 86 (02) :170-174
[27]   Effect of preparation methods on the structure and thermal properties of stearic acid/activated montmorillonite phase change materials [J].
Wang, Yi ;
Zheng, Han ;
Feng, Hui Xia ;
Zhang, De Yi .
ENERGY AND BUILDINGS, 2012, 47 :467-473
[28]   High performance form-stable expanded graphite/stearic acid composite phase change material for modular thermal energy storage [J].
Wu, S. ;
Li, T. X. ;
Yan, T. ;
Dai, Y. J. ;
Wang, R. Z. .
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2016, 102 :733-744
[29]   Thermal conductivity enhancement on phase change materials for thermal energy storage: A review [J].
Wu, Shaofei ;
Yan, Ting ;
Kuai, Zihan ;
Pan, Weiguo .
ENERGY STORAGE MATERIALS, 2020, 25 :251-295
[30]   Development of novel composite PCM for thermal energy storage using CaCl2•6H2O with graphene oxide and SrCl2•6H2O [J].
Xu, Xiaoxiao ;
Cui, Hongzhi ;
Memon, Shazim Ali ;
Yang, Haibin ;
Tang, Waiching .
ENERGY AND BUILDINGS, 2017, 156 :163-172
1234