利用膨胀石墨改进十二水磷酸氢二钠复合相变材料的蓄热性能

doi:10.11896/cldb.19060188

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Abstract The composite phase change energy storage material was prepared by adding porous expanded graphite and sodium metasilicate nonahydrate to disodium hydrogen phosphate dodecahydrate (DHPD). The effects of expanded graphite on the properties of DHPD were studied by using scanning electron microscope,temperature inspector, differential scanning calorimeter etc. The experimental results showed that when 4% expanded graphite was added, the supercooling degree of DHPD decreased from 14.3℃ to 5.9℃, the phase separation could be eliminated and the thermal conductivity of composite phase change materials could be greatly enhanced when 6% expanded graphite was added. The optimal formula of compound phase change energy storage material was 6%EG+4%Na₂SiO₃·9H₂O＋90%Na₂HPO₄·12H₂O, the latent heat of the phase-change material was 220.6 J/g,the phase transition temperature was 33.6℃, the thermal conductivity was 2.42 W/(m·K), and the supercooling degree was 1.5℃. Compared with pure DHPD, the supercooling degree decreased by 89.5%, and the thermal conductivity increased by 3.4 times.After 300 cycles of cooling and heating, the thermal performance of the composite material such as latent heat of phase change, thermal conductivity, and supercooling is stable and good.

Key words： phase change disodium hydrogen phosphate dodecahydrate expanded graphite supercooling heat storage

Published: 12 September 2020

CLC number:

TK02

Fund:This work was financially supported by the National Natural Science Foundation of China (51364015).

About author:: Peixiang Wang,School of Architectural and Surveying & Mapping Engineering,Jiangxi University of Science and Technology, heating, gas supply, ventilation and air conditioning engineering, focusing on the research of materials for energy efficient buildings.
Xiujuan Feng,professor, graduated from Huazhong University of Science and Technology in 2011 and obtained a Ph.D. in civil engineering. From 2011 to 2013, she was engaged in postdoctoral research in the Department of Chemistry and Engineering of Tsinghua University. Her main research direction is energy conservation and environmental protection.

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	WANG Peixiang
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Cite this article:

WANG Peixiang,FENG Xiujuan,ZHU Yichun, et al. Improvement of Heat Storage Performance of Disodium Hydrogen Phosphate Dodecahydrate Composite Phase Change Materials with Expanded Graphite[J]. Materials Reports, 2020, 34(18): 18044-18048.

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http://www.mater-rep.com/EN/10.11896/cldb.19060188 OR http://www.mater-rep.com/EN/Y2020/V34/I18/18044

1 Kan Rongqiang, Li Longjian, Cui Wenzhi, et al. Journal of Chongqing University of Technology (Natural Science), 2019, 33 (11),68(in Chinese).
阚荣强,李隆键,崔文智,等.重庆理工大学学报(自然科学),2019,33(11),168.
2 Yuan Y P, Zhang N, Tao W Q, et al. Renewable and Sustainable Energy Reviews,2014,29(7),482.
3 Sharma A, Tyagi V V, Chen C R, et al. Renewable & Sustainable Energy Reviews, 2009, 13(2),318.
4 Fu Yibo, Wang Dongmei, Zhu Hong. Materials Reports,2016,30(s2),222(in Chinese).
傅一波, 王冬梅, 朱宏. 材料导报, 2016,30(专辑28),222.
5 Nikolić R, Kelić K, Nešković O. Applied Physics A, 1984, 34(3),199.
6 Hirano S, Saitoh T S, Oya M,et al. Journal of Thermophysics & Heat Transfer, 2001, 15(3),340.
7 Miyasaka E, Takai M, Hidaka H, et al. Ultrasonics Sonochemistry, 2006, 13(4),308.
8 Rao Z H, Xu T T, Liu C Z, et al. Solar Energy Materials and Solar Cells, 2018, 188,6.
9 Tang Z W,Zhao H T,Cheng Z F. Journal of Beijing University of Techno-logy,2009, 35(6),809(in Chinese).
唐志伟, 赵化涛, 陈志锋. 北京工业大学学报, 2009,35(6),809.
10 Zhu P P,Huang J. Journal of Guangdong University of Technology,2014, 31(2),128(in Chinese).
祝盼盼, 黄金. 广东工业大学学报, 2014, 31(2),128.
11 Zhang X L,Sheng Q Q,Ge Y Q. Chemical Engineering,2009,3(5),53(in Chinese).
章学来, 盛青青, 葛轶群. 化学工程, 2009, 37(5),53.
12 Yan Y,Lin X H,Zhang H P. Journal of Chemical Engineering of Chinese Universities,2011,25(6),1068(in Chinese).
鄢瑛, 林小花, 张会平. 高校化学工程学报, 2011, 25(6),1068.
13 Chen Yue, Ji Jun, Xu Xiaofeng,et al. Chemical Industry and Enginee-ring Progress, 2018,37(7),285(in Chinese).
陈跃, 纪珺, 徐笑锋, 等.化工进展, 2018,37(7),285.
14 Huang Xue,Cui Yingde,Yin Guoqiang,et al. Materials Reports B: Research Papers,2017,31(7),52(in Chinese).
黄雪, 崔英德, 尹国强, 等. 材料导报:研究篇, 2017,31(7),52.
15 Tian H, Wang W, Jing D, et al. Applied Energy, 2015, 148,87.
16 Zhang Yinping, Hu Hanping, Kong Xiangdong, et al. Phase change sto-rage theory and application, University of Science and Technology of China Press, China, 1996(in Chinese).
张寅平, 胡汉平, 孔祥东, 等. 相变贮能——理论和应用. 中国科学技术大学出版社, 1996.