Effect of ratio of desulfurization gypsum to carbide slag on low-carbon phase change composites for energy storage

被引:2
作者
Xiong, Yaxuan [1 ]
Li, Shuo [1 ]
Ren, Jing [2 ]
Zhang, Aitonglu [1 ]
Xu, Qian [3 ]
Wu, Yuting [4 ]
Zhao, Yanqi [5 ]
Ding, Yulong [6 ]
机构
[1] Beijing Univ Civil Engn & Architecture, Beijing Key Lab Heating Gas Supply Ventilating & A, Beijing 100044, Peoples R China
[2] Beijing Bldg Res Inst CO LTD CSCEC, Beijing 100076, Peoples R China
[3] Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing 100083, Peoples R China
[4] Beijing Univ Technol, Coll Environm & Energy Engn, Key Lab Enhanced Heat Transfer & Energy Conservat, Minist Educ, Beijing 100124, Peoples R China
[5] Nanjing Tech Univ, Sch Energy Sci & Engn, Nanjing 211816, Jiangsu, Peoples R China
[6] Univ Birmingham, Birmingham Ctr Energy Storage, Birmingham B15 2TT, England
基金
中国国家自然科学基金;
关键词
Solid waste; Phase -change composite; Thermal property; Mechanical property; Chemical compatibility; Carbon emission; GRAPHITE COMPOSITE; THERMAL-PROPERTIES; PCM; PREVENTION; ACID; ASH; CAO;
D O I
10.1016/j.est.2024.112086
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
To recycle industrial wastes sufficiently, this work innovatively proposed a mixture of desulfurization gypsum and carbide slag as skeleton material to fabricate phase-change composites with NaNO3 as phase change material in a mass ratio of 5 to 5. Four phase-change composites were fabricated with different ratio of desulfurization gypsum to carbide slag by the cold compression-hot sintering method, and then key thermal and mechanical properties, microscopic morphology and chemical compatibility between components were investigated in detail. Results show that the mixture of desulfurization gypsum and carbide slag as skeleton material is feasible and reliable and an optimal mass ratio of desulfurization gypsum to carbide slag was obtained to be 3.5 to 1.5; the phase-change composite with the optimal mass ratio possesses good mechanical strength of up to 134.116 MPa and an energy storage capacity of 483.151 J/g in the range of 100 to 400 degrees C, as well as excellent thermal stability and chemical compatibility between components, inside which the NaNO3 is well encapsulated. Moreover, the phase-change composites fabricated in this work have far low energy consumption and carbon dioxide emission.
引用
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页数:14
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