Lanzhou University of Technology Institutional Repository (LUT_IR)
Effect of encapsulation and additives doping on the thermophysical properties of erythritol for thermal energy storage | |
Wang, Yi1,2; Qin, Ziyi1; Zhang, Ting1; Zhang, Zhengfei1; Li, Yong1 | |
2020-03 | |
发表期刊 | JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY |
ISSN | 1941-7012 |
卷号 | 12期号:2 |
摘要 | We wished to improve the thermophysical properties and thermal stability of meso-erythritol (ET) for storage of thermal energy. Hence, capsules containing ET with polysiloxane (pSiO) shells were fabricated using ultraviolet-assisted in situ polymerization, and the effects of encapsulation and additives doping on the thermophysical properties of ET were studied. Differential scanning calorimetry showed that the heat-release performance of the composite (pSiO-C-A@ET) upon addition of 3.0 wt. % carboxymethylcellulose (CMC) and 9.0 wt. % nano-alpha-Al2O3 increased significantly from 64.1% to 89.0%, and the supercooling degree decreased dramatically from 89.5 degrees C to 17.0 degrees C, compared with that of pure ET. Spectroscopy (Fourier transform-infrared, x-ray diffraction) implied no change in the crystal structure of ET after encapsulation by pSiO shells. Addition of a nucleation agent (nano-alpha-Al2O3) and thickening agent (CMC) had no effect on the crystal structure of pSiO-C-A@ET. The thermal conductivity of pSiO@ET and pSiO-C-A@ET capsules increased by 6.2% and 20.0% compared with that of pure ET (0.65 W/m center dot K) at 25 degrees C, respectively. The thermal conductivity was enhanced noticeably by doping with nano-alpha-Al2O3. Results from accelerated thermal cycling suggested that pSiO@ET and pSiO-C-A@ET capsules exhibited good thermal stability and thermal durability. These data suggest that composite phase-change materials could be employed for applications involving storage of thermal energy. |
关键词 | Alumina Aluminum oxide Crystal structure Differential scanning calorimetry Digital storage Doping (additives) Heat storage Phase change materials Silicon Silicones Storage (materials) Thermal energy Thermodynamic stability Accelerated thermal cycling Carboxymethylcellulose Composite phase change materials Effect of encapsulation Fourier transform infra reds In-situ polymerization Supercooling degrees Ultraviolet-assisted |
DOI | 10.1063/1.5134103 |
收录类别 | SCI ; SCIE ; EI |
语种 | 英语 |
资助项目 | National Natural Science Foundation of China[51562023] ; Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals[KF2018001] |
WOS研究方向 | Science & Technology - Other Topics ; Energy & Fuels |
WOS类目 | Green & Sustainable Science & Technology ; Energy & Fuels |
WOS记录号 | WOS:000520490100001 |
出版者 | AMER INST PHYSICS |
EI入藏号 | 20201208324010 |
EI主题词 | Thermal conductivity |
EI分类号 | 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 641.1 Thermodynamics - 694.4 Storage - 722.1 Data Storage, Equipment and Techniques - 804.2 Inorganic Compounds - 815.1.1 Organic Polymers - 933.1.1 Crystal Lattice - 944.6 Temperature Measurements |
来源库 | WOS |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/64320 |
专题 | 省部共建有色金属先进加工与再利用国家重点实验室 石油化工学院 |
通讯作者 | Wang, Yi |
作者单位 | 1.Lanzhou Univ Technol, Coll Petrochem Technol, Lanzhou 730050, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China |
第一作者单位 | 石油化工学院; 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者单位 | 石油化工学院; 省部共建有色金属先进加工与再利用国家重点实验室 |
第一作者的第一单位 | 石油化工学院 |
推荐引用方式 GB/T 7714 | Wang, Yi,Qin, Ziyi,Zhang, Ting,et al. Effect of encapsulation and additives doping on the thermophysical properties of erythritol for thermal energy storage[J]. JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY,2020,12(2). |
APA | Wang, Yi,Qin, Ziyi,Zhang, Ting,Zhang, Zhengfei,&Li, Yong.(2020).Effect of encapsulation and additives doping on the thermophysical properties of erythritol for thermal energy storage.JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY,12(2). |
MLA | Wang, Yi,et al."Effect of encapsulation and additives doping on the thermophysical properties of erythritol for thermal energy storage".JOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY 12.2(2020). |
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