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
Source PublicationJOURNAL OF RENEWABLE AND SUSTAINABLE ENERGY
ISSN1941-7012
Volume12Issue:2
AbstractWe 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.
DOI10.1063/1.5134103
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51562023] ; Guangdong Provincial Key Laboratory of Emergency Test for Dangerous Chemicals[KF2018001]
WOS Research AreaScience & Technology - Other Topics ; Energy & Fuels
WOS SubjectGreen & Sustainable Science & Technology ; Energy & Fuels
WOS IDWOS:000520490100001
PublisherAMER INST PHYSICS
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64320
Collection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
Corresponding AuthorWang, Yi
Affiliation1.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
First Author AffilicationColl Petrochem Engn;  State Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Corresponding Author AffilicationColl Petrochem Engn;  State Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
First Signature AffilicationColl Petrochem Engn
Recommended Citation
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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