LAPSE:2023.6857
Published Article
LAPSE:2023.6857
Study on the Performance of Variable Density Multilayer Insulation in Liquid Hydrogen Temperature Region
Kecen Li, Jie Chen, Xueqin Tian, Yujing He
February 24, 2023
The storage of hydrogen is important for the development of hydrogen energy, especially for the storage of liquid hydrogen, which has been receiving more and more attention recently. In order to study the thermal insulation performance of variable-density multilayer insulation (VDMLI) structures under different working conditions at liquid hydrogen temperatures without incorporating a composite structure, we established a heat transfer model based on a layer-by-layer calculation method. Then, we carried out numerical calculations to analyze the influence of the total number of layers, the thermal boundary temperature, and vacuums on the performance of MLI at liquid hydrogen temperatures. To investigate the optimization of variable-density configurations on the thermal insulation performance of VDMLI and to obtain accurate variable-density configurations, we proposed a variable-density configuration method based on the control variable method and the insertion by region method. The results indicate that the optimal variable-density configuration is the insertion of 4 layers of radiation shields in the low-density region, 15 layers in the medium-density region and 38 layers in the high-density region. Compared with a uniform-density structure, the heat flux is reduced by 8.6%.
Keywords
heat flux, layer density, liquid hydrogen temperature region, multilayer insulation, variable density
Suggested Citation
Li K, Chen J, Tian X, He Y. Study on the Performance of Variable Density Multilayer Insulation in Liquid Hydrogen Temperature Region. (2023). LAPSE:2023.6857
Author Affiliations
Li K: School of Electrical Engineering, Xinjiang University, Urumqi 830049, China
Chen J: School of Electrical Engineering, Xinjiang University, Urumqi 830049, China
Tian X: State Grid Economic and Technological Research Institute Co., Ltd., Beijing 102209, China
He Y: School of Electrical Engineering, Xinjiang University, Urumqi 830049, China
Journal Name
Energies
Volume
15
Issue
24
First Page
9267
Year
2022
Publication Date
2022-12-07
Published Version
ISSN
1996-1073
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PII: en15249267, Publication Type: Journal Article
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doi:10.3390/en15249267
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