Evaluating the effectiveness of double-shell vacuum insulation for liquefied hydrogen storage systems

IF 8.1 2区工程技术 Q1 CHEMISTRY, PHYSICAL

International Journal of Hydrogen Energy Pub Date : 2025-06-05 DOI:10.1016/j.ijhydene.2025.06.039

Seung-Joo Cha , Byeong-Kwan Hwang , Hee-Tae Kim , Gyung-Hun Lee , Jong-Pil Lee , Jeong-Hyeon Kim , Jae-Myung Lee

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Abstract

A fundamental challenge in liquefied hydrogen (LH₂) storage tank design is the selection of advanced insulation materials that effectively minimize heat ingress in extreme vacuum environments. This study presents a pioneering structural-scale experimental system designed to rigorously assess the insulating performance of LH₂ storage systems. Subsequently, comprehensive vacuum evacuation experiments were conducted under air, nitrogen, and heated nitrogen conditions. The results from the present experimental system demonstrated that nitrogen accelerated soft vacuum formation by 50 %, while heated nitrogen significantly enhanced high-vacuum formation. The most effective approach integrated room-temperature nitrogen for rapid soft vacuum formation and heated nitrogen for achieving superior high vacuum conditions. Additionally, we obtained remarkable improvements of 48 % in low vacuum and 30 % in high vacuum for the multilayered insulation (MLI). To further optimize vacuum conditions, this study addresses challenges related to vacuum leakage and moisture absorption, proposing nitrogen purging and heat treatment techniques to enhance insulation reliability. The established structural-scale evaluation framework provides a robust foundation for the development of next-generation high-performance insulation systems, driving transformative advancements in hydrogen storage technologies.

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液态氢储存系统双壳真空绝热的有效性评价

液化氢（LH2）储罐设计的一个基本挑战是选择先进的绝缘材料，有效地减少极端真空环境下的热量进入。本研究提出了一个开创性的结构尺度实验系统，旨在严格评估LH2存储系统的绝缘性能。随后，在空气、氮气和加热氮气条件下进行了全面的真空抽放实验。实验结果表明，氮气可使软真空的形成加速50%，而加热后的氮气可显著促进高真空的形成。最有效的方法是将快速软真空形成的室温氮气和获得优越高真空条件的加热氮气结合起来。此外，在低真空和高真空条件下，多层隔热材料的性能分别提高了48%和30%。为了进一步优化真空条件，本研究解决了与真空泄漏和吸湿有关的挑战，提出了氮净化和热处理技术来提高绝缘可靠性。已建立的结构规模评估框架为下一代高性能绝缘系统的开发提供了坚实的基础，推动了储氢技术的变革性进步。

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来源期刊

International Journal of Hydrogen Energy 工程技术-环境科学

CiteScore

13.50

自引率

25.00%

发文量

3502

审稿时长

60 days

期刊介绍： The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.