Study on the evacuation of gas in bulk-fill insulation materials used in large-scale LH2 storage tanks

被引：1

作者：

Mata, Clara ^{[1
]}

Hunter, Rob ^{[1
]}

Peterson, Andrew ^{[1
]}

Mortensen, Matt ^{[1
]}

机构：

[1] SM Co, St Paul, MN 55075 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2025年 / 97卷

关键词：

LH2 storage tank; LH2 boil-off reduction; Cryo-insulation; Bulk-fill insulation materials; Hollow glass microspheres; Pump-down time; Effective thermal conductivity; Glass Bubbles; HYDROGEN STORAGE; LIQUID-HYDROGEN; ENERGY-STORAGE; CHALLENGES;

D O I：

10.1016/j.ijhydene.2024.11.434

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Large-scale hydrogen storage is crucial for advancing liquid hydrogen technology. Due to liquid hydrogen's ultralow boiling point and low heat of vaporization, effective insulation is necessary to minimize boil-off loss. Larger storage vessels use bulk-fill insulation like perlite and hollow glass microspheres (glass bubbles) operating at moderate vacuum (MV) levels. The choice of insulation material affects the construction schedule, capital cost, and operating costs of storage tanks. Therefore, studying evacuation properties of bulk-fill insulation materials is essential to advance hydrogen-based energy infrastructure. This study aimed to quantify and compare the pumpdown times for 3MTM Glass Bubbles K1 and cryo-insulation grade perlite and to identify physical properties influencing pump-down times. Perlite, with its porous structure and low bulk density, was expected to enable faster gas evacuation, while glass bubbles were thought to hinder it. However, our research shows that dry 3MTM Glass Bubbles K1 have faster nitrogen evacuation rates.

引用

页码：1498 / 1506

页数：9