분자 간 상호작용 기반 상변화 모델을 이용한 액체수소 저장용기의 증발가스 발생 평가

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 36; no. 1; pp. 31 - 41
• Main Authors: 황해성, 이현섭, 한승호, HAESEONG HWANG, HYUNSEOP LEE, SEUNGHO HAN
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 01.02.2025
• Subjects: 기계공학
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/JHNE.2025.36.1.31

The boiling point of liquid hydrogen is extremely low at 20 K, making it prone to generate boil-off gas (BOG). BOG can lead to a rise in pressure and a potential rupture of liquid hydrogen storage vessels, prompting research on estimating BOG generation using numerical analysis and phase change models. Commonly used models require empirical parameters obtained through trial and error. In this study, a multi-phase fluid flow analysis was conducted on a liquid hydrogen storage vessel to propose a phase change model that does not rely on the empirical parameters. The phase change model based on the intermolecular interactions provided the BOG generation rate of 0.23 kg/day.