극저온 냉동기를 활용한 기체 수소 예냉 시스템 검증에 관한 연구 Part Ⅱ: CFD 시뮬레이션

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 34; no. 5; pp. 439 - 446
• Main Authors: 서영민(YOUNG MIN SEO), 노현우(HYUN WOO NOH), 하동우(DONG WOO HA), 구태형(TAE HYUNG KOO), 고락길(ROCK KIL KO)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2023
• Subjects: Cryocooler(극저온 냉동기); Flow rate(유량); Hydrogen gas(수소 가스); CFD(전산유체역학); Cooling capacity(냉각 능력)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/JHNE.2023.34.5.439

In this study, the computational fluid dynamics (CFD) simulations were conducted to verify the cooling capacity of the cryocooler used for pre-cooling of hydrogen gas. Based on the experimental results, the effect of the flow rate on a copper pipe attached to the bottom of the cryocooler was investigated. In this study, the temperature data was calculated through the change of boundary condition for heat flux in the copper pipe. In addition, the cooling capacity of the cryocooler for pre-cooling hydrogen gas was considered by calculating the cooling temperature according to the flow rate in the certified operating range. Consequently the pre-cooing system for hydrogen gas was validated with a reasonable accuracy through CFD simulations.