극저온 냉동기를 활용한 기체수소 예냉 시스템의 검증에 관한 연구 Part I: 실험적 연구 및 이론적 분석

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 34; no. 4; pp. 350 - 357
• Main Authors: 하동우(DONG WOO HA), 노현우(HYUN WOO NOH), 서영민(YOUNG MIN SEO), 구태형(TAE HYUNG KOO), 고락길(ROCK KIL KO)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2023
• Subjects: Cryocooler(극저온 냉동기); Flow rate(유량); Pre-cooling system(예냉 시스템); Hydrogen gas(기체수소); Cooling capacity(냉각 능력)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/JHNE.2023.34.4.350

In this study, the experimental investigation and theoretical analysis were conducted to verify the cooling capacity of the cryocooler used for pre-cooling of hydrogen gas. The effect of the flow rate on a copper pipe attached to the bottom of the cryocooler, which has a coil shape in a hydrogen line, was investigated. Temperature sensors were strategically placed at various positions on the cryocooler to analyze the temperature variations with respect to the flow rate. In this study, the thermal properties of hydrogen for the pressure and temperature were utilized using REFPROP to analyze the cooling capacity of the cryocooler. Based on the experimental results derived from this study, the cooling capacity of the cryocooler for pre-cooling hydrogen gas was considered by calculating the cooling temperature according to the flow rate through theoretical analysis.