연료전지자동차의 고압수소저장시스템 수소 누출 안전성 평가

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 23; no. 4; pp. 316 - 322
• Main Authors: 김형기(Hyung Ki Kim), 최영민(Young Min Choi), 김상현(Sang Hyun Kim), 심지현(Ji Hyun Shim), 황인철(In Chul Hwang)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2012
• Subjects: 기계공학; 수소 누출; Hydrogen Leakage; 연료전지자동차; Fuel cell vehicle; 고압수소저장시스템; High pressure hydrogen storage system
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2012.23.4.316

A fuel cell vehicle has the hydrogen detection sensors for checking the hydrogen leakage because it use hydrogen for its fuel and can't use a odorant to protect the fuel cell stack. To verify the hydrogen safety of leakage we select the high possible leak points of fittings in hydrogen storage system and test the leaking behavior at them. The hydrogen leakage flow rate is 10, 40, 118 NL/min and the criterion for maximum hydrogen leakage is based on allowing an equivalent release of combustion energy as permitted by gasoline vehicles in FMVSS301. There are total 18EA hydrogen leakage detection sensors installed in test system. we acquire the hydrogen leakage detection time and determine the ranking. Hydrogen leakage detection time decrease when hydrogen leakage flow rate increase. The minimum hydrogen leakage detection time is about 3 seconds when the flow rate is 118NL/min. In this study, we optimize hydrogen sensor position in fuel cell vehicle and verify the hydrogen leakage safety because there is no inflow inside the vehicle.