반밀폐공간 내 점화원의 위치가 수소-공기 혼합물 벤트폭연에 미치는 영향

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 35; no. 4; pp. 415 - 427
• Main Authors: 윤웅기(UNGGI YOON), 박병직(BYOUNGJIK PARK), 황인주(INJU HWANG), 김우경(WOOKYUNG KIM), 김양균(YANGKYUNG KIM)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2024
• Subjects: 기계공학; Human damage(인적 피해); Overpressure(순간 과압); Vented deflagration(통풍구폭연); Ignition location(점화 위치); Hydrogen(수소)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/JHNE.2024.35.4.415

Explosion experiments were conducted using a rectangular concrete structure filled with hydrogen-air mixture (29.0%). In addition, the effect of ignition location on explosion was investigated. The impact on overpressure and flame was increased with the increasing distance of the ignition source from the vent. Importantly, depending on the ignition location the incident pressure was up to 24.4 times higher, while the reflected pressure was 8.7 times higher. Additionally, a maximum external overpressure of 30.01 kPa was measured at a distance of 2.4 m from the vent, predicting damage to humans at the injury level (1% fatality probability). Whereas, no significant damage would occur at a distance of 7.4 m or more from the vent.