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Article

Explosion Characteristics of Hydrogen Gas in Varying Ship Ventilation Tunnel Geometries: An Experimental Study

1
The Korea Ship and Offshore Research Institute, Pusan National University, Busan 46241, Korea
2
Department of Naval Architecture and Ocean Engineering, Pusan National University, Busan 46241, Korea
*
Author to whom correspondence should be addressed.
Academic Editors: Peilin Zhou and Byongug Jeong
J. Mar. Sci. Eng. 2022, 10(4), 532; https://doi.org/10.3390/jmse10040532
Received: 4 March 2022 / Revised: 3 April 2022 / Accepted: 7 April 2022 / Published: 12 April 2022
(This article belongs to the Special Issue Marine Alternative Fuels and Environmental Protection II)
Hydrogen is widely regarded as a key element of prospective energy solutions for alleviating environmental emission problems. However, hydrogen is classified as a high-risk gas because of its wide explosive range, high overpressure, low ignition energy, and fast flame propagation speed compared with those of hydrocarbon-based gases. In addition, deflagration can develop into detonation in ventilation or explosion guide tunnels if explosion overpressure occurs, leading to the explosion of all combustible gases. However, quantitative evidence of an increase in the explosion overpressure of ventilation tunnels is unavailable because the explosive characteristics of hydrogen gas are insufficiently understood. Therefore, this study investigated an explosion chamber with the shape of a ventilation pipe in a ship compartment. The effect of tunnel length on explosion overpressure was examined experimentally. For quantitative verification, the size of the hydrogen gas explosion overpressure was analyzed and compared with experimental values of hydrocarbon-based combustible gases (butane and LPG (propane 98%)). The experimental database can be used for explosion risk analyses of ships when designing ventilation holes and piping systems and developing new safety guidelines for hydrogen carriers and hydrogen-fueled ships. View Full-Text
Keywords: hydrogen gas; explosion load profile; ventilation tunnels; overpressure; ratio of length; risk analysis hydrogen gas; explosion load profile; ventilation tunnels; overpressure; ratio of length; risk analysis
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MDPI and ACS Style

Park, S.W.; Kim, J.H.; Seo, J.K. Explosion Characteristics of Hydrogen Gas in Varying Ship Ventilation Tunnel Geometries: An Experimental Study. J. Mar. Sci. Eng. 2022, 10, 532. https://doi.org/10.3390/jmse10040532

AMA Style

Park SW, Kim JH, Seo JK. Explosion Characteristics of Hydrogen Gas in Varying Ship Ventilation Tunnel Geometries: An Experimental Study. Journal of Marine Science and Engineering. 2022; 10(4):532. https://doi.org/10.3390/jmse10040532

Chicago/Turabian Style

Park, Soung Woo, Jeong Hwan Kim, and Jung Kwan Seo. 2022. "Explosion Characteristics of Hydrogen Gas in Varying Ship Ventilation Tunnel Geometries: An Experimental Study" Journal of Marine Science and Engineering 10, no. 4: 532. https://doi.org/10.3390/jmse10040532

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