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http://dx.doi.org/10.9711/KTAJ.2021.23.6.439

A numerical analysis study on the flammable volume by leakage of hydrogen fuel vehicles in parking lot  

Lee, Ho-Hyung (JS G&B Inc.)
Kim, Hyo-Gyu (JS G&B Inc.)
Yoo, Ji-Oh (Dept. of Mechanical and Automotive Engineering, Shin-Han University)
Kim, Doo-Young (Korea Institute of Civil Engineering and Building Technology)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.23, no.6, 2021 , pp. 439-449 More about this Journal
Abstract
The recent reduction in greenhouse gases, interest in environmental pollution such as low-carbon emission policies is increasing. Accordingly, the penetration rate of eco-friendly vehicles, including hydrogen battery vehicles capable of reducing carbon emission, is increasing, and thus it is required for disaster prevention and safety-related measures. In this study, the degree of risk for the concentration distribution of hydrogen when leaking hydrogen fuel vehicles according to ventilation conditions was analyzed through numerical analysis, limited to places in parking lots. As a result, when only one hydrogen tank was released, the combustible volume ratio of hydrogen in the underground parking lot was up to 8.6%, and as ventilation continued, the volume ratio of combustible hydrogen decreased to less than 1% after 150 seconds, indicating that mechanical ventilation is essential. In the case of simultaneous release or stage release of three hydrogen tanks, the final combustible volume ratio of hydrogen is similar, but the increase in the combustible volume ratio of hydrogen in the early stage of release is low, and further research is expected.
Keywords
Hydrogen fuel cell electric vehicle; Parking lot; Semi-closed space; Hydrogen leakage; Flammability level;
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Times Cited By KSCI : 1  (Citation Analysis)
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