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http://dx.doi.org/10.7731/KIFSE.2019.33.1.023

Combustion Characteristics and the Modeling of Ionized Methane for Battery Fires  

Ko, Hyuk-Ju (Dept. of Safety Engineering, Pukyong National Univ.)
Lee, Eui-Ju (Dept. of Safety Engineering, Pukyong National Univ.)
Publication Information
Fire Science and Engineering / v.33, no.1, 2019 , pp. 23-29 More about this Journal
Abstract
Rechargeable battery such as lithium-ion battery has been noticed as a kinds of the energy storage system in the recent energy utilization and widely used actually in various small electronic equipment and electric vehicles. However, many thermal runaway caused battery accidents occurred recently, which still is obstacle for advanced application of lithium ion battery. One of the main differences to general fires is the existence of ionized electrolyte with electron during combustion. Therefore, we simply simulated the ion addition effects of battery fires by introducing an ionized fuel in jet diffusion flames. When the ionized methane through a corona discharge was used as fuel, the overall flame stability and shape such as flame length showed no significant difference from normal methane flame, but NOx and CO emissions measured at the post flame region decreased. The ion addition effect of methane oxidation was also numerically simulated with the modeling of hydrogen addition in the mixture. It was confirmed that the hydrogen addition at a fixed temperature had a similar effects on ionization of methane and hence could be modeled successfully.
Keywords
Battery fire; Ionization; Methane jet flames; NOx; Carbon monoxide;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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