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Recent Progress in Hydrogen Flammability Prediction for the Safe Energy Systems

Title
Recent Progress in Hydrogen Flammability Prediction for the Safe Energy Systems
Author
김성중
Keywords
hydrogen energy; hydrogen safety; flammability; flame extinction; heat loss; Lewis number; flame stretch; chemical kinetics
Issue Date
2020-12
Publisher
MDPI
Citation
ENERGIES, v. 13, NO 23, article no. 6263, Page. 1-44
Abstract
Many countries consider hydrogen as a promising energy source to resolve the energy challenges over the global climate change. However, the potential of hydrogen explosions remains a technical issue to embrace hydrogen as an alternate solution since the Hindenburg disaster occurred in 1937. To ascertain safe hydrogen energy systems including production, storage, and transportation, securing the knowledge concerning hydrogen flammability is essential. In this paper, we addressed a comprehensive review of the studies related to predicting hydrogen flammability by dividing them into three types: experimental, numerical, and analytical. While the earlier experimental studies had focused only on measuring limit concentration, recent studies clarified the extinction mechanism of a hydrogen flame. In numerical studies, the continued advances in computer performance enabled even multi-dimensional stretched flame analysis following one-dimensional planar flame analysis. The different extinction mechanisms depending on the Lewis number of each fuel type could be observed by these advanced simulations. Finally, historical attempts to predict the limit concentration by analytical modeling of flammability characteristics were discussed. Developing an accurate model to predict the flammability limit of various hydrogen mixtures is our remaining issue.
URI
https://www.mdpi.com/1996-1073/13/23/6263https://repository.hanyang.ac.kr/handle/20.500.11754/175065
ISSN
1996-1073
DOI
10.3390/en13236263
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > NUCLEAR ENGINEERING(원자력공학과) > Articles
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