Theoretical and Experimental Investigation of Explosion Characteristics of Hydrogen Explosion in a Closed Vessel

Huadao Xing (), Runze Yu, Guangan Xu, Xiaodong Li, Yanyu Qiu (), Derong Wang, Bin Li and Lifeng Xie
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Huadao Xing: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Runze Yu: State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, The Army Engineering University of PLA, Nanjing 210007, China
Guangan Xu: State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, The Army Engineering University of PLA, Nanjing 210007, China
Xiaodong Li: School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Yanyu Qiu: State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, The Army Engineering University of PLA, Nanjing 210007, China
Derong Wang: State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, The Army Engineering University of PLA, Nanjing 210007, China
Bin Li: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
Lifeng Xie: School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Energies, 2022, vol. 15, issue 22, 1-14

Abstract: A simplified model that calculates the deflagration pressure–time curves of a hydrogen explosion was proposed. The deflagration parameters (pressure peak, duration, deflagration index, and impulse) of hydrogen–air mixtures with different hydrogen concentrations were experimentally investigated. The results show that the pressure curves calculated by the model are consistent with experimental data pertaining to a methane and hydrogen explosion. By comparison, the pressure peak and deflagration index are found to be influenced by the aspect ratio and surface area of vessels. The impulse and explosion times at fuel-lean hydrogen concentrations are greater than those at fuel-rich concentrations. When the hydrogen concentration is between 34 vol.% and 18 vol.%, the greatest explosion damage effect is formed by both the overpressure and the impulse, which should be considered for hydrogen explosion safety design in industrial production.

Keywords: pressure profile; impulse; hydrogen concentration; distributed calculation model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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