Investigation on the flame and pressure behaviors of vented hydrogen-air deflagration from a duct-connected vessel: Effects of venting diameter and static activation pressure

Tao Wang, Yuhuai Sheng, Fan Nan, Litao Liu, Jian Chen, Fanyi Meng, Jun Deng, Jihao Shi and Zhenmin Luo

Energy, 2024, vol. 307, issue C

Abstract: To investigate the effect of venting diameter and static activation pressure on the explosion venting behavior of hydrogen-air mixtures, tests were performed utilizing the explosion venting test platform. The pressure and flame propagation characteristics under different venting diameters (30–70 mm) and pressures (0.1–0.4 MPa) were experimentally examined, and numerical calculation was employed to analyze the explosion venting characteristics of hydrogen at a stoichiometric ratio. Compared to fuel-lean and fuel-rich hydrogen conditions, the first peak pressure within the container is maximal under the hydrogen-air mixtures at a stoichiometric ratio. Under stoichiometric and fuel-rich hydrogen-air mixtures, pressure peak structures inside the container are both bimodal. When D = 30 mm, as Pstat is increased from 0.1 to 0.2 MPa, Pmax11 increases. However, when Pstat exceeds 0.2 MPa, with the increase of Pstat, Pmax11 remains at the level of 0.69 MPa, reaching the “venting bottleneck”. The discovery of this phenomenon is crucial for the research and development of the venting device for hydrogen storage equipment. Numerical simulations indicate the formation of the second peak pressure inside the container is primarily attributed to the intense obstruction of venting by secondary explosions within the duct.

Keywords: Hydrogen-air mixtures; Deflagration; Bursting disc; Venting pressure; Flame propagation (search for similar items in EconPapers)
Date: 2024
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544224024794
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:307:y:2024:i:c:s0360544224024794

DOI: 10.1016/j.energy.2024.132705

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().