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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Hydrogen Storage and Production
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1456316
This article is part of the Research Topic Advancements in Thermal Safety and Management Technologies for Energy Storage Systems View all 6 articles

Experimental Study on Dynamic Response Performance of Hydrogen Sensor in Confined Space under Ceiling

Provisionally accepted
Qize He Qize He 1*Fanyue Kong Fanyue Kong 2Ruilin Li Ruilin Li 1Juntao Yang Juntao Yang 2
  • 1 Shanghai Fire Research Institute of MEM, Shanghai, China
  • 2 University of Shanghai for Science and Technology, Shanghai, Shanghai Municipality, China

The final, formatted version of the article will be published soon.

    With the advancement of Fuel Cell Vehicles (FCVs), detecting hydrogen leaks is critically important in facilities such as hydrogen refilling stations. Despite its significance, the dynamic response performance of hydrogen sensors in confined spaces, particularly under ceilings, has not been comprehensively assessed. This study utilizes a catalytic combustion hydrogen sensor to monitor hydrogen leaks in a confined area. It examines the effects of leak size and placement height on the distribution of hydrogen concentrations beneath the ceiling. Results indicate that hydrogen concentration rapidly decreases within a 0.5-1.0m range below the ceiling and declines more gradually from 1.0-2.0m. The study further explores the attenuation pattern of hydrogen concentration radially from the hydrogen jet under the ceiling. By normalizing the radius and concentration, it was determined that the distribution conforms to a Gaussian model, akin to that observed in open space jet flows. Utilizing this Gaussian assumption, the model is refined by incorporating an impact reflux term, thereby enhancing the accuracy of the predictive formula.

    Keywords: Hydrogen leakage, Confined space, Concentration distribution pattern, Hydrogen detection, FCV safety

    Received: 17 Jul 2024; Accepted: 04 Oct 2024.

    Copyright: © 2024 He, Kong, Li and Yang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Qize He, Shanghai Fire Research Institute of MEM, Shanghai, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.