Experiment and visualization of omnidirectional acoustic propagation for high-pressure hydrogen storage leakage in unconfined environments

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NETL
NSTL
Elsevier

外文摘要：© 2024 Hydrogen Energy Publications LLCHydrogen, a clean energy source, is pivotal in achieving carbon neutrality but presents safety challenges due to its high diffusivity and flammability. This study explores hydrogen leakage acoustics and spatial characteristics under high-pressure, unconfined conditions. Helium, validated as a surrogate gas with a sound pressure difference of <5 dB, was used for safe experimentation. Using Background Oriented Schlieren (BOS) imaging, significant directional and spatial dependencies were identified, with optimal detection at 1.5 m height and highest sound levels between 300° and 360°. The influence of nozzle geometry was also highlighted, with flat nozzles producing progressively higher sound pressure levels compared to circular ones. Threshold flow rates for audible detection were determined, approaching the maximum permissible leakage limit of 118 NL/min in noisy environments. These findings provide a foundation for safer and more effective hydrogen detection systems.

外文关键词：

Acoustic spatial characteristicsBackground oriented schlieren (BOS)Flow thresholdHydrogen leakageSpectrum analysis

作者：

Miao Y.、Avlessi K.J.、Semassou C.、Li Y.、Chen H.-M.、Xu J.、Wu D.

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作者单位：

College of Mechanical & Energy Engineering Beijing University of Technology||Beijing Key Laboratory of Advanced Manufacturing Technology Beijing University of Technology

College of Mechanical & Energy Engineering Beijing University of Technology

Polytechnic School of Abomey-Calavi (EPAC) University of Abomey-Calavi

School of Information Science and Technology Beijing University of Technology

College of Engineering Shanghai Ocean University

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出版年：

2025

DOI：

10.1016/j.ijhydene.2024.12.003

International journal of hydrogen energy

ISSN：0360-3199

年,卷(期)：2025.99(Jan.)

参考文献量47