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Hydrogen Dispersion and Ventilation Effects in Enclosures under Different Release Conditions

Author

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  • Dorota Brzezińska

    (Faculty of Process and Environmental Engineering, Lodz University of Technology, Wolczanska 213, 90-924 Lodz, Poland)

Abstract

Hydrogen is an explosive gas, which could create extremely hazardous conditions when released into an enclosure. Full-scale experiments of hydrogen release and dispersion in the confined space were conducted. The experiments were performed for hydrogen release outflow of 63 × 10 −3 m 3 /s through a single nozzle and multi-point release way optionally. It was found that the hydrogen dispersion in an enclosure strongly depends on the gas release way. Significantly higher hydrogen stratification is observed in a single nozzle release than in the case of the multi-point release when the gas concentration becomes more uniform in the entire enclosure volume. The experimental results were confirmed on the basis of Froud number analysis. The CFD simulations realized with the FDS code by NIST allowed visualization of the experimental hydrogen dispersion phenomenon and confirmed that the varied distribution of hydrogen did not affect the effectiveness of the accidental mechanical ventilation system applied in the tested room.

Suggested Citation

  • Dorota Brzezińska, 2021. "Hydrogen Dispersion and Ventilation Effects in Enclosures under Different Release Conditions," Energies, MDPI, vol. 14(13), pages 1-11, July.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:13:p:4029-:d:588274
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    References listed on IDEAS

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    1. Sethu Sundar Pethaiah & Kishor Kumar Sadasivuni & Arunkumar Jayakumar & Deepalekshmi Ponnamma & Chandra Sekhar Tiwary & Gangadharan Sasikumar, 2020. "Methanol Electrolysis for Hydrogen Production Using Polymer Electrolyte Membrane: A Mini-Review," Energies, MDPI, vol. 13(22), pages 1-17, November.
    2. Radosław Kaplan & Michał Kopacz, 2020. "Economic Conditions for Developing Hydrogen Production Based on Coal Gasification with Carbon Capture and Storage in Poland," Energies, MDPI, vol. 13(19), pages 1-20, September.
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