Cristin-resultat-ID: 1839766
Sist endret: 24. februar 2021, 11:28
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

Pressure peaking phenomena: Unignited hydrogen releases in confined spaces – Large-scale experiments

Bidragsytere:
  • Agnieszka Lach
  • Andre Vagner Gaathaug og
  • Knut Vågsæther

Tidsskrift

International Journal of Hydrogen Energy
ISSN 0360-3199
e-ISSN 1879-3487
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2020
Trykket: 2020
Volum: 45
Hefte: 56
Sider: 32702 - 32712

Importkilder

Scopus-ID: 2-s2.0-85091934552

Beskrivelse Beskrivelse

Tittel

Pressure peaking phenomena: Unignited hydrogen releases in confined spaces – Large-scale experiments

Sammendrag

The aim of this study was to validate a model for predicting overpressure arising from accidental hydrogen releases in areas with limited ventilation. Experiments were performed in a large-scale setup that included a steel-reinforced container of volume 14.9 m3 and variable ventilation areas and mass flow rates. The pressure peaking phenomenon, characterized as transient overpressure with a characteristic peak in a vented enclosure, was observed during all the experiments. The model description presented the relationship between the ventilation area, mass flow rate, enclosure volume, and discharge coefficient. The experimental results were compared with two prediction models representing a perfect mix and the real mix. The perfect mix assumed that all the released hydrogen was well stirred inside the enclosure during the releases. The real mix prediction s used the hydrogen concentration and temperature data measured during experiments. The prediction results with both perfect mix and real mix showed possible hazards during unignited hydrogen releases.

Bidragsytere

Agnieszka Lach

  • Tilknyttet:
    Forfatter
    ved Institutt for prosess-, energi- og miljøteknologi ved Universitetet i Sørøst-Norge

Andre Vagner Gaathaug

  • Tilknyttet:
    Forfatter
    ved Institutt for prosess-, energi- og miljøteknologi ved Universitetet i Sørøst-Norge

Knut Vågsæther

  • Tilknyttet:
    Forfatter
    ved Institutt for prosess-, energi- og miljøteknologi ved Universitetet i Sørøst-Norge
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