Uncertainties in risk assessment of hydrogen discharges from pressurized storage vessels at low temperatures

Frank Markert, D. Melideo, D. Baraldi

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    Abstract

    Evaluations of the uncertainties resulting from risk assessment tools to predict releases from the various hydrogen storage types are important to support risk informed safety management. The tools have to predict releases from a wide range of storage pressures (up to 80 MPa) and temperatures (at 20K) e.g. the cryogenic compressed gas storage covers pressures up to 35 MPa and temperatures between 33K and 338 K. Accurate calculations of high pressure releases require real gas EOS. This paper compares a number of EOS to predict hydrogen properties typical in different storage types. The vessel dynamics are modeled to evaluate the performance of various EOS to predict exit pressures and temperatures. The results are compared to experimental data and results from CFD calculations.
    Original languageEnglish
    Title of host publicationProceedings of 5th International Conference on Hydrogen Safety
    Number of pages13
    PublisherICHS
    Publication date2013
    Publication statusPublished - 2013
    Event5th International Conference on Hydrogen Safety - Brussels, Belgium
    Duration: 9 Sep 201311 Sep 2013
    Conference number: 5
    http://www.ichs2013.com/

    Conference

    Conference5th International Conference on Hydrogen Safety
    Number5
    CountryBelgium
    CityBrussels
    Period09/09/201311/09/2013
    Internet address

    Cite this

    Markert, F., Melideo, D., & Baraldi, D. (2013). Uncertainties in risk assessment of hydrogen discharges from pressurized storage vessels at low temperatures. In Proceedings of 5th International Conference on Hydrogen Safety ICHS.