One of the primary requirements for commercialization of hydrogen fuel-cell vehicles is the on-board storage of hydrogen in sufficient quantities. On-board storage of hydrogen by adsorption on nano-porous adsorbents at around liquid nitrogen temperatures and moderate pressures is considered viable and competitive with other storage technologies: liquid hydrogen, compressed gas, and metallic or complex hydrides. The four cryo-adsorber fuel tank processes occur over different time scales: refueling over a few minutes, discharge over a few hours, dormancy over a few days, and venting over a few weeks. The slower processes that are discharge, dormancy and venting are expected to have negligible temperature gradients within the bed, and hence are amenable to a lumped-parameter analysis. Here a quasi-static lumped-parameter model for the cryo-adsorber fuel tank is reported, and the results for these slower processes are discussed. An alternative solution method for dormancy and venting based on the thermodynamic state description is also described.


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    Title :

    A lumped-parameter model for cryo-adsorber hydrogen storage tank


    Additional title:

    Ein Modell mit konzentrierten Parametern für einen Wasserstoffspeichertank auf der Basis der Kryoadsorption


    Contributors:

    Published in:

    Publication date :

    2009


    Size :

    10 Seiten, 12 Bilder, 20 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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