Abstract

The accurate modeling of the fast-fill dynamics occurring in hydrogen fueled vehicle storage cylinders is a complex process, and to date those dynamics have not been thoroughly studied. In this paper, based on the first and second laws of thermodynamics, conservation of mass and real gas assumptions, a numerical method has been developed to study the fast filling process of the hydrogen vehicle’s cylinder. Thermodynamic properties' table has been employed for the case of the real gas model. The model has been applied for a single reservoir tank. The results indicate that there is a temperature rise on the order of 100 K or more during the charging process. The results also indicate that ambient temperature has a strong effect on the filling process and final hydrogen cylinder conditions.

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