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By Mohler F.L.

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Extra resources for A Photo-Ionization Experiment with Hydrogen

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3 High Pressure Infrastructure The distribution of gaseous hydrogen from centralized production facilities is usually effected by transportation in large pressure containers by road or rail. To supply large amounts of hydrogen, distribution via pipelines is the most economical way [16]. 3 Characteristics of commercially obtainable automotive pressure containers. Net volume [dm3] Type Nominal pressure [bar] Test pressure [bar] Tank system weight [kg] Tank system volume [dm3] H2 density [kg mÀ3] at 25  C H2 content [Nm3] H2 content [kg] Grav.

1993) Analysis and optimization of thermal stratification and self-pressurization effects in liquid hydrogen storage systems – Part 1: Model development. J. Energy Resources Technology, 115, 221–227. Haberbusch, M. and McNelis, N. (1996) Comparison of the Continuous Freeze Slush Hydrogen Production Technique to the Freeze/Thaw Technique. NASA Technical Memorandum 107324. Kindermann, H. (2006) Thermodynamik der Wasserstoffspeicherung. [Thermodynamics of Hydrogen Storage]. Diploma thesis, HyCentA Graz, Montanuniversit€at Leoben.

Therefore, the low heat of adsorption released during physisorption is an advantage for mobile storage technologies which require on-board refueling. However, due to the weak interaction between molecular hydrogen and solids, the amount of hydrogen stored at room temperature is very low, while it can consistently increase at low temperatures, typically 77 K, that is, the temperature of liquid nitrogen. 5 bar. 5 J molÀ1 0 KÀ1. 5 bar. However, it should be considered that this optimum value is very sensitive to the estimate of the entropy change and that lower DS0 were also obtained 0 leading to more negative DHopt [5, 6].

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A Photo-Ionization Experiment with Hydrogen by Mohler F.L.

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