LLNL is developing cryogenic capable pressure vessels with thermal endurance at least 5 times longer than conventional liquid hydrogen (LH2) tanks that can eliminate evaporative losses in routine use. These pressure vessels can be fueled with ambient temperature H2 and/or LH2. When filled with LH2, these vessels contain 2-3 times more fuel than compressed H2 tanks at room temperature. LLNL has demonstrated the concept onboard two vehicles. The generation 2 vessel, installed onboard a Toyota Prius hydrogen hybrid, demonstrated the longest driving distance on a single LH2 tank and the longest LH2 hold time without evaporative losses. The generation 3 vessel, now under construction, promises to maximize packaging efficiency by minimizing insulation thickness while still providing acceptable thermal endurance.
High Density Automotive Hydrogen Storage with Cryogenic Capable Pressure Vessels
2009
14 pages
Report
No indication
English
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