Search results with tag "Liquid hydrogen"
Energy and the Hydrogen Economy
afdc.energy.gov(neglecting non-ideal gas effects). The common liquid energy carriers like methanol, propane and octane (gasoline) surpass liquid hydrogen by factors 1.8 to 3.4, respectively. But at 800 bar or in the liquid state hydrogen must be contained in hi-tech pressure tanks or in cryogenic containers, while the liquid
DOE Hydrogen and Fuel Cells Program Record
www.hydrogen.energy.gov2) for storage onboard a hydrogen vehicle. Two physical hydrogen storage methods are considered: H 2 gas compressed to high pressure (350, 700 bar) and liquid hydrogen (LH 2). Theoretical minimum energy requirements are determined from exergy differences using the standard properties of “normal” hydrogen (25% para-H 2 spin
Modelling of liquid hydrogen spills - Health and Safety ...
www.hse.gov.ukHowever, there are few studies that attempt to measure the processes involved in a liquid hydrogen spill, rather than solely focus on hydrogen dispersion and explosions, including its interaction with ambient conditions and
Advanced Hydrogen Liquefaction Process
www.hydrogen.energy.govAn Optimization Study of Liquid Hydrogen Boil -Off Losses, Int. J. Hydrogen Energy., v. 17, p. 227, 1992. Heat of conversion from normal to para is higher than the heat of liquefaction
STANDARD FOR HYDROGEN PIPING SYSTEMS AT USER …
www.asiaiga.orgliquid hydrogen service. Piping systems shall be designed to take into consideration the following: a) fully depressurize the system for maintenance (for example, to avoid pressure trapped behind check valves); b) isolate the system for maintenance, (for example, double block and …
Hydrogen Delivery Liquefaction and Compression
www1.eere.energy.gov6 Hydrogen Liquefaction ¾There are 10 hydrogen liquefaction plants in North America zTrain size ranges from 6 to 35 TPD (5,400 to 32,000 kg/day) ¾In the 1960’s, liquid hydrogen plants were built to support the Apollo program. Today, liquid hydrogen is used to reduce the cost of hydrogen distribution. zDelivering a full tube trailer of hydrogen to a customer results in a
Liquid Hydrogen Storage: Status and Future Perspectives
www.utwente.nlall liquid hydrogen storage tanks. •Currently, most ground -based liquid hydrogen storage tanks have perlite+vacuum insulation without active shielding, resulting in boil-off rates of 1-5%/day. •Boil-off could be reduced to 0.01-0.05%/day by using storage tanks based on LHe technology (MLI insulation and active shielding).
Liquid hydrogen - Air Products & Chemicals
www.airproducts.com2 Uses Liquid hydrogen is used in large volumes in the space program as a primary rocket fuel for combustion with oxygen or fluorine, and as a pro-