Last Updated Fri, 05/24/2024 - 23:46
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… In the transition to a hydrogen economy it is likely that hydrogen will be used or stored in closeproximity to other … that result in the release of two ormore fuels, such as hydrogen and natural gas, that can mix and form a hazard. A …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… into physical phenomena underlying spontaneous ignition of hydrogen at sudden release from high pressure storage and its … in a tube with a rupture disk separating high pressure hydrogen storage and the atmosphere. Numerical experiments … is concluded that the model developed can be applied for hydrogen safety engineering, in particular for development of …
Last Updated Sat, 11/04/2017 - 04:27
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… physical phenomena underlying the spontaneous ignition of hydrogen following a sudden release from high-pressure … a non-inertial rupture disk separating the high-pressure hydrogen storage and the atmosphere is described. Numerical … It is concluded that the LES model can be applied for hydrogen safety engineering, e.g. for the development of …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… three different areas were tested for the RED-CVE vent. Hydrogen concentration was homogenised inside the two … by use of two different fans. The study included hydrogen concentration from 8,5%2to 12,5%2 while three … far vent ignition the pressure at first increased with hydrogen concentration, reached a peak value at 11%2ol. …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… Accidental leakage of hydrogen in residential fuel cell systems can be dangerous because hydrogen has a high risk of inflammation or explosion when … cell systems should be properly designed to reduce the hydrogen stagnation inside the system enclosure and thus to …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… Recent advances in hydrogen technologies allow the conversion between electric energy and hydrogen, increasing efficiency and reducing costs. Electric systems based on Hydrogen technology can be used to replace large battery …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… experimental results on the mechanisms and kinetics of hydrogen-air flammable gas cloud formation and evolution due to foreseeable (less than 10-3 kg/sec) hydrogen leaks into confined spaces with different shapes, … using a spatially distributed, reconfigurable net of 24 hydrogen gauges with short response time. This experimental …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… a key issue of safety. The catalytic oxidation of isotopic hydrogen including tritium is a conventional method for … Particularly, the metal honeycomb has an advantage for hydrogen gas oxidization at room temperature because it is … of high performance catalyst for oxidation of tritiated hydrogen and methane gases …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… were performed simulating tunnel accidents with a hydrogen powered vehicle. The investigated scenarios assume … times. Design measures can be used to limit the risk of hydrogen driven vehicles to the level of gasoline cars. … … and safety evaluation of tunnel accidents with a hydrogen powered vehicle …
Last Updated Fri, 05/24/2024 - 23:46
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… technology bear the risk of the formation offlammable hydrogen/air mixtures either due to the direct use of hydrogen or due to hydrogenappearing as a by-product. If there?s the possibility of hydrogen being released accidentally into closedareas …
Last Updated Fri, 05/24/2024 - 23:46
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… Understanding of the specific features of formation of the hydrogen-containing clouds inside of confined spaces is important for fire or explosion protection of the hydrogen facilities. Different sub- sonic modes of light gas (hydrogen and helium) release (with flowrates up to 0.1 g/sec) …
Last Updated Fri, 05/24/2024 - 23:46
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… For hydrogen fueled vehicles to attain significant market … acceptable levels. To achieve this goal, on-board vehicle hydrogen storage systems should undergo risk analyses during … being researched. Collision of a vehicle having such a hydrogen storage system was selected as a dominant accident …
Last Updated Fri, 05/24/2024 - 23:46
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… and sodium hydroxide additives in the mitigation of hydrogen deflagrations. The results of the work suggest that … overpressure rise and narrowing the flammability limits of hydrogen-oxygen-nitrogen mixtures. … 1085 … The Mitigation of Hydrogen Explosions Using Water Fog, Nitrogen Dilution and …
Last Updated Tue, 12/24/2024 - 22:12
Safety Culture Case Studies
… at a slow rate through a leaking manual bypass valve. The liquid left in the bottom of the column heated slowly and …
Last Updated Sat, 11/04/2017 - 04:27
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… demonstrated that metal properties depend strongly on both hydrogen concentration, and on its redistribution with … energy. According to accident statistics presence of hydrogen within metal is in many cases the main reason for … It is concluded that the lack of a single metrological hydrogen concentration measurement system makes it impossible …
Last Updated Sat, 11/04/2017 - 04:27
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… The concentration of hydrogen sulfide in the atmosphere of a sewage purification … factor of the spikes. Through simple remedial actions the hydrogen sulfide concentration associated with this activity … above 100 ppm to less than 2 ppm. Olfactory fatigue to hydrogen sulfide and strong offensive odors from other …
Last Updated Fri, 05/24/2024 - 23:46
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… to obtain effective diffusion coefficients of helium and hydrogen (released as forming gas for safety reasons) through … of Effective Diffusion Coefficient of Helium and Hydrogen Through Gypsum …
Last Updated Sat, 11/04/2017 - 04:27
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… Hydrogen sensors are increasingly recognized as safety enhancing components in applications where hydrogen is used as a clean energy carrier. The availability of low-cost, reliable, high performance hydrogen sensors is critical for facilitating the widespread …
Last Updated Fri, 05/24/2024 - 23:46
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… occurred, were measured. The flammable mixtures were hydrogen-air mixtures at several equivalence ratios and … The intensities of blast waves by the explosions of hydrogen-air mixtures were much larger than that of … … 1085 … Blast Wave From Bursting Enclosure with Internal Hydrogen-Air Deflagration …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… Delayed explosions of accidental high pressure hydrogen releases are an important risk scenario in safety … of the influence of obstacles on a delayed deflagration of hydrogen jets. The computational fluid dynamics (CFD) code … deflagration to detonation. … 1085 … Delayed Explosion of Hydrogen High Pressure Jets in a Highly Obstructed Geometry …
