Last Updated Sat, 11/04/2017 - 04:27
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… Temperature increase during hydrogen fueling process is a significant safety concern of a high pressure hydrogen vessel. Hence, thermal characteristics of a Type IV cylinder during hydrogen filling process need to be understood. In this …
Last Updated Sat, 11/04/2017 - 04:27
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… develop safety standards related to the sudden release of hydrogen from a high pressure reservoir. In this work, a … to numerically simulate the release of high pressure hydrogen (70 MPa) from a reservoir when the release area into … air is expanding with time. Furthermore, high pressure hydrogen flows cannot be accurately simulated by the ideal …
Last Updated Thu, 05/02/2024 - 20:21
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… announced the launch of a new, free, online national hydrogen safety training resource for emergency responders. … Northwest National Laboratory and the California Fuel... … Hydrogen and Fuel Cell First Responder Training Resources …
Last Updated Fri, 05/24/2024 - 23:46
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… InsHyde was to investigate realistic small-medium indoor hydrogen leaks and provide recommendations for the safe use/storage of indoor hydrogen systems. Additionally, InsHyde served to integrate … work. Dispersion experiments were performed using hydrogen and helium at the INERIS gallery facility to …
Last Updated Sat, 11/04/2017 - 04:27
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… InsHyde was to investigate realistic small-medium indoor hydrogen leaks and provide recommendations for the safe use/storage of indoor hydrogen systems. Additionally, InsHyde served to integrate … work. Dispersion experiments were performed using hydrogen and helium at the INERIS gallery facility to …
Last Updated Sat, 11/04/2017 - 04:27
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… A current knowledge gap in hydrogen safety research concerns the influence of mixture … by means of experimental data. … Flame Acceleration in Hydrogen/Air Mixtures with Concentration Gradients …
Last Updated Sat, 11/04/2017 - 04:27
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… types of materials are commonly used for constructing hydrogen pressure vessels. However, carbon fiber reinforced … plastic (CFRP) materials are commercially used in hydrogen vessels now a day. Commercially used aluminium liner … CFRP liner vessels are becoming more popular in modern hydrogen vehicle systems. Moreover, CFRP vessel has light …
Last Updated Fri, 05/24/2024 - 23:46
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… comparative study of regulations, codes and standards for hydrogen fuelling station in the following countries: United … Denmark and Spain. The following technical components of a hydrogen fuelling station are included in the scope of the study: the hydrogen storage systems (cryogenic or compressed gases) and …
Last Updated Fri, 05/24/2024 - 23:46
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… We have modeled sudden hydrogen expansion from a cryogenic pressure vessel. This … geometry of cryogenic vessels. The model can solve sudden hydrogen expansion for initial pressures up to 1210 bar and … 27 to 400 K. For practical reasons, our study focuses on hydrogen release from 345 bar, with temperatures between 62 K …
Last Updated Sat, 11/04/2017 - 04:27
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… In our society the use of hydrogen is continually growing and there will be a … in safety and risk studies are validated in the past for hydrogen use. However there is a very important need of … configurations for strict validation of CFD simulations of hydrogen. This aspect may imply that the results of …
Last Updated Fri, 05/24/2024 - 23:46
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… The pressure of compressed hydrogen changes with temperature when mass and volume are constant. Therefore, when a compressed-hydrogen tank is filled with a certain amount of hydrogen it is necessary to adjust the filling pressure …
Last Updated Fri, 05/24/2024 - 23:46
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… risks to the environments due to burning of fossils fuels, hydrogen is seen as an efficient and application related … of applications connected with production and use of hydrogen and the related risks have been identified, and a … potential lack of necessary knowledge in order to handle hydrogen in a safe way concerning the various applications. …
Last Updated Sat, 11/04/2017 - 04:27
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… highs and ever-increasing tighter environmental policies, hydrogen-powered vehicles have great potential to … and decrease dependence on foreign oil imports. While hydrogen fuel is exciting for automotive industries due to … advantages, design and manufacture safe and reliable hydrogen tanks is recognized as the number one priority in …
Last Updated Sat, 11/04/2017 - 04:27
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… kinetic improvement and stabilization of the cyclable hydrogen capacity have been achieved upon variation in the … can be rehydrided to 4 wt%2at 104 degreesC and 87 atm of hydrogen within 17h. The improved kinetics allowed us to … dehydriding of NaAlH(4)(s) to Na(3)AlH(6) and Al and the hydrogen plateau pressure of 7 arm at 80 degreesC are in line …
Last Updated Fri, 05/24/2024 - 23:46
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… to characterize and predict the behavior of unintended hydrogen releases. In the case where the hydrogen leak remains unignited, knowledge of the … in determining consequence distances for the safe use of hydrogen. In the case where a high-pressure leak of hydrogen …
Last Updated Sat, 11/04/2017 - 04:27
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… Hydrogen may appear to be an attractive alternative fuel due … advantages, the design and manufacture a safe and reliable hydrogen tank is the number one priority for development and deployment of hydrogen technology. Compared with aluminum-lined hydrogen …
Last Updated Sat, 11/04/2017 - 04:27
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… into the ignition characteristics of lean pre-mixed hydrogen/air mixtures is conducted using a stagnation-point … of potential fire safety hazards associated with hydrogen release in the presence of a catalyst. Two distinct … can be induced, greatly increasing the apparent danger of hydrogen leaks in the presence of a platinum surface. The …
Last Updated Sat, 11/04/2017 - 04:27
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… combustion experiments on the hazard potential of a severe hydrogen leakage inside a fuel cell cabinet using a generic … of a commercially available fuel cell application. Hydrogen amounts from 1.5 to 15 g were released within 1 s … different amounts of internal enclosure obstruction on the hydrogen concentrations measured at fixed positions in- and …
Last Updated Fri, 05/24/2024 - 23:46
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… and power plant maker, focuses on two aspects concerning hydrogen: When hydrogen is used as the alternative energy resources from … provide the high-quality and high-efficiency devices for hydrogen production, storage, and utilization. Utilization as …
Last Updated Fri, 05/24/2024 - 23:46
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… To define a strategy of mitigation for containerized hydrogen systems (fuel cells for example) against explosion, … This article presents an experimental study on accidental hydrogen releases and dispersion into an enclosure of 4 m3 (2 … to improve them. … 1085 … Development of a realistic hydrogen flammable atmosphere inside a 4-m3 enclosure …
