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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 …
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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 …
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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 …
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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. …
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… in both risk analysis in general and the risk analysis of hydrogen applications including infrastructure in particular. … modelling the risks associated with the introduction of hydrogen as an energy carrier. In this study we explore the benefits of modelling a hydrogen refuelling station using BN. The study takes its …
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… proposed and developed for high energy density automotive hydrogen storage applications. As these materials are implemented into hydrogen storage systems, developers must understand their … contamination allows for the design of safe and effective hydrogen storage systems along with the development of …
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… several incidents of workplace accidents involving hydrogen sulphide exposure in recent years. Biological … cases. Biological monitoring has a role in identifying hydrogen sulphide exposure in incidents, whether these are … long-lasting effects or impaired ability to escape) for hydrogen sulphide. Crown Copyright (C) 2014 Published by …
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… In order to reduce green house gases, hydrogen fueled vehicles are expected to be commercialized in the near future. Hydrogen is nontoxic, but it is flammable. A relatively low ignition energy can ignite a hydrogen-air mixture when the concentration of hydrogen is …
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… As hydrogen fuel cell vehicles become more widely adopted by … vehicles require high-pressure (either 350 or 700 bar) hydrogen, and therefore the refueling infrastructure must … … Validated Equivalent Source Model for an Underexpanded Hydrogen Jet …
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… When using hydrogen gas as an ecofriendly energy sources, it is … a safety assessment and ensure thereliability of the hydrogen pressure vessel against hydrogen embrittlement expected in the steel materials. In …
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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 …
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… When hydrogen flows through a small finite length constant exit … the effect of the pipe boundary layer on the unsteady hydrogen sonic jet from a high pressure reservoir (up to 70 … … 1085 … Boundary Layer Effects on the Critical Nozzle of Hydrogen Sonic Jet …
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… the process hazards are investigated systematically about hydrogen production plants. Be used qualitative Safety … about parameters that flow, pressure, temperature of hydrogen production plants through HAZOP that making … word (deviation) . FMEA , RPN . … Safety Assessment for Hydrogen Gas Production Facilities (Steam Reforming) …
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… Development of regulations, codes and standards on hydrogen safety is a primary ingredient in overcoming barriers to widespread use of hydrogen energy. Key points of the new China National Standard Essential safety requirements for hydrogen systems, metal hydrogen compatibility and risk …
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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 …
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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 …
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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 …
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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 …
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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 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 …