Last Updated Fri, 05/24/2024 - 23:46
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… (2-D) simulation of spontaneous ignition of high-pressure hydrogen in a length of duct is conducted in order to explore … due to leading shock wave reflection at the wall, hydrogen penetration into shock-heated air near the wall, and deep penetration of hydrogen into shock-heated air behind the leading shock wave …
Last Updated Fri, 05/24/2024 - 23:46
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… to investigate the radiative heat emission of small scale hydrogen/airexplosions also impurified by minor amounts of … and combustible fuels were injected into the blasting hydrogen/air gas cloud. Fuels werea spray of a solvent … was estimated. … 1085 … Heat Radiation of Burning Hydrogen-Air Mixtures Impurified by Organic Vapour and …
Last Updated Sat, 11/04/2017 - 04:27
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… The study of compressed hydrogen releases from high-pressure storage systems has practical application for hydrogen and fuel cell technologies. Such releases may occur … failure of a pressure release device (PRD). Understanding hydrogen behavior during and after the unintended release …
Last Updated Sat, 11/04/2017 - 04:27
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… to civilian demand. Especially, the safety concerning hydrogen storage is the most important problem. Among the candidate methods to store hydrogen, the metal hydride storage is promising method owing to the storage mechanism of chemical absorption of hydrogen to metal hydrides. In this study, the new …
Last Updated Thu, 09/12/2019 - 23:40
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… to speculate on possible safety risks originating from a hydrogen economy developed in the future. Tools that support … risks related to energy scenarios in a possible future hydrogen economy. … 1085 … Agent-based As an Alternative To Prognostic Modeling of Safety Risks in Hydrogen Energy Scenarios …
Last Updated Sat, 11/04/2017 - 04:27
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… Hydrogen is increasingly investigated as an alternative fuel … systems using generators. The safety issues related to hydrogen gas are further exasperated by expensive … than expensive physical sensors) in connection with hydrogen production with a Hogen (R) 20 electrolyzer system. …
Last Updated Sat, 11/04/2017 - 04:27
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… out the real explosion reasons of the 300 m(3) wet-gas hydrogen holder in a power company, Disaster Prevention … accident of the 300m(3) flammahle and explosive wet-gas hydrogen holder …
Last Updated Sat, 11/04/2017 - 04:27
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… of HCNG engine according to the high purity hydrogen contents. The HCNG fuel was made by the mixture with a high purity hydrogen (H2) and a natural gas. The test vehicle was applied … premixed HCNG fuels with mixed rate of 10, 20 and 30%2of hydrogen were used to maintain the safety. In order to …
Last Updated Sat, 11/04/2017 - 04:27
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… steels, especially those of higher tensile strength, Hydrogen-Induced Stress Corrosion Cracking (HISCC) can lead … risk. The interaction of the steel with the diffusing hydrogen leads to changes in the material's properties that … for the early recognition of HISCC. … Early detection of hydrogen-induced stress corrosion cracking using …
Last Updated Sat, 11/04/2017 - 04:27
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… years, development of energy conversion systems using hydrogen as an energy source has been accelerated globally. Even though hydrogen is an environment-friendly energy source, safety and … issues in storage, transportation, and usage of hydrogen should be clearly resolved in every application. …
Last Updated Sat, 11/04/2017 - 04:27
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… Response time is a critically important property of hydrogen safety sensors. Recovery times are less important … … A comparison of test methods for the measurement of hydrogen sensor response and recovery times …
Last Updated Sat, 11/04/2017 - 04:27
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… An accidental hydrogen release within an equipment enclosure may result in … two case studies, and reviews the limitations. First, a hydrogen dispersion pattern is obtained from numerical … Ltd. All rights reserved. … Numerical simulation of hydrogen-air detonation for damage assessment in realistic …
Last Updated Fri, 05/24/2024 - 23:46
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… The safety issues related to explosion venting of hydrogen-air mixtures are significant and deserve more detailed investigation. Vented hydrogen-air explosion has been studied extensively in … In this paper, experiments about explosion venting of rich hydrogen-air mixtures were conducted in a cylindrical vessel …
Last Updated Fri, 05/24/2024 - 23:46
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… determine critical semi-open channel height (h*) in which hydrogen-air detonation may propagate. Three types of gaseous … mixture composition were used: 25%2 29.6%2and 40%2of hydrogen in air. Experimental setup was based on rectangular … reaches 3.1 or 3.6 for mixtures with 25%2and 40%2of hydrogen in air respectively. … 1085 … Experimental …
Last Updated Fri, 05/24/2024 - 23:46
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… application involving the production, storage or use of hydrogen, sensors are important devices for alerting to the presence of leaked hydrogen. Hydrogen sensors should be accurate, sensitive, and specific, …
Last Updated Fri, 05/24/2024 - 23:46
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… and standards for the approval of composite cylinders in hydrogen service are currently based on deterministic … load cycle requirements for composite cylinders for hydrogen …
Last Updated Sat, 11/04/2017 - 04:27
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… deals with auto-ignition and combustion of high pressure hydrogen leaks through a tube with air into atmosphere. The experiments using a high pressure tube with hydrogen and an extension tube with air of 10 mm diameter are … the auto-ignition and combustion behavior of high pressure hydrogen jet spouting through the extension tube. In order to …
Last Updated Fri, 05/24/2024 - 23:46
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… pressure up to several hundred bars for direct storage of hydrogen in pressurized vessels. Compared to atmospheric … H2 at values compatible with safety requirements. … 1085 … Hydrogen Safety Aspects Related to High Pressure PEM Water …
Last Updated Sat, 11/04/2017 - 04:27
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… Fracture of materials caused by hydrogen embrittlement is a very serious problem in the operation of pipelines subjected to the effect of hydrogen charging (hydrosulfide-bearing media, external … stage of the process of crack propagation initiated by hydrogen. In order to predict the transition from a …
Last Updated Sat, 11/04/2017 - 04:27
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… available … Energy Policy is Technology Politics-the Hydrogen Energy Case (with an Eye Particularly on Safety Comparison of Hydrogen Energy To Current Fuels) …
