Last Updated Wed, 11/20/2024 - 23:28
Document Library
… Hydrogen is a key energy carrier for modern society. The breaking of the hydrogen bonds within traditional hydrocarbon molecules has … push for lower carbon energy vectors, including pure hydrogen. Accurately modeling the dispersion, fire, and …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… analysis to a central pressurized storage tank for gaseous hydrogen has been performed to attend requirements of … Environment Agency of S o Paulo State, Brazil. Gaseous hydrogen is used to feed the reactor to promote hydrogenation … were reached. Safety recommendations to the gaseous hydrogen central were proposed to assure minimization of risk …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… of the transport parameters and solubility of hydrogen and its isotopes is an important issue which deal … activities were focused on the determination of hydrogen/deuterium transport parameters through Eurofer 97 in … 423+723K using a time dependant permeation technique The hydrogen permeation and diffusivity at room temperature and …
Last Updated Tue, 09/17/2024 - 00:37
Fuel Cell Codes and Standards
… addresses those vehicles under test using compressed hydrogen gas supplied by an off-board source or stored and … SAE 3202 Hybrid Road Vehicles Fueled by Compressed Gaseous Hydrogen …
Last Updated Wed, 04/01/2020 - 21:39
Bibliography Entry
… This paper is a discussion of a method for hydrogen leak classification. Leaks are classified as; gas … is further divided into two subclasses; total volume of hydrogen escaped and flow rate of escaping hydrogen. A method to aid in risk assessment determination in …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… The use of hydrocarbon-hydrogen mixtures has been proven to be a valuable system for … and the safe design of process equipment handling ethanol-hydrogen, the knowledge of safety parameters, such as maximum … work, the explosion behaviour of pure ethanol and ethanol-hydrogen/air mixtures is studied for different initial …
Last Updated Tue, 05/14/2024 - 20:45
Document Library
… PNNL’s Hydrogen Safety Program Why Hydrogen Fuel? Hydrogen – A Clean, Flexible Energy Carrier Why Fuel Cells? …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… and effective sensors for the accurate detection of hydrogen concentrations in air are essential for the safe operation of fuel cells, hydrogen fuelled systems (e.g. vehicles) and hydrogen production, distribution and storage facilities. The …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… CFD numerical simulations performed with FLACS Hydrogen, and Phoenics. For a constantflow rate release of hydrogen from a 284 bar storage unit through a 8.5 mm orifice … as a function of time andcompared to a free vertical hydrogen jet under identical release conditions. The results …
Last Updated Tue, 05/14/2024 - 23:13
FAQ
… piping code should be used for repair and alteration of hydrogen piping systems? … Repair and Alteration of Hydrogen Piping Systems (ASME B31) …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… product is exposed to a critical combination of diffusible hydrogen content, stresses and other metallurgical factors. … are usually defined, the proper control of the diffusible hydrogen content is the key parameter to improve the safety … governing the absorption and desorption of diffusible hydrogen in aluminized boron steels is investigated. The …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… biomass carbohydrates as a potential high-density hydrogen carrier is discussed here. Gravimetric density of … and starch) are less expensive based on GJ than are other hydrogen carriers, such as hydrocarbons, biodiesel, methanol, … and ammonia. Biotransformation of carbohydrates to hydrogen by cell-free synthetic (enzymatic) pathway …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… in preparation for production, distribution, and retail of hydrogen as a consumer energy source. In the present study, … the dimensional and radiative properties of an ignited hydrogen jet. These data are relevant to the safety scenario of a sudden leak in a high-pressure hydrogen containment vessel. Specifically, the data will …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… the expected impact on sustainability of processes for hydrogen production by steam reforming of natural gas. … of these processes. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved. … Sustainability assessment of hydrogen production by steam reforming …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… The use of hydrogen as an energy carrier is a real perspective in Europe … is to provide a set of totally new and well instrumented hydrogen - air vented explosions. Experiments were performed … chamber. Six concentration gauges were used to control the hydrogen repartition in the vessel. The hydrogen-air cloud …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… for the transport of pressurized gases, including gaseous hydrogen. In the majority of cases, these cylinders … perhaps in the hundreds. In emerging markets, such as hydrogen-powered industrial trucks, hydrogen fuel systems are expected to experience thousands of …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… Operation of a passive autocatalytic hydrogen recombiner (PAR) has been investigated by means of … is a self-active and self-adaptive device used to remove hydrogen from safety containments of light water nuclear … was found to improve mixing and mass transfer and increase hydrogen recombination rate for high gas flow rates. At low …
Last Updated Wed, 05/08/2024 - 21:31
FAQ
… but as a precaution, any material that could be exposed to liquid air must be compatible for both oxygen and cryogenic … formation due to failure of the insulation on a liquefied hydrogen system and what measures can be taken to minimize …
Last Updated Sat, 06/01/2024 - 01:44
Basic page
… conducted within the Department of Energy's (DOE's) Hydrogen Program should use a common set of financial and … spreadsheet contains standard assumptions to be used in hydrogen-related analyses, including 10% internal rate of return. Energy Price Assumptions Many analyses of hydrogen and fuel cells require feedstock and utility (e.g., …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… test was conducted on a 72.4-liter composite (Type HGV-4) hydrogen fuel tank at an initial hydrogen pressure of 34.3 MPa (ca 5000 psi). No Pressure … energy at the 35.7 MPa burst pressure. The resulting hydrogen fireball maximum diameter of 7.7 m is about 19%2less …
