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 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
… 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 Fri, 05/24/2024 - 23:46
Bibliography Entry
… of numerical simulations with release and ignition of hydrogen. The objective of this work was to re-investigate … in Norway in 1985 with modern CFD tools. The severe hydrogen-air explosion led to two fatalities and complete … code has in the recent years been validated in the area of hydrogen dispersion and explosions. The factory building was …
Last Updated Wed, 12/13/2023 - 19:28
Fuel Cell Codes and Standards
… than conventional gasoline internal combustion engines. Hydrogen vehicles including Fuel Cell Vehicles (FCVs) … to address the potential consequences associated with hydrogen vehicle incidents and suggest common procedures to … addressing comments to posted draft. … SAE J2990/1 Hydrogen and Fuel Cell Vehicle First and Second Responder …
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 …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… This paper describes a large eddy simulation model of hydrogen spontaneous ignition in a T-shaped channel filled … et al. (2010). The eddy dissipation concept with a full hydrogen oxidation in air scheme is applied as a sub-grid … Simulation results are compared against test data on hydrogen release into a T-shaped channel at pressure 1.2-2.9 …
Last Updated Fri, 05/31/2024 - 05:09
Calculator Tools
… 1.0 Lower Heating Value: Btu Higher Heating Value: Btu … Hydrogen Heating Values on Mass Basis …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… Hydrogen fuels are being deployed around the world as an … are a necessary component of the safe deployment of hydrogen technologies. There has been a focused effort in the international hydrogen community to develop codes and standards based on …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… project analyzes the current state of public acceptance in hydrogen technology in the mobility sector. This paper … almost 80%2of the Germans are in favor of introducing hydrogen vehicles. But from the perspective of the general public, it is important that hydrogen is produced in an environmentally friendly way. …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… been performed in order to study the consequences of a hydrogen release from a pressure swing adsorption … at 30 barg. The simulations were performed using FLACS-Hydrogen software from GexCon. The impact of obstruction, … of the time to ignition. Crown Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… growth of installed DG is the ever-increasing interest in hydrogen as an alternative fuel to natural gas. As a hydrogen infrastructure is developed, a desire to use this … in the present work. To evaluate the potential role for hydrogen fired MTGs in this paradigm, understanding of what …
Last Updated Tue, 03/03/2020 - 18:13
Bibliography Entry
… The Chrysler Pentastar Electronics, Inc. Direct Hydrogen Fueled PEM Fuel Cell Hybrid Vehicle Program (DPHV) … mission,{open_quotes}Design, fabricate, and test a Direct Hydrogen Fueled Proton Exchange Membrane (PEM) Fuel Cell System including onboard hydrogen storage, an efficient lightweight fuel cell, a gas …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… In the summer of 1985 a severe hydrogen-air explosion occurred in an ammonia plant in … building. The pump was feeding water to a vesselcontaining hydrogen gas at pressure of 30 bars. This pressure caused a … through thepump and out through the failed gasket. The hydrogen reached the leakage point after about 3 minutes. …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… The paper presents CFD simulations of high pressure hydrogen release and dispersion inside thestorage room of realistic hydrogen refueling station and comparison to experimental … were also investigated by presenting the predicted hydrogen concentration field.Finally, the effects of release …
Last Updated Thu, 05/30/2024 - 03:04
Basic page
… Key: = No Ignition = Explosion = Fire Hydrogen Incident Summaries by Equipment and Primary … Detection Emergency Shutdown Response Other or Unknown Hydrogen Gas Metal Cylinder or Regulator 3/31/2012 … 6/10/2007 8/21/2008 1/15/2019 10/5/2009 8/21/2008 Liquid Hydrogen Tank or Delivery Truck 4/27/1989 12/19/2004 …
Last Updated Thu, 05/30/2024 - 22:30
Best Practice
… Chemical Storage The term "chemical hydrogen storage" is used to describe storage technologies in … reactants, byproducts, and potential compounds formed in liquid, solid, and gaseous states and take appropriate … if a cold trap is used, caution should be exercised when liquid nitrogen is used in the cold trap for distilling B-H …
Last Updated Fri, 05/24/2024 - 23:46
Bibliography Entry
… in FLACS may therefore be important to ensure efficiency. Hydrogen flames may be invisible, will generate no soot and … The development of efficient and precise CFD-tools for hydrogen fires is therefore important. In this paper the new … and validity of the new fire models. … 1085 … Modelling of Hydrogen Jet Fires Using CFD …
