Last Updated Tue, 05/14/2024 - 01:10
FAQ
… for most other fuels and need to be certified for use with hydrogen. They are commercially available, and NFPA 69 has a … arresters. Some companies and universities are working on hydrogen diffusion flame burners for turbines. The issue in this case is the stability of the hydrogen diffusion flame on the particular burner …
Last Updated Thu, 05/09/2024 - 00:52
FAQ
… The vent system for the excess hydrogen should be vented in accordance with NFPA 2 and CGA … CGA G-4.4. Please be extremely cautious with compressing hydrogen. NEC/NFPA 70 and its Articles 500/505 address … Please also consider the information in NFPA 2, Hydrogen Technologies Code. NFPA 2 has many prescriptive …
Last Updated Thu, 12/19/2024 - 21:55
FAQ
… point and that there are no pockets that can capture hydrogen (restrict flow to the exhaust inlet). Information on … repair garage approach is available at Toyota Mirai Hydrogen Fuel Cell EV- Repair Garage Design & Safety . CFD … could also be used to anticipate the flow of released hydrogen based on either natural or forced ventilation. … 830 …
Last Updated Wed, 05/08/2024 - 23:26
FAQ
… Explosion testing with hydrogen should be utilized only where there is not an … by personnel experienced in such testing. Testing with hydrogen is always a challenge and needs to be approached … due to significant differences in properties between hydrogen and propane. Hydrogen can develop significantly …
Last Updated Tue, 05/14/2024 - 01:09
FAQ
… The HSP discourages the use of this type of piping for hydrogen despite the low likelihood of ignition within the … produce an electrostatic discharge. Since the nominal hydrogen concentration is so high (and assuming the purge-in … exit if the polyethylene film extends to the exit. If the hydrogen is flowing into an air atmosphere, an electrostatic …
Last Updated Thu, 05/09/2024 - 00:45
FAQ
… A best practice, even for small hydrogen vents, is to vent to a dedicated vent system outside … their required standards are followed. In the U.S. NFPA 2, Hydrogen Technologies Code, has information in Section 13.3 … is lost. Increasing ventilation to dilute the venting hydrogen can be one method to resolve the situation, but …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… THE BEHAVIOR OF HYDROGEN-PEROXIDE IN THE CIRCUIT OF THE COOLING CHANNELS OF …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… Structure in Premixed Turbulent Combustion - Ii. Lean Hydrogen/air Bunsen Flames …
Last Updated Mon, 11/18/2024 - 13:38
Fuel Cell Codes and Standards
… of energy conversion efficiency and quantum yield for hydrogen production in the solar photocatalytic water …
Last Updated Sat, 11/23/2024 - 14:17
Fuel Cell Codes and Standards
… 34544-2017 Safety test methods for onboard low pressure hydrogen storage devices for small fuel cell vehicles …
Last Updated Wed, 05/08/2024 - 23:16
FAQ
… atmospheric pressure where the autoignition temperature of hydrogen is 585°C. … 864 … 770 … 814 … We are working on a project using hydrogen at 600 kPa (87 psi). How is the auto-ignition temperature of hydrogen as a function of pressure determined? … Auto-ignition …
Last Updated Tue, 05/14/2024 - 01:55
FAQ
… Regarding the concept of introducing hydrogen gas into natural gas pipelines, this is indeed a hot … driven by pressure cycling and potentially accelerated by hydrogen. Some analysis has shown that it can be acceptable to operate natural gas pipelines with a hydrogen blend. However, this is highly dependent upon the …
Last Updated Wed, 05/08/2024 - 23:33
FAQ
… published research on the effect of water sprays on hydrogen deflagrations and deflagration-to-detonation … et al. (Atomics International report, 1973) described hydrogen detonation tube testing with and without a … spray. They found the water spray prevented detonations at hydrogen concentrations of 20% to 24%, but not at 28%. Drop …
Last Updated Mon, 05/13/2024 - 23:11
FAQ
… for vent systems include the following: Design stacks for hydrogen fires at the vent stack outlets. Locate to assure no … (venturi effect). Vent outlet design should direct venting hydrogen to a safe direction meeting requirements for … each. Here is a list of codes and standards that address hydrogen vents: CGA G-5.4, Standard for Hydrogen Piping …
Last Updated Sat, 11/04/2017 - 04:27
Bibliography Entry
… COMPOSED OF PERTUSSIS TOXIN INACTIVATED BY HYDROGEN-PEROXIDE, IN 18-MONTH-OLD TO 23-MONTH-OLD CHILDREN …
Last Updated Tue, 09/17/2024 - 00:37
Fuel Cell Codes and Standards
… system of solar energy photocatalytic water splitting for hydrogen production …
Last Updated Mon, 05/13/2024 - 22:49
FAQ
… Because a small spark can ignite hydrogen-air mixtures, precautions such as using … systems should be properly purged and isolated from the hydrogen source prior to the start of work. In addition, the … ISO 15916 - Basic considerations for the safety of hydrogen systems States that: “the use of spark free tools is …
Last Updated Thu, 05/09/2024 - 04:40
FAQ
… include the HSP Best Practices online resource and the DOE Hydrogen Safety Training for Researchers, the AIChE Laboratory Safety Course . NFPA 2, Hydrogen Technologies Code, and NFPA 45, Standard on Fire … … 892 … Are there generic best practices for connecting hydrogen cylinders to research equipment? The project in …
Last Updated Sat, 11/23/2024 - 16:59
Fuel Cell Codes and Standards
… an aluminum liner for the on-board storage of compressed hydrogen as a fuel for land vehicles …
Last Updated Thu, 02/16/2023 - 01:35
FAQ
… involving a mixture of flammable gases, including hydrogen. … 808 … 859 … 816 … 843 … Are you aware of any company using foam and mesh technology to help prevent hydrogen explosions? … Testing – Explosion Prevention …
