Results 1 to 10 of about 37,718 (119)

Investigation of the operational and combustion performance of in-service gas cooktops fueled by hydrogen-enriched natural gas [PDF]

Scientific Reports
Injecting hydrogen into natural gas pipelines is regarded as a cost-effective and practical pathway toward a low-carbon energy future. As the most widely used domestic gas appliance, the operational performance and safety of cooktops are essential.
Mingyuan Yuan, Xiaomei Huang, Yitong Xie, Mengxiao Sun, Mingxiao Tang, Haidong Xu, Jinzhi Wang, Fengwen Pan   +7 more
doaj   +2 more sources

Experimental study on the effect of hydrogen addition on methane/ethylene diffusion flame soot formation based on light extinction measurement

Energy Reports, 2021
In this study, the mixed diffusion flame soot of methane, ethylene and hydrogen were studied, and the two-dimensional light extinction measurement was applied to investigate the distribution characteristics of the ethylene flame soot concentration with ...
Yuhan Zhu, Jiajia Wu, Bencheng Zhu, Yang Wang, Mingyan Gu   +4 more
doaj   +1 more source

Numerical simulation of methane-hydrogen premixed flames on a Bunsen burner

Journal of Thermal Science and Technology, 2022
Two-dimensional axisymmetric numerical simulations were performed for a Bunsen flame to investigate the OH concentration and heat release rate of methane-hydrogen premixed flames.
Tatsuya MORIYAMA, Kazuhiro YAMAMOTO
doaj   +1 more source

The effects of addition of carbon dioxide and water vapor on the dynamic behavior of spherically expanding hydrogen/air premixed flames

Journal of Thermal Science and Technology, 2021
Utilizing efficiently and securely hydrogen as clean energy source, it is required not only to analyze the experimental data under a certain condition but also to create the mathematical model for the prediction of flame propagation velocity under ...
Toshiyuki KATSUMI, Yasuhito YOSHIDA, Ryo NAKAGAWA, Shinya YAZAWA, Masashi KUMADA, Daisuke SATO, Thwe Thwe Aung, Nabiha CHAUMEIX, Satoshi KADOWAKI   +8 more
doaj   +1 more source

Effect of hydrogen addition on combustion and thermal characteristics of impinging non-premixed jet flames for various heating value gases

Case Studies in Thermal Engineering, 2023
This study experimentally investigates the effect of hydrogen addition on combustion and thermal characteristics of impinging non-premixed jet flames for low-heating values gases (LHVGs).
Hyeon Taek Nam, Seungro Lee, Heejung Jung   +2 more
doaj   +1 more source

The effects of hydrogen addition on the chemical kinetics of hydrogen-hydrocarbon flames: A computational study

South African Journal of Chemical Engineering, 2020
In this paper, the effects of hydrogen addition on the chemical kinetics of hydrogen–hydrocarbon flames were investigated numerically. Profiles of maximum OH, O and H radical mole fractions, flame temperature and emission levels of hydrogen-methane ...
Zine labidine Messaoudani, Mahar Diana Hamid, Che Rosmani Che Hassan, Yajue WU   +3 more
doaj   +1 more source

Dynamic behavior and flame acceleration of spherically expanding hydrogen flames under the low-pressure conditions

Nihon Kikai Gakkai ronbunshu, 2023
To investigate the dynamic behavior and flame acceleration of spherically expanding hydrogen flames under the low-pressure conditions, the deflagration experiments were conducted in a closed combustion chamber. The dynamic behavior of hydrogen flames was
Toshiyuki KATSUMI, Shinya YAZAWA, Masashi KUMADA, Daisuke SATO, Satoshi KADOWAKI   +4 more
doaj   +1 more source

The Formation of a Flame Front in a Hydrogen–Air Mixture during Spark Ignition in a Semi-Open Channel with a Porous Coating

Fire, 2023
An experimental study of ignition and flame front propagation during spark initiation in a hydrogen–air mixture in a semi-open channel with a porous coating is reported.
Sergey Golovastov, Grigory Bivol, Fyodor Kuleshov, Victor Golub   +3 more
doaj   +1 more source

Dynamic behavior and flame acceleration of outwardly expanding flame in hydrogen-air mixture

Nihon Kikai Gakkai ronbunshu, 2016
From the perspective of safety, it is necessary to assess the risk of hydrogen-air deflagration accurately. Especially, flame propagation velocity is one of the most important factors.
Toshiyuki KATSUMI, Hironori KOBAYASHI, Takuro AIDA, Satoshi KADOWAKI   +3 more
doaj   +1 more source

Swirl Flame Stability for Hydrogen-Enhanced LPG Combustion in a Low-Swirl Burner: Experimental Investigation

Applied Sciences
Recent progress in hydrogen combustion indicates that hydrogen could partially or fully replace traditional fuels in power plants, but maintaining stable flames remains a major challenge for many combustion systems.
Abdulrahman E. J. Alhamd, Abdulrazzak Akroot, Hasanain A. Abdul Wahhab   +2 more
doaj   +1 more source