Results 11 to 20 of about 31,928 (260)

Combustion characteristics of hydrogen in a noble gas compression ignition engine

Energy Reports, 2021
Hydrogen eliminates carbon emissions from compression ignition (CI) engines, while noble gases eliminate nitrogen oxide (NOx) emissions by replacing nitrogen. Noble gases can increase the in-cylinder temperature during the compression stroke due to their
Norhidayah Mat Taib, Mohd Radzi Abu Mansor, Wan Mohd Faizal Wan Mahmood   +2 more
doaj   +1 more source

Scenarios of combustion of plane hydrogen microjets at sub- and supersonic velocities [PDF]

E3S Web of Conferences, 2023
Experimental data on diffusion combustion of plane hydrogen microjets emanating from a slotted micronozzle at subsonic and supersonic velocities are reported. Four scenarios of diffusion combustion of the hydrogen microjets are presented.
Katasonov Mikhail, Kozlov Victor, Litvinenko Yury, Shmakov Andrey   +3 more
doaj   +1 more source

Computational Fluid Dynamics Model for Analysis of the Turbulent Limits of Hydrogen Combustion

Fluids, 2022
This paper presents a novel numerical approach for assessing the turbulent limits of hydrogen combustion. In the framework of this approach, the premixed combustion is studied numerically in the externally generated turbulent field with defined ...
Ivan Yakovenko, Alexey Kiverin, Ksenia Melnikova   +2 more
doaj   +1 more source

A zero emission internal combustion engine with hydrogen/oxygen combustion for stationary energy storage applications [PDF]

E3S Web of Conferences
Renewable energies are considered a potential way to reduce the greenhouse gas emissions of the power supply system. To improve the baseload operation capability of a power supply system based on renewable energies hydrogen as energy storage for ...
Link Thomas, Haller Johannes, Rahtje Rio
doaj   +1 more source

The Impact of Hydrogen Admixture into Natural Gas on Residential and Commercial Gas Appliances

Energies, 2022
Hydrogen as a carbon-free fuel is commonly expected to play a major role in future energy supply, e.g., as an admixture gas in natural gas grids.
Jörg Leicher, Johannes Schaffert, Hristina Cigarida, Eren Tali, Frank Burmeister, Anne Giese, Rolf Albus, Klaus Görner, Stéphane Carpentier, Patrick Milin, Jean Schweitzer   +10 more
doaj   +1 more source

Physical and Chemical Features of Hydrogen Combustion and Their Influence on the Characteristics of Gas Turbine Combustion Chambers

Applied Sciences, 2023
Hydrogen plays a key role in the transition to a carbon-free economy. Substitution of hydrocarbon fuel with hydrogen in gas turbine engines and power plants is an area of growing interest.
Elena Anatolievna Shchepakina, Ivan Alexandrovich Zubrilin, Alexey Yurievich Kuznetsov, Konstantin Dmitrievich Tsapenkov, Dmitry Vladimirovich Antonov, Pavel Alexandrovich Strizhak, Denis Vladimirovich Yakushkin, Alexander Gennadievich Ulitichev, Vladimir Alexandrovich Dolinskiy, Mario Hernandez Morales   +9 more
doaj   +1 more source

Effects of ammonia addition on the soot nanostructure and oxidation reactivity in n-heptane/toluene diffusion flames

Fuel Processing Technology
Co-firing NH3 with conventional hydrocarbon fuels is an important approach for reducing CO2 emissions in existing combustion systems. Besides CO2, the blending of NH3 would also notably affect soot formation and its oxidation behaviors.
Qing Li, Bo Tian, Lei Xu, Yu Wang
doaj   +1 more source

Unsteady Combustion of the Heptane-in-Water Emulsion Foamed with Hydrogen–Oxygen Mixture

Applied Sciences, 2023
This research paper numerically studies how hydrocarbon additives affect hydrogen combustion in the process of complex fuel burning on the example of the combustible foam representing the heptane-in-water emulsion foamed with a hydrogen–oxygen mixture ...
Alexey Kiverin, Ivan Yakovenko
doaj   +1 more source

Hydrogen energy share threshold for stable ultra-lean combustion in hydrogen–gasoline spark-ignition engines

Fuel Processing Technology
Hydrogen enrichment of gasoline in spark-ignition engines represents a promising pathway for improving combustion stability and extending lean-burn operating limits while reducing harmful emissions. However, the quantitative relationship between hydrogen
Michal Puškár, Melichar Kopas
doaj   +1 more source

Hydrogen Combustion

Tobruk University Journal of Engineering Sciences
 The significant and steadily increasing consumption of non-renewable energy driven by daily human activities has contributed to the fossil fuel crisis observed in recent decades. Growing concerns regarding emissions from internal combustion engines are also motivating the search for alternative energy sources to either replace or reduce reliance on ...
A M Shakorfow, A. H. Mohamed
openaire   +1 more source