... Abstract The feasibility study presents results of a hydrogen combustor integration for a Medium-Range aircraft engine using the Dry-Low-NO x Micromix combustion principle. Based on a simplified Airbus A320-type flight mission, a thermodynamic performance model of a kerosene and a hydrogen...

... Abstract Revolutionary developments are needed to drastically reduce emissions of aviation. Two promising approaches are hydrogen combustion and the water enhanced turbofan (WET). Heat exchangers are needed for both concepts. Whereas for hydrogen combustion, it is necessary to bring liquid...

... Abstract Aviation decarbonization is an essential step to contribute to reduce the CO 2 footprint and the impact on climate. Among the various possible avenues to fulfill this requirement, thermal-powered aircraft fueled with liquid hydrogen is considered in this paper. Considering the several...

... Abstract Hydrogen micromix combustion is a promising technology for achieving zero mission-level carbon emissions with ultra-low NOx potential. A reduced-order NOx emissions prediction model is essential for preliminary hydrogen engine cycle design space exploration and optimization studies...

... Abstract Hydrogen-compatible gas turbines are one way to decarbonize electricity production. However, burning and handling hydrogen is not trivial because of its high reactivity and tendency to detonate. Mandatory safety parameters, such as auto-ignition delay times, can be estimated thanks...

... Abstract This paper investigates 100%-hydrogen-fuel gas turbines as an enabler for renewable electric power. Intermittent renewables such as solar and wind raise grid problems and impose commercial power limits. Gas turbines running on 100% hydrogen can be the carbon-free grid-supporting...

... Abstract Hydrogen has immense potential as a future energy vector for power and propulsion applications. However there are several challenges, including flame stability, flashback and emissions, that impede its widespread use in modern energy systems. Hydrogen systems are required...

... to mitigate fossil fuel consumption while minimizing exhaust emissions. Ammonia (NH 3 ) is one of these candidates, as it has historically been shown to provide high energy potential and zero carbon emission (CO and CO 2 ) [2]. As a hydrogen (H 2 ) carrier, NH 3 serves as a possible solution to the U.S...

... architectural changes. The use of NH 3 /H 2 blends is a valued way to improve the flame stability, even though in some cases it is obtained to the detriment of the emission performances. However, there is still a lack of knowledge and experimental data on the use of ammonia and hydrogen-ammonia blends under...

... Abstract Hydrogen co-firing is increasingly being considered as a viable solution for the decarbonization of Gas Turbine Power Plants. Enabling this capability at existing natural gas-fired plants requires a hydrogen fuel system retrofit. Hydrogen has a higher propensity to leak and ignite when...

... Abstract The micromix combustion principle is a dry low NOx combustion concept for high hydrogen fuels in gas turbines. In the can-type combustor, where multiple micromix flames are arranged circumferentially, a rotational thermoacoustic oscillation mode has been found. The objective...

... and these measurements can significantly deviate from state-of-the-art models. Moreover, there is a lack of studies investigating the effect of hydrogen enrichment on the response of natural gas (NG) flames. In this work, measurements of flame transfer matrices (FTM) of turbulent H 2 /NG flames in an atmospheric...

... Abstract With air traffic expected to grow 5% annually until the year 2030, alternative fuels such as hydrogen are being investigated in order to tackle the current environmental crisis. Due to safety concerns, future hydrogen combustion chambers will require new designs of injection systems...

... Abstract Hydrogen continues to show significant promise as a zero-carbon energy carrier in the pursuit of global decarbonisation targets. Hydrogen has wide flammability limits which means it can operate at considerably leaner conditions for reduced NOx emissions. However, fuel-lean operation...

... Abstract Green hydrogen produced from water electrolysis is a promising carbon-free energy storage medium that, when blended with natural gas, can be transported in existing natural gas pipeline infrastructure, and utilized in associated power plants to reduce the carbon intensity of existing...

... Abstract The vision of a carbon-neutral world, implies the shift from fossil to clean fuels for combustion-driven processes and machines like gas turbines. Green hydrogen is a promising alternative to substitute natural gas and other fossil fuels. In the H2mGT project, funded by the German...

... Abstract A set of novel fuel injectors has been developed and manufactured for systematic evaluation of the combustion performance of hydrogen and hydrogen/natural gas mixtures. The test hardware is derived from lean direct injection concepts developed for low emissions aeroengines...

..., with a comparison provided. The corresponding differences in emission formation pathways were investigated, alongside high-speed OH* chemiluminescence to further elucidate findings. hydrogen combustion low-emission combustor turbulence fuel combustion Proceedings of ASME Turbo Expo 2023 Turbomachinery...

... Abstract Large eddy simulations (LES) were performed to develop an innovative hydrogen-fueled burner for aeronautic applications. Hydrogen is a much cleaner fuel than classic jet fuels (hydrocarbons) since its combustion with air only produces water without any carbon compounds (soot particles...

... Abstract Doosan, the Heavy-duty gas turbine OEM manufacturer, have been successfully achieving the progress of developing hydrogen gas turbine combustor. Considering the low hydrogen production rate, the safety of hydrogen flame, and above all, the connection with green hydrogen production...