Development and integration of a scalable low NOx combustion chamber for a hydrogen-fueled aerogas turbine

Boerner, Susan; Funke, H. H.-W.; Hendrick, Patrick; Recker, E.; Elsing, R.

doi:10.1051/eucass/201304357

Cited by 11 publications

(4 citation statements)

References 11 publications

(11 reference statements)

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“…To promote both low NOx hydrogen combustion and limited flashback risks, new generations of hydrogen injection schemes are developed, as for example technologies based on micromix burners in which miniaturized hydrogen jets are injected into air cross-flows through small air guiding panels [6]. However, these disruptive injection systems require substantial modifications of the combustion chamber architecture that is generally optimized for swirled burners [7].…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis and theoretical lift-off criterion for H2/air flames stabilized on a dual swirl injector

Marragou

Magnes

Aniello

et al. 2023

Proceedings of the Combustion Institute

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Section: Introductionmentioning

confidence: 99%

Experimental analysis and theoretical lift-off criterion for H2/air flames stabilized on a dual swirl injector

Marragou

Magnes

Aniello

et al. 2023

Proceedings of the Combustion Institute

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“…A novel metering valve architecture for aircraft fuelled with hydrogen was proposed and experimentally tested in [36,37]. The opening degree of this modulating valve was adjusted by changing the stem position of a hydraulic cylinder, as shown in Fig.…”

Section: Fuel Meteringmentioning

confidence: 99%

“…4. Novel metering valve architecture for hydrogen-fuelled gas turbines proposed in [36,37] The Cryoplane project proposed to use direct rotary valves without external shaft providing minimum leakage, precision, but with high complexity of electronics [8]. In this regard, the control of the fuel flow rate in metering valves could be complex given the compressibility of the gaseous hydrogen.…”

Section: Fuel Meteringmentioning

confidence: 99%

Fuels systems and components for future airliners fuelled with liquid hydrogen

Tamburrano

Romagnuolo

Frosina

et al. 2022

J. Phys.: Conf. Ser.

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The prospect of using liquid hydrogen as fuel in airliners in place of kerosene-based fuels is regarded as one of the most effective solutions to achieve low-carbon air transport in the near future, which is a target defined by the EU to reduce global warming caused by CO2 emissions. The development of hydrogen-fuelled airliners must face issues related to the production and supply chain of green hydrogen, to the fuel systems for hydrogen handling aboard aircraft, and to the combustion of hydrogen. This paper is concerned with the literature study of fuel systems for hydrogen, keeping in mind that the other two aspects are currently being studied extensively in industries and universities. This paper analyses difficulties, proposals and advances related to the four main parts composing future fuel systems for hydrogen-fuelled airliners: fuel storage, fuel delivery, thermal management and fuel metering.

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“…However, operation above 85% H 2 resulted in flashback issues using that particular swirl geometry under those conditions. Other measures taken to address these challenges in H 2 flames include non-premixed operation such as micromixing [9], high-momentum jets (e.g. FLOX) [10], or sequential combustion (e.g.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Kinetic Evaluation of Pressurized Lean Premixed Hydrogen-Air Flame Stability With Carbon Dioxide and Steam Dilution

Runyon

Pugh

Giles

et al. 2020

Volume 4B: Combustion, Fuels, and Emissions

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A study has been undertaken to experimentally and numerically evaluate the use of carbon dioxide or steam as premixed fuel additive in hydrogen-air flames to aid in the development of lean premixed (LPM) swirl burner technology for low NOx operation. Chemical kinetics modelling indicates that the use of CO2 or steam in the premixed reactants reduces H2-air laminar flame speed and adiabatic flame temperature within the well-characterized range of preheated LPM methane-air flames, albeit in markedly different proportions; for example, nearly 65 %vol CO2 as a proportion of the fuel is required for a reduction in laminar flame speed to equivalent CH4-air values, while approximately 30 %vol CO2 in the fuel is required for an equivalent reduction in adiabatic flame temperature, significantly impacted by the increased heat capacity of CO2. The 2nd generation high-pressure generic swirl burner, designed for use with LPM CH4-air, was therefore utilized to experimentally investigate the influence of CO2 and steam dilution on pressurized (up to 250 kW/MPa), preheated (up to 573 K), LPM H2-air flame stability using high-speed OH* chemiluminescence. In addition, exhaust gas emissions, such as NOx and CO, have been measured in comparison with equivalent thermal power conditions for CH4-air flames, showing that low NOx operation can be achieved. Furthermore, pure LPM H2-air flames are characterized for the first time in this burner, stabilized at low equivalence ratio (approximately 0.24) and increased Reynolds number at atmospheric pressure compared to the stable CH4-air flame (equivalence ratio of 0.55). The influence of extinction strain rate is suggested to characterize, both experimentally and numerically, the observed lean flame behavior, in particular as extinction strain rate has been shown to be non-monotonic with pressure for highly-reactive and diffuse fuels such as hydrogen.

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Development and integration of a scalable low NOx combustion chamber for a hydrogen-fueled aerogas turbine

Cited by 11 publications

References 11 publications

Experimental analysis and theoretical lift-off criterion for H2/air flames stabilized on a dual swirl injector

Experimental analysis and theoretical lift-off criterion for H2/air flames stabilized on a dual swirl injector

Fuels systems and components for future airliners fuelled with liquid hydrogen

Experimental and Kinetic Evaluation of Pressurized Lean Premixed Hydrogen-Air Flame Stability With Carbon Dioxide and Steam Dilution

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