Experimental investigation and modeling of boundary layer flashback for non-swirling premixed hydrogen/ammonia/air flames

Goldmann, Andreas; Dinkelacker, Friedrich

doi:10.1016/j.combustflame.2020.12.021

Cited by 27 publications

(5 citation statements)

References 53 publications

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“…IDT is an important parameter for the validation of a chemical kinetic mechanism. Moreover, the LBV is a key parameter for the assessment of the fuel's tendency for flashbacks, as recently shown by Goldmann et al [23].…”

Section: Introductionmentioning

confidence: 85%

Kinetic Modeling Study on the Combustion Characterization of Synthetic C3 and C4 Alcohols for Lean Premixed Prevaporized Combustion

et al. 2021

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To reach sustainable aviation, one approach is to use electro-fuels (e-fuels) within the gas turbine engines. E-fuels are CO2-neutral synthetic fuels which are produced employing electrical energy generated from renewable resources, where the carbon is taken out of the atmosphere or from biomass. Our approach is, to find e-fuels, which can be utilized in the lean premixed prevaporized (LPP) combustion, where most of the non-CO2 emissions are prevented. One of the suitable e-fuel classes is alcohols with a low number of carbons. In this work, the autoignition properties of propanol isomers and butanol isomers as e-fuels were investigated in a high-pressure shock tube (HPST) at temperatures from 1200 to 1500 K, the pressure of 10 bar, and lean fuel-air conditions. Additional investigations on the low-temperature oxidation and flame speed of C3 and C4 alcohols from the literature were employed to develop a comprehensive mechanism for the prediction of ignition delay time (IDT) and laminar burning velocity (LBV) of the above-mentioned fuels. A numerical model based on newly developed chemical kinetics was applied to further study the IDT and LBV of fuels in comparison to the Jet-A surrogate at the engine-related conditions along with the emissions prediction of the model at lean fuel-air conditions.

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Section: Introductionmentioning

confidence: 85%

Kinetic Modeling Study on the Combustion Characterization of Synthetic C3 and C4 Alcohols for Lean Premixed Prevaporized Combustion

et al. 2021

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“…In addition, NO x emission of an ammonia flame is also sensitive to heat losses and the fuel/air residence time, which are both related to chemical kinetics of ammonia oxidation and NO x formation and consumption. ,− Okafor et al evaluated the effects of the residence time and combustion chamber wall heat loss . They found that constraining wall heat loss or extending the residence time of reactants in the primary combustion zone was necessary for efficient control of NH 3 and N 2 O emissions in two-stage, rich-lean ammonia combustors.…”

Section: Development Of No X Abatement Technologiesmentioning

confidence: 99%

NO_x Emission and Control in Ammonia Combustion: State-of-the-Art Review and Future Perspectives

Zhu,

Du,

et al. 2023

Energy Fuels

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Global warming as a result of greenhouse gas emissions generated by anthropogenic activities (mainly the combustion of fossil fuels) has become an increasingly more severe challenge for all mankind. As a promising zero-carbon energy carrier toward the transition to a carbon-neutral society, ammonia has drawn broad attention from academia, industry, and government bodies. However, widespread applications of ammonia as a primary fuel in combustion devices require solutions for multiple technical challenges, among which the possibly very high nitrogen oxide (NO x ) emission in the flue gas is the most concerned one. In this regard, extensive research efforts have been devoted over recent years to a deep understanding of the NO x formation mechanisms, which, in turn, result in a number of NO x -inhibiting technologies successfully developed; these include staged combustion, ultra-lean combustion, moderate or intense low oxygen dilution combustion, plasma-assisted combustion, etc. In this review, a brief literature review has been performed on NO x emission from ammonia flames, with the emphasis put on discussions of advances in understanding chemical kinetics related to NO x formation and reduction, effective technologies for NO x abatement, and applications of these technologies in practical ammonia-fired combustion devices. This review can serve as a reference for future studies on NO x emission and control in ammonia flames and the promotion of ammonia as a zero-carbon fuel in practical applications.

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“…The study quantified the concept of a safety allowance to preserve the performance of the domestic burner. Even though there are experimental and numerical studies to understand and solve the flashback phenomenon [88][89][90][91][92][93][94][95][96][97][98], these studies are focused on large-scale and high-pressure burners, which highlights the need for studies on domestic burners. For instance, Vance, Goey, and Oijen [98] numerically studied the flashback limits of slit burners.…”

Section: Direct Hydrogen Combustion Cookermentioning

confidence: 99%

Hydrogen for Cooking: A Review of Cooking Technologies, Renewable Hydrogen Systems and Techno-Economics

Mukelabai

Wijayantha²,

Blanchard³

2022

Sustainability

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About 3 billion people use conventional carbon-based fuels such as wood, charcoal, and animal dung for their daily cooking needs. Cooking with biomass causes deforestation and habitat loss, emissions of greenhouse gases, and smoke pollution that affects people’s health and well-being. Hydrogen can play a role in enabling clean and safe cooking by reducing household air pollution and reducing greenhouse gas emissions. This first-of-a-kind review study on cooking with hydrogen assessed existing cooking technologies and hydrogen systems in developing country contexts. Our critical assessment also included the modelling and experimental studies on hydrogen. Renewable hydrogen systems and their adoptability in developing countries were analysed. Finally, we presented a scenario for hydrogen production pathways in developing countries. Our findings indicated that hydrogen is attractive and can be safely used as a cooking fuel. However, radical and disruptive models are necessary to transform the traditional cooking landscape. There is a need to develop global south-based hydrogen models that emphasize adoptability and capture the challenges in developing countries. In addition, the techno-economic assumptions of the models vary significantly, leading to a wide-ranging levelized cost of electricity. This finding underscored the necessity to use comprehensive techno-economic assumptions that can accurately predict hydrogen costs.

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Experimental investigation and modeling of boundary layer flashback for non-swirling premixed hydrogen/ammonia/air flames

Cited by 27 publications

References 53 publications

Kinetic Modeling Study on the Combustion Characterization of Synthetic C3 and C4 Alcohols for Lean Premixed Prevaporized Combustion

Kinetic Modeling Study on the Combustion Characterization of Synthetic C3 and C4 Alcohols for Lean Premixed Prevaporized Combustion

NO_x Emission and Control in Ammonia Combustion: State-of-the-Art Review and Future Perspectives

Hydrogen for Cooking: A Review of Cooking Technologies, Renewable Hydrogen Systems and Techno-Economics

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Experimental investigation and modeling of boundary layer flashback for non-swirling premixed hydrogen/ammonia/air flames

Cited by 27 publications

References 53 publications

Kinetic Modeling Study on the Combustion Characterization of Synthetic C3 and C4 Alcohols for Lean Premixed Prevaporized Combustion

Kinetic Modeling Study on the Combustion Characterization of Synthetic C3 and C4 Alcohols for Lean Premixed Prevaporized Combustion

NOx Emission and Control in Ammonia Combustion: State-of-the-Art Review and Future Perspectives

Hydrogen for Cooking: A Review of Cooking Technologies, Renewable Hydrogen Systems and Techno-Economics

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NO_x Emission and Control in Ammonia Combustion: State-of-the-Art Review and Future Perspectives