Effect of diluent gas on propagation and explosion characteristics of hydrogen-rich syngas laminar premixed flame

Zhang, Guopeng; Li, Guo-Xiu; Li, Hong‐Meng; Lv, Jiacheng

doi:10.1016/j.energy.2022.123370

Cited by 23 publications

(4 citation statements)

References 66 publications

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“…This could be the explanation for a weak dependency of the laminar burning velocity on initial pressure. Li et al , and Zhang et al investigated the dilution effect on the laminar burning velocity of syngas premixed flames, and a similar behavior about the dilution effect of CO 2 and N 2 was observed. For a given dilution, the laminar burning velocity under CO 2 dilution was lower than that under N 2 dilution.…”

Section: Resultssupporting

confidence: 87%

“…33,39−41 A weak dependence of initial pressure on the laminar burning velocity was observed for H 2 −N 2 O mixtures by Bane et al, 23 who investigated both experimentally and numerically the propagation of explosion in these mixtures and by Razus et al, 42 This could be the explanation for a weak dependency of the laminar burning velocity on initial pressure. Li et al 43,44 and Zhang et al 45 investigated the dilution effect on the laminar burning velocity of syngas premixed flames, and a similar behavior about the dilution effect of CO 2 and N 2 was observed. For a given dilution, the laminar burning velocity under CO 2 dilution was lower than that under N 2 dilution.…”

Section: Laminar Burning Velocitysupporting

confidence: 83%

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Propagation Characteristics of Stoichiometric Inert-Diluted Methane–N₂O Flames

Giurcan

Mitu

Movileanu

et al. 2022

Ind. Eng. Chem. Res.

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In this study, the laminar burning velocities of stoichiometric methane− nitrous oxide mixtures diluted with 50 vol % single inert (inert: argon, helium, or carbon dioxide) were determined from pressure−time records obtained in a spherical vessel centrally ignited, using a correlation based on the cubic law of pressure rise. The present experimental burning velocities are compared with literature data on stoichiometric methane−nitrous oxide mixtures diluted with nitrogen and with the calculated laminar burning velocities obtained by numerical modeling of their premixed flames. The computation was performed with the COSILAB package using the GRI 3.0 mechanism. Both data sets were used for examining the influence of initial pressure (0.5−1.75 bar) of stoichiometric inert-diluted methane−nitrous oxide mixtures on laminar burning velocities, maximum flame temperatures, heat release rates, and peak concentrations of main reaction intermediates. The baric coefficients of laminar burning velocities and overall reaction orders of methane oxidation with nitrous oxide were determined.

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Section: Resultssupporting

confidence: 87%

Section: Laminar Burning Velocitysupporting

confidence: 83%

Propagation Characteristics of Stoichiometric Inert-Diluted Methane–N₂O Flames

Giurcan

Mitu

Movileanu

et al. 2022

Ind. Eng. Chem. Res.

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“…Therefore, the research of turbulent premixed combustion is very important for the clean and efficient utilization of fossil fuels and for the design and development of industrial burners. [10][11][12][13][14] The research on the propagation properties of turbulent premixed flame is also the focus many scholars' works. [15,16] The common experimental devices of turbulent premixed flame are jet burners, [17][18][19] constant volume burners, [20][21][22] swirl burners, [23,24] and hedge flame burners.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Turbulence and Diffusional–Thermal Instability on Hydrogen‐Rich Syngas Turbulent Premixed Flame

Zhang,

Li,

et al. 2023

Energy Tech

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As a kind of fuel with low‐carbon emissions, hydrogen‐rich syngas has a large resource potential and is a promising alternative energy resource. A series of experiments in a constant volume combustion bomb are carried out to investigate the effects of turbulence and diffusional–thermal (DT) instability on a hydrogen‐rich syngas turbulent premixed flame. The flow field in the constant volume combustion bomb is calibrated, and the turbulent flow field's homogeneity and isotropy were investigated. The effects of different speeds of fan (1366–4273 rpm), hydrogen fractions (55%–95%), pressures (1.0–3.0 bar), and equivalence ratios (0.6–1.0) on the hydrogen‐rich syngas turbulent premixed flame are studied. According to the analyses, the flow field in the experimental device exhibits good homogeneous and isotropic characteristics. With the increase of turbulence intensity, equivalence ratio, hydrogen fraction, or pressure, the turbulent flame propagation speed increases gradually. As the hydrogen fraction increases or the equivalence ratio decreases, the effective Lewis number decreases, and the effect of DT instability on the flame increases. The research in this article is crucial for the clean and efficient utilization of hydrogen‐rich syngas and the design of related burners.

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Deflagration characteristics of N2 diluted propanal/air mixtures at elevated pressures

Wang,

Yu,

Yan

et al. 2024

Combustion and Flame

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Effect of diluent gas on propagation and explosion characteristics of hydrogen-rich syngas laminar premixed flame

Cited by 23 publications

References 66 publications

Propagation Characteristics of Stoichiometric Inert-Diluted Methane–N₂O Flames

Propagation Characteristics of Stoichiometric Inert-Diluted Methane–N₂O Flames

Effect of Turbulence and Diffusional–Thermal Instability on Hydrogen‐Rich Syngas Turbulent Premixed Flame

Deflagration characteristics of N2 diluted propanal/air mixtures at elevated pressures

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Effect of diluent gas on propagation and explosion characteristics of hydrogen-rich syngas laminar premixed flame

Cited by 23 publications

References 66 publications

Propagation Characteristics of Stoichiometric Inert-Diluted Methane–N2O Flames

Propagation Characteristics of Stoichiometric Inert-Diluted Methane–N2O Flames

Effect of Turbulence and Diffusional–Thermal Instability on Hydrogen‐Rich Syngas Turbulent Premixed Flame

Deflagration characteristics of N2 diluted propanal/air mixtures at elevated pressures

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Propagation Characteristics of Stoichiometric Inert-Diluted Methane–N₂O Flames

Propagation Characteristics of Stoichiometric Inert-Diluted Methane–N₂O Flames