Study on the laminar combustion characteristics and kinetic of IC8H18/NH3 premixed flames

Liu, Zechang; He, Xu; Jiang, Zhenghui; Feng, Guangyuan; Zhao, Chengyuan; Yang, Qing

doi:10.1016/j.fuel.2023.129633

Cited by 15 publications

(1 citation statement)

References 70 publications

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“…At room temperature and atmospheric pressure, the peak value of S L of NH 3 /C 3 H 8 /air mixture can reach 28.5 cm/s when the equivalence ratio varies. Liu et al 18 revealed that the S L of the isooctane (IC 8 H 18 )/NH 3 /air mixture exhibits a proportional relationship with the NH 3 content, wherein it decreases as the NH 3 concentration increases. The combustion characteristics of ternary fuels H 2 /NH 3 /CH 4 /air were investigated by Yasiry et al, 19 revealing that an increase in the H 2 content leads to an enhancement in the S L of the mixture, whereas an increase in the NH 3 content results in a reduction of S L .…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Wen,

Zhu,

Zeng

et al. 2024

Energy Fuels

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Blending syngas with ammonia (NH3) effectively overcomes the high minimum ignition energy and low laminar burning velocity (S L) of NH3, facilitating the realistic application of NH3 as a fuel for gas turbines. Thus, the present study combines experiments and numerical simulations to investigate the impacts of diluent N2 (0–60%) and NH3 (25–50%) on NH3/syngas/air flames. The analysis suggests that increasing N2 and NH3 content, respectively, results in a decrease in the S L of the mixture. At Φ = 1.0, as the N2 content increases from 0 to 60%, the S L of the mixture decreases from 80.1 to 28.3 cm/s. The S L decreases from 80.1 to 36.4 cm/s as the NH3 content increases from 25 to 50%. The increase in N2 content decreases the maximum mole fractions of H, OH, and O radicals, and the net reaction rates of chain reactions also decrease. The net reaction rate of H + O2 = O + OH at Z N2 = 60% decreases by 85.8% compared to 0.018 (mol/cm3 s) at Z N2 = 0% at Φ = 1.0. As NH3 content increases, the impact of chain reactions associated with the NH3 reaction mechanism on the combustion process becomes more pronounced. With the increase in NH3 content, the ratio of chemical effect to physical effect initially increases and then decreases, reaching a maximum value of 25.4% around Z NH3 = 30%. This value is much less than 1, indicating an overall inhibitory effect. The analysis of reaction pathways and NO emissions suggests that the presence of N2 reduces NH3 consumption, which in turn reduces NO generation. The increase in NH3 content promotes the conversion of N2O to N2, simultaneously reducing NO emissions.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Wen,

Zhu,

Zeng

et al. 2024

Energy Fuels

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Combustion and emission characteristics of a spark ignition engine fueled with ammonia/gasoline and pure ammonia

Liu,

Lin,

et al. 2024

Applied Energy

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Visualization of ammonia-methanol solution combustion under spark and passive jet ignition mode in an optically-accessible engine

Zhang,

Mao,

et al. 2024

Energy

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Study on the laminar combustion characteristics and kinetic of IC8H18/NH3 premixed flames

Cited by 15 publications

References 70 publications

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Combustion and emission characteristics of a spark ignition engine fueled with ammonia/gasoline and pure ammonia

Visualization of ammonia-methanol solution combustion under spark and passive jet ignition mode in an optically-accessible engine

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Study on the laminar combustion characteristics and kinetic of IC8H18/NH3 premixed flames

Cited by 15 publications

References 70 publications

Experimental and Numerical Study on the Effects of N2 and NH3 in NH3/Syngas/Air Laminar Premixed Flame

Experimental and Numerical Study on the Effects of N2 and NH3 in NH3/Syngas/Air Laminar Premixed Flame

Combustion and emission characteristics of a spark ignition engine fueled with ammonia/gasoline and pure ammonia

Visualization of ammonia-methanol solution combustion under spark and passive jet ignition mode in an optically-accessible engine

Contact Info

Product

Resources

About

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame

Experimental and Numerical Study on the Effects of N₂ and NH₃ in NH₃/Syngas/Air Laminar Premixed Flame