Evaluating methane substitution by NH3/H2/C3H8 blends in premixed combustion: Feasibility assessment through laminar burning velocity, flame instability and combustion efficiency

IF 6.2 2区工程技术 Q2 ENERGY & FUELS

Journal of The Energy Institute Pub Date : 2025-09-30 DOI:10.1016/j.joei.2025.102318

Jiao Chen , Haoxin Deng , Xunxian Shi , Chenglong Yu , Jun Song , Qifeng Zhu , Guoyan Chen , Xuegui Wang

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引用次数: 0

Abstract

To support the low-carbon transition of energy systems, this study investigates the combustion characteristics of NH₃/H₂/C₃H₈ ternary blends with methane-equivalent calorific value using the spherical expanding flame method. The laminar burning velocity (LBV) can be adjusted to match methane via blend ratio design. As NH₃ volume increases from 0 to 0.712, LBV drops by over 66 %. The chemical and thermal effects were separated, and radiation effects were quantified. Key flame parameters, including Markstein length, expansion ratio, flame thickness, critical Peclet number, Karlovitz number, and dimensionless growth rate, were analyzed to evaluate the influence of fuel composition and equivalence ratio on flame propagation and stability. Higher NH₃ fractions improved flame stability. Methane interchangeability was assessed using the High Wobbe index and LBV. Results show that MECV-based NH₃/H₂/C₃H₈ blends offer good combustion performance and are promising low-carbon methane alternatives.

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预混合燃烧中NH3/H2/C3H8混合物替代甲烷的评价：通过层流燃烧速度、火焰不稳定性和燃烧效率进行可行性评价

为了支持能源系统的低碳转型，本研究采用球形膨胀火焰法研究了具有甲烷当量热值的NH3/H2/C3H8三元共混物的燃烧特性。层流燃烧速度（LBV）可以通过混合比设计来调节以匹配甲烷。NH3体积从0增加到0.712，LBV下降66%以上。化学效应和热效应分离，辐射效应量化。分析了Markstein长度、膨胀比、火焰厚度、临界Peclet数、Karlovitz数、无因次生长速率等关键火焰参数，评价了燃料成分和当量比对火焰传播和稳定性的影响。较高的NH3分数提高了燃烧稳定性。利用高沃伯指数和LBV评价甲烷互换性。结果表明，基于mecv的NH3/H2/C3H8共混物具有良好的燃烧性能，是很有前景的低碳甲烷替代品。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of The Energy Institute 工程技术-能源与燃料

CiteScore

10.60

自引率

5.30%

发文量

166

审稿时长

16 days

期刊介绍： The Journal of the Energy Institute provides peer reviewed coverage of original high quality research on energy, engineering and technology.The coverage is broad and the main areas of interest include: Combustion engineering and associated technologies; process heating; power generation; engines and propulsion; emissions and environmental pollution control; clean coal technologies; carbon abatement technologies Emissions and environmental pollution control; safety and hazards; Clean coal technologies; carbon abatement technologies, including carbon capture and storage, CCS; Petroleum engineering and fuel quality, including storage and transport Alternative energy sources; biomass utilisation and biomass conversion technologies; energy from waste, incineration and recycling Energy conversion, energy recovery and energy efficiency; space heating, fuel cells, heat pumps and cooling systems Energy storage The journal''s coverage reflects changes in energy technology that result from the transition to more efficient energy production and end use together with reduced carbon emission.