Effects of Fuel Composition on High-Pressure Non-Premixed Natural Gas Combustion

McTaggart-Cowan, Gordon; Wu, Ning; Jin, B.; Rogak, Steven N.; Davy, Martin; Bushe, W. Kendal

doi:10.1080/00102200802612260

Cited by 11 publications

(3 citation statements)

References 28 publications

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“…Recently, many investigations have been conducted on dual-fuel engines, including engine test experiments, [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] as well as numerical simulations. 6,7 Specifically, Cordiner et al 6 presented numerical and experimental analyses of the combustion in and exhaust emissions from a dual-fuel diesel-natural-gas engine.…”

Section: Introductionmentioning

confidence: 99%

Combustion performance and stability of a dual-fuel diesel–natural-gas engine

Sun

Liu

Zeng

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part D:

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Experimental investigations on the combustion performance and the stability of a dual-fuel engine fuelled with diesel and natural gas were conducted. The effects of the pilot diesel quantity and the pilot diesel injection timing were analysed. The results show that the maximum (peak) in-cylinder pressure increases and appears earlier with increasing pilot diesel quantity. The heat release rate has two peaks during the process of combustion. Earlier pilot diesel injection resulted in an earlier pressure evolution and a higher peak in-cylinder pressure. Correspondingly, the ignition of the pilot diesel was advanced and the heat release rate of diesel ignition increases. Earlier diesel injection timing increases the diesel combustion heat release, and the combustion of the whole charge in cylinder is more drastic. The pilot diesel quantities have different effects on the cycle-by-cycle variations (i.e. the coefficient of variation). At a low load, both very high and very low pilot diesel quantities lead to a high coefficient of variation in the indicated mean effective pressure, and the effect becomes weaker with increasing load. The coefficient of variation in the indicated mean effective pressure decreases and the coefficient of variation in the the peak in-cylinder pressure increases with increasing load. Additionally, the coefficient of variation in the indicated mean effective pressure decreases as the pilot diesel injection was advanced. The largest value of the coefficient of variation in the peak in-cylinder pressure occurs at 20° crank angle before top dead centre. The maximum rate of pressure rise increases dramatically with earlier pilot diesel injection timing. Nitrogen oxide emissions increase and hydrocarbon emissions decrease with increasing pilot diesel quantity. The hydrocarbon emissions decrease at earlier diesel injection timing; however, the nitrogen oxide emissions increase.

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Section: Introductionmentioning

confidence: 99%

Combustion performance and stability of a dual-fuel diesel–natural-gas engine

Sun

Liu

Zeng

et al. 2014

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Since associated gas mixtures have lower methane content than conventional NG, they are expected to have poorer fuel performance in existing engines. McTaggart-Cowan et al 9 also investigated the implications of NG composition on combustion in a heavy-duty engine and on associated pollutant emissions. Their results showed that black carbon particulate matter emissions increased with ethane and propane content.…”

Section: Introductionmentioning

confidence: 99%

Combustion Flame Speeds and Stability of Associated Natural Gas with High Concentrations of C₂–C₄ Alkanes

Arafin

Belmont

2018

Energy Fuels

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Associated gas worth of tens of billions of dollars is flared annually during oil and gas production, which leads to resource waste and environmental issues. The combustion characteristics of associated gas mixtures with high concentrations of C2–C4 hydrocarbons, sometimes called high-BTU gases, were examined in this study. Specifically, adiabatic laminar flame speeds and combustion stability, including critical heat loss at extinction, were quantified for a range of associated gas mixtures. The study used a porous plug burner facility for stabilization of premixed, laminar flat flames with measured heat loss from the flames. Standoff distances of associated gas flames were measured using CH* chemiluminescence for validation of the technique by comparison with numerical simulations and analytical modeling, and standoff distance was used to determine stable operating points. Laminar flame speeds of the major component gases (methane, ethane, propane, and butane) and three associated gas mixtures from the Bakken gas field in North Dakota were investigated at lean to mildly rich equivalence ratios (ϕ = 0.7–1.1). Numerical simulations were performed using USC II and Aramco 1.3 mechanisms for comparison of numerical and experimental laminar flame speeds of component and associated gas mixtures. Additionally, a flame speed correlation was introduced to model the flame speeds of these quaternary gas mixtures. Finally, a heat loss ratio was defined through comparison of heat loss and burner firing rate, and critical heat loss ratios were identified where these associated gas mixtures become unstable and extinguish. Results are discussed in the context of utilization of associated gas with high concentrations of C2–C4 alkanes.

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“…Various researchers have investigated the HCCI engine both experimentally [45][46][47][48] and numerically [45,[49][50][51]. Many numerical studies used a computational fluid dynamics (CFD) approach to obtain more accurate results of combustion temperature and products [52][53][54][55][56][57][58][59]. A CFD approach uses more computational power and time compared to a single-zone thermodynamics simulation.…”

Section: Introductionmentioning

confidence: 99%

Single-zone zero-dimensional model study for diesel-fuelled homogeneous charge compression ignition (HCCI) engines using Cantera

Hairuddin¹,

Yusaf²,

Wandel³

2016

Int. J. Automot. Mech. Eng.

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Homogeneous charge compression ignition (HCCI) engine technology is relatively new and the combustion behavior in an HCCI engine is difficult to predict. The combustion is fully controlled by the chemical kinetics and the chemical reaction of the mixture is influenced by changing input parameters. A zero-dimensional single-zone model was used to investigate the combustion behavior of a diesel engine operating in HCCI mode. An open source chemical kinetics package from Cantera was used in this study. The combustion behaviour can be observed, where H2O2 was fully decomposed during the main combustion event. The time for H2O2 to completely decompose into OH radicals was very short, which was about 5°CA. The combustion phasing was predicted in accordance with the experiment. The auto-ignition can be controlled by controlling the intake temperature or AFR. The start of combustion was advanced by increasing the intake temperature from 20 to 70°C and reducing the AFR from 58 to 29. However, reducing AFR will increase the in-cylinder peak pressure. In general, a zero-dimensional model is a useful and faster tool to predict the combustion phasing. When coupled with chemical kinetics, it provides more accurate results.

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Effects of Fuel Composition on High-Pressure Non-Premixed Natural Gas Combustion

Cited by 11 publications

References 28 publications

Combustion performance and stability of a dual-fuel diesel–natural-gas engine

Combustion performance and stability of a dual-fuel diesel–natural-gas engine

Combustion Flame Speeds and Stability of Associated Natural Gas with High Concentrations of C₂–C₄ Alkanes

Single-zone zero-dimensional model study for diesel-fuelled homogeneous charge compression ignition (HCCI) engines using Cantera

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Effects of Fuel Composition on High-Pressure Non-Premixed Natural Gas Combustion

Cited by 11 publications

References 28 publications

Combustion performance and stability of a dual-fuel diesel–natural-gas engine

Combustion performance and stability of a dual-fuel diesel–natural-gas engine

Combustion Flame Speeds and Stability of Associated Natural Gas with High Concentrations of C2–C4 Alkanes

Single-zone zero-dimensional model study for diesel-fuelled homogeneous charge compression ignition (HCCI) engines using Cantera

Contact Info

Product

Resources

About

Combustion Flame Speeds and Stability of Associated Natural Gas with High Concentrations of C₂–C₄ Alkanes