Biodiesel combustion, emissions and emission control

Szybist, James P.; Song, Juhun; Alam, Mahabubul; Boehman, André L.

doi:10.1016/j.fuproc.2006.12.008

Cited by 396 publications

(197 citation statements)

References 19 publications

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“…Fortunately, both laboratory experiments and kinetic models have begun to emerge very recently as these limitations have 7 found new solutions. In addition, single-cylinder engine studies of combustion of biodiesel fuels are being used [9][10][11][12] to evaluate the performance characteristics of these fuels.…”

Section: Previous Studiesmentioning

confidence: 99%

“…Dayma et al [25] carried out JSR experiments to validate their own new kinetic mechanism for methyl hexanoate. In contrast, in the absence of available experimental data for methyl decanoate combustion, Herbinet et al [29] used experiments from related fuels for validation purposes, including shock tube experiments [42,43] using n-decane as the fuel, JSR experiments using RME as the fuel [34], and motored engine experiments using mixtures of n-heptane and methyl decanoate [10][11][12]. The similarities in ignition behavior of the saturated species n-decane and methyl decanoate demonstrated that the long saturated straight-chain portions of both fuels were primarily responsible for their rates of ignition, the same conclusion as that reached by Dagaut et al [34] which compared the combustion of RME with n-cetane.…”

Section: Previous Studiesmentioning

confidence: 99%

“…Using reaction rates most often measured or estimated for similar reactions in much smaller hydrocarbon 11 molecules, we assigned similar rates expressions and product distributions to the same reactions in the larger fuel molecules. Such an estimation process involves uncertainties, and better rate expressions would be valuable in refining these reaction mechanisms.…”

Section: Mechanism Developmentmentioning

confidence: 99%

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Detailed chemical kinetic reaction mechanisms for soy and rapeseed biodiesel fuels

Westbrook

Naik²,

Herbinet³

et al. 2011

Combustion and Flame

240

184

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A detailed chemical kinetic reaction mechanism is developed for the five major components of soy biodiesel and rapeseed biodiesel fuels. These components, methyl stearate, methyl oleate, methyl linoleate, methyl linolenate, and methyl palmitate, are large methyl ester molecules, some with carbon-carbon double bonds, and kinetic mechanisms for them as a family of fuels have not previously been available. Of particular importance in these mechanisms are models for alkylperoxy radical isomerization reactions in which a C=C double bond is embedded in the transition state ring. The resulting kinetic model is validated through comparisons between predicted results and a relatively small experimental literature. The model is also used in simulations of biodiesel oxidation in jet-stirred reactor and intermediate shock tube ignition and oxidation conditions to demonstrate the capabilities and limitations of these mechanisms.Differences in combustion properties between the two biodiesel fuels, derived from soy and rapeseed oils, are traced to the differences in the relative amounts of the same five methyl ester components. † Lawrence

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Section: Previous Studiesmentioning

confidence: 99%

Section: Previous Studiesmentioning

confidence: 99%

Section: Mechanism Developmentmentioning

confidence: 99%

See 1 more Smart Citation

Detailed chemical kinetic reaction mechanisms for soy and rapeseed biodiesel fuels

Westbrook

Naik²,

Herbinet³

et al. 2011

Combustion and Flame

240

184

View full text Add to dashboard Cite

show abstract

“…These same methyl esters are found in biodiesel derived from other vegetable oils such as rapeseed oil, but the proportions differ. Methyl esters in particular methyl butanoate (n-C 3 H 7 C(=O)OCH 3 ) and methyl decanoate (n-C 9 H 19 C(=O)OCH 3 ) have been proposed as possible surrogates for biodiesel [1][2][3][4][5][6][7]. The present study is focused on combustion of methyl decanoate.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies of ignition and combustion of methyl decanoate have been focused on premixed systems [5][6][7]. The present study considers combustion of methyl decanoate in nonpremixed, aerodynamically strained flows.…”

Section: Introductionmentioning

confidence: 99%

Experimental and kinetic modeling study of extinction and ignition of methyl decanoate in laminar non-premixed flows

Seshadri

Herbinet

et al. 2009

Proceedings of the Combustion Institute

131

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Methyl decanoate is a large methyl ester that can be used as a surrogate for biodiesel. In this experimental and computational study, the combustion of methyl decanoate is investigated in nonpremixed, nonuniform flows. Experiments are performed employing the counterflow configuration with a fuel stream made up of vaporized methyl decanoate and nitrogen, and an oxidizer stream of air. The mass fraction of fuel in the fuel stream is measured as a function of the strain rate at extinction, and critical conditions of ignition are measured in terms of the temperature of the oxidizer stream as a function of the strain rate. It is not possible to use a fully detailed mechanism for methyl decanoate to simulate the counterflow flames because the number of species and reactions is too large to employ with current flame codes and computer resources. Therefore a skeletal mechanism was deduced from a detailed mechanism of 8555 elementary reactions and 3036 species using ``directed relation graph'' method. This skeletal mechanism has only 713 elementary reactions and 125 species. Critical conditions of ignition were calculated using this skeletal mechanism and are found to agree well with experimental data. The predicted strain rate at extinction is found to be lower than the measurements. In general, the methyl decanoate mechanism provides a realistic kinetic tool for simulation of biodiesel fuels. Experimental and Kinetic Modeling Study of Extinction and Ignition of Methyl Decanoate in Laminar Nonpremixed Flows Experimental and Kinetic Modeling Study of Extinction and Ignition of Methyl Decanoate in Laminar Nonpremixed Flows AbstractMethyl decanoate is a large methyl ester that can be used as a surrogate for biodiesel. In this experimental and computational study, the combustion of methyl decanoate is investigated in nonpremixed, nonuniform flows. Experiments are performed employing the counterflow configuration with a fuel stream made up of vaporized methyl decanoate and nitrogen, and an oxidizer stream of air. The mass fraction of fuel in the fuel stream is measured as a function of the strain rate at extinction, and critical conditions of ignition are measured in terms of the temperature of the oxidizer stream as a function of the strain rate. It is not possible to use a fully detailed mechanism for methyl decanoate to simulate the counterflow flames because the number of species and reactions is too large to employ with current flame codes and computer resources. Therefore a skeletal mechanism was deduced from a detailed mechanism of 8555 elementary reactions and 3036 species using "directed relation graph" method. This skeletal mechanism has only 713 elementary reactions and 125 species. Critical conditions of ignition were calculated using this skeletal mechanism and are found to agree well with experimental data. The predicted strain rate at extinction is found to be lower than the measurements. In general, the methyl decanoate mechanism provides a realistic kinetic tool for simulation of biodiesel fuels.

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