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Vaporization and Combustion Processes of Alcohols and Acetone-Butanol-Ethanol (ABE) blended in n-Dodecane for High Pressure-High Temperature Conditions : Application to Compression Ignition Engine

Abstract : The growing concern in recent decades, linked to the depletion of oil resources and global warming by greenhouse gases has increased the interest of butanol as an alternative fuel in the transport sector. However, the low yield of production and separation processes still prevents its commercialization as a fuel. Therefore, the intermediate fermentation mixture of butanol production, Acetone-Butanol-Ethanol (ABE), is increasingly considered as a potential alternative fuel because of its similar properties to butanol and its advantages in terms of the energy and cost in the separation process.The context of this work aims to study the impact of fuel properties on the spray and combustion processes of ABE mixture and alcohol fuels, blended with the diesel surrogate fuel, n-dodecane, in different volume ratio from 20% to 50%. A new combustion chamber called "New One Shot Engine," was designed and developed to reach the high-pressure and high temperatureconditions of "Spray-A" (60 bar, 800-900 K and 22.8 kg/m³) defined by the Engine Combustion Network (ECN).The macroscopic spray and combustion parameters were characterized by using the several optical techniques (extinction,Schlieren, chemiluminescence of OH*) under non-reactive (pure Nitrogen) and reactive (15% of oxygen) conditions. These experimental results not only made it possible to study the molecular oxygen impact and provide a new accurate database,but also to affirm the possibility of using ABE up to 20% by volume in compression-ignition engines, as its spray and combustion characteristics similar to conventional diesel fuel.
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Submitted on : Wednesday, April 10, 2019 - 3:46:42 PM
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  • HAL Id : tel-02095626, version 1

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Ob Nilaphai. Vaporization and Combustion Processes of Alcohols and Acetone-Butanol-Ethanol (ABE) blended in n-Dodecane for High Pressure-High Temperature Conditions : Application to Compression Ignition Engine. Other [cond-mat.other]. Université d'Orléans, 2018. English. ⟨NNT : 2018ORLE2020⟩. ⟨tel-02095626⟩

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