JP Journal of Heat and Mass Transfer
Volume 14, Issue 3, Pages 367 - 390
(August 2017) http://dx.doi.org/10.17654/HM014030367 |
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SPRAY FLAMES OF THREE-COMPONENT FUEL BLENDS IN A POROUS MEDIA BURNER AT LEAN CONDITIONS
Flavio I. Moreno, Ramkumar N. Parthasarathy and Subramanyam R. Gollahalli
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Abstract: Soy methyl ester and butanol are attractive alternatives to liquid petroleum fuels that can be produced from renewable resources. The combustion characteristics of spray flames of blends of Jet-A, soy methyl ester, and butanol were studied in a porous media combustor. The spray was generated using a swirl air blast atomizer and injected into a heated co-flow environment. The air-fuel mixture was passed through two porous media of different porosities and ignited downstream. The flow rates were adjusted to two different equivalence ratios in the fuel lean regime: 0.5 and 0.6. Measurements of the volumetric concentration of CO, CO2 and NOx in the exhaust were carried out with sampling probes and gas analyzers. The in-flame temperature profiles were measured using an R-type thermocouple. The blue region in the flames increased with the oxygen content in the fuel. The CO and NO emission indices were comparable in all the flames. Peak temperature was recorded at 25% flame height near the flame axis. The measurements highlighted the effectiveness of the porous media in the spray evaporation and mixing, and the impact of fuel-bound oxygen in soot reduction. |
Keywords and phrases: combustion, biofuels, three-component fuels, porous media, spray flames, pollutant emissions, lean combustion conditions. |
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