Spray Combustion Characteristics of Palm Biodiesel
نویسندگان
چکیده
The potential of Palm Methyl Esters (PME) as an alternative fuel for gas turbines is investigated using a swirl burner. The main air flow is preheated to 623 K and a swirling spray flame is established at atmospheric pressure. The spray combustion characteristics of PME are compared to diesel and Jet-A1 fuel under the same burner power output of 6 kW. Investigation of the fuel atomizing characteristics using Phase Doppler Anemometry (PDA) shows that most droplets are distributed within the flame reaction zone region. PME droplets exhibit higher Sauter Mean Diameter (SMD) values than baseline fuels, and thus higher droplet penetration length and longer evaporation timescales. PME swirl flame presents a different visible flame reaction zone while combusting with low luminosity and produces no soot. NOx emissions per unit energy are also reduced by using PME relative to those of conventional fuels, in spite of the ~17% higher specific fuel consumption and slightly larger droplets.
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