Journal
COMBUSTION SCIENCE AND TECHNOLOGY
Volume 184, Issue 5, Pages 660-675Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/00102202.2012.660222
Keywords
Biodiesel; Fuel atomization; Liquid biofuels; Vegetable oil
Funding
- U.S. Department of Energy [EE0001733]
- U.S. Department of Education
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In this study, clean combustion of straight vegetable oil (VO) is achieved by utilizing a novel flow blurring (FB) fuel injector with superior atomization characteristics. Experiments are conducted in an atmospheric pressure combustor using three different fuels: straight VO, which is fully-refined soybean oil, biodiesel produced from soybean VO, and No. 2 diesel. Combustion performance is assessed by comparing flame images, emissions profiles at the combustor exit plane, and pressure drop in fuel and atomizing air lines. Results show that the FB atomizer can create clean burning spray flames of straight VO without preprocessing and/or preheating. The FB injector produces sprays with smaller diameter fuel droplets to promote combustion in the premixed mode. All fuels resulted in similar CO emissions, while biodiesel flames had the lowest NOX emissions. Pressure drop in the fuel and atomizing air lines was independent of the fuel.
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