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Combustion characteristics of biodiesel fuel in high recirculation conditions

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Title Combustion characteristics of biodiesel fuel in high recirculation conditions
 
Creator REDDY, VM
BISWAS, P
GARG, P
KUMAR, S
 
Subject Biodiesel combustion
Preheated air combustion
Liquid fuel combustion
Swirl combustion
Low emission burner
MILD COMBUSTION
DIESEL-ENGINE
FLAMELESS OXIDATION
NOX EMISSIONS
NATURAL-GAS
SPRAY FLAME
OIL
PERFORMANCE
LIQUID
OPTIMIZATION
 
Description The potential of biodiesel as an alternative fuel for various applications leads to an investigation to understand the combustion characteristics of pure and blended biodiesel. The concept of internal recirculation of combustion products is employed in a high swirl and low emission burner to reduce emissions. Due to high boiling point (613 K) and SMD (37 mu m) of biodiesel, air preheating with minimum temperature above the boiling point of biodiesel is considered. Air at different temperatures of 623, 673 and 703 K is injected tangentially. Swirl flow pattern in the combustor creates the central low pressure zone due to vortex breakdown and improves the recirculation of combustion products. Results in improved mixing and high residence time of reactants. Biodiesel is blended with diesel to reduce the surface tension and viscosity and improve the combustion characteristics. Literature has little consensus on NOx emissions from the combustion system operating with biodiesel. Therefore, the present study aims to reduce the thermal NO formation through the concept of exhaust gas recirculation. The CO, HC, NOx emissions and soot-volume fraction from biodiesel (100B0D), 50% blending (50B50D), diesel and kerosene are compared at different air preheating temperatures. A drastic reduction in emissions is observed in 50B50D as compared with pure biodiesel. (C) 2013 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2014-12-28T17:24:50Z
2014-12-28T17:24:50Z
2014
 
Type Article
 
Identifier FUEL PROCESSING TECHNOLOGY, 118310-317
0378-3820
1873-7188
http://dx.doi.org/10.1016/j.fuproc.2013.10.004
http://dspace.library.iitb.ac.in/jspui/handle/100/16982
 
Language English