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ScienceAsia 37 (2011): 174-177 |doi: 10.2306/scienceasia1513-1874.2011.37.174


A study on spray characteristics of non-esterified biodiesel fuel


Seunghun Choia, Youngtaig Ohb,*

 
ABSTRACT:     The spray characteristics of a blended fuel containing conventional diesel and non-esterified biodiesel components were investigated. Experiments were performed to analyse the effects that blending ratio and injection pressure have on the spray behaviour. The process of spray injection was analysed with a laser diffraction particle analyser. In addition, spray atomization characteristics were studied using the Sauter mean diameter (SMD) varying the droplet concentrations under various injection conditions. Fuel containing non-esterified biodiesel components exhibited different spray patterns in comparison to that containing conventional diesel due to the high viscosity and large surface tension of the fuel. The results indicate that the SMD becomes smaller by increasing injection pressure, and larger by increasing the mixing ratio.

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a The Research Centre of Industrial Technology, Chonbuk National University, Deokjin-dong, Deokjin-gu, Jeonju, Jeonbuk, 561-756, Republic of Korea
b Department of Mechanical Engineering, The Research Centre of Industrial Technology, Chonbuk National University, Deokjin-dong, Deokjin-gu, Jeonju, Jeonbuk, 561-756, Republic of Korea

* Corresponding author, E-mail: ohyt@jbnu.ac.kr

Received 13 Aug 2010, Accepted 20 Apr 2011