Advances in New and Renewable Energy >
Research on the Effects of Preheated Air Temperature on Flame Characteristics of Biodiesel
Received date: 2013-11-27
Revised date: 2014-02-16
Online published: 2014-02-28
The flame images of biodiesel were obtained by using high-speed photography method and digital image processing technique, and the length and area of the flame were calculated by Matlab software. The effects of preheated air temperature on shape, length as well as area of the flame were discussed. 9 preheated air temperatures were set up in the experiment: 20oC, 80oC, 140oC, 220oC, 290oC, 350oC, 400oC, 450oC and 500oC. Results show that at low preheated air temperature, the flame of biodiesel has a dispersed format and poor continuity and the main combustion area, that is the high brightness area, is small. As the preheated air temperature increases, the flame is more compact and in good continuity, the main combustion area is larger and the brightness increases significantly. The length and area of flame vibrate intensely at each working condition, the mean length and area of flame have the same trend: with the increase of temperature, the mean length and area first decrease obviously, and then increase gradually.
CHEN Lian-ying , JIANG Shao-jian , WANG Chuan-yu , JIANG Yong , YAO Kun . Research on the Effects of Preheated Air Temperature on Flame Characteristics of Biodiesel[J]. Advances in New and Renewable Energy, 2014 , 2(1) : 13 -17 . DOI: 10.3969/j.issn.2095-560X.2014.01.003
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