期刊
EXPERIMENTAL THERMAL AND FLUID SCIENCE
卷 43, 期 -, 页码 71-75出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.expthermflusci.2012.04.006
关键词
Ethanol; Ethylene; Premixed flame; Particulate matter; Particle size distribution; Soot
资金
- COLCIENCIAS
- University of Antioquia
- MIUR in the framework of the PRIN08 Ultrafine particles and their health effects
In the present study a laminar premixed ethylene flame was doped with different amounts of ethanol in order to understand the influence on biofuels in the total amount of particulate matter and the size distribution functions of the formed carbonaceous particles. Four different flames were investigated: one of pure ethylene as reference and three with an increased amount of ethanol, i.e. 10%, 20% and 30%. The equivalence ratio of the four flames was kept constant at 2.01. The particle size distribution functions were obtained using a nano-Differential Mobility Analyzer (nano-DMA). The results showed a general reduction of the total volume fraction of particulate when ethanol was added. The reduction of the formed particles increased as a function of the amount of ethanol added. The particle size distribution for pure ethylene flame and ethanol doped flames at different heights with the same amount of particles are quite similar. This indicates that in premixed flames, ethanol mostly affects gas phase chemistry and consequently the formation of incipient particles. (c) 2012 Elsevier Inc. All rights reserved.
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