The Viscosity and Combustion Characteristics of Single-Droplet Water-Diesel Emulsion

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Diesel fuel exhibits excellent combustion characteristics and stability. However, diesel use is becoming restricted because of its associated environmental problems. Fuel emulsification, which increases efficiency and reduces pollution, became the solution of environmental problem. In this study, five water:diesel emulsions with mass ratios (0.3, 0.6, 1.0, 1.2, and 1.5) via ultrasonication were synthesized with and without surfactant. The optimal water:diesel ratio (=1:1) of an emulsion containing the surfactant was found by analyzing fuel concentration, mixing time, and viscosity. The combustion characteristics of single-droplet optimal emulsions were studied through ignition delay, burning rate, and total droplet lifetime at high temperature (400-700 degrees C) and pressure (1-15 bar), and micro-explosion phenomenon was observed. Although the ignition delay of emulsion increased, the total lifetime of the emulsion droplet was lower than that of diesel under 5 bar, 600 degrees C condition.
Publisher
MDPI
Issue Date
2019-05
Language
English
Article Type
Article
Citation

ENERGIES, v.12, no.10

ISSN
1996-1073
DOI
10.3390/en12101963
URI
http://hdl.handle.net/10203/263147
Appears in Collection
AE-Journal Papers(저널논문)
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