DocumentCode :
1684571
Title :
Electrostatic droplet-formation in water/oil flow in a microchannel system
Author :
Nakano, Michihiko ; Nakai, Naohito ; Inoue, Masahumi ; Takashima, Kazunori ; Katsura, Shinji ; Mizuno, Akira
Author_Institution :
Dept. of Ecological Eng., Toyohashi Univ. of Technol., Aichi, Japan
Volume :
4
fYear :
2004
Firstpage :
2373
Abstract :
Electrostatic atomization has been studied to inject charged water droplets into oil in a microchannel reactor system. With a negative DC voltage, Taylor cone was formed and the droplets were injected into oil within 1/30 sec. The injection took place periodically with interval of a few seconds when the DC voltage was maintained. Using water, droplets of 10.7 μm average diameter with standard deviation of 3.8 μm were injected into rapeseed oil. When 50% glycerol was used, droplets of 6.7 μm diameter with SD of 2 μm were generated. The electrostatic atomization was proved to be effective in a microchannel system to produce charged fine droplets into oil. This will provide a pump-free system as the droplets can be manipulated using electrical force. The results require further improvement to produce more monodisperse droplets.
Keywords :
channel flow; drops; electrohydrodynamics; electrostatics; sprays; μTAS; Taylor cone; charged water droplet injection; electrical force; electrohydrodynamics; electrostatic atomization; electrostatic droplet-formation; glycerol; microchannel reactor system; micrototal analysis system; monodisperse droplets; rapeseed oil; standard deviation; water-oil flow; Electrohydrodynamics; Electrostatics; Fluorescence; Glass; Inductors; Microchannel; Petroleum; Pumps; Resists; Voltage;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industry Applications Conference, 2004. 39th IAS Annual Meeting. Conference Record of the 2004 IEEE
ISSN :
0197-2618
Print_ISBN :
0-7803-8486-5
Type :
conf
DOI :
10.1109/IAS.2004.1348807
Filename :
1348807
Link To Document :
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