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Electrocoalescence of Drops in a Water-in Oil Emulsion

Electrocoalescence of Drops in a Water-in Oil Emulsion

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Sammendrag
Electrocoalescence of water drops in a stagnant water-in-oil emulsion has been studied in a newly developed test cell. An homogeneous electric field was applied across the emulsion volume. It was used to observe drop behaviour in a multi-drop system. The emulsion was made of napthenic oilcontaining chemically stabilized water drops with size in the range of 5-100 μm. Insulated electrodes were used to prevent direct charge injection and electrophoresis. Drop dynamics in the stagnant emulsion was observed by use of a high speed optical camera and high resolution optics. Three parameters were varied systematically: water cut, frequency and amplitude of the bipolar square voltage. Different events during electrocoalescence are described and discussed, including dynamics of both collapse and break-up of drops, chain formation and charge transfer in the emulsion. ©2009 IEEE
Språk
Engelsk
Institusjon(er)
  • SINTEF Energi AS / Elkraftteknologi
År
2009
Forlag
IEEE Conference Proceedings
Bok
2009 Annual Report Conference on Electrical Insualtion and Dielectric Phenomena
Hefte nr.
2009
ISBN
9781424445592
Side(r)
196 - 199