U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Electrohydrodynamic enhancement of heat transfer

Patent 5769155 Issued on June 23, 1998. Estimated Expiration Date: Icon_subject June 28, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3477412

Heat exchanger with electrohydrodynamic effect
Patent #: 4651806
Issued on: 03/24/1987
Inventor: Allen ,   et al.

Method and apparatus for augmentation of convection heat transfer in liquid
Patent #: 5072780
Issued on: 12/17/1991
Inventor: Yabe

Apparatus and methods for controlling fluid flow in microchannels Patent #: 5632876
Issued on: 05/27/1997
Inventor: Zanzucchi, et al.

Inventors

Application

No. 673424 filed on 06/28/1996

US Classes:

165/109.1, WITH AGITATING OR STIRRING STRUCTURE165/96, WITH ADJUSTOR FOR HEAT, OR EXCHANGE MATERIAL, FLOW204/600Electrophoretic or electro-osmotic apparatus

Examiners

Primary: Rivell, John
Assistant: Atkinson, Christopher

Attorney, Agent or Firm

Foreign Patent References

  • 58-37495 JP. 03/13/1983
  • 58-37496 JP. 03/13/1983
  • 61-225590 JP. 10/13/1986
  • 61-225591 JP. 10/13/1986
  • 61-225592 JP. 10/13/1986
  • 61-225589 JP. 10/13/1986
  • 35695 JP. 01/13/1991
  • 170575 SE. 09/13/2012
  • 617672 SU. 07/13/1978
  • 1578438 SU 07/13/1990

International Class

F28F 013/12

Abstract

An apparatus for electrohydrodynamic augmentation of heat transfer with a working fluid comprising a heat transfer surface, said surface being formed with fins extending from a side of said surface in contact with the working fluid, said fins defining at least one channel having confronting sidewalls; an elongated, electrically conductive electrode disposed in the channel in relatively closely spaced relation between the sidewalls for carrying a current and producing an electric field for interacting with the working fluid to enhance heat exchange with the surface. At least one insulator disposed for engaging the channel in longitudinal spaced apart locations therealong. The insulator for supporting the electrode in the spaced standoff relation with the sidewalls for preventing excessive current flow between the electrode and the heat exchange surface through the working fluid and the longitudinal spacing of the insulator facilitating convective and conductive heat transfer of the working fluid with the surface.

Other References

  • M.M. Ohadi, Elecrohydrodynamic Enhancement of Heat Transfer in Heat Exchangers, Dec. 1991, ASHRAE Journal, 13 pages
  • C.A. Geppert, Electrohydrodynamically Enhanced Heat Transfer in Pool Boiling, Jul. 1994, a thesi
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