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Enhanced heat transfer using nanofluids

United States Patent

April 24, 2001
View the Complete Patent at the US Patent & Trademark Office
Argonne National Laboratory - Visit the Technology Development and Commercialization Website
This invention is directed to a method of and apparatus for enhancing heat transfer in fluids such as deionized water. ethylene glycol, or oil by dispersing nanocrystalline particles of substances such as copper, copper oxide, aluminum oxide, or the like in the fluids. Nanocrystalline particles are produced and dispersed in the fluid by heating the substance to be dispersed in a vacuum while passing a thin film of the fluid near the heated substance. The fluid is cooled to control its vapor pressure.
Choi; Stephen U. S. (Lisle, IL), Eastman; Jeffrey A. (Naperville, IL)
University of Chicago (Chicago, IL)
09/ 199,002
November 24, 1998
This invention was made with Government support under Contract No. W-31-109-ENG-38 by the Department of Energy. The Government has certain rights in this invention.