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RESEARCH PAPERS: Properties and Property Measurements

Measuring Thermal Conductivity of Fluids Containing Oxide Nanoparticles

[+] Author and Article Information
S. Lee

Department of Mechanical Engineering, Kyonggi University, Suwon, Kyonggi-Do Korea

S. U.-S. Choi

Energy Technology Division, Argonne National Laboratory, Argonne, IL 60439

S. Li, J. A. Eastman

Materials Science Division, Argonne National Laboratory, Argonne, IL 60439

J. Heat Transfer 121(2), 280-289 (May 01, 1999) (10 pages) doi:10.1115/1.2825978 History: Received July 07, 1998; Revised January 25, 1999; Online December 05, 2007

Abstract

Oxide nanofluids were produced and their thermal conductivities were measured by a transient hot-wire method. The experimental results show that these nanofluids, containing a small amount of nanoparticles, have substantially higher thermal conductivities than the same liquids without nanoparticles. Comparisons between experiments and the Hamilton and Crosser model show that the model can predict the thermal conductivity of nanofluids containing large agglomerated Al2 O3 particles. However, the model appears to be inadequate for nanofluids containing CuO particles. This suggests that not only particle shape but size is considered to be dominant in enhancing the thermal conductivity of nanofluids.

Copyright © 1999 by The American Society of Mechanical Engineers
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