This paper presents the specific heat measurements of three nanofluids containing aluminum oxide, zinc oxide, and silicon dioxide nanoparticles. The first two are dispersed in a base fluid of 60:40 by mass of ethylene glycol and water (60:40 EG/W) and the last one in deionized water. Measurements were conducted over a temperature range of 315–363 K, which is the normal range of operation of automobile coolants and building heating fluids in cold regions. The nanoparticle volumetric concentrations tested were up to 10%. The measured values were compared with existing equations for the specific heat of nanofluids. A close agreement with the experimental data was not observed. Therefore, a new general correlation was developed for the specific heat as functions of particle volumetric concentration, temperature, and the specific heat of both the particle and the base fluid from the present set of measurements. The correlation predicts the specific heat values of each nanofluid within an average error of about 2.7%.
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Research Papers
Specific Heat Measurement of Three Nanofluids and Development of New Correlations
Ravikanth S. Vajjha,
Ravikanth S. Vajjha
Department of Mechanical Engineering,
University of Alaska Fairbanks
, Fairbanks, AK 99775
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Debendra K. Das
Debendra K. Das
Department of Mechanical Engineering,
e-mail: ffdkd@uaf.edu
University of Alaska Fairbanks
, Fairbanks, AK 99775
Search for other works by this author on:
Ravikanth S. Vajjha
Department of Mechanical Engineering,
University of Alaska Fairbanks
, Fairbanks, AK 99775
Debendra K. Das
Department of Mechanical Engineering,
University of Alaska Fairbanks
, Fairbanks, AK 99775e-mail: ffdkd@uaf.edu
J. Heat Transfer. Jul 2009, 131(7): 071601 (7 pages)
Published Online: May 6, 2009
Article history
Received:
May 31, 2008
Revised:
December 23, 2008
Published:
May 6, 2009
Citation
Vajjha, R. S., and Das, D. K. (May 6, 2009). "Specific Heat Measurement of Three Nanofluids and Development of New Correlations." ASME. J. Heat Transfer. July 2009; 131(7): 071601. https://doi.org/10.1115/1.3090813
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