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Journal of Enhanced Heat Transfer
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ISSN Imprimer: 1065-5131
ISSN En ligne: 1026-5511

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Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.v13.i4.10
pages 279-289

Investigation of CuO/Water Nanofluid Laminar Convective Heat Transfer through a Circular Tube

Saeed Zeinali Heris
Heat Pipe and Nanofluid Research Center, Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran
Mohsen Nasr Esfahany
Department of Chemical Engineering, Isfahan University of Technology
G. Etemad
Department of Chemical Engineering, Isfahan University of Technology, Isfahan 84154, Iran

RÉSUMÉ

In this study, laminar convective heat transfer for CuO/water nanofluid, which is a suspension of CuO nanoparticles in water, in a circular tube with the constant wall-temperature boundary condition was investigated experimentally. The heat-transfer coefficients for different volume fractions of solids at various Peclet numbers were determined experimentally. Also the viscosity of nanofluids was measured and compared with theoretical model predictions.
Both theoretical and experimental results indicate that heat-transfer coefficients increase with nanoparticle concentration as well as the Peclet number. But the experimental results are greater than the values obtained by the homogeneous model with nanofluids physical and thermal properties.


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