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Pool boiling heat transfer performance of Newtonian nanofluids

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Abstract

Experimental measurements were carried out on the boiling heat transfer characteristics of γ-Al2O3/water and SnO2/water Newtonian nanofluids. Nanofluids are liquid suspensions containing nanoparticles with sizes smaller than 100 nm. In this research, suspensions with different concentrations of γ-Al2O3 and SnO2 nanoparticles in water were studied under nucleate pool boiling heat transfer conditions. Results show that nanofluids possess noticeably higher boiling heat transfer coefficients than the base fluid. The boiling heat transfer coefficients depend on the type and concentration of nanoparticles.

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Abbreviations

A :

Heater surface area (m2)

C p :

Heat capacity of the fluid (J/kg K)

g :

Gravitational acceleration (m/s2)

h:

Boiling heat transfer coefficient (W/m2 K)

h fg :

Latent heat of evaporation of the fluid (J/kg)

k l :

Thermal conductivity (W/m K)

Pr :

Prandtl number

q :

Power (W)

q″:

Heat flux density (W/m2)

T s :

Surface temperature (K)

T b :

Fluid bulk temperature (K)

μ :

Fluid viscosity (N s/m2)

ρ l :

Liquid density (kg/m3)

ρ v :

Vapour density (kg/m3)

σ :

Surface tension (N/m)

ΔT e :

Excess temperature (K)

b :

Bulk

e :

Excess

l :

Liquid

s :

Surface

v :

Vapour

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Acknowledgments

The financial support of Nanotechnology Committee of The Ministry of Science, Research, and Technology of I.R. Iran is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemical Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran

    Saide Soltani & Seyed Gholamreza Etemad

  2. Department of Chemical and Biological Engineering, University of Ottawa, Ottawa, ON, K1N 6N5, Canada

    Jules Thibault

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  1. Saide Soltani
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  2. Seyed Gholamreza Etemad
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  3. Jules Thibault
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Correspondence to Seyed Gholamreza Etemad.

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Soltani, S., Etemad, S.G. & Thibault, J. Pool boiling heat transfer performance of Newtonian nanofluids. Heat Mass Transfer 45, 1555–1560 (2009). https://doi.org/10.1007/s00231-009-0530-9

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  • DOI: https://doi.org/10.1007/s00231-009-0530-9

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