Convective heat transfer of nanofluids with correlations--颗粒学报PARTICUOLOGY

Asirvatham, L. G., Raja, B., Mohan Lal, D., & Wongwises, S. (2011). Convective heat transfer of nanofluids with correlations. Particuology, 9(6), 626–631. https://doi.org/10.1016/j.partic.2011.03.014

Convective heat transfer of nanofluids with correlations

Lazarus Godson Asirvatham ^a *, Balakrishnan Raja ^b, Dhasan Mohan Lal ^a, Somchai Wongwises ^{c d}

a R&AC Division, Department of Mechanical Engineering, College of Engineering, Guindy, Anna University, Chennai 600 025, Tamil Nadu, India
b Indian Institute of Information Technology, Design and Manufacturing (IIITD&M)-Kancheepuram, Chennai 600 048, India
c Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab (FUTURE), Department of Mechanical Engineering, King Mongkut's University of Technology Thonburi, 126 Bangmod, Tongkru, Bangkok 10140, Thailand
d The Academy of Science, The Royal Institute of Thailand, Sanam Suea Pa, Dusit, Bangkok 10300, Thailand

10.1016/j.partic.2011.03.014

Volume 9, Issue 6, December 2011, Pages 626-631

Received 1 May 2010, Revised 17 February 2011, Accepted 31 March 2011, Available online 22 October 2011.

E-mail: godasir@yahoo.co.in

Highlights

Abstract

To investigate the convective heat transfer of nanofluids, experiments were performed using silver–water nanofluids under laminar, transition and turbulent flow regimes in a horizontal 4.3 mm inner-diameter tube-in-tube counter-current heat transfer test section. The volume concentration of the nanoparticles varied from 0.3% to 0.9% in steps of 0.3%, and the effects of thermo-physical properties, inlet temperature, volume concentration, and mass flow rate on heat transfer coefficient were investigated. Experiments showed that the suspended nanoparticles remarkably increased the convective heat transfer coefficient, by as much as 28.7% and 69.3% for 0.3% and 0.9% of silver content, respectively. Based on the experimental results a correlation was developed to predict the Nusselt number of the silver–water nanofluid, with ±10% agreement between experiments and prediction.

Graphical abstract

Keywords

Convective heat transfer; Silver; Nanofluid; Correlation; Laminar; Turbulent; Transition

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