The convective heat transfer coefficient and pressure drop of silver-water nanofluids is measured in a counter flow heat exchanger from laminar to turbulent flow regime. The experimental results show that the convective heat transfer coefficient of the nanofluids increases by up to 69% at a concentration of 0.9 vol. % compared with that of pure water. Furthermore, the experimental results show that the convective heat transfer coefficient enhancement exceeds the thermal conductivity enhancement. It is observed that the measured heat transfer coefficient is higher than that of the predicted ones using Gnielinski equation by at least 40%. The use of the silver nanofluid has a little penalty in pressure drop up to 55% increase 0.9% volume concentration of silver nanoparticles.
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e-mail: godasir@yahoo.co.in
e-mail: rajab@iiitdm.ac.in
e-mail: mohanlal@annauniv.edu
e-mail: somchai.won@kmutt.ac.th
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September 2012
Research Papers
Convective Heat Transfer Characteristics of Silver-Water Nanofluid Under Laminar and Turbulent Flow Conditions
Lazarus Godson,
Lazarus Godson
Department of Mechanical Engineering,
e-mail: godasir@yahoo.co.in
Karunya University
, Coimbatore, Tamil Nadu 641 114, India
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B. Raja,
e-mail: rajab@iiitdm.ac.in
B. Raja
Indian Institute of Information Technology
, Design and Manufacturing (IIITD&;M), Kancheepuram, Chennai, Tamil Nadu 600 048, India
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D. Mohan Lal,
D. Mohan Lal
Department of Mechanical Engineering,
e-mail: mohanlal@annauniv.edu
Anna University
, Chennai, Tamil Nadu 600 025, India
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S. Wongwises
S. Wongwises
Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering,
e-mail: somchai.won@kmutt.ac.th
King Mongkut’s University of Technology Thonburi
, Bangmod, Bangkok 10140, Thailand
; The Academy of Science, The Royal Institute of Thailand
, Sanam Suea Pa, Dusit, Bangkok 10300, Thailand
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Lazarus Godson
Department of Mechanical Engineering,
Karunya University
, Coimbatore, Tamil Nadu 641 114, India
e-mail: godasir@yahoo.co.in
B. Raja
Indian Institute of Information Technology
, Design and Manufacturing (IIITD&;M), Kancheepuram, Chennai, Tamil Nadu 600 048, India
e-mail: rajab@iiitdm.ac.in
D. Mohan Lal
Department of Mechanical Engineering,
Anna University
, Chennai, Tamil Nadu 600 025, India
e-mail: mohanlal@annauniv.edu
S. Wongwises
Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering,
King Mongkut’s University of Technology Thonburi
, Bangmod, Bangkok 10140, Thailand
; The Academy of Science, The Royal Institute of Thailand
, Sanam Suea Pa, Dusit, Bangkok 10300, Thailand
e-mail: somchai.won@kmutt.ac.th
J. Thermal Sci. Eng. Appl. Sep 2012, 4(3): 031001 (8 pages)
Published Online: July 12, 2012
Article history
Received:
April 6, 2011
Revised:
January 24, 2012
Online:
July 12, 2012
Published:
July 12, 2012
Citation
Godson, L., Raja, B., Mohan Lal, D., and Wongwises, S. (July 12, 2012). "Convective Heat Transfer Characteristics of Silver-Water Nanofluid Under Laminar and Turbulent Flow Conditions." ASME. J. Thermal Sci. Eng. Appl. September 2012; 4(3): 031001. https://doi.org/10.1115/1.4006027
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