Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube

The heat transfer coefficient and friction factor of TiO2 and SiO2 water based nanofluids flowing in a circular tube under turbulent flow are investigated experimentally under constant heat flux boundary condition. TiO2 and SiO2 nanofluids with an average particle size of 50 nm and 22 nm respectivel...

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Main Authors:	Azmi, W. H., Sharma, K. V., Sarma, P. K., R., Mamat, G., Najafi
Format:	Article
Language:	English
Published:	Elsevier Ltd 2014
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/7377/ http://umpir.ump.edu.my/id/eprint/7377/ http://umpir.ump.edu.my/id/eprint/7377/ http://umpir.ump.edu.my/id/eprint/7377/1/Heat_transfer_and_friction_factor_of_water_based_TiO2_and_SiO2_nanofluids_under_turbulent_flow_in_a_tube.pdf

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recordtype	eprints
spelling	ump-73772018-01-23T07:19:48Z http://umpir.ump.edu.my/id/eprint/7377/ Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube Azmi, W. H. Sharma, K. V. Sarma, P. K. R., Mamat G., Najafi TJ Mechanical engineering and machinery The heat transfer coefficient and friction factor of TiO2 and SiO2 water based nanofluids flowing in a circular tube under turbulent flow are investigated experimentally under constant heat flux boundary condition. TiO2 and SiO2 nanofluids with an average particle size of 50 nm and 22 nm respectively are used in the working fluid for volume concentrations up to 3.0%. Experiments are conducted at a bulk temperature of 30 °C in the turbulent Reynolds number range of 5000 to 25,000. The enhancements in viscosity and thermal conductivity of TiO2 are greater than SiO2 nanofluid. However, a maximum enhancement of 26% in heat transfer coefficients is obtained with TiO2 nanofluid at 1.0% concentration, while SiO2 nanofluid gave 33% enhancement at 3.0% concentration. The heat transfer coefficients are lower at all other concentrations. The particle concentration at which the nanofluids give maximum heat transfer has been determined and validated with property enhancement ratio. It is observed that the pressure drop is directly proportional to the density of the nanoparticle. Elsevier Ltd 2014 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/7377/1/Heat_transfer_and_friction_factor_of_water_based_TiO2_and_SiO2_nanofluids_under_turbulent_flow_in_a_tube.pdf Azmi, W. H. and Sharma, K. V. and Sarma, P. K. and R., Mamat and G., Najafi (2014) Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube. International Communications in Heat and Mass Transfer, 59. pp. 30-38. ISSN 0735-1933 http://dx.doi.org/0.1016/j.icheatmasstransfer.2014.10.007 DOI: 0.1016/j.icheatmasstransfer.2014.10.007
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Azmi, W. H. Sharma, K. V. Sarma, P. K. R., Mamat G., Najafi Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube
description	The heat transfer coefficient and friction factor of TiO2 and SiO2 water based nanofluids flowing in a circular tube under turbulent flow are investigated experimentally under constant heat flux boundary condition. TiO2 and SiO2 nanofluids with an average particle size of 50 nm and 22 nm respectively are used in the working fluid for volume concentrations up to 3.0%. Experiments are conducted at a bulk temperature of 30 °C in the turbulent Reynolds number range of 5000 to 25,000. The enhancements in viscosity and thermal conductivity of TiO2 are greater than SiO2 nanofluid. However, a maximum enhancement of 26% in heat transfer coefficients is obtained with TiO2 nanofluid at 1.0% concentration, while SiO2 nanofluid gave 33% enhancement at 3.0% concentration. The heat transfer coefficients are lower at all other concentrations. The particle concentration at which the nanofluids give maximum heat transfer has been determined and validated with property enhancement ratio. It is observed that the pressure drop is directly proportional to the density of the nanoparticle.
format	Article
author	Azmi, W. H. Sharma, K. V. Sarma, P. K. R., Mamat G., Najafi
author_facet	Azmi, W. H. Sharma, K. V. Sarma, P. K. R., Mamat G., Najafi
author_sort	Azmi, W. H.
title	Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube
title_short	Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube
title_full	Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube
title_fullStr	Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube
title_full_unstemmed	Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube
title_sort	heat transfer and friction factor of water based tio2 and sio2 nanofluids under turbulent flow in a tube
publisher	Elsevier Ltd
publishDate	2014
url	http://umpir.ump.edu.my/id/eprint/7377/ http://umpir.ump.edu.my/id/eprint/7377/ http://umpir.ump.edu.my/id/eprint/7377/ http://umpir.ump.edu.my/id/eprint/7377/1/Heat_transfer_and_friction_factor_of_water_based_TiO2_and_SiO2_nanofluids_under_turbulent_flow_in_a_tube.pdf
first_indexed	2023-09-18T22:04:00Z
last_indexed	2023-09-18T22:04:00Z
_version_	1777414585794428928

Heat Transfer and Friction Factor of Water Based TiO2 and SiO2 Nanofluids Under Turbulent Flow In a Tube

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