Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids

The thermo physical properties such as thermal conductivity, viscosity, density and specific heat are essential for the determination of nanofluid heat transfer coefficients. Experimental data indicate the nanofluid thermal conductivity to increase with temperature and decrease with particle size. H...

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Main Authors:	Azmi, W. H., Sharma, K. V.
Format:	Conference or Workshop Item
Language:	English
Published:	2010
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/1567/ http://umpir.ump.edu.my/id/eprint/1567/1/51_NCMER_057.pdf

id	ump-1567
recordtype	eprints
spelling	ump-15672018-01-23T07:54:31Z http://umpir.ump.edu.my/id/eprint/1567/ Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids Azmi, W. H. Sharma, K. V. TJ Mechanical engineering and machinery The thermo physical properties such as thermal conductivity, viscosity, density and specific heat are essential for the determination of nanofluid heat transfer coefficients. Experimental data indicate the nanofluid thermal conductivity to increase with temperature and decrease with particle size. However, viscosity is observed to decrease with temperature and increase with particle size. This opposing nature of the two properties along with the nanofluid specific heat which decreases with both temperature and particle size have a significant influence on the values of nanofluid Prandtl number. The forced convective heat transfer coefficients are dependent on Reynolds and Prandtl numbers which in turn are dependent on the nanofluid properties. Regression equations have been developed as a function of concentration, temperature and particle size using the experimental data available in literature useful in the estimation of convective heat transfer coefficients. The analyses of these parameters indicate that the nanofluid heat transfer coefficient need not necessarily predict higher values of heat transfer coefficients when compared with water at all concentrations, contrary to the general expectations. The condition for heat transfer enhancement is explained. 2010 Conference or Workshop Item PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/1567/1/51_NCMER_057.pdf Azmi, W. H. and Sharma, K. V. (2010) Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids. In: National Conference in Mechanical Engineering Research and Postgraduate Students (1st NCMER 2010), 26-27 May 2010 , FKM Conference Hall, UMP, Kuantan, Pahang, Malaysia. pp. 502-515.. ISBN 978-967-5080-9501
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. Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids
description	The thermo physical properties such as thermal conductivity, viscosity, density and specific heat are essential for the determination of nanofluid heat transfer coefficients. Experimental data indicate the nanofluid thermal conductivity to increase with temperature and decrease with particle size. However, viscosity is observed to decrease with temperature and increase with particle size. This opposing nature of the two properties along with the nanofluid specific heat which decreases with both temperature and particle size have a significant influence on the values of nanofluid Prandtl number. The forced convective heat transfer coefficients are dependent on Reynolds and Prandtl numbers which in turn are dependent on the nanofluid properties. Regression equations have been developed as a function of concentration, temperature and particle size using the experimental data available in literature useful in the estimation of convective heat transfer coefficients. The analyses of these parameters indicate that the nanofluid heat transfer coefficient need not necessarily predict higher values of heat transfer coefficients when compared with water at all concentrations, contrary to the general expectations. The condition for heat transfer enhancement is explained.
format	Conference or Workshop Item
author	Azmi, W. H. Sharma, K. V.
author_facet	Azmi, W. H. Sharma, K. V.
author_sort	Azmi, W. H.
title	Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids
title_short	Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids
title_full	Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids
title_fullStr	Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids
title_full_unstemmed	Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids
title_sort	influence of certain thermo-physical properties on prandtl number of water based nanofluids
publishDate	2010
url	http://umpir.ump.edu.my/id/eprint/1567/ http://umpir.ump.edu.my/id/eprint/1567/1/51_NCMER_057.pdf
first_indexed	2023-09-18T21:54:47Z
last_indexed	2023-09-18T21:54:47Z
_version_	1777414006843113472

Influence Of Certain Thermo-Physical Properties On Prandtl Number Of Water Based Nanofluids

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