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Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe

In the present study, a facile method is used for preparation of functionalized graphene nanoplatelets (f-GNP) nanofluids. The effective thermal conductivity, density, viscosity, specific heat capacity, overall heat transfer coefficient and friction factor for fully developed turbulent flow of f-GNP...

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Main Authors:	Yarmand, H., Gharehkhani, S., Shirazi, S.F.S., Amiri, A., Alehashem, M.S., Dahari, M., Kazi, S.N.
Format:	Article
Published:	Elsevier 2016
Subjects:	QD Chemistry TJ Mechanical engineering and machinery
Online Access:	http://eprints.um.edu.my/18798/ http://dx.doi.org/10.1016/j.enconman.2016.02.008
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spelling	my.um.eprints.187982018-05-31T05:49:13Z http://eprints.um.edu.my/18798/ Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe Yarmand, H. Gharehkhani, S. Shirazi, S.F.S. Amiri, A. Alehashem, M.S. Dahari, M. Kazi, S.N. QD Chemistry TJ Mechanical engineering and machinery In the present study, a facile method is used for preparation of functionalized graphene nanoplatelets (f-GNP) nanofluids. The effective thermal conductivity, density, viscosity, specific heat capacity, overall heat transfer coefficient and friction factor for fully developed turbulent flow of f-GNP/water nanofluids flowing through a square pipe at a constant heat flux were studied. f-GNP uniform nanocomposite was produced from a simple acid treatment reaction procedure. The surface characterization was performed by various techniques such as XRD, FESEM, FTIR and Raman. The f-GNP nanofluids were prepared by dispersing the functionalized nanoparticles in base fluid (water) without the assistance of a surfactant. As made nanofluids were stable for a long time and no sedimentation was observed. The experimental data for f-GNP nanofluids have shown significant enhancement in thermal conductivity and overall heat transfer coefficient in comparison to the corresponding water data. The percentage of enhancement is a function of weight concentration of nanoparticles and temperature. Highest improvement of overall heat transfer coefficient is 19.68% with 9.22% raise in friction factor for the weight concentration of 0.1% at a Reynolds number of 17,500 compared to those data from the base fluid. Elsevier 2016 Article PeerReviewed Yarmand, H. and Gharehkhani, S. and Shirazi, S.F.S. and Amiri, A. and Alehashem, M.S. and Dahari, M. and Kazi, S.N. (2016) Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe. Energy Conversion and Management, 114. pp. 38-49. ISSN 0196-8904 http://dx.doi.org/10.1016/j.enconman.2016.02.008 doi:10.1016/j.enconman.2016.02.008
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	QD Chemistry TJ Mechanical engineering and machinery
spellingShingle	QD Chemistry TJ Mechanical engineering and machinery Yarmand, H. Gharehkhani, S. Shirazi, S.F.S. Amiri, A. Alehashem, M.S. Dahari, M. Kazi, S.N. Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe
description	In the present study, a facile method is used for preparation of functionalized graphene nanoplatelets (f-GNP) nanofluids. The effective thermal conductivity, density, viscosity, specific heat capacity, overall heat transfer coefficient and friction factor for fully developed turbulent flow of f-GNP/water nanofluids flowing through a square pipe at a constant heat flux were studied. f-GNP uniform nanocomposite was produced from a simple acid treatment reaction procedure. The surface characterization was performed by various techniques such as XRD, FESEM, FTIR and Raman. The f-GNP nanofluids were prepared by dispersing the functionalized nanoparticles in base fluid (water) without the assistance of a surfactant. As made nanofluids were stable for a long time and no sedimentation was observed. The experimental data for f-GNP nanofluids have shown significant enhancement in thermal conductivity and overall heat transfer coefficient in comparison to the corresponding water data. The percentage of enhancement is a function of weight concentration of nanoparticles and temperature. Highest improvement of overall heat transfer coefficient is 19.68% with 9.22% raise in friction factor for the weight concentration of 0.1% at a Reynolds number of 17,500 compared to those data from the base fluid.
format	Article
author	Yarmand, H. Gharehkhani, S. Shirazi, S.F.S. Amiri, A. Alehashem, M.S. Dahari, M. Kazi, S.N.
author_facet	Yarmand, H. Gharehkhani, S. Shirazi, S.F.S. Amiri, A. Alehashem, M.S. Dahari, M. Kazi, S.N.
author_sort	Yarmand, H.
title	Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe
title_short	Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe
title_full	Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe
title_fullStr	Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe
title_full_unstemmed	Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe
title_sort	experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe
publisher	Elsevier
publishDate	2016
url	http://eprints.um.edu.my/18798/ http://dx.doi.org/10.1016/j.enconman.2016.02.008
_version_	1643690799236382720
score	13.211869

Experimental investigation of thermo-physical properties, convective heat transfer and pressure drop of functionalized graphene nanoplatelets aqueous nanofluid in a square heated pipe

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