Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids

In this work Graphene (Gr) flake was exfoliated using the solvents N-Methyl-2-Pyrrolidone (NMP) and processed by systematic centrifugation. Raman spectroscopy and Field Emission Scanning Electron Microscopy (FESEM) analysis were conducted for the characterization of as fabricated Gr flakes. Exfoliat...

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Main Authors:	Arifutzzaman, A. K. H. A. Ma, Ismail, Ahmad Faris, Yaacob, Iskandar Idris, Khan, Ahsan Ali, Alam, Md. Zahangir
Format:	Article
Language:	English
Published:	Research India Publications 2018
Subjects:	TS200 Metal manufactures. Metalworking
Online Access:	http://irep.iium.edu.my/64245/ http://irep.iium.edu.my/64245/ http://irep.iium.edu.my/64245/1/64245_Experimental%20Investigation%20and%20Effective%20Medium.pdf

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spelling	iium-642452018-06-28T06:35:04Z http://irep.iium.edu.my/64245/ Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids Arifutzzaman, A. K. H. A. Ma Ismail, Ahmad Faris Yaacob, Iskandar Idris Khan, Ahsan Ali Alam, Md. Zahangir TS200 Metal manufactures. Metalworking In this work Graphene (Gr) flake was exfoliated using the solvents N-Methyl-2-Pyrrolidone (NMP) and processed by systematic centrifugation. Raman spectroscopy and Field Emission Scanning Electron Microscopy (FESEM) analysis were conducted for the characterization of as fabricated Gr flakes. Exfoliated Gr was re-dispersed into the deionized water (DW) with the aid of vacuum filtration process. Then five different nanofluid samples were prepared by dispersing Gr in DW (Gr/DW). In these samples volume fractions of Gr were varied from 0.10 to 0.30 % in DW. Systematic thermal conductivity (TC) measurements were conducted separately on the prepared Gr dispersed nanofluid samples. Prediction of TC enhancements for Gr/DW nanofluids were explained by analytical explanation with the modification of effective medium approach (EMA). In the approximation low filling of Gr flake and its random orientation were taken into consideration with the effect of ultrathin Gr fake’s basal plane TC. The model predictions agreed very well with the measured TCs of as produced exfoliated Gr/DW nanofluids. It was shown that, using exfoliated Gr flakes of extremely wide basal plane with negligible thickness and non-flat or crumpled ratio was an efficient factor to obtain the considerably better agreement with the TC enhancements of Gr/DW nanofluids. Research India Publications 2018 Article PeerReviewed application/pdf en http://irep.iium.edu.my/64245/1/64245_Experimental%20Investigation%20and%20Effective%20Medium.pdf Arifutzzaman, A. K. H. A. Ma and Ismail, Ahmad Faris and Yaacob, Iskandar Idris and Khan, Ahsan Ali and Alam, Md. Zahangir (2018) Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids. International Journal of Applied Engineering Research, 13 (10). pp. 7477-7487. ISSN 0973-4562 https://www.ripublication.com/ijaer18/ijaerv13n10_34.pdf
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TS200 Metal manufactures. Metalworking
spellingShingle	TS200 Metal manufactures. Metalworking Arifutzzaman, A. K. H. A. Ma Ismail, Ahmad Faris Yaacob, Iskandar Idris Khan, Ahsan Ali Alam, Md. Zahangir Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids
description	In this work Graphene (Gr) flake was exfoliated using the solvents N-Methyl-2-Pyrrolidone (NMP) and processed by systematic centrifugation. Raman spectroscopy and Field Emission Scanning Electron Microscopy (FESEM) analysis were conducted for the characterization of as fabricated Gr flakes. Exfoliated Gr was re-dispersed into the deionized water (DW) with the aid of vacuum filtration process. Then five different nanofluid samples were prepared by dispersing Gr in DW (Gr/DW). In these samples volume fractions of Gr were varied from 0.10 to 0.30 % in DW. Systematic thermal conductivity (TC) measurements were conducted separately on the prepared Gr dispersed nanofluid samples. Prediction of TC enhancements for Gr/DW nanofluids were explained by analytical explanation with the modification of effective medium approach (EMA). In the approximation low filling of Gr flake and its random orientation were taken into consideration with the effect of ultrathin Gr fake’s basal plane TC. The model predictions agreed very well with the measured TCs of as produced exfoliated Gr/DW nanofluids. It was shown that, using exfoliated Gr flakes of extremely wide basal plane with negligible thickness and non-flat or crumpled ratio was an efficient factor to obtain the considerably better agreement with the TC enhancements of Gr/DW nanofluids.
format	Article
author	Arifutzzaman, A. K. H. A. Ma Ismail, Ahmad Faris Yaacob, Iskandar Idris Khan, Ahsan Ali Alam, Md. Zahangir
author_facet	Arifutzzaman, A. K. H. A. Ma Ismail, Ahmad Faris Yaacob, Iskandar Idris Khan, Ahsan Ali Alam, Md. Zahangir
author_sort	Arifutzzaman, A. K. H. A. Ma
title	Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids
title_short	Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids
title_full	Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids
title_fullStr	Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids
title_full_unstemmed	Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids
title_sort	experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated graphene nanofluids
publisher	Research India Publications
publishDate	2018
url	http://irep.iium.edu.my/64245/ http://irep.iium.edu.my/64245/ http://irep.iium.edu.my/64245/1/64245_Experimental%20Investigation%20and%20Effective%20Medium.pdf
first_indexed	2023-09-18T21:31:09Z
last_indexed	2023-09-18T21:31:09Z
_version_	1777412519015481344

Experimental investigation and effective medium approximation of thermal conductivity of water based exfoliated Graphene nanofluids

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