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Experimental and numerical investigation of heat transfer in CNT nanofluids

Nanofluids with their enhanced thermal conductivity are believed to be a promising coolant in heat transfer applications. In this study, carbon nanotube (CNT) nanofluids of 0.01 wt%, stabilised by 1.0 wt% gum arabic were used as a cooling liquid in a concentric tube laminar flow heat exchanger. The...

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Main Authors:	Rashmi, W., Khalid, M., Ismail, Ahmad Faris, Saidur, R., Rashid, A. K.
Format:	Article
Language:	English
Published:	Taylor & Francis 2013
Subjects:	TA349 Mechanics of engineering. Applied mechanics TP155 Chemical engineering
Online Access:	http://irep.iium.edu.my/36777/1/Experimental_and_numerical_investigation_of_heat_transfer_in_CNT_nanofluids.pdf http://irep.iium.edu.my/36777/ http://www.tandfonline.com/doi/abs/10.1080/17458080.2013.848296
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spelling	my.iium.irep.367772020-11-05T01:15:01Z http://irep.iium.edu.my/36777/ Experimental and numerical investigation of heat transfer in CNT nanofluids Rashmi, W. Khalid, M. Ismail, Ahmad Faris Saidur, R. Rashid, A. K. TA349 Mechanics of engineering. Applied mechanics TP155 Chemical engineering Nanofluids with their enhanced thermal conductivity are believed to be a promising coolant in heat transfer applications. In this study, carbon nanotube (CNT) nanofluids of 0.01 wt%, stabilised by 1.0 wt% gum arabic were used as a cooling liquid in a concentric tube laminar flow heat exchanger. The flow rate of cold fluid varied from 10 to 50 g/s. Both experimental and numerical simulations were carried out to determine the heat transfer enhancement using CNT nanofluids. Computational fluid dynamics (CFD) simulations were carried out using Fluent v 6.3 by assuming single-phase approximation. Thermal conductivity, density and rheology of the nanofluid were also measured as a function of temperature. The results showed thermal conductivity enhancement from 4% to 125% and nearly 70% enhancement in heat transfer with increase in flow rate. Numerical results exhibited good agreement with the experimental results with a deviation of 3%. CNT nanofluids at 0.01 wt% CNTs showed Newtonian behaviour with no significant increase in the density. Taylor & Francis 2013-10-18 Article PeerReviewed application/pdf en http://irep.iium.edu.my/36777/1/Experimental_and_numerical_investigation_of_heat_transfer_in_CNT_nanofluids.pdf Rashmi, W. and Khalid, M. and Ismail, Ahmad Faris and Saidur, R. and Rashid, A. K. (2013) Experimental and numerical investigation of heat transfer in CNT nanofluids. Journal of Experimental Nanoscience, 10 (7). pp. 1-19. ISSN 1745-8099 http://www.tandfonline.com/doi/abs/10.1080/17458080.2013.848296 10.1080/17458080.2013.848296
institution	Universiti Islam Antarabangsa Malaysia
building	IIUM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	International Islamic University Malaysia
content_source	IIUM Repository (IREP)
url_provider	http://irep.iium.edu.my/
language	English
topic	TA349 Mechanics of engineering. Applied mechanics TP155 Chemical engineering
spellingShingle	TA349 Mechanics of engineering. Applied mechanics TP155 Chemical engineering Rashmi, W. Khalid, M. Ismail, Ahmad Faris Saidur, R. Rashid, A. K. Experimental and numerical investigation of heat transfer in CNT nanofluids
description	Nanofluids with their enhanced thermal conductivity are believed to be a promising coolant in heat transfer applications. In this study, carbon nanotube (CNT) nanofluids of 0.01 wt%, stabilised by 1.0 wt% gum arabic were used as a cooling liquid in a concentric tube laminar flow heat exchanger. The flow rate of cold fluid varied from 10 to 50 g/s. Both experimental and numerical simulations were carried out to determine the heat transfer enhancement using CNT nanofluids. Computational fluid dynamics (CFD) simulations were carried out using Fluent v 6.3 by assuming single-phase approximation. Thermal conductivity, density and rheology of the nanofluid were also measured as a function of temperature. The results showed thermal conductivity enhancement from 4% to 125% and nearly 70% enhancement in heat transfer with increase in flow rate. Numerical results exhibited good agreement with the experimental results with a deviation of 3%. CNT nanofluids at 0.01 wt% CNTs showed Newtonian behaviour with no significant increase in the density.
format	Article
author	Rashmi, W. Khalid, M. Ismail, Ahmad Faris Saidur, R. Rashid, A. K.
author_facet	Rashmi, W. Khalid, M. Ismail, Ahmad Faris Saidur, R. Rashid, A. K.
author_sort	Rashmi, W.
title	Experimental and numerical investigation of heat transfer in CNT nanofluids
title_short	Experimental and numerical investigation of heat transfer in CNT nanofluids
title_full	Experimental and numerical investigation of heat transfer in CNT nanofluids
title_fullStr	Experimental and numerical investigation of heat transfer in CNT nanofluids
title_full_unstemmed	Experimental and numerical investigation of heat transfer in CNT nanofluids
title_sort	experimental and numerical investigation of heat transfer in cnt nanofluids
publisher	Taylor & Francis
publishDate	2013
url	http://irep.iium.edu.my/36777/1/Experimental_and_numerical_investigation_of_heat_transfer_in_CNT_nanofluids.pdf http://irep.iium.edu.my/36777/ http://www.tandfonline.com/doi/abs/10.1080/17458080.2013.848296
_version_	1683230332359278592
score	13.211869

Experimental and numerical investigation of heat transfer in CNT nanofluids

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