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Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant

A nanofluid is a suspension of nano-sized particles dispersed in a base fluid. It is very much obligatory to know more about stability and thermal characteristics of such a nanofluid for their further use in practical applications. In this research, multiwalled carbon nanotubes (CNT) is dispersed in...

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Main Authors: Saba Rashidi,, Rashmi W.,, Luqman Chuah Abdullah,, Khalid M.,, Fakhrul-Razi Ahmadun,, M.Y. Faizah,
Format: Article
Language:English
Published: Penerbit Universiti Kebangsaan Malaysia 2017
Online Access:http://journalarticle.ukm.my/11117/1/02%20Saba%20Rashidi.pdf
http://journalarticle.ukm.my/11117/
http://www.ukm.my/jsm/malay_journals/jilid46bil7_2017/KandunganJilid46Bil7_2017.html
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spelling my-ukm.journal.111172017-12-21T01:56:47Z http://journalarticle.ukm.my/11117/ Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant Saba Rashidi, Rashmi W., Luqman Chuah Abdullah, Khalid M., Fakhrul-Razi Ahmadun, M.Y. Faizah, A nanofluid is a suspension of nano-sized particles dispersed in a base fluid. It is very much obligatory to know more about stability and thermal characteristics of such a nanofluid for their further use in practical applications. In this research, multiwalled carbon nanotubes (CNT) is dispersed in water. CNT dispersed in water is highly unstable and it sediments rapidly due to the Vander Waals force of attraction. Therefore, to overcome this limitation, xanthan gum (XG) was added which behave as a promising dispersant followed by 4 h water bath sonication. Experimental work includes stability studies using UV Vis spectroscopy with respect to CNT concentration (0.01 and 0.1 wt. %) and XG concentration (0.04 and 0.2 wt. %). The thermal conductivity of the most stable suspensions was measured using KD 2 Pro as a function of temperature (25-70°C) and CNT concentration. The optimum XG concentration was found for each CNT concentration studied. Thermal conductivity was observed to be strongly dependent on temperature and CNT concentration. The dispersion state of the CNT-water nanofluid is further examined using scanning electron microscope (SEM). In short, CNT nanofluids are found to be more suitable for heat transfer applications in many industries due to their enhanced thermal conductivity property. This work provides useful insight on the behavior of CNT nanofluids. Penerbit Universiti Kebangsaan Malaysia 2017-07 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/11117/1/02%20Saba%20Rashidi.pdf Saba Rashidi, and Rashmi W., and Luqman Chuah Abdullah, and Khalid M., and Fakhrul-Razi Ahmadun, and M.Y. Faizah, (2017) Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant. Sains Malaysiana, 46 (7). pp. 1017-1024. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid46bil7_2017/KandunganJilid46Bil7_2017.html
institution Universiti Kebangsaan Malaysia
building Perpustakaan Tun Sri Lanang Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Kebangsaan Malaysia
content_source UKM Journal Article Repository
url_provider http://journalarticle.ukm.my/
language English
description A nanofluid is a suspension of nano-sized particles dispersed in a base fluid. It is very much obligatory to know more about stability and thermal characteristics of such a nanofluid for their further use in practical applications. In this research, multiwalled carbon nanotubes (CNT) is dispersed in water. CNT dispersed in water is highly unstable and it sediments rapidly due to the Vander Waals force of attraction. Therefore, to overcome this limitation, xanthan gum (XG) was added which behave as a promising dispersant followed by 4 h water bath sonication. Experimental work includes stability studies using UV Vis spectroscopy with respect to CNT concentration (0.01 and 0.1 wt. %) and XG concentration (0.04 and 0.2 wt. %). The thermal conductivity of the most stable suspensions was measured using KD 2 Pro as a function of temperature (25-70°C) and CNT concentration. The optimum XG concentration was found for each CNT concentration studied. Thermal conductivity was observed to be strongly dependent on temperature and CNT concentration. The dispersion state of the CNT-water nanofluid is further examined using scanning electron microscope (SEM). In short, CNT nanofluids are found to be more suitable for heat transfer applications in many industries due to their enhanced thermal conductivity property. This work provides useful insight on the behavior of CNT nanofluids.
format Article
author Saba Rashidi,
Rashmi W.,
Luqman Chuah Abdullah,
Khalid M.,
Fakhrul-Razi Ahmadun,
M.Y. Faizah,
spellingShingle Saba Rashidi,
Rashmi W.,
Luqman Chuah Abdullah,
Khalid M.,
Fakhrul-Razi Ahmadun,
M.Y. Faizah,
Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
author_facet Saba Rashidi,
Rashmi W.,
Luqman Chuah Abdullah,
Khalid M.,
Fakhrul-Razi Ahmadun,
M.Y. Faizah,
author_sort Saba Rashidi,
title Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_short Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_full Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_fullStr Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_full_unstemmed Thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
title_sort thermal stability and conductivity of carbon nanotube nanofluid using xanthan gum as surfactant
publisher Penerbit Universiti Kebangsaan Malaysia
publishDate 2017
url http://journalarticle.ukm.my/11117/1/02%20Saba%20Rashidi.pdf
http://journalarticle.ukm.my/11117/
http://www.ukm.my/jsm/malay_journals/jilid46bil7_2017/KandunganJilid46Bil7_2017.html
_version_ 1643738376674738176
score 13.211869

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