Thermal conductivity and viscosity of deionised water and ethylene glycol-based nanofluids

Abdullah, Amirah and Mohamad, Imran Syakir and Bani Hashim, Ahmad Yusairi and Abdullah, Norli and Poh, Ban Wei and Md Isa, Mohamed Hafiz and Zainal Abidin, Syazwani (2016) Thermal conductivity and viscosity of deionised water and ethylene glycol-based nanofluids. Journal of Mechanical Engineering and Sciences (JMES), 10. pp. 2249-2261. ISSN 2289-4659

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Abstract

This paper focused on thermal conductivity and viscosity of deionised water and ethylene glycol-based nanofluids at three different temperatures (6C, 25C and 40C). For the preparation of nanofluids, a two-step method, comprised of homogenisation and sonication, was used on a mixture of MWCNT-OH, PVP and the base fluid. The results revealed that thermal conductivity was enhanced by about 8.86% for 0.8 wt% deionised water-based MWCNT-OH nanofluid, and by 5.37% for 0.2 wt% ethylene glycol-based MWCNT-OH nanofluid. Meanwhile, in viscosity test, the highest temperature of 40C exhibited lowest viscosity. This phenomenon happened only with ethylene glycol-based nanofluid, whilst the data on the viscosity of deionised water-based nanofluid was inconsistent at certain nanofluid concentrations . In conclusion, addition of MWCNT-OH into base fluid enhanced base fluid performance , giving it the potential to be used in cooling system applications. Keywords: Nanofluids; thermal conductivity; viscosity.

Item Type: Article
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Mechanical Engineering
Depositing User: Mr Imran Syakir Mohamad
Date Deposited: 08 Nov 2017 08:13
Last Modified: 08 Nov 2017 08:13
URI: http://eprints.utem.edu.my/id/eprint/19947
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