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

Authors

  • A. Abdullah Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100, Durian Tunggal, Melaka, Malaysia
  • I.S. Mohamad Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100, Durian Tunggal, Melaka, Malaysia
  • A.Y. Bani Hashim Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100, Durian Tunggal, Melaka, Malaysia
  • N. Abdullah Centre for Foundation Studies, Universiti Pertahanan Nasional Malaysia, Kem Sungai Besi, 57000, Kuala Lumpur, Malaysia
  • P.B. Wei Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100, Durian Tunggal, Melaka, Malaysia
  • M.H. Md. Isa Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100, Durian Tunggal, Melaka, Malaysia
  • S. Zainal Abidin Faculty of Mechanical Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100, Durian Tunggal, Melaka, Malaysia

DOI:

https://doi.org/10.15282/jmes.10.3.2016.4.0210

Keywords:

Nanofluids; thermal conductivity; viscosity.

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.

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Published

2016-12-31

How to Cite

[1]
A. Abdullah, “Thermal conductivity and viscosity of deionized water and ethylene glycol-based nanofluids”, J. Mech. Eng. Sci., vol. 10, no. 3, pp. 2249–2261, Dec. 2016.

Issue

Vol. 10 No. 3 (2016): December 2016

Section

Article

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Copyright (c) 2016 The Author(s)

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This work is licensed under a Creative Commons Attribution 4.0 International License.

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