Evaluation of thermal conductivity, stability and viscosity of two dimensional hexagonal boron nitride nanofluids

Shah, Syed Nadeem Abbas and Shahabuddin, Syed and Sabri, Mohd Faizul Mohd (2020) Evaluation of thermal conductivity, stability and viscosity of two dimensional hexagonal boron nitride nanofluids. International Journal of Advanced Science and Technology, 29 (1). pp. 304-317. ISSN 2005-4238

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Official URL: http://sersc.org/journals/index.php/IJAST/article/...

Abstract

Being a new generation of heat transfer fluids, nanofluids have attracted research community due to the irremarkable thermo-physical properties. This paper presents the experimental investigation on the thermal conductivity (from 25 °C to 50 °C), stability, and viscosity (at ambient conditions) analysis of two-dimensional hexagonal boron it ride (2D, h-BN) nanofluids using ethylene glycol as base fluid. Stable nanofluids were prepared using the two-step method at various volume concentration of nanomaterial and dispersant. The stability and particle size distribution is determined using dynamic light scattering (DLS) and electro phoretic light scattering (ELS) techniques, respectively. The h-BN nanofluids showed anomalous thermal conductivity enhancement of about 30% without dispersant at 50 °C whereas maximum reduction in viscosity is observed to be about 7.4% at ambient temperature for h-BN nanofluids with dispersant. This approach could be further extended to investigate the role of surfactants on rheology of nano fluids as a convenient and economical strategy for commercial use. © 2019 SERSC.

Item Type: Article
Uncontrolled Keywords: H-BN; Nanofluids; Stability; Thermal conductivity; Viscosity
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 24 Jun 2020 03:42
Last Modified: 24 Jun 2020 03:42
URI: http://eprints.um.edu.my/id/eprint/24971

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