eprintid: 13701
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/37/01
datestamp: 2023-11-10 03:28:16
lastmod: 2023-11-10 03:28:16
status_changed: 2023-11-10 01:51:48
type: article
metadata_visibility: show
creators_name: Ong, Y.S.
creators_name: Shaari, K.Z.K.
creators_name: Laziz, A.M.
creators_name: Lu, I.L.
creators_name: Samsudin, M.F.R.
creators_name: Sufian, S.
title: Thermal performance of graphene oxide nanofluid in microchannel heat exchanger
ispublished: pub
keywords: Graphene; Heat exchangers; Heat transfer; Microchannels; Nanofluidics; Nanoparticles; Synthesis (chemical); Viscosity, Heat transfer applications; High thermal conductivity; Micro-channel heat exchangers; Nanoparticle loadings; Rapid growth; Temperature-dependent thermal conductivity; Thermal Performance; Thermal solution, Thermal conductivity of liquids
note: cited By 5
abstract: Device miniaturization and complex work load due to rapid growth in technologies have imposed great challenges in aspects of thermal management to prevent overheating. Nanofluids are emerging as thermal solutions due to their enhanced thermal properties. Recently, graphene oxide (GO) nanofluids (NFs) has been studied and found to have high thermal conductivity. However, their potential in microchannel heat exchangers (MCHEs) remains unknown. This study aims to investigate the thermal performance of GO-NFs in MCHEs. GO nanoparticles were synthesized and confirmed using X-ray diffraction, whereas GO-NFs (0.02-0.1 wt.) were prepared and analyzed in terms of viscosity and thermal conductivity. The results showed that the minor addition of GO nanoparticles did not significantly affect the viscosity of GO-NFs, whereas the thermal conductivity was remarkably enhanced. This indicates that GO-NFs are very promising since they are able to improve the thermal performance of MCHEs with negligible impact on the pressure drop at low nanoparticle loading. The thermal performance of GO-NFs in MCHEs was investigated at different inlet flow rates (0.5-2 mL/min) and set temperatures (50-90°C). At a given set temperature, GO-NFs showed excellent thermal performance compared to water due to their higher thermal conductivity. Furthermore, GO-NFs showed better thermal performance at higher set temperatures due to their higher thermal conductivity at higher temperatures. This temperature-dependent thermal conductivity of GO-NFs is essential especially in applications involving higher temperatures. Furthermore, no clogging of GO nanoparticles in microchannels was observed at minor GO loadings (0.02-0.1 wt.). These results indicate that GO-NFs are very effective in heat transfer applications compared to water. © 2020 by Begell House, Inc.
date: 2020
publisher: Begell House Inc.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85096419946&doi=10.1615%2fjenhheattransf.2020033046&partnerID=40&md5=2130436773bebeb00cb37d90a4ed468d
id_number: 10.1615/jenhheattransf.2020033046
full_text_status: none
publication: Journal of Enhanced Heat Transfer
volume: 27
number: 5
pagerange: 439-461
refereed: TRUE
issn: 10655131
citation:   Ong, Y.S. and Shaari, K.Z.K. and Laziz, A.M. and Lu, I.L. and Samsudin, M.F.R. and Sufian, S.  (2020) Thermal performance of graphene oxide nanofluid in microchannel heat exchanger.  Journal of Enhanced Heat Transfer, 27 (5).  pp. 439-461.  ISSN 10655131