Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS

Heat dissipation of various electrical and electronic devices has been a significant concern in the current years of modernisation. Many researchers proved that a liquid-cooled microchannel heat sink (MCHS) is an effective way of removing high heat load. Due to ionic liquids� unique properties suc...

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Main Authors: Bakthavatchalam, B., Habib, K., Hussein, O.A., Saidur, R., Irshad, K.
Format: Article
Institution: Universiti Teknologi Petronas
Record Id / ISBN-0: utp-eprints.23349 /
Published: Universiti Malaysia Pahang 2020
Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103681708&doi=10.15282%2fijame.17.4.2020.06.0629&partnerID=40&md5=7a25d93f9b2ec5ff7542be24b695563a
http://eprints.utp.edu.my/23349/
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spelling utp-eprints.233492021-08-19T07:24:05Z Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS Bakthavatchalam, B. Habib, K. Hussein, O.A. Saidur, R. Irshad, K. Heat dissipation of various electrical and electronic devices has been a significant concern in the current years of modernisation. Many researchers proved that a liquid-cooled microchannel heat sink (MCHS) is an effective way of removing high heat load. Due to ionic liquids� unique properties such as negligible volatility, non-flammability, high thermal stability, and ionic conductivity, this liquid is combined with nanofluids to synthesise a new class of potential fluids termed Ionanofluids (ionic liquid-based nanofluids). In this research, a numerical simulation of fluid flow and heat transfer characteristics of MWCNT (Multiwalled Carbon Nanotubes) based Ionanofluids as a coolant in a rectangular-shaped microchannel heat sink is analysed. The Two-step method is used for preparing the studied Ionanofluids consisting of 0.5 wt. of MWCNT nanoparticles ultra-sonicated with a mixture of propylene glycol and 1-Butyl-3-methylimidazolium chloride (BmimCl-ionic liquid) fluids. Copper micro channelled heat sink comprising 1 m channel height, 25 µm of channel diameter, and 0.7 m channel width is modelled and simulated with ANSYS-Fluent. The results showed that the heat transfer coefficient increases about 11.4% while the thermal resistance decreases about 15.18% by using the proposed ionanofluids with the concentration of 0.5 wt.% at Re=2000 compared with that of an MCHS with propylene glycol. Moreover, the pressure drop along the studied MCHS increased up to a maximum of 30 kPa for higher heat gradients. Ionanofluids decreased the thermal resistance and temperature difference between the heated surface of the MCHS and Ionanofluids inlet to a greater extent when validated with pure base fluid and previous studies. From the simulated results, a better cooling performance is observed with Ionanofluids compared to pure propylene glycol (PG) for the proposed microchannel heat sink. © The Authors 2020. Published by Penerbit UMP. This is an open access article under the CC BY license. Universiti Malaysia Pahang 2020 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103681708&doi=10.15282%2fijame.17.4.2020.06.0629&partnerID=40&md5=7a25d93f9b2ec5ff7542be24b695563a Bakthavatchalam, B. and Habib, K. and Hussein, O.A. and Saidur, R. and Irshad, K. (2020) Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS. International Journal of Automotive and Mechanical Engineering, 17 (4). pp. 8326-8337. http://eprints.utp.edu.my/23349/
institution Universiti Teknologi Petronas
collection UTP Institutional Repository
description Heat dissipation of various electrical and electronic devices has been a significant concern in the current years of modernisation. Many researchers proved that a liquid-cooled microchannel heat sink (MCHS) is an effective way of removing high heat load. Due to ionic liquids� unique properties such as negligible volatility, non-flammability, high thermal stability, and ionic conductivity, this liquid is combined with nanofluids to synthesise a new class of potential fluids termed Ionanofluids (ionic liquid-based nanofluids). In this research, a numerical simulation of fluid flow and heat transfer characteristics of MWCNT (Multiwalled Carbon Nanotubes) based Ionanofluids as a coolant in a rectangular-shaped microchannel heat sink is analysed. The Two-step method is used for preparing the studied Ionanofluids consisting of 0.5 wt. of MWCNT nanoparticles ultra-sonicated with a mixture of propylene glycol and 1-Butyl-3-methylimidazolium chloride (BmimCl-ionic liquid) fluids. Copper micro channelled heat sink comprising 1 m channel height, 25 µm of channel diameter, and 0.7 m channel width is modelled and simulated with ANSYS-Fluent. The results showed that the heat transfer coefficient increases about 11.4% while the thermal resistance decreases about 15.18% by using the proposed ionanofluids with the concentration of 0.5 wt.% at Re=2000 compared with that of an MCHS with propylene glycol. Moreover, the pressure drop along the studied MCHS increased up to a maximum of 30 kPa for higher heat gradients. Ionanofluids decreased the thermal resistance and temperature difference between the heated surface of the MCHS and Ionanofluids inlet to a greater extent when validated with pure base fluid and previous studies. From the simulated results, a better cooling performance is observed with Ionanofluids compared to pure propylene glycol (PG) for the proposed microchannel heat sink. © The Authors 2020. Published by Penerbit UMP. This is an open access article under the CC BY license.
format Article
author Bakthavatchalam, B.
Habib, K.
Hussein, O.A.
Saidur, R.
Irshad, K.
spellingShingle Bakthavatchalam, B.
Habib, K.
Hussein, O.A.
Saidur, R.
Irshad, K.
Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS
author_sort Bakthavatchalam, B.
title Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS
title_short Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS
title_full Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS
title_fullStr Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS
title_full_unstemmed Heat Transfer Rate Optimisation of Ionanofluid Based Heat Sink Using ANSYS
title_sort heat transfer rate optimisation of ionanofluid based heat sink using ansys
publisher Universiti Malaysia Pahang
publishDate 2020
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85103681708&doi=10.15282%2fijame.17.4.2020.06.0629&partnerID=40&md5=7a25d93f9b2ec5ff7542be24b695563a
http://eprints.utp.edu.my/23349/
_version_ 1741196661590327296
score 11.62408

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