Rights statement: This is the author’s version of a work that was accepted for publication in International Communications in Heat and Mass Transfer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Communications in Heat and Mass Transfer, 133, 2022 DOI: 10.1016/j.icheatmasstransfer.2022.105922
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Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Hybrid nanocoolant for enhanced heat transfer performance in vehicle cooling system
AU - Xian, H.W.
AU - Sidik, N.A.C.
AU - Saidur, R.
N1 - This is the author’s version of a work that was accepted for publication in International Communications in Heat and Mass Transfer. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Communications in Heat and Mass Transfer, 133, 2022 DOI: 10.1016/j.icheatmasstransfer.2022.105922
PY - 2022/4/30
Y1 - 2022/4/30
N2 - An enormous amount of heat generated from a vehicle engine could be removed fractionally by using a radiator. The struggle to maintain efficient heat exchange in a vehicle cooling system is arduous as both active and passive methods require time to catch up with high-power engine technologies. This study reported the heat transfer performance of a novel hybrid nanocoolant with various mixing ratios. The hybrid nanocoolant consisted of carboxyl-functionalised graphene nanoplatelets (CGnP) and titanium dioxide (TiO2) nanoparticles in a mixture of distilled water and ethylene glycol. The thermal performance of the hybrid nanocoolant was conducted using a test rig equipped with a crossflow type radiator. The effect of different hybrid mixing ratios, Reynolds number, and air inlet velocity on heat transfer performance was studied. The Nusselt number obtained with distilled water and base coolant was close to the Dehghandokht's and Shah-London's correlations. When CGnP-TiO2 (70:30) with 0.1 wt% concentration was mixed into the base coolant, 4.94%, 35.87%, and 20.48% of maximum increments were observed for Nusselt number, overall heat transfer coefficient, and effectiveness of radiator, respectively. The maximum error in estimating heat transfer performance using proposed correlations was less than 8%. It can be concluded that hybrid nanocoolant with different mixing ratios significantly affects heat transfer performance. This characteristic is vital for determining the best possible attributes in various nanocomposite combinations. © 2022 Elsevier Ltd
AB - An enormous amount of heat generated from a vehicle engine could be removed fractionally by using a radiator. The struggle to maintain efficient heat exchange in a vehicle cooling system is arduous as both active and passive methods require time to catch up with high-power engine technologies. This study reported the heat transfer performance of a novel hybrid nanocoolant with various mixing ratios. The hybrid nanocoolant consisted of carboxyl-functionalised graphene nanoplatelets (CGnP) and titanium dioxide (TiO2) nanoparticles in a mixture of distilled water and ethylene glycol. The thermal performance of the hybrid nanocoolant was conducted using a test rig equipped with a crossflow type radiator. The effect of different hybrid mixing ratios, Reynolds number, and air inlet velocity on heat transfer performance was studied. The Nusselt number obtained with distilled water and base coolant was close to the Dehghandokht's and Shah-London's correlations. When CGnP-TiO2 (70:30) with 0.1 wt% concentration was mixed into the base coolant, 4.94%, 35.87%, and 20.48% of maximum increments were observed for Nusselt number, overall heat transfer coefficient, and effectiveness of radiator, respectively. The maximum error in estimating heat transfer performance using proposed correlations was less than 8%. It can be concluded that hybrid nanocoolant with different mixing ratios significantly affects heat transfer performance. This characteristic is vital for determining the best possible attributes in various nanocomposite combinations. © 2022 Elsevier Ltd
KW - Correlation
KW - Heat transfer
KW - Hybrid nanofluid
KW - Optimum
KW - Radiator
KW - Air
KW - Automobile cooling systems
KW - Coolants
KW - Cooling
KW - Engines
KW - Ethylene
KW - Ethylene glycol
KW - Mixing
KW - Nanofluidics
KW - Radiators
KW - Reynolds number
KW - Thermoelectric equipment
KW - Vehicle performance
KW - Carboxyl-functionalized
KW - Distilled water
KW - Functionalized graphene
KW - Graphene nanoplatelets
KW - Heat transfer performance
KW - Mixing ratios
KW - Vehicle cooling
KW - Titanium dioxide
U2 - 10.1016/j.icheatmasstransfer.2022.105922
DO - 10.1016/j.icheatmasstransfer.2022.105922
M3 - Journal article
VL - 133
JO - International Communications in Heat and Mass Transfer
JF - International Communications in Heat and Mass Transfer
M1 - 105922
ER -