Staff View: Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study

Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study

This research explores how incorporating graphene oxide (GO) into red mud (RM) creates a superior nanomaterial for heat transfer applications. RM's inherent stability and thermal conductivity (TC), stemming from its metal oxide composition, are further amplified by this hybrid nano-composite. T...

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Main Authors:	Kanti P.K., Vicki Wanatasanappan V., Mahjoub Said N., Sharma K.V.
Other Authors:	57216493630
Format:	Article
Published:	Elsevier B.V. 2025
Subjects:	Entropy Graphene Heat convection Heat flux Nanocomposites Nanofluidics Nanoparticles Reynolds number Thermal conductivity Entropy generation Exergy Analysis Graphene oxides Irreversibility Nanofluids Nanoparticle concentrations Performance Performance indices Red mud Red mud nanofluid Exergy
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spelling	my.uniten.dspace-362962025-03-03T15:41:50Z Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study Kanti P.K. Vicki Wanatasanappan V. Mahjoub Said N. Sharma K.V. 57216493630 58093867000 57217198447 8417385700 Entropy Graphene Heat convection Heat flux Nanocomposites Nanofluidics Nanoparticles Reynolds number Thermal conductivity Entropy generation Exergy Analysis Graphene oxides Irreversibility Nanofluids Nanoparticle concentrations Performance Performance indices Red mud Red mud nanofluid Exergy This research explores how incorporating graphene oxide (GO) into red mud (RM) creates a superior nanomaterial for heat transfer applications. RM's inherent stability and thermal conductivity (TC), stemming from its metal oxide composition, are further amplified by this hybrid nano-composite. The study primarily investigates the thermal performance of water-based RM mono nanofluid and hybrid RM + GO (50:50) nanofluids (HNFs) at nanoparticle concentrations of 0.1?0.75 vol%. An experimental setup consisting of a copper tube under turbulent flow conditions with a constant heat flux and a bulk fluid temperature of 60 �C was used to test the performance of HNF. Various techniques are used to characterize the nanoparticles (NPs), and evaluate the thermophysical properties of nanofluids. The experimental data reveal that the heat transfer coefficient (HTC) increases with higher inlet fluid velocity and nanoparticle concentrations. Notably, the HNF demonstrates a significant improvement of 47.2 % in Nusselt number (Nu) and a 13.6 % rise in pressure drop (?p) compared to base fluid, at 0.75 vol%. The least entropy generation number (EGN) is obtained for the HNF (0.0049) compared to the RM NF (0.00583) at a concentration of 0.75 vol%. The exergy efficiency improves with an increase in concentration and Reynolds number (Re). Additionally, the study identifies the performance index (PI) of NFs and modelled correlations for estimating the Nu and friction factor (f) within the investigated concentration range. ? 2024 Elsevier B.V. Final 2025-03-03T07:41:50Z 2025-03-03T07:41:50Z 2024 Article 10.1016/j.molliq.2024.125571 2-s2.0-85199912189 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85199912189&doi=10.1016%2fj.molliq.2024.125571&partnerID=40&md5=7fd4c46fc8b15df6c2e7e776b3c45c7a https://irepository.uniten.edu.my/handle/123456789/36296 410 125571 Elsevier B.V. Scopus
institution	Universiti Tenaga Nasional
building	UNITEN Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Tenaga Nasional
content_source	UNITEN Institutional Repository
url_provider	http://dspace.uniten.edu.my/
topic	Entropy Graphene Heat convection Heat flux Nanocomposites Nanofluidics Nanoparticles Reynolds number Thermal conductivity Entropy generation Exergy Analysis Graphene oxides Irreversibility Nanofluids Nanoparticle concentrations Performance Performance indices Red mud Red mud nanofluid Exergy
spellingShingle	Entropy Graphene Heat convection Heat flux Nanocomposites Nanofluidics Nanoparticles Reynolds number Thermal conductivity Entropy generation Exergy Analysis Graphene oxides Irreversibility Nanofluids Nanoparticle concentrations Performance Performance indices Red mud Red mud nanofluid Exergy Kanti P.K. Vicki Wanatasanappan V. Mahjoub Said N. Sharma K.V. Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study
description	This research explores how incorporating graphene oxide (GO) into red mud (RM) creates a superior nanomaterial for heat transfer applications. RM's inherent stability and thermal conductivity (TC), stemming from its metal oxide composition, are further amplified by this hybrid nano-composite. The study primarily investigates the thermal performance of water-based RM mono nanofluid and hybrid RM + GO (50:50) nanofluids (HNFs) at nanoparticle concentrations of 0.1?0.75 vol%. An experimental setup consisting of a copper tube under turbulent flow conditions with a constant heat flux and a bulk fluid temperature of 60 �C was used to test the performance of HNF. Various techniques are used to characterize the nanoparticles (NPs), and evaluate the thermophysical properties of nanofluids. The experimental data reveal that the heat transfer coefficient (HTC) increases with higher inlet fluid velocity and nanoparticle concentrations. Notably, the HNF demonstrates a significant improvement of 47.2 % in Nusselt number (Nu) and a 13.6 % rise in pressure drop (?p) compared to base fluid, at 0.75 vol%. The least entropy generation number (EGN) is obtained for the HNF (0.0049) compared to the RM NF (0.00583) at a concentration of 0.75 vol%. The exergy efficiency improves with an increase in concentration and Reynolds number (Re). Additionally, the study identifies the performance index (PI) of NFs and modelled correlations for estimating the Nu and friction factor (f) within the investigated concentration range. ? 2024 Elsevier B.V.
author2	57216493630
author_facet	57216493630 Kanti P.K. Vicki Wanatasanappan V. Mahjoub Said N. Sharma K.V.
format	Article
author	Kanti P.K. Vicki Wanatasanappan V. Mahjoub Said N. Sharma K.V.
author_sort	Kanti P.K.
title	Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study
title_short	Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study
title_full	Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study
title_fullStr	Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study
title_full_unstemmed	Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study
title_sort	stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: experimental study
publisher	Elsevier B.V.
publishDate	2025
_version_	1825816222374035456
score	13.244413

Stability, thermophysical properties, forced convective heat transfer, entropy minimization and exergy performance of a novel hybrid nanofluid: Experimental study

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