THERMAL SCIENCE

International Scientific Journal

Ratchagaraja Dhairiyasamy

,

Mohamed H. Ahmed

,

Yasser Abdelrhman

,

Asif Afzal

,

Fadl A. Essa

,

M. Alsehli

,

Ayman A. Aly

,

Bahaa Saleh

EXPERIMENTAL INVESTIGATION OF THERMOPHYSICAL PROPERTIES AND HEAT TRANSFER CHARACTERISTICS OF HYBRID NANOFLUIDS BASED ON PARTICLE SIZE

ABSTRACT
In heat transfer applications, nanofluids are utilized to increase thermal conductivity and heat transfer coefficient. The difficulty of nanoparticle stabilization in the fluids is a significant problem in heat transfer applications. Heat exchanger materials may wear and erode as a result of the additional nanoparticle. When compared to mono nanofluids, this can be lowered by using hybrid nanofluids. In this work, hybrid nanofluids are used in a radiator under laminar flow at 75°C, and the effect of volume concentration on heat transfer enhancement is investigated. The thermophysical characteristics of hybrid nanofluids are investigated using SiC and Al2O3 at 0.1 vol.% and 0.2 vol.%. The results revealed that a hybrid nanofluid with a higher volume concentration improves heat transfer. Finally, regression analysis for laminar flow is carried out and correlations for experimental Nusselt number and friction factor values were developed. The impact of particle size, flow rate, and temperature on the radiator’s heat transfer enhancement is investigated using hybrid nanofluid at 75°C. It is observed that the size of the nanoparticle has a substantial effect on heat transfer characteristics. It is concluded that using smaller-sized hybrid nanoparticles of Al2O3/SiC-S with less volume concentration enhances heat transfer and reduces radiator size compared to conventional coolants.
KEYWORDS
hybrid nanofluids, heat transfer coefficient, nusselt number, friction factor, radiator
PAPER SUBMITTED: 2021-07-06
PAPER REVISED: 2021-11-01
PAPER ACCEPTED: 2021-11-12
PUBLISHED ONLINE: 2022-02-05
DOI REFERENCE: https://doi.org/10.2298/TSCI210706005D
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2022, VOLUME 26, ISSUE Issue 5, PAGES [4193 - 4206]
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Experimental investigation of thermophysical properties and heat transfer characteristics of hybrid nanofluids based on particle size

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence