Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger

The use of nanofluids for heat transfer has been examined in recent years as a potential method for augmentation of heat transfer in different systems. Often, the use of nanoparticles in a working fluid does not disrupt the system in significant ways. As a result of this general improvement of a sys...

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Autores principales:	Robert Plant, Gregory Hodgson, Stefania Impellizzeri, M. Ziad Saghir
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	nanofluid forced convection channels experimental measurement heat enhancement Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/ceb1c98220f4490b88894d6d9b5072b5
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spelling	oai:doaj.org-article:ceb1c98220f4490b88894d6d9b5072b52021-11-25T18:50:32ZExperimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger10.3390/pr91119322227-9717https://doaj.org/article/ceb1c98220f4490b88894d6d9b5072b52021-10-01T00:00:00Zhttps://www.mdpi.com/2227-9717/9/11/1932https://doaj.org/toc/2227-9717The use of nanofluids for heat transfer has been examined in recent years as a potential method for augmentation of heat transfer in different systems. Often, the use of nanoparticles in a working fluid does not disrupt the system in significant ways. As a result of this general improvement of a system’s heat transfer capabilities with relatively few detrimental factors, nanofluids and hybrid nanofluids have become an area of considerable research interest. One subcategory of this research area that has been under consideration is the concentration of each of the nanoparticles, leading to either successful augmentation or hindrance. The focus of the current experimental investigation was to examine the resulting impact on heat transfer performance as a result of each nanofluid implemented in an identical three-channel heat exchanger. This work examined the experimental impacts of 0.5 wt% titania (TiO<sub>2</sub>), 1 wt% titania, a mixture of 0.5 wt% titania and 0.5% silica, and a 0.5 wt% hybrid nanofluid of titania synthetically modified with copper-based nanostructures (Cu + TiO<sub>2</sub>). The experimental work examined a range of heat flux densities from 3.85 W cm<sup>−2</sup> to 7.51 W cm<sup>−2</sup>, and varying flow rates. Each of the nanoparticles were suspended in distilled water and then mixed using an ultrasonic water bath. The performances of each nanofluid were determined using the local Nusselt number to evaluate the possible thermal enhancement offered by each nanofluid mixture. While the 0.5 wt% Cu + TiO<sub>2</sub> hybrid nanofluid did significantly increase performance, the use of a 0.5 wt% TiO<sub>2</sub>/SiO<sub>2</sub> double nanofluid in a three-channel heat exchanger exhibited the greatest performance enhancement, with an average increase of 37.3% as compared to water.Robert PlantGregory HodgsonStefania ImpellizzeriM. Ziad SaghirMDPI AGarticlenanofluidforced convectionchannelsexperimental measurementheat enhancementChemical technologyTP1-1185ChemistryQD1-999ENProcesses, Vol 9, Iss 1932, p 1932 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	nanofluid forced convection channels experimental measurement heat enhancement Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	nanofluid forced convection channels experimental measurement heat enhancement Chemical technology TP1-1185 Chemistry QD1-999 Robert Plant Gregory Hodgson Stefania Impellizzeri M. Ziad Saghir Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger
description	The use of nanofluids for heat transfer has been examined in recent years as a potential method for augmentation of heat transfer in different systems. Often, the use of nanoparticles in a working fluid does not disrupt the system in significant ways. As a result of this general improvement of a system’s heat transfer capabilities with relatively few detrimental factors, nanofluids and hybrid nanofluids have become an area of considerable research interest. One subcategory of this research area that has been under consideration is the concentration of each of the nanoparticles, leading to either successful augmentation or hindrance. The focus of the current experimental investigation was to examine the resulting impact on heat transfer performance as a result of each nanofluid implemented in an identical three-channel heat exchanger. This work examined the experimental impacts of 0.5 wt% titania (TiO<sub>2</sub>), 1 wt% titania, a mixture of 0.5 wt% titania and 0.5% silica, and a 0.5 wt% hybrid nanofluid of titania synthetically modified with copper-based nanostructures (Cu + TiO<sub>2</sub>). The experimental work examined a range of heat flux densities from 3.85 W cm<sup>−2</sup> to 7.51 W cm<sup>−2</sup>, and varying flow rates. Each of the nanoparticles were suspended in distilled water and then mixed using an ultrasonic water bath. The performances of each nanofluid were determined using the local Nusselt number to evaluate the possible thermal enhancement offered by each nanofluid mixture. While the 0.5 wt% Cu + TiO<sub>2</sub> hybrid nanofluid did significantly increase performance, the use of a 0.5 wt% TiO<sub>2</sub>/SiO<sub>2</sub> double nanofluid in a three-channel heat exchanger exhibited the greatest performance enhancement, with an average increase of 37.3% as compared to water.
format	article
author	Robert Plant Gregory Hodgson Stefania Impellizzeri M. Ziad Saghir
author_facet	Robert Plant Gregory Hodgson Stefania Impellizzeri M. Ziad Saghir
author_sort	Robert Plant
title	Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger
title_short	Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger
title_full	Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger
title_fullStr	Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger
title_full_unstemmed	Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger
title_sort	experimental investigation of heat transfer with various aqueous mono/hybrid nanofluids in a multi-channel heat exchanger
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/ceb1c98220f4490b88894d6d9b5072b5
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Experimental Investigation of Heat Transfer with Various Aqueous Mono/Hybrid Nanofluids in a Multi-Channel Heat Exchanger

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