Thermal Conductivity and Viscosity Measurements of Water-Based TiO2 Nanofluids

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dc.contributor.authorTurgut, A.
dc.contributor.authorTavman, I.
dc.contributor.authorChirtoc, M.
dc.contributor.authorSchuchmann, H. P.
dc.contributor.authorSauter, C.
dc.contributor.authorTavman, S.
dc.date.accessioned2019-10-27T20:50:18Z
dc.date.available2019-10-27T20:50:18Z
dc.date.issued2009
dc.departmentEge Üniversitesien_US
dc.description.abstractIn this study, the thermal conductivity and viscosity of TiO2 nanoparticles in deionized water were investigated up to a volume fraction of 3% of particles. The nanofluid was prepared by dispersing TiO2 nanoparticles in deionized water by using ultrasonic equipment. The mean diameter of TiO2 nanoparticles was 21 nm. While the thermal conductivity of nanofluids has been measured in general using conventional techniques such as the transient hot-wire method, this work presents the application of the 3 omega method for measuring the thermal conductivity. The 3 omega method was validated by measuring the thermal conductivity of pure fluids (water, methanol, ethanol, and ethylene glycol), yielding accurate values within 2%. Following this validation, the effective thermal conductivity of TiO2 nanoparticles in deionized water was measured at temperatures of 13 A degrees C, 23 A degrees C, 40 A degrees C, and 55 A degrees C. The experimental results showed that the thermal conductivity increases with an increase of particle volume fraction, and the enhancement was observed to be 7.4% over the base fluid for a nanofluid with 3% volume fraction of TiO2 nanoparticles at 13 A degrees C. The increase in viscosity with the increase of particle volume fraction was much more than predicted by the Einstein model. From this research, it seems that the increase in the nanofluid viscosity is larger than the enhancement in the thermal conductivity.en_US
dc.description.sponsorshipTUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [107M160]; AUF-PCSI [6316 PS821]en_US
dc.description.sponsorshipThis work has been supported by TUBITAK (Project no: 107M160) and Agence Universitaire de la Francophonie (Project no: AUF-PCSI 6316 PS821).en_US
dc.identifier.doi10.1007/s10765-009-0594-2
dc.identifier.endpage1226en_US
dc.identifier.issn0195-928X
dc.identifier.issn1572-9567
dc.identifier.issn0195-928Xen_US
dc.identifier.issn1572-9567en_US
dc.identifier.issue4en_US
dc.identifier.startpage1213en_US
dc.identifier.urihttps://doi.org/10.1007/s10765-009-0594-2
dc.identifier.urihttps://hdl.handle.net/11454/42979
dc.identifier.volume30en_US
dc.identifier.wosWOS:000270541700011en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherSpringer/Plenum Publishersen_US
dc.relation.ispartofInternational Journal of Thermophysicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject3 omega methoden_US
dc.subjectNanofluiden_US
dc.subjectNanoparticleen_US
dc.subjectThermal conductivityen_US
dc.subjectTitanium dioxideen_US
dc.subjectViscosityen_US
dc.titleThermal Conductivity and Viscosity Measurements of Water-Based TiO2 Nanofluidsen_US
dc.typeArticleen_US

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