Experimental determination of electrical and thermo-physical characteristics of dielectric nanofluids based on volume fraction change

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dc.authoridKaratas, Mehmet/0000-0002-3705-8463en_US
dc.authoridbicen, yunus/0000-0001-8712-2286en_US
dc.authorscopusid57211169066en_US
dc.authorscopusid35172689600en_US
dc.authorwosidKaratas, Mehmet/V-8212-2018en_US
dc.authorwosidbicen, yunus/G-2599-2011en_US
dc.contributor.authorKaratas, Mehmet
dc.contributor.authorBicen, Yunus
dc.date.accessioned2024-08-23T16:04:42Z
dc.date.available2024-08-23T16:04:42Z
dc.date.issued2023en_US
dc.departmentDüzce Üniversitesien_US
dc.description.abstractDielectric insulating fluids perform critical tasks such as electrical insulation and cooling functions in power system equipment. Improving the thermal properties of insulating fluids extends the service life of power equipment, while improving their dielectric properties ensures a reliable and safe electricity supply. Therefore, studies on enhancing the thermal and dielectric qualities of dielectric fluids using nanoparticles have become more popular in recent years. In this study, the dielectric and thermo-physical properties of mineral oil-based SiO2 nanoparticle suspensions, namely nanofluids, have been investigated. An approximately 25.6% enhance-ment in AC breakdown voltage level has been obtained at a 0.05% critical volume fraction. It has been noted that the level of the AC breakdown voltage decreases when the critical volume fraction is exceeded. The thermal conductivity of the prepared nanofluid has changed logarithmically in the positive direction according to the rising number of nanoparticles per unit volume. Thermal conductivity has increased by around 8.55% for the critical volume fraction value, whereas thermal diffusivity has increased by approximately 22%. Similarly, when the number of particles in the nanofluid rises, the viscosity increases nonlinearly. The viscosity increase, which is undesirable for heat transfer, has been determined to be around 10.64% for the crucial volume fraction. These findings indicate that dielectric nanofluids hold significant potential for the future. The SEM analysis, on the other hand, explains the difficulties of assuring the long-term stability of nanofluids in the volume fraction with the highest AC dielectric breakdown voltage.en_US
dc.description.sponsorshipDuzce University Scientific Research Projects Unit (DUBAP) [2021.06.03.1172, 2210-D/TUBITAK, 1649B022011141]; Sakarya Electricity Distribution Inc. (SEDAS) Distribution Operations Uniten_US
dc.description.sponsorshipWe would like to thank the Duzce University Scientific Research Projects Unit (DUBAP) for funding this research under Contract No: 2021.06.03.1172, Graduate Scholarship Programs 2210-D/TUBITAK Document No. 1649B022011141, and Sakarya Electricity Distribution Inc. (SEDAS) Distribution Operations Unit for their assistance.en_US
dc.identifier.doi10.1016/j.matchemphys.2023.127914
dc.identifier.issn0254-0584
dc.identifier.issn1879-3312
dc.identifier.scopus2-s2.0-85159331742en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.matchemphys.2023.127914
dc.identifier.urihttps://hdl.handle.net/20.500.12684/14307
dc.identifier.volume304en_US
dc.identifier.wosWOS:001000865700001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofMaterials Chemistry And Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNanofluiden_US
dc.subjectBreakdown voltageen_US
dc.subjectViscosityen_US
dc.subjectThermal conductivityen_US
dc.subjectVolumetric heat capacityen_US
dc.subjectSEMen_US
dc.subjectOil-Based Nanofluidsen_US
dc.subjectPower Transformeren_US
dc.subjectLifetime Estimationen_US
dc.subjectEsteren_US
dc.subjectStabilityen_US
dc.subjectBreakdownen_US
dc.subjectStrengthen_US
dc.titleExperimental determination of electrical and thermo-physical characteristics of dielectric nanofluids based on volume fraction changeen_US
dc.typeArticleen_US

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