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Article: Experimental investigation of thermal and electrical conductivity of silicon oxide nanofluids in ethylene glycol / water mixture

TitleExperimental investigation of thermal and electrical conductivity of silicon oxide nanofluids in ethylene glycol / water mixture
Authors
KeywordsElectrical conduction mechanism
Electrical conductivity
SiO2 nanofluids
Thermal conductivity
Thermo-electrical conductivity ratio
Issue Date2018
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhmt
Citation
International Journal of Heat and Mass Transfer, 2018, v. 117, p. 280-286 How to Cite?
AbstractIn this paper, the thermal conductivity and electrical conductivity of SiO2 nanofluids using mixture of ethylene glycol (EG) and water (H2O) as the base fluid are investigated. The two-step method was used to prepare SiO2-EG/H2O nanofluids with a mass concentration of 0.3%. The variations in thermal conduc- tivity and electrical conductivity as functions of EG concentration (0–100%, v/v) and temperature (25–45 C) are present. Experimental results showed that the thermal conductivity and electrical conductivity of SiO2-EG/H2O nanofluids both decreased as the EG content percentage increases in the EG/H2O mixture. At a specific EG content percentage, thermal conductivity and electrical conductivity both increased with the increase in temperature. To better evaluate the enhancement performance of SiO2-EG/H2O nanoflu- ids, the relative electrical conductivity was introduced and studied explicitly. The mechanism of electrical conductivity enhancement in SiO2-EG/H2O nanofluids was analyzed in detail. Meanwhile, the ratio of thermal conductivity and electrical conductivity was also discussed.
Persistent Identifierhttp://hdl.handle.net/10722/258579
ISSN
2017 Impact Factor: 3.891
2015 SCImago Journal Rankings: 1.749
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorGuo, Y-
dc.contributor.authorZhang, T-
dc.contributor.authorZhang, D-
dc.contributor.authorWang, Q-
dc.date.accessioned2018-08-22T01:40:47Z-
dc.date.available2018-08-22T01:40:47Z-
dc.date.issued2018-
dc.identifier.citationInternational Journal of Heat and Mass Transfer, 2018, v. 117, p. 280-286-
dc.identifier.issn0017-9310-
dc.identifier.urihttp://hdl.handle.net/10722/258579-
dc.description.abstractIn this paper, the thermal conductivity and electrical conductivity of SiO2 nanofluids using mixture of ethylene glycol (EG) and water (H2O) as the base fluid are investigated. The two-step method was used to prepare SiO2-EG/H2O nanofluids with a mass concentration of 0.3%. The variations in thermal conduc- tivity and electrical conductivity as functions of EG concentration (0–100%, v/v) and temperature (25–45 C) are present. Experimental results showed that the thermal conductivity and electrical conductivity of SiO2-EG/H2O nanofluids both decreased as the EG content percentage increases in the EG/H2O mixture. At a specific EG content percentage, thermal conductivity and electrical conductivity both increased with the increase in temperature. To better evaluate the enhancement performance of SiO2-EG/H2O nanoflu- ids, the relative electrical conductivity was introduced and studied explicitly. The mechanism of electrical conductivity enhancement in SiO2-EG/H2O nanofluids was analyzed in detail. Meanwhile, the ratio of thermal conductivity and electrical conductivity was also discussed.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/ijhmt-
dc.relation.ispartofInternational Journal of Heat and Mass Transfer-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectElectrical conduction mechanism-
dc.subjectElectrical conductivity-
dc.subjectSiO2 nanofluids-
dc.subjectThermal conductivity-
dc.subjectThermo-electrical conductivity ratio-
dc.titleExperimental investigation of thermal and electrical conductivity of silicon oxide nanofluids in ethylene glycol / water mixture-
dc.typeArticle-
dc.identifier.emailGuo, Y: yfguo@hku.hk-
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.ijheatmasstransfer.2017.09.091-
dc.identifier.scopuseid_2-s2.0-85031035738-
dc.identifier.hkuros286749-
dc.identifier.volume117-
dc.identifier.spage280-
dc.identifier.epage286-
dc.identifier.isiWOS:000417963300026-
dc.publisher.placeUnited Kingdom-

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