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Effect of nanoparticle morphology on thermal conductivity and rheology of Zinc Oxide nanofluids
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM.ORCID iD: 0000-0003-1815-1053
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM.ORCID iD: 0000-0001-5380-975X
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM.ORCID iD: 0000-0001-5678-5298
KTH, School of Information and Communication Technology (ICT), Materials- and Nano Physics, Functional Materials, FNM.
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2012 (English)Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

Nanofluids are stable dispersions of engineered nanometer-sized particles which have shown potential to enhance heat transfer properties. Nanoparticle morphology might influence the heat transport properties of the nanofluid. In this work our aim is to investigate the influence of nanoparticle morphology in the heat transfer and rheological properties of  ZnO nanofluids. ZnO nanoparticles and nanorods were synthesized and dispersed in ethylene glycol, as the base fluid, to obtain nanofluids with different percentages of nanoparticle loading. Ultrasonic agitation was used for obtaining a stable suspension and the use of surfactants was avoided. The concentrations of ZnO nanofluids were varied between 1 wt% and 3 wt%. The physicochemical properties of nanofluids were characterized by using various techniques including particle size analyzer, transmission electron microscopy (TEM), scanning electron microscopy (SEM) and Fourier Transform Infrared Spectroscopy (FT-IR). The thermal conductivity of prepared nanofluids were measured by Transient Hot Wire (THW) method and our finding on the physicochemical, transport and rheological properties of the ZnO nanofluids, containing nanoparticles with different morphology, are presented in detail.

Place, publisher, year, edition, pages
2012.
Keyword [en]
Zinc oxide, Nanofluids, Thermal conductivity, Viscosity
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:kth:diva-124197OAI: oai:DiVA.org:kth-124197DiVA: diva2:633664
Conference
European Materials Research Conference, E-MRS; Strasbourg, France, 14-18 May 2012
Note

QC 20131002

Available from: 2013-06-27 Created: 2013-06-27 Last updated: 2013-10-02Bibliographically approved

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Authority records BETA

Nikkam, NaderSaleemi, MohsinToprak, M.S.

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Nikkam, NaderSaleemi, MohsinToprak, M.S.Singh, S.P.Muhammed, Mamoun
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