Thermal conductivity, viscosity and rheology of a suspension based on Al sub(2)O sub(3) nanoparticles and mixture of 90% ethylene glycol and 10% water

Results of experimental studies of thermal conductivity and viscosity of nanofluids, based on Al sub(2)O sub(3) and mixture of 90% ethylene glycol (EG) and 10% water, are presented. Experiments were carried out at various volume fraction of a solid phase in the range of 0-1.5%. The non-stationary me...

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Bibliographic Details
Published in:International journal of heat and mass transfer 2015-04, Vol.83, p.187-191
Main Authors: Serebryakova, M A, Dimov, S V, Bardakhanov, S P, Novopashin, S A
Format: Article
Language:English
Subjects:
Aluminum oxide
Ethylene glycol
Heat transfer
Nanoparticles
Nanostructure
Thermal conductivity
Viscosity
Volume fraction
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Summary:Results of experimental studies of thermal conductivity and viscosity of nanofluids, based on Al sub(2)O sub(3) and mixture of 90% ethylene glycol (EG) and 10% water, are presented. Experiments were carried out at various volume fraction of a solid phase in the range of 0-1.5%. The non-stationary method of a heated wire was used to measure thermal conductivity. Viscosity was measured by a rotational viscometer using the capillary method. It was found that the dependence of thermal conductivity on volume concentration corresponds to the Maxwell theory, but viscosity dependence exceeds significantly the values, predicted by Einstein and Batchelor theories. The rheological properties have been observed and measured as a function of shear stress and nanoparticles volume fraction.
ISSN:0017-9310
DOI:10.1016/j.ijheatmasstransfer.2014.12.002