Share

IIR document

Simultaneous effects of multi-walled carbon nanotubes and copper oxide nanoparticles on the rheological behavior of cooling oil: application for refrigeration systems.

Author(s) : ESFE M. H., DALIR R., BAKHTIARI R., et al.

Type of article: Article, IJR article

Summary

This study discussed the rheological behavior of MWCNT-CuO(30–70%)/SAE50 nanofluid experimentally at the volume fractions of 0–1 percent in the temperature range of 25–50 °C and the shear rate of 666–7998 s -1 . Due to a nonlinear relationship between the shear rate and shear stress, nanofluid behavior can be considered close to the non-Newtonian fluids. Nanofluid viscosity reduces by adding nanoparticles at the volume fractions of 0.0625%, 0.125%, and 0.25% (maximum reduction of 15%). Nanofluid viscosity increases at the volume fractions higher than 0.5%, as the maximum viscosity increase, i.e. 14%, occurs at the volume fraction of 1%. Reduction of viscosity at low volume fractions and a small increase of vis- cosity at higher volume fractions show that this nanofluid can be used in the applications other than lubrication. This study presents for the first time a new mathematical relation for the relative viscos- ity of MWCNT-CuO(3–70%)/SAE50. In the relation provided to predict the relative viscosity of nanofluid, R 2 = 0.9453, which indicates its accuracy. This study also discussed the sensitivity of the relative viscosity of nanofluid to temperature and volume fraction.

Available documents

Format PDF

Pages: 123-133

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Simultaneous effects of multi-walled carbon nanotubes and copper oxide nanoparticles on the rheological behavior of cooling oil: application for refrigeration systems.
  • Record ID : 30026572
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 104
  • Publication date: 2019/08
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2018.11.036

Links


See other articles in this issue (50)
See the source

Indexing