Tailoring the viscosity of water and ethylene glycol based TiO2 nanofluids

Authors

Abu Musa Abdullah, The University of Texas Rio Grande Valley
Aminur Rashid Chowdhury, The University of Texas Rio Grande Valley
Yingchen Yang, The University of Texas Rio Grande ValleyFollow
Horacio Vasquez, The University of Texas Rio Grande Valley
Justin Moore, The University of Texas Rio Grande Valley
Jason Parsons, The University of Texas Rio Grande ValleyFollow
Karen Lozano, The University of Texas Rio Grande ValleyFollow
Jose J. Gutierrez, The University of Texas Rio Grande Valley
Karen S. Martirosyan, The University of Texas Rio Grande ValleyFollow
Mohammed Uddin, The University of Texas Rio Grande ValleyFollow

Document Type

Article

Publication Date

1-2020

Abstract

Highlights

• Viscosity of TiO2 nanofluid at variable physical parameters has been reviewed.

• Classical and experimental viscosity models of nanofluids have been discussed.

• Preparation techniques of TiO2 nanofluid have been discussed.

• Viscosity of TiO2 nanofluid can increase by 329 times compared to the base fluid.

• Viscosity of TiO2 nanofluid decreases significantly with increasing temperature.

Abstract

Nanofluids have garnered significant attention in the scientific and engineering research communities due to their enhanced heat transfer properties when compared to conventional thermal fluids. Nanofluids comprised of titanium dioxide (TiO2) nanoparticles have a wide range of applications due to their excellent thermophysical properties like thermal conductivity and viscosity, environmentally friendly nature, and low cost. This article reviews major research advances in homogeneous water (H2O) and ethylene glycol (EG, HO(CH2)2OH) based TiO2 nanofluids compared to hybrid TiO2 nanofluids. This review focuses on viscosity measurements and rheological behavior of the aforementioned nanofluids at various temperatures and TiO2 particle concentrations. Additionally, the effect of sonication time, particle size, and base fluid mixture on the viscosity of TiO2 nanofluids are included in this study. The classical and experimental models of viscosity have been reviewed as well. Furthermore, nanofluid preparation methods, characterization, and measurement techniques are examined and discussed. Previous studies clearly show that the viscosity of TiO2 nanofluids is a noteworthy function of both temperature and nanoparticle concentration. Viscosity is observed to significantly increase with particle concentration and decrease with temperature. Nanofluids are also observed to exhibit dissimilar rheological behavior under different experimental conditions. Additionally, increases in viscosity are also discussed with respect to the chosen nanofluid base liquid. The hybridization of TiO2 nanofluids, as well as combinations of ethylene glycol and water, have shown substantial effects on the viscosity of nanofluids. These results provide important characteristics that should be considered during various engineering applications of TiO2 nanofluids.

Comments

Original published version available at https://doi.org/10.1016/j.molliq.2019.111982

Recommended Citation

Abdullah, Abu Musa, Aminur Rashid Chowdhury, Yingchen Yang, Horacio Vasquez, H. Justin Moore, Jason G. Parsons, Karen Lozano, Jose J. Gutierrez, Karen S. Martirosyan, and M. Jasim Uddin. "Tailoring the viscosity of water and ethylene glycol based TiO2 nanofluids." Journal of Molecular Liquids 297 (2020): 111982. https://doi.org/10.1016/j.molliq.2019.111982

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.

Publication Title

Journal of Molecular Liquids

DOI

10.1016/j.molliq.2019.11198