Open AccessExperimental study on dynamic viscosity of aqueous-based nanofluids with an addition of ethylene glycol
Author(s) -
Wahaizad Safiei,
M. M. Rahman,
A. H. Musfirah,
Md. Abdul Maleque,
R. Singh
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/788/1/012094
Subject(s) - nanofluid , ethylene glycol , viscosity , materials science , volume (thermodynamics) , viscometer , aqueous solution , pulmonary surfactant , volume fraction , chemical engineering , reduced viscosity , base (topology) , relative viscosity , nanoparticle , thermodynamics , chemistry , composite material , nanotechnology , organic chemistry , mathematical analysis , physics , mathematics , engineering
In this study, the effect of adding different nanoparticles in the mixture of deionised water and ethylene glycol on dynamic viscosity is investigated experimentally. In order to prepare for single nanofluids, the dry nanoparticles of SiO 2 , Al 2 O 3 and ZrO 2 were dispersed into 60% volume of deionised water and 40% volume of ethylene glycol as a base fluid using a two-step method. The experiments were performed in the temperature range of 30°C and 70°C and weight fraction ranging between 0.1wt.% and 1wt%. No surfactant used in preparing the nanofluids. The dynamic viscosity data were collected using DV-II+ Pro Brookfield viscometer. The single, dual-hybrid and tri-hybrid aqueous based nanofluids dynamic viscosity results are explicitly presented. From the results, it is exhibited that nanofluid viscosity decreases with increasing liquid temperature and increases with increasing of nanoparticles volume concentration. The viscosity decreases with increasing of deionised water volume percentage in the base fluid. Zirconia single nanofluid at 1wt.% recorded 2.5 times maximum enhancement of viscosity over the base fluid. The results display that single nanofluids have higher dynamic viscosity compared to hybrid nanofluids.