Experimental investigation on properties of hybrid nanofluids (TiO2 and ZnO) in water–ethylene glycol mixture

N.S.M. Sahid; M.M. Rahman; K.  Kadirgama; M.A. Maleque

doi:10.15282/jmes.11.4.2017.11.0277

Authors

N.S.M. Sahid Faculty of Mechanical Engineering, Universiti Malaysia Pahang 26600 Pekan, Pahang, Malaysia
M.M. Rahman Faculty of Mechanical Engineering, Universiti Malaysia Pahang 26600 Pekan, Pahang, Malaysia
K. Kadirgama Faculty of Mechanical Engineering, Universiti Malaysia Pahang 26600 Pekan, Pahang, Malaysia
M.A. Maleque Department of Manufacturing and Materials Engineering International Islamic University Malaysia 53100 Kuala Lumpur, Malaysia

DOI:

https://doi.org/10.15282/jmes.11.4.2017.11.0277

Keywords:

Hybrid nanofluids; thermal conductivity; temperature; ethylene glycol; titanium oxide; zinc oxide.

Abstract

This paper presents an experimental investigation on properties and stability of hybrid nanofluids (TiO₂ and ZnO) in water-ethylene glycol mixture. The nanofluids are important in heat enhanced due to its inherent operative performance. The performance of hybrid nanofluids in mixture based fluids is not explored vigorously yet. The properties of TiO₂ and ZnO nanoparticle dispersed in mixture of water and ethyelene glycol (EG) were considered in this study. The outcome of base fluid proportion (water: EG) to hybrid nanofluids was investigated. Hybrid nanofluids with different volume concentration up to 0.1-1.5% were prepared with 21nm particle size of TiO₂ and 10-30nm ZnO nanoparticle. The nanoparticle were suspended in various ratio of TiO₂ : ZnO including 70:30, 80:20 and 90:10 by volume percent. The measurements of viscosity were performed using Brookfield LVDV III Ultra Rheometer for hybrid nanofluid temperature of 50 to 70 ^oC, while the measurements of thermal conductivity were performed using KD2 PRO thermal conductivity. Viscosity and thermal conductivity of hybrid nanofluids were perceived to impact by hybrid nanofluids concentration, temperature and waterethelene glycol as base fluid strongly.

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