Rheological properties of TiO2/POE nanolubricant for automotive air conditioning system

Azmi, Wan Hamzah and Hamisa, Abdul Hamid and Ismail, Mohd. Farid and Ramadhan, Anwar Ilmar and Mohd Yusof, Taib (2022) Rheological properties of TiO2/POE nanolubricant for automotive air conditioning system. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 90 (1). pp. 10-22. ISSN 2289-7879

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Abstract

The enhancement of nanolubricant rheological properties can improve the performance of automotive air-conditioning systems. The rheological properties of the TiO2/POE nanolubricant were investigated in this study at 0.01 to 0.1% volume concentrations and temperatures ranging from 0 to 100°C. TiO2 nanoparticles were dispersed in the base lubricant of Polyol-ester (POE RL68H) lubricant in two steps. The dynamic viscosity was measured with an Anton-Paar Rotational Rheometer. According to the findings, the TiO2/POE nanolubricant behaved as Newtonian fluids at all volume concentrations and temperatures. The dynamic viscosity increment of nanolubricants up to 1.75% only occurred for 0.1% volume concentration and temperature of 90 to 100°C. Meanwhile, when compared to POE lubricant, nanolubricants with volume concentrations of 0.01 and 0.05% showed a decrement trend in dynamic viscosity of up to 1.8%. Finally, the TiO2/POE nanolubricant improved the rheological properties of the POE lubricant for use in automotive air-conditioning systems.

Item Type:	Article
Uncontrolled Keywords:	compressor lubricant, dynamic viscosity, nanolubricant, refrigeration, rheology properties
Divisions:	Faculty of Mechanical and Manufacturing Engineering Technology
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	12 Apr 2023 10:58
Last Modified:	12 Apr 2023 10:58
URI:	http://eprints.utem.edu.my/id/eprint/26575
Statistic Details:	View Download Statistic

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