Rheological properties of TiO2/POE nanolubricant for automotive air conditioning system
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 na...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | en |
| Published: |
Semarak Ilmu Publishing
2022
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| Online Access: | http://eprints.utem.edu.my/id/eprint/26575/2/2022_ARFMTS_AHM_RHEOLOGICAL%20NANO.PDF http://eprints.utem.edu.my/id/eprint/26575/ https://semarakilmu.com.my/journals/index.php/fluid_mechanics_thermal_sciences/article/view/191/107 https://doi.org/10.37934/arfmts.90.1.1022 |
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| Summary: | 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. |
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