Experimental investigation on thermo-physical properties of metal oxide composite nanolubricants
| Autor: | N N M Zawawi, Mahendran Samykano, M.Z. Sharif, W.H. Azmi, A.A.M. Redhwan |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
020209 energy Mechanical Engineering Rheometer Composite number Oxide Nanoparticle 02 engineering and technology Building and Construction 021001 nanoscience & nanotechnology Metal Viscosity chemistry.chemical_compound Thermal conductivity chemistry visual_art 0202 electrical engineering electronic engineering information engineering visual_art.visual_art_medium Lubricant Composite material 0210 nano-technology |
| Zdroj: | International Journal of Refrigeration. 89:11-21 |
| ISSN: | 0140-7007 |
| Popis: | The thermal conductivity and dynamic viscosity of three different combinations of metal oxide composite nanolubricant had been investigated at different nanoparticle volume concentrations (0.02 to 0.1%) and different temperatures (303–353 K). The prepared Al2O3 SiO2, Al2O3 TiO2 and TiO2 SiO2 composite metal oxide nanoparticle was dispersed in Polyalkylene Glycol (PAG 46) lubricant by espousing the two-step preparation method. The thermal and viscosity experiment was performed using KD2 Pro Thermal Properties Analyzer and LVDV-III Rheometer, respectively. All the considered metal oxide composite nanolubricants were witnessed to behave as Newtonian fluids. A maximum viscosity enhancement of 20.50% recorded for Al2O3 TiO2/PAG nanolubricant with 0.1% nanoparticle volume concentration and at the temperature of 303 K. Whereas, the highest thermal conductivity improvement recorded for Al2O3 SiO2/PAG nanolubricant with 2.41% improvement at 0.1% nanoparticle concentration and temperature of 303 K. A new regression model to estimate the dynamic viscosity and thermal conductivity of metal oxide composite nanolubricants were proposed based on the finding obtained. |
| Databáze: | OpenAIRE |
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