An Investigation of Nanolubricants R600a-Polyolester Oil-GO and R600a-Polyolester Oil-TiO2. Thermophysical Properties

International Journal of Mechanical Engineering

© 2024 by SSRG - IJME Journal

Volume 11 Issue 6

Year of Publication : 2024

Authors : Pradip Kailas Patil, Rishi Dewangan, Hemant Krishnarao Wagh

10.14445/23488360/IJME-V11I6P106

How to Cite?

Pradip Kailas Patil, Rishi Dewangan, Hemant Krishnarao Wagh, "An Investigation of Nanolubricants R600a-Polyolester Oil-GO and R600a-Polyolester Oil-TiO2. Thermophysical Properties," SSRG International Journal of Mechanical Engineering, vol. 11,  no. 6, pp. 47-54, 2024. Crossref, https://doi.org/10.14445/23488360/IJME-V11I6P106

Abstract:

In recent years, nanoparticles have been demonstrated to be one of the most effective means of enhancing the heat transfer and thermophysical properties of conventional coolants and lubricants. Metallic or metal oxide particles, carbon, and its allotropes dispersed in conventional lubricating oils form nanolubricants. A study was conducted using R600a (isobutane) as a working fluid to experiment with different concentrations of GO and TiO2 nanoparticles dispersed in polyolester oil lubricant. Two samples were prepared, each containing 0.3 g/l of GO and TiO2 nanolubricant. We investigated nanolubricant concentrations in 30 grams, 40 grams, and 50 grams of R600a refrigerant, respectively. The primary components of the refrigerator were equipped with Type K thermocouples.  Additionally, the compressor is fitted with pressure gauges at the inlet and outlet to monitor discharge and suction pressures. In this research, the efficacy of the lubricant was compared with that of the original base lubricant (POE oil). The results indicated that the graphene oxide nanolubricant at 0.3 g/L achieved the optimal Coefficient Of Performance (COP), the lowest temperature in the evaporator, and the minimum power usage compared to the TiO2 nanolubricant.

Keywords:

Graphene-oxide, GO composite nanoparticles, Polyolester (POE) oil, Nano lubricants, Natural refrigerant, R600a (isobutane) refrigerant.

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