Evaluating the Thermal Conductivity and Viscosity of CuO-Nanolubricants

Abstract:

In the presented work, thermal conductivity of CuO and its viscosity at three different weight concentrations were investigated. A two-steps method was deployed in order to sonicate successfully CuO nanolubricants samples at three different weight concentrations (0.2 wt%, 0.5 wt%, & 1 wt%). The measurements of thermal conductivity were carried out with a lab-made measurement set, which is based on a 3ω method. The obtained enhancements were 1%, 1.7% and 2.8% for 0.2 wt.%, 0.5 wt.%, and 1 wt.%, respectively. Viscosity was also investigated under different temperatures and it was obtained that adding CuO to the mineral oil had a slight effect on its viscosity at lower concentrations. However, the maximum increment at lower temperature for the higher concentration was 13.1%. Based on the enhancement in thermal conductivity and the low increment in viscosity, CuO nanolubricant can be recommended for enhancing the heat transfer characteristic of the refrigeration compressor

• Periodical: Key Engineering Materials (Volume 750)
• Pages: 159-163
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.750.159
• Online since: August 2017
• Authors: Merve Koruk, Alpaslan Turgut*, Abdulkareem Alasli
• Keywords: Copper Oxide, Nanolubricants, Thermal Conductivity, Viscosity

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