Synthesis and Thermo-Physical Characteristics of Therminol-66 Oil Based Nanofluids with Rare-Earth Metal Oxide Nanocomposites

Therminol-66 oil based nanofluids were prepared from rare-earth metal oxide (Lanthanum oxide)—Magnesium oxide nanocomposites by suspending them in Therminol-66 oil at four different weight concentrations from 0.25% to 1% through ultrasonication technique. The experiments were carried out for the study of thermal conductivity and viscosity measurements of therminol-66 oil and therminol-66 oil based nanofluid at various temperatures. The thermal conductivity enhancements of 18.11% have been obtained in therminol-66 oil based nanofluids with 1 wt% Lanthanum oxide-Magnesium oxide nanocomposite at 50 °C, which could be ascribed to the Brownian motion of nanocomposites. Also, a reduction in viscosity found in therminol-66 oil based nanofluids with 1 wt% Lanthanum oxide-Magnesium oxide nanocomposite 70 °C. The outcomes of the current work indicate the potential of therminol-66 oil based nanofluid for heat transmission applications.