Performance Study and Characteristic on a Domestic Refrigeration System with Additive of Zirconium Oxide (Zro2) Nano-Particle as Nano- Lubricant

In this work, the ZrO2 nano-oil is proposed as a promising lubricant to enhance the performance of vapour
compression refrigerator compressor. The stability of SiO2 nano particles in the oil is investigated experimentally. It was
confirmed that the nano particles steadily suspended in the mineral oil at a stationary condition for long period of time. The
application of the nano-oil with specific concentrations of 0.1%, 0.2% and 0.3 %( by mass fraction) were added in the
compressor oil. The result shows the COP of system were improved by 7.61%, 14.05% & 11.90%, respectively, when the nano-oil
was used instead of pure oil.