The thermal properties of CaO-Nanofluids

The poor bio-degradability of mineral lubricant oils pressurizes to develop bio-degradable, renewable, less toxic and evaporative lubricating agents. In this study, the rice bran oil is used as a base fluid and CaO nanoparticles are used as bio-lubricant additive. The CaO nanoparticles are synthesised from chicken egg shells and are characterised by Energy Dispersive X-Ray Spectroscopy (EDS), Scanning Electron Microscope (SEM) and X-Ray Diffraction (XRD). The CaO-nanofluids are formulated by ultrasonication process and their chemical stability and thermal properties are estimated by Thermogravimetric Analysis (TGA) and Differential Thermogravimetric Analysis (DTA) under nitrogen atmosphere and Fourier Transform Infrared Spectroscopy (FTIR). The results designate that the thermal properties of rice bran oil is enhanced by 18.2% and 25% at 0.25 wt% and 0.50 wt% of CaO-nanofluids, respectively.