Ultrasonic Interferometry and Physiothermal properties of Al2O3/CuO nanofluids

Abstract

Nanoparticles suspended in conventional fluids also named as nanofluids are being researched due to its unique thermal behaviour and its employability as heat transfer fluids. This report details the preparation and stabilization of Al2O3/CuO nanofluids and was analyzed by X-Ray diffraction, SEM and IR respectively. Further the synthesized nanoparticles are dispersed in different volume fractions of ethylene glycol solvent (0.001, 0.003, and 0.005 mass fractions) to prepare nanofluids. The nanofluids were prepared via rigorous stirring and ultrasonic agitation to maintain the stability. Further these nanofluids were prepared without any stabilizer at 2.7 pH. Further the thermal properties were investigated using KD2 Probe analysing unit, which showed that the thermal conductivity increased with higher concentrations of nanofluids. Ultrasonic velocity, yet another property of nanofluids, represents the speed in which sound propagates in a material and depends on density and elasticity of the material. Ultrasonic velocity of nanofluids is important for non-radiative and non-destructive structural analysis and hence the same has been investigated. Results proved that the prepared nanocoolants are stable and hence could be utilized for coolant applications.

Keywords

• Nanofluids
• Al2O3/CuO nanoparticles
• Thermal conductivity
• Ultrasonic Velocity
• Adiabatic compressibility