METHOD AND PROCEDURE FOR ESTIMATION OF CRITICAL PARAMETERS OF VARIOUS NANO FLUIDS FOR USAGE OF THE NANO FLUIDS IN DIFFERENT APPLICATIONS

摘要

A simplified and cost effective method for analysis and ascertaining various critical parameters like Ultrasonic Velocity values, Adiabatic Compressibility, Intramolecular Free length and Acoustical Impedence is provided. Metal and metal oxide nanoparticle such as Zinc Oxide (ZnO), Copper Oxide (CuO), Silver (Ag) and Gold (Au) by chemical means and the nanoparticles were characterized using X-ray diffraction (XRD), Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDX) and Transmission Electron Microscope (TEM). Ultrasonic and thermal conductivity analysis of the nano particles were performed for understanding the particle-fluid and particle-particle interactions. Further, It was inferred, that the acoustical parameters such as adiabatic compressibility (ad), Intermolecular free length (Lf), Acoustic impedance (Z) show that the metallic nanofluid has better response over the metal oxide nanofluids and specifically, Ag and Au nanofluids show the higher adiabatic compressibility and lower Acoustic impedance values which ensure that the interaction between the particle-fluid and particle-particle are stable.