Thermal Conductivity and Viscosity of Nanorefrigerant

Thermal Conductivity and Viscosity of Nanorefrigerant

Nanorefrigerant is one kind of nanofluids that seems to be possessing better heat transfer performance over traditional refrigerants. Thermal conductivity & viscosity are important thermophysical property of the refrigeration which affects its performance. Experimental investigations are done on thermal conductivity and viscosity of Aluminium oxide-R-11 nanorefrigerant at different weight concentrations and temperature with varying size and shape of nanoparticles. Aluminium oxide (20 nm-spherical, 40 nm-spherical and 40 nm-elongated) nanoparticles are mixed with the refrigerant R-11 at varying concentration (0.02-0.10 wt. %) using ultrasonic vibration. The objective of this book is to investigate the dependency of thermal conductivity and viscosity of Aluminium oxide-R-11 nanorefrigerant on temperature at different weight concentrations, shape (spherical & elongated) and size. A detailed literature review is coined about the unique features of nanofluids, such as their preparation, viscosity and thermal conductivity.