Heat Enhancement Of Heat Exchanger Using Aluminium Oxide(Al2o3), Copper Oxide(Cuo)Nano Fluids With Different Concentrations

Abstract

Active and passive heat transfer techniques are commonly employed for heat transfer augmentation in fluids. Conventional heat transfer fluids like water, oil, and glycols have poor heat transport capabilities and they hardly meet the present day requirements of high heat dissipation rates in compact heat exchangers. Design of Compact heat exchanger and miniaturizing of high energy devices are possible only with the fluids having better heat transfer performance.The nano fluids are considered to be new generation fluids characterized by better heat transfer capabilities over traditional heat transfer fluids. The nanofluid is an emerging area of research and has lot of potential in heat transfer applications. Particles of size less than 100nm exhibit properties different from those of conventional solids. Nano materials have unique mechanical, electrical, optical, magnetic and thermal properties.Thermo physical properties of Al2O3 and CuO with water as base fluid have been experimentally determined at different volume concentrations. Present study is aimed at estimating the heat transfer enhancement for different Reynolds number in turbulent range at volume concentration of 0.1%, 0.25% and 0.4%.