A COMPARATIVE STUDY ON THERMAL CONDUCTIVITY OF Al 2 O 3 WATER CuO WATER AND Al 2 O 3 CuO WATER NANOFLUIDS
In this present study, the thermal conductivity of Al2O3/water, CuO/water and Al2O3 CuO/water hybrid nanofluid were investigated experimentally. The two step method was adopted to prepare the hybrid nanofluid. Three different volume concentrations of nanofluids (0.05, 0.1 0.2% were prepared by dispersing Al2O3 and CuO nanoparticles in water. The properties of single and hybrid nanofluids were measured by varying the temperature from 20 0 C to 60 0 C. The obtained results demonstrate that the thermal conductivity of nanofluids are the function of volume concentration and temperature. Also the experimental results showed that a maximum of 9.8 enhancement of thermal conductivity was observed for 0.2% particle volume concentration. The experimental thermal conductivity values were compared with the theoretical thermal conductivity values.