A colloidal mixture of nano-sized (<100 nm) particles in a base liquid called Nanofluid, which is the new generation of heat transfer fluid for various heat transfer applications where thermo-physical characteristics are substantially higher than the base liquid. In the present study, the effects due to temperature and concentration on thermo-physical properties (thermal conductivity, viscosity and density) for hybrid Nano fluids are discussed.The present work focuses on thermal conductivity and viscosity measurement of fluid mixture. This however, has not been addressed properly so far. It shows that thermal conductivity increases with nanoparticles concentration as well as with the temperature.Whereas,viscosity and density decreases with temperature and increases with nanoparticles concentration. Still more research is necessary to understand the mechanism behind the augmentation of heat transfer with hybrid nanofluids and to make use of hybrid nanofluids in real life applications.
Keywords
Hybrid Nanofluids, Car Radiator, thermo-physical characteristics, Al2O3.