Thermal Conductivity Enhancement of Aluminum Oxide Nanofluids for Efficient Heat Dissipation in Car Radiators

This study points to potentiality of studying Aluminum Oxide (Al₂O₃) nanofluid on viscosity (μ) and thermal conductivity (K) for automotive cooling system. The Al₂O₃ nanoparticles dispersed in 50:50 ethylene glycol-water with5 varying concentrations of 0.1, 0.2, 0.3, 0.4 and 0.5 vol%. The viscosity at 25°C, 40°C, 60°C and 80°C was measured by using a Brookfield viscometer; and thermal conductivity was measured by the transient hot wire method. The results indicate that the viscosity increases with the concentration of nanoparticles but decreases with the temperature. Due to comparative importance of thermal conductivity with increasing temperatures and nanoparticle concentrations. In nanofluid Al₂O₃ can enhance heat transfer automotive cooling system can be good performance and efficient as well as engine, in 0.5% concentration, thermal conductivity at 25°C and increase 27% at 60°C, paranormal found for development and Al₂O₃ nanofluids apply can be effective improvement at heat dissipation in automotive cooling system. Such a study opens the door for further developments with the automotive industry in the domain of advanced thermal management solutions.