The effect of hybrid nanofluid CuO-TiO2 on radiator performance

This study aims to improve the performance of vehicle's cooling system called radiator, which is part increasing energy efficiency. Research has been done investigate convective heat transfer hybrid nanofluid, using CuO and TiO2 nanoparticles water-ethylene glycol (RC) as base fluids on a radiator. The mass concentration varied from 0.25 %, 0.30 0.35 %. For preparation nanofluid through two-step method, by mixing dry samples (50:50) then mixture radiator coolant, RC (60 % water 40 ethylene glycol). fluid flow varies 20 liters per minute 28 minute. Temperature variations range 70 °C 90 controlled heating. Four thermocouples measure inlet outlet hot airflow before after experiment showed that overall coefficient increases remarkably with increase nanoparticle under various rate values. maximum about 83 compared pure coolant at 22 temperature °C. It also found highly dependent radiator's fraction rate. Increasing shows enhancement in Inlet enhances rate, but its effect small nanofluid's reveals nanofluids can be suitable working fluid, especially small-scale devices.