Comparison between Performance of De-ionized Water and Al<inf>2</inf>O<inf>3</inf>/De-ionized Water on Enhancing the Transportation of Heat in Small Space

In this article, the influence of deionized water and Al2O3/deionized water nanofluid to cooling battery ambient temperature is shown in figure 1. The battery temperature is observed to be decrease as the Al2O3/deionized water nanofluids volume concentration and high flow rate is incremented. The Al2O3/deionized water nanofluid exhibits enhancement as compared to deionized water under laminar flow conditions. The 0.60 vol. % concentration of Al2O3 with 10g surfactant and 1 L/min flow rate gives the highest heat transfer rate value among all with 65 % higher as compared to deionized water at laminar flow was observed. It has been observed that 24 hr of ultra-sonication was the best duration in the presence of a surfactant, where it gives the best stability and improved thermal conductivity, this improvement is due to decrease of aggregates within nanoparticle.