An experimental study to investigate the dynamic behaviour of thermal conductivity for different concentrations of Al2O3nanofluid

Thermal conductivity (k) is an important property of the fluid which contributes to the heat transfer. Presence of nanomaterial enhances thekof the base fluid and can be used as potential heat transfer medium in many industrial, domestic applications. Experimentation to study the effect onkdue to nanomaterial addition to the base fluid is carried out. Alumina Oxide (Al2O3) of different concentrations was selected as nanomaterial with water as the base fluid. Results showed that nanofluid with 7.5% Al(2)O(3)gives 22% increase inkas compared to base fluid. Also, it was observed that as nanomaterial % concentration increases, the % decrease inkincreases. For test period, water shows a negligible reduction ink; compared to 5.5% decrease inkfor 7.5% Al(2)O(3)nanofluid. This study leads to the conclusion that nanofluids are having good k for certain time period; after that replacement of fluid is necessary.