Study of synthesis, characterization and thermo physical properties of Al2O3-SiO2-TiO2 / H2O based tri-hybrid nanofluid

Abstract

The prediction of behavior of thermo physical properties is essential to understand the heat transfer characteristics of any nanofluid. In the present work the tri hybrid oxide nanoparticles namely Al2O3, SiO2 and TiO2 of three different ratios are prepared at 0.1% concentration and their characterization and thermo physical properties are examined. The water is used as the base fluid and the sample is made for 100 ml. The nanoparticles are dispersed with the base fluid by magnetic stirring and followed by ultra-sonication. The stability is also found to be good under zeta potential test. The experimentation results showed that the thermo physical properties are better than that of base fluid. The thermal conductivity maximum enhancement was found to be 18.33% from the base fluid at just 0.1% concentration at 50⁰ C. The maximum viscosity enhancement is found to be as 43.79% than that of base fluid. The experimental results are compared and validated with the available literature based mathematical models and similar works of other authors and found to be of good matching. The maximum deviation from the model correlation is below 1%. This novel tri hybrid nanofluid is effective alternative for many di-hybrid nanofluids and has better thermo physical properties than oxide based di hybrid nanofluids.