Influence of Aluminum Silicate and Cerium (IV) Oxide Nanofluid on Pool Boiling Characteristics

A study into pool boiling heat transfer with nanofluids particularly aluminum silicate and cerium (IV) oxide was used to prepare nanofluids. A review of existing nanofluid implementations done previously in multiple literature and research journals was taken into consideration while determining their effects as nanoparticles in necessary base fluids. The nanofluids were prepared with two-step method by dispersing Al2SiO5 and CeO2 nanopowders in water and were analyzed at base temperatures of 50-75°C and peak flux readings taken at saturation temperature. An inference between these and surface modifications due to settlement of nanoparticles on heater surface was studied by SEM imaging, and dispersion was studied with TEM imaging. The volume concentrations of Al2SiO5 and CeO2 nanofluids are varied from 0.1%≤φ≤0.3%. Readings taken at temperatures varied by 5°C between 50°C to 75°C and at 100°C. The improvement of q″ for Al2SiO5/H2O and CeO2/H2O nanofluids is about 120.5±0.6% in PHF over water as base fluids for 0.3% volume concentration solutions.