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Ravikumar, R.
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article
Barium Oxide Nanoparticle-Based Nanofluids for Improved Heat Transfer Characteristics
Abstract
Recently nanofluids have received a lot of attention due to their excellent heat transfer properties. Investigation on the chemical co-precipitation synthesis of Barium Oxide (BaO) nanoparticle and its Therminol oil-based nanofluid was accomplished in this work for improved heat transfer properties. Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR) analyses have confirmed the successful formation of the BaO nanoparticles. Thermal properties including thermal conductivity and viscosity of BaO nanoparticles based nanofluids were studied in detail. Thermal conductivities of the nanofluid at different weight percentages of nanoparticles (0.25%, 0.5%, 0.75%, and 1wt%) were measured at different temperatures ranging from 30°C to 50°C. Thermal conductivity of BaO-nanofluids was found to be enhanced in accordance with increase in temperature and weight fractions. The maximum thermal conductivity observed at 1wt% and 500C was 0.146W/mK. The corresponding viscosity was 16.5cP. In comparison with the base fluid, nanofluids exhibit greater thermal conductivity and viscosity.