Abstract
ABSTRACT In this study, nanofluids were produced from CuO nanoparticles decorated with Ag atoms at different mass concentrations, and their cooling performance was examined in a channel containing metal foam heat sinks (MFHS) with pore densities of 10 and 40 pore per inch (PPI). CuO-H2O/2% Polyethylene Imine (PEI) nanofluid with a concentration of 0.1% by mass was used. The surfaces of the CuO nanoparticles were decorated with Ag at mass concentrations of 0.03%, 0.05%, and 0.1%. Experiments were performed for volumetric flow rates varying from 17.6 L/h to 76.5 L/h in laminar conditions, and the heat fluxes applied to the bottom of the channel were chosen in the range of 3267 W/m2-5400 W/m2. The base fluid (BF)-empty surface case was used as the reference for all measurements. In the findings of experiments conducted on the base surface, it was found that decorating CuO nanoparticles with 0.03% and 0.05% Ag atoms effectively lowers the surface temperatures compared to the BF. On the contrary, an increase in surface temperatures was detected when 0.1% Ag atoms were used. Passing a 0.1% CuO-0.05% Ag/2% PEI-H2O (NF3) nanofluid through 40 PPI MFHS’ achieved the highest improvement in mean surface temperatures, with a 37.4% increase compared to using the BF on the empty surface.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call