Abstract
Nano-fluid is a suspension of nano particles in the base fluids like water to enhance heat transfer. Nano-fluids is a class of fluids used for the cooling and heating process. This paper reports an investigation of the optimum concentration of AL<sub>2</sub>O<sub>3</sub> in water for solar application based on stability checking using the zeta potential method. In this study, computational fluid dynamics analysis was performed using the Ansyss Fluent software for the different concentrations. Results are analyzed, and simulated result shows that heat transfer coefficient increases as concentration increase, and for a given geometry, Nusselt number rises as Reynolds number rises, which is used for the solar application.
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