In present work, forced convection of a turbulent flow of, Al2O3/water nanofluid and Al-Al2O3/water hybrid nanofluid (a new advanced nanofluid composited of Al and Al2O3 nanoparticles) through a double pipe heat exchanger is numerically analyzed. The solid model of the double pipe heat exchanger is created in design modular and analyzed by the computational software ANSYS 16.0.This work examines the effects of these two fluids as the working fluids, a wide range of Reynolds number (20000 = Re = 60000) and also the volume concentration (0.25%, and 0.5%) on heat transfer and hydrodynamic performance. The finite volume discretization method is employed to solve the set of the governing equations. The results indicate that employing hybrid nanofluid improves the heat transfer rate with respect to nanofluid. However, the average increase of the average Nusselt number (when compared to nanofluid) in Al-Al2O3/water hybrid nanofluid is 14% and the amount for the average increase of heat transfer coefficient would be 27.5%.
Hybrid nanofluid; forced convection; Reynold’s number; heat transfer enhancement; Nusselt number; CFD
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