The Heat Transfer from Fined Perforated Pipe Improved due to Nano-Fluid

In this research, experimental and numerical investigates were conducted on the effect of adding Nano fluid (α −AL₂O₃, γ − AL₂O₃, CuO) with different concentrations (1 %, 3%, and 5%) on the thermal properties of water. The heat exchanger system was designed with fin types with different holes (circular, triangular, elliptical and without holes). Thermal properties such as thermal conductivity, viscosity, specific heat, heat transfer coefficient, Nusselt number, Reynolds number have been studied experimentally and numerically. The results showed that the thermal properties increase with increasing the concentrations of nanomaterials and the Nusselt number increases with the increase of Reynolds number, and that the best type of fin is the fins with triangular holes. Copper oxide is the best at concentration (5%).Numerical simulation carried out on present heat exchange using consul computational fluid dynamic (CFD) the comparison between experimental and numerical results showed good. (paper)