ENHANCEMENT HEAT TRANSFER RATE BY USING NEW CONE SHAPE FINS WITH ELLIPSE BASE

Abstract

The application of using fins to lose excess heat is affected by many factors such as fin surface area, weight of fins, heat transfer coefficient, fins' material, orientation of fin surface of fins, Reynolds value due to the mutually effect between the inertia and viscous force for fluid flow. In this manuscript, Numerical simulation and experimental work was done to investigate the improvement of heat convection by using cone shape fin with ellipse base at low Reynolds number and arrangement as staggered. Where, the fluent Ansys 2020 R1 program is presented using modified K- (turbulent model). Moreover, the effect of curvature of the fin surface on the amount of heat driven was studied. The thermal dissipation of each type of fins are verification with the values of (h) heat transfer coefficient that obtained from relations which derived from conservation of energy. The various results of h at different value of fin distribution at air velocity (1 m/s and 2.5 m/s) are obtained. The results show that, the heat transfer coefficient increase as the fine surface increase. Also, there are a good relation between the surface shape and the amount of heat dissipation. The result compared with experimental values and gives a good agreement.