Heat Transfer from Longitudinally Finned Cylinder with Different Inclination angles inside Adiabatic Duct


This study deals with heat transfer by free convection from the outer surface oftwo cylinders (Triangular & Rectangular shape fined cylinder 8-fins). Theexperimental work was conducted with air as a heat transport medium. Thecylinders were fixed at horizontal rectangular duct and fixed at different inclinationangles (0o, 30o, 60o, 90o) .The heat fluxes were (279, 1012, 1958, 3005, 4419)W/m2. Where heat transferred by convection and radiation. The results show theheat transferred from the triangular finned cylinder is maximum at slop angle (30o)and minimum at the slop angle (0o) with the range from [Ra = (1.68*107 –3.46*108)].