In the present work of heat transfer for hexagonal fins (1mm & 2mm) grooves on surface and threaded fin is
addressed. The test has been performed on three different fin geometries having hexagonal (1mm)groove,
hexagonal(2mm)groove, threaded fin(0.5mm)pitch and test performed by using a centrifugal blower, test section, heater and
test panel and Results are obtained for temperature distribution, effectiveness, efficiencies at a same flow rate of air as it was
conducted in forced convection and the same parameters considered for different values are obtained for natural convection
with different fins as well. In this experiment for forced convection, the airflow rate is constant i.e, 2.3371 m/sec throughout
the experiment. In natural convection, efficiency for the threaded fin is high with 93.89% and effectiveness of
hexagonal(2mm)depth fin is 28.11. In forced convection, the efficiency of the threaded fin is high with 81.83% and
effectiveness of hexagonal(1mm)depth fin is high with 23.51 was recorded. The heat transfer rate is higher in natural
convection is hexagonal(2mm)depth fin with 11.41 watts and 21.75 watts in forced convection with hexagonal(1mm)depth
fin
A parametric thermal analysis of triangular fins for improved heat transfer in forced convection
