Fin Efficiency Calculator

Calculate fin efficiency, heat transfer rate, and overall surface efficiency for extended surfaces (fins).

Thermal conductivity of fin material. Aluminum: 200, Copper: 385 W/mK.
W/m·K
Average heat transfer coefficient. Natural air: 5-25, Forced: 25-250 W/m²K.
W/m²·K
Length of the fin from base to tip.
mm
Thickness of the rectangular fin.
mm
Width of the fin (into the page).
mm
Temperature at the fin base (wall temperature).
°C
Surrounding fluid temperature.
°C

Results

Fin Parameter m-1/m
Fin Efficiency-%
Fin Heat Transfer-W
Max Possible Heat Transfer-W
References: Incropera — Heat Transfer; Kraus — Extended Surface Heat Transfer