An aluminium alloy fin of 7 mm thick and 50 mm long protrudes from a wall, which is maintained at 120?C. The ambient air temperature is 22?C. The heat transfer coefficient and conductivity of the fin material are 140 W/m2K and 55 W/mK respectively.
Determine
1. Temperature at the end of the fin.
2. Temperature at the middle of the fin.
3. Total heat dissipated by the fin.