Fin Heat Transfer Example. C pc 4200 jkgk c ph 1000 jkgk dm c dt 1 kgs dm h dt 17 kgs t ci 40 degrees celsius t hi 280 degrees celsius a s 07 m 2 heat transfer surface area r w 40 10 5 kw wall thermal resistance h c 1000 wm 2 k convection. Heat transfer from finned surfaces a b wt a rec.
The fin must be made of a good thermal conductor. These are generally used to increase the heat transfer rate to the environment. Muddy points how do we quantify the contribution of each mode of heat transfer in a given situation.
The amount of conduction convection or radiation of an object determines the amount of heat it transfers.
If the temperature difference is increased the amount of heat flow will be increased. There are mainly four types of fins 1 constant area straight fin 2 variable area straight fin 3 pin fin 4 annular fin. Consider the heat sink in example 1 with heat generated by a 4 x 4 mm led die set in the middle of the plane as show in figure 4. Radiation is the only method for heat transfer in space.