The selection of fin is often motivated by a desire to minimize the fin material and/or related manufacturing costs required to achieve a prescribed cooling effectiveness. The pin fin was found to best
enhance the heat transfer rate. Nevertheless, its advantage is offset by the high manufacturing cost.Hence, a straight triangular fin is attractive because, for equivalent heat transfer, it requires much less volume (fin materials) than a rectangular profile. In this regard heat dissipation per unit volume is largest for a parabolic profile. However, since the heat dissipation per unit volume for the parabolic profile is only slightly larger than that for a triangular profile, its use can rarely be justified in view of its larger manufacturing cost [8].