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A pin fin of uniform, cross-sectional area is fabricated of an aluminum alloy (k=160W/mK). The fin diameter is D=7mm, and the fin is exposed to

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A pin fin of uniform, cross-sectional area is fabricated of an aluminum alloy (k=160W/mK). The fin diameter is D=7mm, and the fin is exposed to convective conditions characterized by h=220W/m2K. It is reported that the fin efficiency is f=0.75. Determine (a) the fin length L and the fin effectiveness f. Account for tip convection. (a) L= mm (b) tf=

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