Question: A steady-state, finite-difference analysis has been performed on a cylindrical fin with a diameter of D = 12 mm and a thermal conductivity of

A steady-state, finite-difference analysis has been performed on a cylindrical fin with a diameter of D = 12 mm and a thermal conductivity of 15 W/m-K. The convection process is characterized by a fluid temperature of T.= 25C and a heat transfer coefficient of h = 25 W/mK. Assume To = 100.0C, T = 93.4C, and T2 = 89.5C. (a) The temperatures for the first three nodes, separated by a spatial increment of Ax = 10 mm, are given in the sketch. Determine the fin heat rate. (b) Determine the temperature at node 3, T3. T, h T T T (a) af (b) T3 = = i i Ax W

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