A steady-state, finite-difference analysis has been performed on a cylindrical fin with a diameter of 12 mm and a thermal conductivity of 15 W/m ∙ K. The convection process is characterized by a fluid temperature of 25°C and a heat transfer coefficient of 25 W/m2 ∙ K.

(a) The temperatures for the first three nodes, separated by a spatial increment of x = 10 mm, are given in the sketch. Determine the fin heat rate.

(b) Determine the temperature at node 3, T3.

Transcribed Image Text:

To = 100.0°C %3D 1 D T, - 93.4°C I T2 = 89.5°C Lex Lex