Heat is transferred by conduction (assumed to be one dimensional) along the axial direction through the truncated conical section shown in the figure. The two base surfaces are maintained at constant temperatures: T₁at the top, and T₂, at the bottom, where T₁> T₂. Evaluate the heat-transfer rate, q_x, when
a. The thermal conductivity is constant
b. The thermal conductivity varies with temperature according to k = k_o - αT, where α is a constant

Transcribed Image Text:

T1, A1 T2, A2 х