Solve Problem 15.1 if, in addition to a varying cross-sectional area, the thermal conductivity varies according to k = k0 (1 + βT), where k0 = 0.138, β = 1.95 × 10–4, T = temperature in Kelvin, and k is in W/m · K. Compare this result to that using a k value evaluated at the arithmetic mean temperature.
Problem 15.1
An asbestos pad is square in cross section, measuring 5 cm on a side at its small end, increasing linearly to 10 cm on a side at the large end. The pad is 15 cm high. If the small end is held at 600 K and the large end at 300 K, what heat-flow rate will be obtained if the four sides are insulated? Assume one-dimensional heat conduction. The thermal conductivity of asbestos may be taken as 0.0173 W/m · K.
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.