Question
The temperature of two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity K and 2K and thickness x and 4x, respectively are T2 and T1 (T2 > T1). The rate of heat transfer through the slab, in a steady state is
with f, equal to
-
1
-
1/2
-
2/3
-
1/3
Solution
D.
1/3
