The temperature of two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity K and 2 K and thickness x and 4 x , respectively are T 2 and T 1

Question

The temperature of two outer surfaces of a composite slab, consisting of two materials having coefficients of thermal conductivity $K$ and $2 K$ and thickness $x$ and $4 x$ , respectively are $T_{2}$ and $T_{1} (T_{2} > T_{1})$ . The rate of heat transfer through the slab, in a steady state is $(\frac{A ( T _{2} - T _{1} ) K}{x}) f$ , with $f$ equal to

TestHub · Accepted Answer

Δ q = x kA ​ [ T 2 ​ − 3 2 T 2 ​ − T 1 ​ ​ ] = 3 x kA ​ [ T 2 ​ − T 1 ​ ]

Physics - Heat & Thermo Question with Solution | TestHub

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