Question

consider a slab with L=25cm A=90cm² and the metal is copper .T_H=125^oc and T_c=10^oc and steady state is reached,find the conduction rate through the slab.

Answer 1

The Fourier's law says

$$P=\kappa\frac{\Delta T}{\Delta h}A$$

$$P=400\:\rm \frac{W}{m\cdot K}*\frac{(125-10)\: K}{0.25\: m}*90*10^{-4}\: m^2$$

$$P=1656\:\rm W$$