One face of a furnace wall is at 1030°C and the other face is exposed to room temperature (30°C). If the thermal conductivity of furnace wall is 3 W. m-1. k-1 and the wall thickness is 0.3 m, the maximum heat loss (in W/m) is____________________?
Correct answer: A
Explanation
Heat loss is calculated using Fourier's Law: Q/A = k * (T1 - T2) / L. Plugging in the values gives approximately 100 W/m.