Discussion Forum
Que.  The diagram shows heat conduction through a plane wall. The surface temperature is 475 K and it radiates heat to the surroundings at 335 K. If thermal conductivity of the material is 12.5 W/m degree, find the temperature gradient. Let convective coefficient be 80 W/m² degree and radiation factor is 0.9 
a.  – 1052.4 degree celsius 
b.  – 2052.4 degree celsius 
c.  – 3052.4 degree celsius 
d.  – 4052.4 degree celsius 
Correct Answer:– 1052.4 degree celsius
