For a furnace wall, draw the thermal circuit, determine the rate of heat flow per unit area, and estimate the exterior surface temperature if (a) the convection heat transfer coefficient at the...

For a furnace wall, draw the thermal circuit, determine

the rate of heat flow per unit area, and estimate the

exterior surface temperature if (a) the convection heat

transfer coefficient at the interior surface is 15 W/m2 K

(b) the rate of heat flow by radiation from hot gases and

soot particles at 2000°C to the interior wall surface is

45,000 W/m2 (c) the unit thermal conductance of the

wall (interior surface temperature is about 850°C) is

250 W/m2 K and (d) there is convection from the outer

surface.