Refractory bricks are used as linings for furnaces, and they generally have low thermal conductivity to minimize heat loss through the furnace walls. consider a thick furnace wall lining with refractory bricks (k = 1.0 w/m·k and α = 5.08 × 10−7 m2/s), where initially the wall has a uniform temperature of 15 °c. if the wall surface is subjected to uniform heat flux of 26 kw/m2, determine the temperature at a depth of 10 cm from the surface after an hour of heating time.