Insulation of a Furnace. A wall of a furnace 0.244 m thick is constructed of material having a thermal conductivity of 1.30 W/m · K. The wall will be insulated on the outside with material having an...

Extracted text: Insulation of a Furnace. A wall of a furnace 0.244 m thick is constructed of material having a thermal conductivity of 1.30 W/m · K. The wall will be insulated on the outside with material having an average k of 0.346 W/m · K, so the heat loss from the furnace will be equal to or less than 1830W/m2. The inner surface temperature is 1588 K and the outer 299 K. Calculate the thick ness of insulation required. Ans. 0.179 m