2. The wall of a furnace is made up of a material which has thermal conductivity of 3.5 W/mC and a thicknesses 400 mm. The inner side of the furnace wall is exposed to hot gases at 1000 C with a convection coefficient of 40 W/m2C and the inside the surface of the wall is at 600 C. The air outside the furnace is at 18 C with a convection coefficient of 15 W/m2C. Draw a clear diagram representing the system [1 mark] a. b. Determine the temperature of the outside surface of the furnace [1 mark] rate heat loss from the furnace. [1 mark] The of