In distillation of kerosene, a steel pipeline (k = 47 W/m.°C) with inside surface temperature of 250°C has an inside diameter of 8 cm and a wall thickness of 5.5 mm. It is covered with a 5- cm layer...

Extracted text: In distillation of kerosene, a steel pipeline (k = 47 W/m.°C) with inside surface temperature of 250°C has an inside diameter of 8 cm and a wall thickness of 5.5 mm. It is covered with a 5- cm layer of brick insulation (k = 0.5 W/m.°C), followed by a 4-cm layer board insulation (k = 0.25 W/m.°C). If the outside temperature of the insulation is 20°C, calculate the heat loss per meter length.