Estimate the rate of heat loss per unit length from a 5-cm ID, 6-cm OD steel pipe covered with high temperature insulation having a thermal conductivity of 0.11 W/(m K) and a thickness of 1.2 cm. Steam flows in the pipe. It has a quality of 99% and is at 150ºC. The unit thermal resistance at the inner wall is 0.0026 (m² K)/W the heat transfer coefficient at the outer surface is 17 W/(m² K) and the ambient temperature is 16ºC.