Heat transfer. An insulated steam pipe with negligible thickness has a length of L = 23 m and an inner radius of r = 50 mm. An insulation layer with a thickness of 10 mm and a thermal conductivity of k = 0.16 W m1 k1 is used. The inner and outer surfaces of the pipe insulation are maintained at average temperatures of T1 =110C and T2 = 60C, respectively. Neglecting the interface thermal resistance and assume 1-D heat transfer, determine the rate of heat loss in W from the steam through the pipe insulation. Provide the answer to one decimal place and enter the numerical value only (e.g. 20.1 but not 20.1 W). Add your answer