Steam at 380 °C flows in a stainless steel pipe [k=19 W/(m. °C)] whose inner and outer diameters are 8 cm and 10 cm,

respectively. The pipe is covered with 4.5-cm-thick glass wool insulation [k=0.042 W/(m. °C)]. Heat is lost to the

surroundings at 10 °C by natural convection and radiation, with a combined natural convection and radiation heat transfer

coefficient of 22 W/(m2.°C). Taking the heat transfer coefficient inside the pipe to be 86 W/(m². C), determine the rate of

heat loss from the steam per unit length of the pipe. Also determine the temperature drops across the pipe shell and the

insulation.