Steam at 320°c flows in a stainless steel pipe (k =15 w/m "c) whose inner and outer diameters are 5 cm and 5.5 cm, respectively. the pipe is covered with 3-cm-thick glass wool insulation (k = 0.038 w/m - °c). heat is lost to the surroundings at 5°c by natural convection and radiation, with a combined natural convection and radiation heat transfer coefficient of 15 w/m2.°с. taking the heat transfer coefficient inside the pipe to be 80 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.