Steam at To,1 300 C flows in a cast iron pipe [k = 80 W/ m. C] whose inner and outer diameter are D1 = 4 cm and D2 = 5 cm, respectively. The pipe is covered with a 3 cm thick glass wool insulation [k = 0.05 W/ m.CJ. Heat is lost to the surroundings at Too,2 = 5C by natural convection and radiation, with a combined heat transfer coefficient of h2 = 18 W/m2. C. Taking the heat transfer coefficient inside the pipe to be hl 60 W/m2K, determine the rate of heat loss from the steam per unit length of the pipe. Also determine the temperature drop across the pipe shell and the insulation.