Steam at To,1 300 C flows in a cast iron pipe [k = 80 W/ m....

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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 = 5°C 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. 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 = 5°C 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.