Question: and 5 . 5 cm , respectively. The pipe is covered with 3 cm thick glass wool insulation ( k = 0 . 0 3

and 5.5 cm, respectively. The pipe is covered with 3 cm thick glass wool insulation (k=0.038W/m \\deg C).
Heat is lost to the surroundings at 5C by natural convection and radiation, with a combined natural
convection and radiation heat transfer coefficient of 15 W/m2
\\deg C. Taking the heat transfer coefficient
inside the pipe to be 80 W/m2
\\deg 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.

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