Question

A schedule 40 pipe (od : 114 mm) carrying safurated steam at 7.33 bar absolute runs through a room having a wall temperature 27"c. The insulation on a section of the pipe has been damaged exposing the pipe wall to the ambient. Calculate the net rate of heat loss from unit length of the pipe by radiation if (i) the pipe-surface is considered black (ii) the pipe surface has an emissivity of 0.74.

Answer 1

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