Question: In Appendix A, dimensions of standard steel pipe are given. Suppose a 3-in schedule 80 pipe is covered with 1 in of an insulation having

In Appendix A, dimensions of standard steel pipe are given. Suppose a 3-in schedule 80 pipe is covered with 1 in of an insulation having k = 60 m W/m ∙ ºC and the outside of the insulation is exposed to an environment having h = 10 W/m2 ∙ ºC and T∞ = 20ºC. The temperature of the inside of the pipe is 250ºC. For unit length of the pipe calculate
(a) Overall thermal resistance and
(b) Heat loss.

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