Engineering

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25 September, 18:17

Steam flowing through a long, thin walled pipe maintains the pipe wall at a uniform temperature of 500 K. The pipe is covered with an insulation blanket comprised of two different materials, A and B. The interface between the two materials may be assumed to have an infinite contact resistance, and the entire outer surface is exposed to air for which T? = 300 K and h = 25 W/m2K. a. Sketch the thermal circuit of the system. Label all pertinent nodes and resistancesb. For the prescribed conditions, what is the total heat loss from the pipe? What are the outer surface temperatures Ts, 2 (A) and Ts, 2 (B) ?