8.71 A 50-mm-diameter, thin-walled metal pipe covered with a 25-mm-thick layer of insulation (0.085 W/m.K) and carrying superheated steam at atmospheric pressure is suspended from the ceiling of a large room. The steam temperature entering the pipe is 120°C, and the air tem- perature is 20°C. The convection heat transfer coefficient on the outer surface of the covered pipe is 10 W/m².K. If the velocity of the steam is 10 m/s, at what point along the pipe will the steam begin condensing?

8.71 A 50-mm-diameter, thin-walled metal pipe covered with a 25-mm-thick layer of insulation (0.085 W/m.K) and carrying superheated steam at atmospheric pressure is suspended from the ceiling of a large room. The steam temperature entering the pipe is 120°C, and the air tem- perature is 20°C. The convection heat transfer coefficient on the outer surface of the covered pipe is 10 W/m².K. If the velocity of the steam is 10 m/s, at what point along the pipe will the steam begin condensing?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

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8.71 A 50-mm-diameter, thin-walled metal pipe covered with
a 25-mm-thick layer of insulation (0.085 W/m.K) and
carrying superheated steam at atmospheric pressure is
suspended from the ceiling of a large room. The steam
temperature entering the pipe is 120°C, and the air tem-
perature is 20°C. The convection heat transfer coefficient
on the outer surface of the covered pipe is 10 W/m².K.
If the velocity of the steam is 10 m/s, at what point along
the pipe will the steam begin condensing?

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