Answered: om the steam pipe by 90% using a layer…

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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Transcribed Image Text:Superheated steam at 350 °C flows through a pipe whose thermal conductivity is kp = 16 W/m.K. The inner diameter and thickness of the pipe are 26 cm and 1 cm, respectively. The surrounding temperature is 28 °C. The convective heat transfer coefficient at the steam side and the outside of the pipe is 90 W/m?.K and 15 W/m?.K, respectively. Derive an expression for the temperature profile across the pipe thickness as a function of the radial position r. T. = 28 °C, h, = 15 W/m?.K T; = 350 °C h; = 90 W/m?.K Cross-sectional view of the pipe

Consider the steam pipe of Problem 1. The objective is to reduce the heat losses
from the steam pipe by 90% using a layer of glass fiber as the insulation. Determine
the required thickness of the insulation. The thermal conductivity of the glass fiber
is 0.04 W/m.K.
Insulation

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