‏Q1 / A5 - cm - diameter steel pipe is covered with a 1 - cm layer of insulating material having k = 0.22 W / m . ° C followed by a 3 - cm - thick layer of another insulating material having k = 0.06 W / m . ° C . The system is exposed to a convection surrounding condition of h = 60 W / m² . ° C and T -15 ° C . The outside surface temperature of the steel pipe is 400 ° C . Calculate the heat lost by the pipe - insulation assembly for a pipe length of 20 m . Express in Watts . Q1/ A5-cm-diameter steel pipe is covered with a 1-cm layer of insulating material0.22 W/m. °C_followed by a 3-cm-thick layer of another insulatinghaving k =material having k= 0.06 W/m.°C. The system is exposed to a convection surroundingcondition of h= 60 W/m².°C and T. =ls.C The outside surface temperature of the%3Dsteel pipe is 400•C. Calculate the heat lost by the pipe-insulation assembly for a pipeIength of 20 m. Express in Watts.(35 M)

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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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‏Q1 / A5 - cm - diameter steel pipe is covered with a 1 - cm layer of insulating material having k = 0.22 W / m . ° C followed by a 3 - cm - thick layer of another insulating material having k = 0.06 W / m . ° C . The system is exposed to a convection surrounding condition of h = 60 W / m² . ° C and T -15 ° C . The outside surface temperature of the steel pipe is 400 ° C . Calculate the heat lost by the pipe - insulation assembly for a pipe length of 20 m . Express in Watts .

Q1/ A5-cm-diameter steel pipe is covered with a 1-cm layer of insulating material
0.22 W/m. °C_followed by a 3-cm-thick layer of another insulating
having k =
material having k= 0.06 W/m.°C. The system is exposed to a convection surrounding
condition of h= 60 W/m².°C and T. =ls.C The outside surface temperature of the
%3D
steel pipe is 400•C. Calculate the heat lost by the pipe-insulation assembly for a pipe
Iength of 20 m. Express in Watts.
(35 M)

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