Q7. A metal steam pipe having an outside diameter of 30 mm has a surface temperature of 400 K and is to be insulated with an insulation having a thickness of 20 mm and a k of 0.08 W/m. K. The pipe is exposed to air at 300 K and a convection film coefficient of 30 W/m²K. a) Calculate the critical radius and the heat loss per m of length for the bare pipe. b) Calculate the heat loss for the insulated pipe assuming that the surface temperature of the pipe remains constant. having OF 1.1/1.- at
Q7. A metal steam pipe having an outside diameter of 30 mm has a surface temperature of 400 K and is to be insulated with an insulation having a thickness of 20 mm and a k of 0.08 W/m. K. The pipe is exposed to air at 300 K and a convection film coefficient of 30 W/m²K. a) Calculate the critical radius and the heat loss per m of length for the bare pipe. b) Calculate the heat loss for the insulated pipe assuming that the surface temperature of the pipe remains constant. having OF 1.1/1.- at
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:Q7. A metal steam pipe having an outside diameter of 30 mm has a
surface temperature of 400 K and is to be insulated with an
insulation having a thickness of 20 mm and a k of 0.08 W/m. K.
The pipe is exposed to air at 300 K and a convection film coefficient
of 30 W/m²K.
a) Calculate the critical radius and the heat loss per m of length for
the bare pipe.
b) Calculate the heat loss for the insulated pipe assuming that the
surface temperature of the pipe remains constant.
having
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