Steam passes at 250 ° C through a steel pipe with an inner diameter of 60 mm and an outer diameter of 75 mm. Pipe The heat transfer coefficients inside and outside are 500 and 25 W / m2K, respectively. Ambient temperature 20 ° C and The heat conduction coefficient of the pipe is 56.5 W / mK. a)Find the heat loss from the 5 m length of the pipe. b)What thickness of material with heat transfer coefficient 0.035 W / mK to reduce heat loss by 95%? insulation should be made.

Steam passes at 250 ° C through a steel pipe with an inner diameter of 60 mm and an outer diameter of 75 mm. Pipe The heat transfer coefficients inside and outside are 500 and 25 W / m2K, respectively. Ambient temperature 20 ° C and The heat conduction coefficient of the pipe is 56.5 W / mK. a)Find the heat loss from the 5 m length of the pipe. b)What thickness of material with heat transfer coefficient 0.035 W / mK to reduce heat loss by 95%? insulation should be made.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter11: Columns

Section: Chapter Questions

Problem 11.2.15P: Repeat Problem 11.2-14 using L = 12 ft, ß = 0.25 kips/in., ßRl= 1.5ßL2, and ßR2= 2 ßR1.

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