3. A pipe 200 mm outside diameter and 20 m length is covered with a layer, 70 mm thick of insulation having a thermal conductivity of 0.05 W/m-K and a thermal conductance of 10 W/m²-k at the outer surface. If the temperature of the pipe is 350 deg C and the ambient temperature 15 deg C, calculate the external surface temperature of the lagging.
3. A pipe 200 mm outside diameter and 20 m length is covered with a layer, 70 mm thick of insulation having a thermal conductivity of 0.05 W/m-K and a thermal conductance of 10 W/m²-k at the outer surface. If the temperature of the pipe is 350 deg C and the ambient temperature 15 deg C, calculate the external surface temperature of the lagging.
Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
Publisher:Kreith, Frank; Manglik, Raj M.
Chapter2: Steady Heat Conduction
Section: Chapter Questions
Problem 2.18P: Estimate the rate of heat loss per unit length from a 5-cm ID, 6-cm OD steel pipe covered with...
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![3. A pipe 200 mm outside diameter and 20 m length is covered with a layer, 70 mm thick of insulation having a
thermal conductivity of 0.05 W/m-K and a thermal conductance of 10 W/m²-k at the outer surface. If the
temperature of the pipe is 350 deg C and the ambient temperature 15 deg C, calculate the external surface
temperature of the lagging.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc8cde41d-06dc-4e6f-b4da-2df18855c30a%2Fe9e626a2-d2c0-40ef-b4da-3003a2d0ae25%2F77kurt_processed.jpeg&w=3840&q=75)
Transcribed Image Text:3. A pipe 200 mm outside diameter and 20 m length is covered with a layer, 70 mm thick of insulation having a
thermal conductivity of 0.05 W/m-K and a thermal conductance of 10 W/m²-k at the outer surface. If the
temperature of the pipe is 350 deg C and the ambient temperature 15 deg C, calculate the external surface
temperature of the lagging.
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