A cast iron pipe is used to transfer steam with an inlet temperature of 300 C. Inner radius of the pipe is 15 cm. The thickness of the pipe (k=25 W/(mK)) is 0.7 cm and there is an insulation (k=0.05 W/mK) over the pipe with a thickness of 5 cm. Environmental temperature is -8 C. Determine the steady heat loss from the pipe if the steam convection coefficient is 80 W/(m^2K) and environment convection coefficient is 25 W/(m^2K)? Is insulation thickness enough?
A cast iron pipe is used to transfer steam with an inlet temperature of 300 C. Inner radius of the pipe is 15 cm. The thickness of the pipe (k=25 W/(mK)) is 0.7 cm and there is an insulation (k=0.05 W/mK) over the pipe with a thickness of 5 cm. Environmental temperature is -8 C. Determine the steady heat loss from the pipe if the steam convection coefficient is 80 W/(m^2K) and environment convection coefficient is 25 W/(m^2K)? Is insulation thickness enough?
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.
Chapter7: Forced Convection Inside Tubes And Ducts
Section: Chapter Questions
Problem 7.27P
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A cast iron pipe is used to transfer steam with an inlet temperature of 300 C. Inner radius of the pipe is 15 cm. The thickness of the pipe (k=25 W/(mK)) is 0.7 cm and there is an insulation (k=0.05 W/mK) over the pipe with a thickness of 5 cm. Environmental temperature is -8 C. Determine the steady heat loss from the pipe if the steam convection coefficient is 80 W/(m^2K) and environment convection coefficient is 25 W/(m^2K)? Is insulation thickness enough?
![A cast iron pipe is used to transfer steam with an inlet temperature of 300
C. Inner radius of the pipe is 15 cm. The thickness of the pipe (k=25
W/(mK)) is 0.7 cm and there is an insulation (k=0.05 W/mK) over the pipe
with a thickness of 5 cm. Environmental temperature is -8 C. Determine
the steady heat loss from the pipe if the steam convection coefficient is
80 W/(m^2K) and environment convection coefficient is 25 W/(m^2K)? Is
insulation thickness enough?
steam
steam](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fadc8211c-ae15-43e3-a070-e5d9f521f7c8%2F7ac2c680-ded3-49ff-b7b1-0995d3718220%2Fcmhj85_processed.png&w=3840&q=75)
Transcribed Image Text:A cast iron pipe is used to transfer steam with an inlet temperature of 300
C. Inner radius of the pipe is 15 cm. The thickness of the pipe (k=25
W/(mK)) is 0.7 cm and there is an insulation (k=0.05 W/mK) over the pipe
with a thickness of 5 cm. Environmental temperature is -8 C. Determine
the steady heat loss from the pipe if the steam convection coefficient is
80 W/(m^2K) and environment convection coefficient is 25 W/(m^2K)? Is
insulation thickness enough?
steam
steam
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