A cast iron pipe is used to transfer steam with an inlet temperature of 450 C. Inner radius of the pipe is 10 cm. The thickness of the pipe (k=18 W/(mK)) is 0.8 cm and there is an insulation (k=0.15 W/mk) over the pipe with a thickness of 7 cm. Environmental temperature is -10 C. Determine the steady heat loss from the pipe if the steam convection coefficient is 90 W/(m^2K) and environment convection coefficient is 18 WI(m^2K)? Is insulation thickness enough?

A cast iron pipe is used to transfer steam with an inlet temperature of 450 C. Inner radius of the pipe is 10 cm. The thickness of the pipe (k=18 W/(mK)) is 0.8 cm and there is an insulation (k=0.15 W/mk) over the pipe with a thickness of 7 cm. Environmental temperature is -10 C. Determine the steady heat loss from the pipe if the steam convection coefficient is 90 W/(m^2K) and environment convection coefficient is 18 WI(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 7.4P

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