A pipe with 8 cm intemal diametar, 9 cm puter diameter, 2 meter long, thermal conductivity 30Wimk is insulated byglass wool material with which thermal conductivity 0,05Wimk, thickness 4 cm. Internal surface temperature of thepipe Ti is 80°C, aurrounding temperature where pipe is located is 20°C, convection heat transfor constant on outersurface of insulation is 25WimK.30WimkT.- 20°Ch. - 25WimKAcmK=0,05Wimka. Dotomine the heat loss from the pipe to surrounding (W)?b. What is temperature of the surface between glass wooden and pipe (T2)?c What is critical insulation radius for pipe? is insulation on the pipe succesful? Explain

A pipe with 8 cm internal diameter, 9 cm outer diameter, 2 meter long, thermal conductivity 30W/mK is insulated by glass wool material with which thermal conductivity 0,05W/mK, thickness 4 cm. Internal surface temperature of the pipe T1 is 80°C, surrounding temperature where pipe is located is 20°C, convection heat transfer constant on outer surface of insulation is 25W/m²K. *30W/mK T. -20°C h.-25W/m²K

A pipe with 8 cm internal diameter, 9 cm outer diameter, 2 meter long, thermal conductivity 30W/mK is insulated by glass wool material with which thermal conductivity 0,05W/mK, thickness 4 cm. Internal surface temperature of the pipe T1 is 80°C, surrounding temperature where pipe is located is 20°C, convection heat transfer constant on outer surface of insulation is 25W/m²K. *30W/mK T. -20°C h.-25W/m²K

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.

Chapter3: Transient Heat Conduction

Section: Chapter Questions

Problem 3.10P: 3.10 A spherical shell satellite (3-m-OD, 1.25-cm-thick stainless steel walls) re-enters the...

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* Question A pipe with 8 cm intemal diameter, 9 cm outer diameter, 2 meter long, thermal conductivity 30Wimk is insulated by glass wool material wilth which thermal conductivity 0,0SW/MK, thickness 4 cm. Internal surface temperature of the pipe T1 is 80'C, surrounding temperature where pipe is located is 20°C, convection heat transfer constant on outer surface of insulation is 25Wim?k. K30Wimk T. 20°C h. = 25WimK K0.05Wimk a. Detemino the heat loss rom the pipe to surrounding (W)? b. What is tomperature of the surface between glass wooden and pipe (T2? e. What is critical insulation radius for pipe? is insulation on the pipe succeshul? Explain
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