Steam at 320oC flows in a stainless steel pipe k = 15 W/mK, whose inner and outer diameters are 5cm and 5.5cm respectively. The pipe is covered with 3cm thick glass wool insulation (k = 0.038 W/mk). Heat is lost to the surroundings of 5oC by natural convection and radiation heat transfer of a total coefficient 15 W/m2K. Taking the heat transfer coefficient inside the pipe to be 80 W/m2K, determine the rate of heat loss from the steam per unit length of the pipe. Also determine the temperature drops across the pipe shell and insulation.

Steam at 320oC flows in a stainless steel pipe k = 15 W/mK, whose inner and outer diameters are 5cm and 5.5cm respectively. The pipe is covered with 3cm thick glass wool insulation (k = 0.038 W/mk). Heat is lost to the surroundings of 5oC by natural convection and radiation heat transfer of a total coefficient 15 W/m2K. Taking the heat transfer coefficient inside the pipe to be 80 W/m2K, determine the rate of heat loss from the steam per unit length of the pipe. Also determine the temperature drops across the pipe shell and insulation.

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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