A 0.5-m-diameter pipe (ɛ = 0.9) carrying steam has a surface temperature of 500 K (see Fig. 1.25). The pipe is located in a room at 300 K, and the convection heat trans- fer coefficient between the pipe surface and the air in the room is 20 W/m2 K. Calculate the combined heat transfer coefficient and the rate of heat loss per meter of pipe length. %3D

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)
8th Edition
ISBN:9781305387102
Author:Kreith, Frank; Manglik, Raj M.
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Chapter2: Steady Heat Conduction
Section: Chapter Questions
Problem 2.62P
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A 0.5-m-diameter pipe (ɛ = 0.9) carrying steam has a surface temperature of 500 K
(see Fig. 1.25). The pipe is located in a room at 300 K, and the convection heat trans-
fer coefficient between the pipe surface and the air in the room is 20 W/m2 K.
Calculate the combined heat transfer coefficient and the rate of heat loss per meter
of pipe length.
Room temperature = 300 K
Pipe surface
temperature = 500 K
Pipe
Steam
ɛ=0.9
FIGURE 1.25 Schematic diagram of steam pipe for Example 1.10.
Transcribed Image Text:A 0.5-m-diameter pipe (ɛ = 0.9) carrying steam has a surface temperature of 500 K (see Fig. 1.25). The pipe is located in a room at 300 K, and the convection heat trans- fer coefficient between the pipe surface and the air in the room is 20 W/m2 K. Calculate the combined heat transfer coefficient and the rate of heat loss per meter of pipe length. Room temperature = 300 K Pipe surface temperature = 500 K Pipe Steam ɛ=0.9 FIGURE 1.25 Schematic diagram of steam pipe for Example 1.10.
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