Air at 2 atm. and 20oC is heated as it passes through a tube of 25 mm ID with a velocity of 10m/s. The temperature of the tube wall is maintained at 100oC. Calculate heat transfer per unit length of the tube and the bulk temperature change over a 3m length of the tube

Air at 2 atm. and 20oC is heated as it passes through a tube of 25 mm ID with a velocity of 10m/s. The temperature of the tube wall is maintained at 100oC. Calculate heat transfer per unit length of the tube and the bulk temperature change over a 3m length of the tube

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 7.37P

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Question

Air at 2 atm. and 20oC is heated
as it passes through a tube of 25
mm ID with a velocity of 10m/s.
The temperature of the tube wall
is maintained at 100oC.
Calculate heat transfer per unit
length of the tube and the bulk
temperature change over a 3m
length of the tube

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Step 2: Calculation of heat transfer from 3 m length

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Step 3: Bulk temperature change

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