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Air enters a 100 meter long duct at 300K and 4 bars with a velocity of 34.7m/s. The duct diameter is 5cm. What is the heat transfer needed, in kJ/kg, for the flow to choked?

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 7.39P

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Question

Air enters a 100 meter long duct at 300K
and 4 bars with a velocity of 34.7m/s. The
duct diameter is 5cm. What is the heat
transfer needed, in kJ/kg, for the flow to
choked?

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