T0 2-Water is heated as it flows through a square duct with side a=2 cm and the mean velocity through each is U = 3.2 cm/s. Duct is heated electrically by 2000 W/m2 into the water. Assuming that the water properties can be evaluated at 50◦C and that the flow is thermally fully developed: (a) Verify that the flow is laminar. (b) Calculate heat transfer coefficient (c) the mean temperature difference between the wall and the water stream. (d) Calculate the rate of temperature increase along the channel, (e) calculate pressure drop per unit length

T0 2-Water is heated as it flows through a square duct with side a=2 cm and the mean velocity through each is U = 3.2 cm/s. Duct is heated electrically by 2000 W/m2 into the water. Assuming that the water properties can be evaluated at 50◦C and that the flow is thermally fully developed: (a) Verify that the flow is laminar. (b) Calculate heat transfer coefficient (c) the mean temperature difference between the wall and the water stream. (d) Calculate the rate of temperature increase along the channel, (e) calculate pressure drop per unit length

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 7.27P

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