Consider a 10-m-long smooth rectangular tube, with a = 50 mm and b = 25 mm, that is maintained at a constant surface temperature. Liquid water enters the tube at 20°C with a mass flow rate of 0.01 kg/s. Determine the tube surface temperature necessary to heat the water to the desired outlet temperature of 80°C.

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 7.43P: 7.43 Liquid sodium is to be heated from 500 K to 600 K by passing it at a flow rate of 5.0 kg/s...
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Consider a 10-m-long smooth rectangular tube, with
a = 50 mm and b = 25 mm, that is maintained at a constant
surface temperature. Liquid water enters the tube at
20°C with a mass flow rate of 0.01 kg/s. Determine the tube
surface temperature necessary to heat the water to the desired
outlet temperature of 80°C.

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