Water flows at 50°C inside a 2.5-cm-inside-diameter tube such that hi = 3500 W/m² .°C. The tube has a wall thickness of 0.8 mm with a thermal conductivity of 16 W/m -°C. The outside of the tube loses heat by free convection with ho =7.6 W/m2 .°C. Calculate the overall heat-transfer coefficient and heat loss per unit length to surrounding air at 20°C. %3D
Water flows at 50°C inside a 2.5-cm-inside-diameter tube such that hi = 3500 W/m² .°C. The tube has a wall thickness of 0.8 mm with a thermal conductivity of 16 W/m -°C. The outside of the tube loses heat by free convection with ho =7.6 W/m2 .°C. Calculate the overall heat-transfer coefficient and heat loss per unit length to surrounding air at 20°C. %3D
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 7.29P
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