Water flows at 50 C inside a 2.5-cm-inside-diameter tube such that h, =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 h, =7.6W/m²C. Calculate the overall heat-transfer coefficient and heat loss per unit length to surrounding air at 20 C.

Water flows at 50 C inside a 2.5-cm-inside-diameter tube such that h, =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 h, =7.6W/m²C. Calculate the overall heat-transfer coefficient and heat loss per unit length to surrounding air at 20 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.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.18P: The heat transfer coefficient for a gas flowing over a thin float plate 3-m long and 0.3-m wide...

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