Problem 3 An annular aluminum (k = 240 W/m.K) fin of rectangular profile is attached to a circular tube that has an outside diameter of 30 mm and a surface temperature of 250°C. The fin is 2 mm thick and has an outside diameter of 88 mm. The temperature and the convection coefficient associated with the adjoining outside fluid are 25°C and 35 W/m?.K, respectively. (a) What is the heat loss per fin? (b) If 200 such fins are spaced uniformly per meter along the tube length, determine the %3D heat loss per meter of tube length.

Problem 3 An annular aluminum (k = 240 W/m.K) fin of rectangular profile is attached to a circular tube that has an outside diameter of 30 mm and a surface temperature of 250°C. The fin is 2 mm thick and has an outside diameter of 88 mm. The temperature and the convection coefficient associated with the adjoining outside fluid are 25°C and 35 W/m?.K, respectively. (a) What is the heat loss per fin? (b) If 200 such fins are spaced uniformly per meter along the tube length, determine the %3D heat loss per meter of tube 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.

Chapter6: Forced Convection Over Exterior Surfaces

Section: Chapter Questions

Problem 6.36P

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