An annular aluminum fin of rectangular profile is attached to a circular tube having an outside diameter of 25 mm and a surface temperature of 400°C. The fin is 1 mm thick and 18 mm long, and the temperature and the convection coefficient associated with the adjoining fluid are 25°C and 25 W/m².K, respectively. Evaluate the properties of aluminum at 400 K. (a) What is the heat loss per fin? (b) If 200 such fins are spaced at 5-mm increments along the tube length, what is the heat loss per meter of tube length?

An annular aluminum fin of rectangular profile is attached to a circular tube having an outside diameter of 25 mm and a surface temperature of 400°C. The fin is 1 mm thick and 18 mm long, and the temperature and the convection coefficient associated with the adjoining fluid are 25°C and 25 W/m².K, respectively. Evaluate the properties of aluminum at 400 K. (a) What is the heat loss per fin? (b) If 200 such fins are spaced at 5-mm increments along the tube length, what is the 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.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.8P

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