Steam flows through tubes whose outer radius is 2.5 cm and whose wall are maintained at a temperature of 135°C. Circular aluminum alloy fins (k = 170 W/m.°C) of outer diameter 7.5 cm and constant thickness at 3 mm, are attached with tubes. The space between two fins is 4 mm and there are 225 fins per meter length of the tube. The heat is transferred to the surrounding air at 30°C with h = 66 W/m2°C. Determine a) the increase in heat transfer from the tube per meter of its length as a .result of adding fins, b) the overall effectiveness of the finned tube

Steam flows through tubes whose outer radius is 2.5 cm and whose wall are maintained at a temperature of 135°C. Circular aluminum alloy fins (k = 170 W/m.°C) of outer diameter 7.5 cm and constant thickness at 3 mm, are attached with tubes. The space between two fins is 4 mm and there are 225 fins per meter length of the tube. The heat is transferred to the surrounding air at 30°C with h = 66 W/m2°C. Determine a) the increase in heat transfer from the tube per meter of its length as a .result of adding fins, b) the overall effectiveness of the finned tube

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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