400 circumferential fins of rectangular profile (k = 386 W/m °C) are installed on a tube having a diameter of 3 cm and 1 m length that is maintained at a temperature of 200°C. The single fin has a length of 2 cm and a thickness of 0.7 mm. The heat is transferred to the surrounding air at 100°C with a convection heat-transfer coefficient of 524 W/m2 °C. How many times is the heat transfer rate enhanced when the fins are installed on the tube? 400 circumferential fins of rectangular profile (k = 386 W/m °C) are installed on a tubehaving a diameter of 3 cm and 1 m length that is maintained at a temperature of 200°C. Thesingle fin has a length of 2 cm and a thickness of 0.7 mm. The heat is transferred to thesurrounding air at 100°C with a convection heat-transfer coefficient of 524 W/m² °C. Howmany times is the heat transfer rate enhanced when the fins are installed on the tube?

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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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400 circumferential fins of rectangular profile (k = 386 W/m °C) are installed on a tube having a diameter of 3 cm and 1 m length that is maintained at a temperature of 200°C. The single fin has a length of 2 cm and a thickness of 0.7 mm. The heat is transferred to the surrounding air at 100°C with a convection heat-transfer coefficient of 524 W/m2 °C. How many times is the heat transfer rate enhanced when the fins are installed on the tube?

Transcribed Image Text:400 circumferential fins of rectangular profile (k = 386 W/m °C) are installed on a tube having a diameter of 3 cm and 1 m length that is maintained at a temperature of 200°C. The single fin has a length of 2 cm and a thickness of 0.7 mm. The heat is transferred to the surrounding air at 100°C with a convection heat-transfer coefficient of 524 W/m² °C. How many times is the heat transfer rate enhanced when the fins are installed on the tube?

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