A rectangular steel (k = 58.7 W/m * K) fin 25 mm thick and 150 mm long is attached to a wall that is at 250 C. The ambient air around the fin is at 20 C and the heat-transfer coefficient is 26 W/m^2 * K. Calculate:(a) The fin efficiency.(b) The rate of heat transfer from the fin per meter of fin width.Ans. (a) 77.9%. (b) 1456 W/m of width.
A rectangular steel (k = 58.7 W/m * K) fin 25 mm thick and 150 mm long is attached to a wall that is at 250 C. The ambient air around the fin is at 20 C and the heat-transfer coefficient is 26 W/m^2 * K. Calculate:(a) The fin efficiency.(b) The rate of heat transfer from the fin per meter of fin width.Ans. (a) 77.9%. (b) 1456 W/m of width.
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A rectangular steel (k = 58.7 W/m * K) fin 25 mm thick and 150 mm long is attached to a wall that is at 250 C. The ambient air around the fin is at 20 C and the heat-transfer coefficient is 26 W/m^2 * K. Calculate:
(a) The fin efficiency.
(b) The rate of heat transfer from the fin per meter of fin width.
Ans. (a) 77.9%. (b) 1456 W/m of width.
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