A smooth, flat, thin fin of copper extending out from a tube is 51 mm by 51 mm square. Its temperature is approximately uniform at 82.2° C. Cooling air at 15.6° C and 1 atm abs flows parallel to the fin at a velocity of 12.2 m/s. a)For laminar flow, calculate the heat-transfer coefficient, h. b)If the leading edge of the fin is rough so that all of the boundary layer or film next to the fin is completely turbulent, calculate h. [77.2 W/m²] For air at 48.9° C: µ = 1.9×10-5 Pa s, p= 1.097 kg/m³, k = 0.028 W/m K and Np, = 0.704
A smooth, flat, thin fin of copper extending out from a tube is 51 mm by 51 mm square. Its temperature is approximately uniform at 82.2° C. Cooling air at 15.6° C and 1 atm abs flows parallel to the fin at a velocity of 12.2 m/s. a)For laminar flow, calculate the heat-transfer coefficient, h. b)If the leading edge of the fin is rough so that all of the boundary layer or film next to the fin is completely turbulent, calculate h. [77.2 W/m²] For air at 48.9° C: µ = 1.9×10-5 Pa s, p= 1.097 kg/m³, k = 0.028 W/m K and Np, = 0.704
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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