Square section pin fins with side W= 2 mm and length L = 25 mm are used to enhance heat transfer from a maintained surface at Tb = 150°C. One end of the fin is attached at x = 0, while the other end (x = 25 mm) can be considered insulated. Air flowing between over the fins is also at a temperature, T. = 30°C, and a constant convection coefficient, h = 100 W/m². K is maintained over the entire fin surface. The fin is made of Aluminum having thermal conductivity, k=200 W/m-K. Calculate the following: (a) Single fin (a) The fin parameter, m (b) The fin efficiency, Nm (c) Determine the fin heat transfer rate q in (d) The fin effectiveness & (e) The total rate of heat transfer (qmaul) 150 mm 25 x25 fins from an 150 mm by 150 mm section of the surface having number of fins, N-25 x 25 = 625, (f) The single fin resistance (g) The total fin-array resistance R, of part (e). 150 mm- "armay (b) Fin Array .........

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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solve a to c

Square section pin fins with side W= 2 mm and length L = 25 mm are used to enhance heat
transfer from a maintained surface at Tb = 150°C. One end of the fin is attached at x = 0, while the
other end (x = 25 mm) can be considered insulated. Air flowing between over the fins is also at a
temperature, T, = 30°C, and a constant convection coefficient, h = 100 W/m?. K is maintained
over the entire fin surface. The fin is made of Aluminum having thermal conductivity, k=200
W/m-K. Calculate the following:
(a) The fin parameter, m
(b) The fin efficiency, nm
(a) Single fin
.........
(c) Determine the fin heat transfer
rate q in
(d) The fin effectiveness & m
150 mm
25 x25 fins
(e) The total rate of heat transfer ( ql )
from an 150 mm by 150 mm section of the surface
having number of fins, N=25 x 25 = 625,
(f) The single fin resistance
-150 mm-
(g) The total fin-array resistance R, of part (e).
(b) Fin Array
amay
Transcribed Image Text:Square section pin fins with side W= 2 mm and length L = 25 mm are used to enhance heat transfer from a maintained surface at Tb = 150°C. One end of the fin is attached at x = 0, while the other end (x = 25 mm) can be considered insulated. Air flowing between over the fins is also at a temperature, T, = 30°C, and a constant convection coefficient, h = 100 W/m?. K is maintained over the entire fin surface. The fin is made of Aluminum having thermal conductivity, k=200 W/m-K. Calculate the following: (a) The fin parameter, m (b) The fin efficiency, nm (a) Single fin ......... (c) Determine the fin heat transfer rate q in (d) The fin effectiveness & m 150 mm 25 x25 fins (e) The total rate of heat transfer ( ql ) from an 150 mm by 150 mm section of the surface having number of fins, N=25 x 25 = 625, (f) The single fin resistance -150 mm- (g) The total fin-array resistance R, of part (e). (b) Fin Array amay
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