Heat Transfer An electronic equipment is cooled by using 7 rectangular fins as seen in the figure. Details of thesystem are given below. Calculate the effectiveness of the finned system.Note: Fin efficiency should be calculated with an appropriate equation. Do not use graphicalmethod. (Kanat verimini uygun denklem ile hesaplayınız, grafik kullanarak belirlemeyiniz)Properties of electronic equipment and the environment:Number of fins N-7b=79 mm, w-100 mmBase temperature T3-71°CTox=25, h=52 W/(m2°C]Properties of fin material:k=200 W/(m°C), L-17 mm, w=100 mm, t-1.5 mm2(Thickness)Ta, h-k (Thermal conductivityof fin material)(Width) wL (Length)N=7 (number of fins)

Answered: An electronic equipment is cooled by…

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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Question

Heat Transfer

An electronic equipment is cooled by using 7 rectangular fins as seen in the figure. Details of the
system are given below. Calculate the effectiveness of the finned system.
Note: Fin efficiency should be calculated with an appropriate equation. Do not use graphical
method. (Kanat verimini uygun denklem ile hesaplayınız, grafik kullanarak belirlemeyiniz)
Properties of electronic equipment and the environment:
Number of fins N-7
b=79 mm, w-100 mm
Base temperature T3-71°C
Tox=25, h=52 W/(m2°C]
Properties of fin material:
k=200 W/(m°C), L-17 mm, w=100 mm, t-1.5 mm
2(Thickness)
Ta, h
-k (Thermal conductivity
of fin material)
(Width) w
L (Length)
N=7 (number of fins)

Expert Solution

Step 1

given data;

$n u m b e r o f f i n s N = 7 b = 79 m m, w = 100 m m b a s e t e m p e r a t u r e (T_{b}) = 71^{0} C T_{\infty} = 25, h e a t t r a n s f e r c o e f f i c i e n t (h) = 52 w / m^{2}^{0} C t h e r m a l c o n d u c t i v i t y (K) = 200 w / m^{0} c l e n t h (L) = 17 m m t h i c k n e s s (t) = 1.5 m m (a) f i n e f f e c t i v e n e s s (ε) = ? (b) f i n e f f i c i e n c y (η) = ?$

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