A hot isothermal surface is to be cooled by attaching an array of parallel, equally spaced vertical square plates, side length =399 mm, AT between hot surface and surrounding air is 81°C and the film temp = 50 °C, Air properties (k = 0.02735 W/m.K, a =2.487E-5 m¯/s, v=1.798E-5 m /s, Pr = 0.7228). What is the plate spacing (mm) that maximizes heat transfer from the array? %3D %3D %3D Select bne: О А.8.73 B. 7.92 О с. 7.00 O D. 10.29 O E. 9.57

A hot isothermal surface is to be cooled by attaching an array of parallel, equally spaced vertical square plates, side length =399 mm, AT between hot surface and surrounding air is 81°C and the film temp = 50 °C, Air properties (k = 0.02735 W/m.K, a =2.487E-5 m¯/s, v=1.798E-5 m /s, Pr = 0.7228). What is the plate spacing (mm) that maximizes heat transfer from the array? %3D %3D %3D Select bne: О А.8.73 B. 7.92 О с. 7.00 O D. 10.29 O E. 9.57

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

A hot isothermal surface is to be cooled by
attaching an array of parallel, equally
spaced vertical square plates, side
length =399 mm, AT between hot surface
and surrounding air is 81°C and the film
temp = 50 °C, Air properties (k = 0.02735
W/m.K, a =2.487E-5 m¯/s, v=1.798E-5 m /s,
Pr = 0.7228). What is the plate spacing
(mm) that maximizes heat transfer from
the array?
%3D
Select one:
О А.8.73
B. 7.92
С. 7.00
D. 10.29
E. 9.57
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