[2] Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k = 0.78 W/m °C) separated by a 12-mm-wide stagnant air space (k = 0.026 W/m- °C). Determine the steady rate of heat transfer through this double-pane window and the temperature of its inner surface for a day during which the room is maintained at 24°C while the temperature of the outdoors is -5°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the window to be h1 = 10 W/m?.°C and h2 = 25 W/m?.°C, and disregard any heat transfer by radiation. Glass 3. 12 3 mm Frame a.) Steady rate of heat transfer. А. 318 W B. 214 W C. 114 W D. 321 W b.) Temperature of its inner surface. А. 25°С B. 17.5°C C. 15°C D. 19.2°C
[2] Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k = 0.78 W/m °C) separated by a 12-mm-wide stagnant air space (k = 0.026 W/m- °C). Determine the steady rate of heat transfer through this double-pane window and the temperature of its inner surface for a day during which the room is maintained at 24°C while the temperature of the outdoors is -5°C. Take the convection heat transfer coefficients on the inner and outer surfaces of the window to be h1 = 10 W/m?.°C and h2 = 25 W/m?.°C, and disregard any heat transfer by radiation. Glass 3. 12 3 mm Frame a.) Steady rate of heat transfer. А. 318 W B. 214 W C. 114 W D. 321 W b.) Temperature of its inner surface. А. 25°С B. 17.5°C C. 15°C D. 19.2°C
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
Related questions
Question
![[2] Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k = 0.78
W/m °C) separated by a 12-mm-wide stagnant air space (k = 0.026 W/m- °C). Determine the steady rate of heat transfer
through this double-pane window and the temperature of its inner surface for a day during which the room is maintained
at 24°C while the temperature of the outdoors is -5°C. Take the convection heat transfer coefficients on the inner and
outer surfaces of the window to be h1 = 10 W/m2.°C and h2 = 25 W/m2.°C, and disregard any heat transfer by radiation.
Glass
3
12 3 mm
Frame
a.) Steady rate of heat transfer.
А. 318 W
B. 214 W
C. 114 W
D. 321 W
b.) Temperature of its inner surface.
A. 25°C
B. 17.5°C
С. 15°С
D. 19.2°C](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7d9a1f96-3005-4e5f-bac4-a8efffbb5958%2F3a3d4c17-f629-4f8b-8e41-0cfc73553df3%2F5znid1o_processed.png&w=3840&q=75)
Transcribed Image Text:[2] Consider a 1.2-m-high and 2-m-wide double-pane window consisting of two 3-mm-thick layers of glass (k = 0.78
W/m °C) separated by a 12-mm-wide stagnant air space (k = 0.026 W/m- °C). Determine the steady rate of heat transfer
through this double-pane window and the temperature of its inner surface for a day during which the room is maintained
at 24°C while the temperature of the outdoors is -5°C. Take the convection heat transfer coefficients on the inner and
outer surfaces of the window to be h1 = 10 W/m2.°C and h2 = 25 W/m2.°C, and disregard any heat transfer by radiation.
Glass
3
12 3 mm
Frame
a.) Steady rate of heat transfer.
А. 318 W
B. 214 W
C. 114 W
D. 321 W
b.) Temperature of its inner surface.
A. 25°C
B. 17.5°C
С. 15°С
D. 19.2°C
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