The heat transfer coefficienthspace for the air space trapped between the two vertical paral lel glass layers for 13-mm- and 6-mm-thick air spaces (from Building Materials and Structures, Report 151, U.S. Dept. of Commerce) (a) Air space thickness = 13 mm (b) Air space thickness=6 mm hcer. W/m2 . "C° hpce W/m2 . "C* Eftective TagAT C "C Eattective T AT C "C 0.72 0.4 0.2 0.1 0.72 0.4 0.2 0.1 5 5.3 5.3 5.5 3.8 2.9 2.4 3.8 2.9 24 4.0 3.1 2.6 5 50 7.2 5.7 4.8 4.3 0 15 0 30 7.2 5.7 4.8 4.3 10 10 50 5 7.7 6.0 5.0 4.5 10 10 15 10 30 5.7 5.7 6.0 4.1 3.0 2.5 4.1 4.3 3.3 2.7 7.7 6.1 5.0 4.5 3.1 2.5 30 5 30 50 8.8 6.8 5.5 49 6.8 5.5 4.9 8.8 30 30 15 30 30 5 5.7 5.7 6.0 4.6 3.4 2.7 4.7 3.4 2.8 4.9 3.6 3.0 50 50 50 10.O 7.5 6.0 5.2 5 10.0 7.5 6.0 5.2 Multiply by O.176 to convert to Btuh ft"F

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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The heat transfer coefficienthspace for the air space trapped between the
two vertical paral lel glass layers for 13-mm- and 6-mm-thick air spaces
(from Building Materials and Structures, Report 151, U.S. Dept. of
Commerce)
(a) Air space thickness = 13 mm
(b) Air space thickness=6 mm
hcer. W/m2 . "C°
hpce W/m2 . "C*
Eftective
TagAT
C
"C
Eattective
T AT
C
"C
0.72
0.4 0.2 0.1
0.72 0.4 0.2 0.1
5
5.3
5.3
5.5
3.8 2.9 2.4
3.8 2.9 24
4.0 3.1 2.6
5
50
7.2 5.7 4.8 4.3
0 15
0 30
7.2
5.7 4.8 4.3
10
10 50
5
7.7
6.0
5.0 4.5
10
10 15
10 30
5.7
5.7
6.0
4.1 3.0 2.5
4.1
4.3 3.3 2.7
7.7
6.1 5.0 4.5
3.1 2.5
30
5
30
50
8.8
6.8 5.5 49
6.8 5.5 4.9
8.8
30
30 15
30 30
5
5.7
5.7
6.0
4.6 3.4 2.7
4.7 3.4 2.8
4.9 3.6 3.0
50
50 50 10.O 7.5 6.0 5.2
5
10.0 7.5 6.0 5.2
Multiply by O.176 to convert to Btuh ft"F
Transcribed Image Text:The heat transfer coefficienthspace for the air space trapped between the two vertical paral lel glass layers for 13-mm- and 6-mm-thick air spaces (from Building Materials and Structures, Report 151, U.S. Dept. of Commerce) (a) Air space thickness = 13 mm (b) Air space thickness=6 mm hcer. W/m2 . "C° hpce W/m2 . "C* Eftective TagAT C "C Eattective T AT C "C 0.72 0.4 0.2 0.1 0.72 0.4 0.2 0.1 5 5.3 5.3 5.5 3.8 2.9 2.4 3.8 2.9 24 4.0 3.1 2.6 5 50 7.2 5.7 4.8 4.3 0 15 0 30 7.2 5.7 4.8 4.3 10 10 50 5 7.7 6.0 5.0 4.5 10 10 15 10 30 5.7 5.7 6.0 4.1 3.0 2.5 4.1 4.3 3.3 2.7 7.7 6.1 5.0 4.5 3.1 2.5 30 5 30 50 8.8 6.8 5.5 49 6.8 5.5 4.9 8.8 30 30 15 30 30 5 5.7 5.7 6.0 4.6 3.4 2.7 4.7 3.4 2.8 4.9 3.6 3.0 50 50 50 10.O 7.5 6.0 5.2 5 10.0 7.5 6.0 5.2 Multiply by O.176 to convert to Btuh ft"F
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