Document ppJYkwMObQvEKNvaVLg6298aD
284
CHAPTER 15
- 1946 Guide
Table 6. BSolar Radiation Transmitted y Single Unshaded Glass for
Variously Oriented-Vertical Surfaces and a Horizontal Surface
For 35 Deg North Latitude on August'/a.b.'c
Sun Time
Solar Altitude
Solas Radiation Transmitted, Btu per (Hour) (Square Foot)
North east
East
South east
South
South west
West :
North' west
; Horizontal
6 A.M. 7 8 9 10 11 12 1 P.M. 2* 3 4, 5 6
10.0
98 .
22.5
.143
34.5
133
46.5
93
58.5
41
68.5
16
73.0
. 16
68.5
16
58.5
16
46.5
. 15
34.5
14
22.5
11-
10.0 . 4 .
109 179 194 173 128
. 59 16 16 16 15 14
u1
4
54 110 140 144 .131
94 45 45 16 - 15 : 14 . 11
4
4 11 . 39 31 50 62 68 62 . 50 31 39 11 4
.
4 11 . 14 . 15 16 .45 45 . 94^ 131 144 140 .110 - 54 .
4 ii 14 15 16 16 16 59 .128 173 194 179 . 109
4 31 :
. 11 : 100 7 14 167 15 22516 270 16 299 16 309 ' 16 : 299 41 270 93 225 .
133 167 143 . 100_
98 31
*The.vaJues of solar radiation are for a relatively dear atmosphere. In heavily industrialized and hazy
atmosphere it may be necessary to reduce values,as much as 10 per cent.
`
i are./or ^Jevel. Approximate correction for altitude can be made by increasing the values
l per cent per thousand feet of altitude.
' --
in,tl!?^bl^5,ay **rused approximately for times of the year other than August 1 by choosing a ^titudediffeiring from the geographical latitude by the difference of declination of the sun
at the desired date and at August 1 (17.5 deg).
Table 7. BSolar Radiation Transmitted y Single Unshaded Glass for
- '.. Variously Oriented Vertical Surfaces and a Horizontal Surface
For Deg North Latitude on August!11- b. c
Sun Time
5 A.M. 6 7 8 ; 9 10 11 12 . . 1 P.M. 2. 3, 4, 5 6 7
Solar Altitude
Solar Radiation Transmitted, Btu per (Hour) (Square Foot)
North- east
East
South east
South
South west
West
North .Hori-' west zontal
1.5 11.5 23.0 34.5 45.5 56.0 64.5 68.0 4.5 56.0 45.5 34.5 23.0 11.5 1.5
18 : 106
141 122 '76 . 30
16 16 16 . 16' 15 . 14 . 11 .5
1
17 .121 .181 194 170. 125
53', 16 16 16 15 14 . 11 ' .5
1
6. 62 118 147 156 144 110 . 59 .25 ' 16 .15 14 . 11 -5
1
.1 .
1.
.5
5
11 11
19' . 14
42 ' 15
:. 66
: 16
87 25
-'94
' 59 '
, 87 110
66 144
' ' 42
.156
18 147
11 118
' 5 . 62
16
:i
.5 .ii 14 15
,16 .16
16 53 125 170 193 181 121 17
:
: :
1 5 11 . 14 15 16 16 16 16 30 76 122 141 106 18
7 38 `, 102 '
167 220 262 290 . 298290 ' 262 220 167 102
38 7
`The values of solar radiation are fora relatively dear atmosphere, In heavily industrialized and hazy atmosphere it may be necessary to reduce values as much as 10 per cent.
,bVaiues are for sea level. Approximate correction' 1 per cent per thousand feet of altitude.
aniMluc <
%_ h used approximately for times of the year other than August 1 by choosing
aat the desire5d date.and laff5t IA}nuggufrsot ?1 (17.5*dpesgr)a. ph`Cal latitude by the difference of declination of the sun.
Cooling Load
285
Table 8. Solar RADiATio.N/rRANS}iiftEi)_By.Single Unshaded Glass for Variously Oriented Vertical Surfaces and a Horizontal Surface
For 46 Deg North Latitude on. August !^-0
Sun Time
6 7 g 9 10 11 12
2 3 4 5 6 7
Solar Altitude
2.0 12.5 23.0 33:5 44.0 53.0 60.0 63.0 60.0 53.0 44.0 33.5 23.0 12.5 ,.
2.0
Solar Radiation Transmitted, Btu per (Hour) (Square Foot)
North east
.East'
23 23
111 129
135 182
115 190
63 . 168
24 123
16 56
16 16
16 16
16 16'
15 15
14 14
11 ,
11
66
1' 1
South east
South
South west
: West .
- 17
i i
68 6 6
144 11 11
151 24 14
163 55
15
154 88 16
127 113
30
76 , 119
76
.30 . 113 . 127
16 88 154
15 55 163
14 24 151
11 . 11 . 144 :
6 6 68
1 1` 17
1 6 11 14 15 16 16 16 56 123 168 190 182 129 23
North Hori west zontal
in
6 ' 44
11 103 '
14 163
15 .214
16 251
16 277
16 285
16 . 277
24 251
63 214
115 163
. 135
103
111 44
23 11
The values of solar radiation are for a relatively dear atmosphere. In heavily industrialized and hazy atmosphere it may be necessary to reduce values as much as 10 per cent. -
^Values are for sea level. Approximate correction for altitude csin be made by increasing the values
1 per cent per thousand feet of altitude. .
.
Values in the tables may be used approximately.for times of the year other than August 1 by choosing
a table for a latitude differing' from the geographical latitude by the difference of dedination of the sun
at the desired date and at August 1 (17:5 deg). \
7
Table 9. BSolar Radiation.Transmitted y Single Unshaded Glass for
Variously Oriented Vertical Surfaces and a Horizontal Surface .
For 50 Deg North Latitude on August l^b.c. .
Sun Time
Solar Altitude s
Solar Radiation Transmitted, Btu per (Hour) (Square, Foot)
North east
.East
South east
South
South west
West
North west
Hori-
zontal '
5 A.M. 67 8 9 10 11 12 1 P.M. 2' 3 4 5 6 7
4:5
13.5 23.5 33.0 42.0 50.0 56.0 58 56 50 ... 42
33 23.5 13.5
4.5
' 48 ^ ' 48 1 119 139 '
131 183 .
105
190
52 168
19 125
16 58
16 16
16 16
16 : 16
14 14
13 13
11 11
'6
6
'2
2
is: pi ' 2
78 6 127 . . 11 161 '32 173 .71
166 ` 109
144 136! 92 140
41 136
16 109 14 71 13 32 11 11
66 2 '2
'2
6 11. 13 14 16 41 92 144' 166173 161 127 78 18
" 2''' 6 '
2
6
11 11
13 13
14 - 14.
16 16
16 16
16 " 16
58 16
: 125
19
168 52
190 105
183 131
139
119
48' 48
.8
49 '
104
159 204 240 261
- 269
261 240 204
159 104
49 8
,The values of solar radiation are for a relatively clear atmosphere. In heavily industrialized and hazy
atmosphere it may be necessary to reduce values as much as 10 per cent.
^Values are for sea level. Approximate correction for altitude can be made by increasing the values 1 per cent per thousand feet of altitude.
Values in the tables may be used approximately for times of the year other than August ! by choosing a table for a latitude differing from the geographical latitude by the difference of declination of the sun at the desired date and at August 1 (17.5 deg). ' -