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HEATING VENTILATING AIR CONDITIONING CUIDE 1941
Table 2. Solar Radiation (Direct plus Sky) Impinging Against Walls Having Several Orientations and a Horizontal Surface
For SO Deg North Latitude on August 1
Sun Time
Northeast
Intensity op Solar Radiation, Btu per Sq Ft per Hour
East
Southeast South
Southwest West
Northwest
Horizontal Surface
5:20 6:00 7:00
8:00 9:00 10:00
11:00 12:00
1:00
200 3:00 400
5:00 6:00 6:40
0 37 119
153 130
86
35 26 25.5
23.5 21 17
11 4.5 0
0 47 145
207 194 152
94 26 25.5
23.5 21 17
11 4.5 0
00 23 4.5 91 11
149 17 158 35 143 63
85 . 80
65 85
25.5
80
23.5 21 17
63 35 17
11 4.5 0
11 4.5 0
0 4.5 11
17 21 23.5
25.5 65 85
143 158 149
91 23
0
0 4.5 11
17 21 23.5
25.5 26 94
152 194 207
145 47 0
0 4.5 11
17 21 23.5
25.5 26 35
86 130 153
119 37 0
0 11 64
147 213 262
290 300 290
262 213 147
64 11 0
Table 3. Solar Radiation (Direct plus Sky) Impinging Against Walls Having Several Orientations and a Horizontal Surface
For 35 Deg North Latitude on August 1 ^
Time
Northeast
Intensity of Solar Radiation, Btu per Sq Ft per Hour
East - Southeast
South
Southwest West
Northwest
Horizontal Surface
5:07 6:00 7:00
8:00 9:00 10:00
11:00 12:00
1:00
2:00 3:00 4:00
5:00 6:00 6:53
0 43 121
147 120
71
28 26 25.5
23.5 21 17
11 4.5 0
0 49. 151
207 194 152
94 26 25.5
23.5 21 17
11 4.5 0
0 27 97
155 169 156
129 84 25.5
23.5 21 17
11 4.5 0
0 4.5 11
25 .49 83
103 109 103
83 49 25
11 4.5 0
0 4.5 11
17 21 23.5
25.5 84 129
156 169 155
97 27
0
0 4.5 11
17 21 23.5
25.5 26 94
152 194 207
151 49 0
0 4.5 11
0 13 72
17 21 23.5
. 151 213 .
. 245
25.5 288 26 298 28 288
71 245 120 213 147 151
121 72 43 13 00
128
CHAPTER 6. COOLING LOAD
. Table
Solar Radiation (Direct plus Sky) Impinging Against Walls Having Several Orientations and a Horizontal Surface
For Ifl Deg North Latitude on August 1________________________
Su>' Time
Northeast
Intensity of Solar Radiation, Btu pes Sq Ft per Hour
East
Southeast
South
Southwest West
Northwest
Horizont Surface
4:50
6.00
S'OO 900
12:00 i no 2;00 3:00
4-00 5:00 6:00
700 7:10
0 5 49
123 137 102
54 28 26
25.5 23.5 21
17 11
4.5
2.5 0
0 6 56
162 211 195
152 94 26
25.5 23.5 21
17 11
4.5
2.5 0
0 4 32
109 166 181
171 144
98
41 23.5 21
17 11
4.5
2.5 0
0 2.5 4.5
11 29 74
103 124 128
124 103
74
29 11 4.5
2.5 0
0 2.5 4.5
11 17 21
23.5 41 98
144 171 181
166 109
32
4 0
0 2.5 4.5
11 17 21
23.5 25.5 26
94 152 195
211 162
56
6 0
0 2.5 4.5
11 17 21
23.5 25.5 26
28 54 102
137 123
49
5 0
0 5 20
85 160 212
244 281 290
281 244 212
160 85 20
5 0
Table 5.
Solar Radiation (Direct plus Sky) Impinging Against Walls Having Several Orientations and a Horizontal Surface
For 45 Deg North Latitude on August 1
Sun Time
Northeast
Intensity of Solar Radiation; Btu per Sq Ft per Hour
East
Southeast South Southwest West
Northwest
Horizontal Surface
4:25 5:00 600
700 800 900
10:00 11:00 12:00
1:00 2:00 3:00
400 5:00 600
7:00 7:35
0 22 . 87
151 144 100
46 28 26
25.5 23.5 21
17 12
5.5
3.5 0
0 20 99
192 237 199
153 94 26
25.5 23.5 21
17 12
5.5
3.5 0
0 17 56
134 188 197
184 158 116
63 23.5 21
17 12
5.5
- 3.5 0
0 3.5 5.5
12 48 93
121 146 156
146 121
93
48 12
5.5
3.5 0
0 3.5 5.5
12 17 21
23.5 63 116
158 184 197
188 134
56
17 0
0 3.5 5.5
12 17 21
23.5 25.5 26
94 153 199
237 192
99
20 0
0 3.5 5.5
12 17 21
23.5 25.5 26
28 .46 100
144 151
87
22 0
0 9 27
89 156 205
243 259 281
259 243 205
156 89 27
9 0
129