CLTDs for sunlighted walls for north latitudes
From ASHRAE (1989), with permission
Values shown for Group E walls
Wall facing |
Solar time, h |
Hour of Max. CLTD |
Min. CLTD |
Max. CLTD |
Max. - Min. CLTD |
|||||||||||||||||||||||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
|||||
N |
12 |
10 |
8 |
7 |
5 |
4 |
3 |
4 |
5 |
6 |
7 |
9 |
11 |
13 |
15 |
17 |
19 |
20 |
21 |
23 |
20 |
18 |
16 |
14 |
20 |
3 |
22 |
19 |
NE |
13 |
11 |
9 |
7 |
6 |
4 |
5 |
9 |
15 |
20 |
24 |
25 |
25 |
26 |
26 |
26 |
26 |
26 |
25 |
24 |
22 |
19 |
17 |
15 |
16 |
4 |
26 |
22 |
E |
14 |
12 |
10 |
8 |
6 |
5 |
6 |
11 |
18 |
26 |
33 |
36 |
38 |
37 |
36 |
34 |
33 |
32 |
30 |
28 |
25 |
22 |
20 |
17 |
13 |
5 |
38 |
33 |
SE |
15 |
12 |
10 |
8 |
7 |
5 |
5 |
8 |
12 |
19 |
25 |
31 |
35 |
37 |
37 |
36 |
34 |
33 |
31 |
28 |
26 |
23 |
20 |
17 |
15 |
5 |
37 |
32 |
S |
15 |
12 |
10 |
8 |
7 |
5 |
4 |
3 |
4 |
5 |
9 |
13 |
19 |
24 |
29 |
32 |
34 |
33 |
31 |
29 |
26 |
23 |
20 |
17 |
17 |
3 |
34 |
31 |
SW |
22 |
18 |
15 |
12 |
10 |
8 |
6 |
5 |
5 |
6 |
7 |
9 |
12 |
18 |
24 |
32 |
38 |
43 |
45 |
44 |
40 |
35 |
30 |
26 |
19 |
5 |
45 |
40 |
W |
25 |
21 |
17 |
14 |
11 |
9 |
7 |
6 |
6 |
6 |
7 |
9 |
11 |
14 |
20 |
27 |
36 |
43 |
49 |
49 |
45 |
40 |
34 |
29 |
20 |
6 |
49 |
43 |
NW |
20 |
17 |
14 |
11 |
9 |
7 |
6 |
5 |
5 |
5 |
6 |
8 |
10 |
13 |
16 |
20 |
26 |
32 |
37 |
38 |
36 |
32 |
28 |
24 |
20 |
5 |
38 |
33 |