CLTDs for sunlighted walls for north latitudes
From ASHRAE (1989), with permission
Values shown for Group F 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 |
8 |
6 |
5 |
3 |
2 |
1 |
2 |
4 |
6 |
7 |
9 |
11 |
14 |
17 |
19 |
21 |
22 |
23 |
24 |
23 |
20 |
16 |
13 |
11 |
19 |
1 |
23 |
23 |
NE |
9 |
7 |
5 |
3 |
2 |
1 |
5 |
14 |
23 |
28 |
30 |
29 |
28 |
27 |
27 |
27 |
27 |
26 |
24 |
22 |
19 |
16 |
13 |
11 |
11 |
1 |
30 |
29 |
E |
10 |
7 |
6 |
4 |
3 |
2 |
6 |
17 |
28 |
38 |
44 |
45 |
43 |
39 |
36 |
34 |
32 |
30 |
27 |
24 |
21 |
17 |
15 |
12 |
12 |
2 |
45 |
43 |
SE |
10 |
7 |
6 |
4 |
3 |
2 |
4 |
10 |
19 |
28 |
36 |
41 |
43 |
42 |
39 |
36 |
34 |
31 |
28 |
25 |
21 |
18 |
15 |
12 |
13 |
2 |
43 |
41 |
S |
10 |
8 |
6 |
4 |
3 |
2 |
1 |
1 |
3 |
7 |
13 |
20 |
27 |
34 |
38 |
39 |
38 |
35 |
31 |
26 |
22 |
18 |
15 |
12 |
16 |
1 |
39 |
38 |
SW |
15 |
11 |
9 |
6 |
5 |
3 |
2 |
2 |
4 |
5 |
8 |
11 |
17 |
26 |
35 |
44 |
50 |
53 |
52 |
45 |
37 |
28 |
23 |
18 |
18 |
2 |
53 |
48 |
W |
17 |
13 |
10 |
7 |
5 |
4 |
3 |
3 |
4 |
6 |
8 |
11 |
14 |
20 |
28 |
39 |
49 |
57 |
60 |
54 |
43 |
34 |
27 |
21 |
19 |
3 |
60 |
57 |
NW |
14 |
10 |
8 |
6 |
4 |
3 |
2 |
2 |
3 |
5 |
8 |
10 |
13 |
15 |
21 |
27 |
35 |
42 |
46 |
43 |
35 |
28 |
22 |
18 |
19 |
2 |
46 |
44 |