CLTDs for glass
From ASHRAE (1989), with permission
Solar time |
CLTD, |
Solar time |
CLTD, |
1 |
1 |
13 |
12 |
2 |
0 |
14 |
13 |
3 |
-1 |
15 |
14 |
4 |
-2 |
16 |
14 |
5 |
-2 |
17 |
13 |
6 |
-2 |
18 |
12 |
7 |
-2 |
19 |
10 |
8 |
0 |
20 |
8 |
9 |
2 |
21 |
6 |
10 |
4 |
22 |
4 |
11 |
7 |
23 |
3 |
12 |
9 |
24 |
2 |
Corrections: The values in the table were calculated for an inside temperature of 78°F and an outdoor maximum temperature of 95°F with an outdoor daily range of 21°F. The table remains approximately correct for other outdoor maximums of 93°F to 102°F and other outdoor daily ranges of 16°F to 32°F, provided the outdoor daily average temperature remains approximately 85°F. If the room air temperature is different from 78°F and/or the outdoor daily average temperature is different from 85°F, the following rules apply: