WINDOW 5
NFRC / ISO15099 Updates
Last update:04/04/03 11:52 AM
Algorithm Changes from WINDOW4.1 to WINDOW5:
The following lists some of the specific changes from WINDOW 4.1 to WINDOW 5 due to the NFRC / ISO15099 algorithm updates.
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ENVIRONMENTAL CONDITIONS CHANGES |
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| WINDOW 5 | WINDOW 4.1 | |||
| SI (oC) | IP (oF) | SI (oC) | IP (oF) | |
| Interior Temperature U-factor | 21.0 | 69.8 | 21.1 | 70.0 |
| Exterior Temperature U-factor | -18.0 | 0 | -17.8 | 0.0 |
| Interior Temperature SHGC | 24.0 | 75.2 | 23.9 | 75.0 |
| Exterior Temperature SHGC | 32.0 | 89.6 | 31.7 | 89.0 |