Fenestration Performance: 7
ASHRAE Chapter 15 fenestration U-factors (W/m²·K) for windows, skylights, curtain walls, and doors by glazing configuration and frame type. Covers single through quadruple glazing with air, argon, and krypton fill, low-e coatings at various emissivities, and all major frame materials. Source: ASHRAE Handbook Fundamentals 2021 Tables 4 and 6.
| glazing id | frame type | gap fill | gap mm (mm) | glazing category | glazing type | num panes (dimensionless) | u factor Wm2K (W/(m2·K)) |
|---|---|---|---|---|---|---|---|
| 7 | curtainwall_alum_no_break | argon | 13 | Double Glazing | 13 mm argon space | 2 | 3.89 |
| 7 | curtainwall_alum_thermal_break | argon | 13 | Double Glazing | 13 mm argon space | 2 | 3.3 |
| 7 | curtainwall_structural_glazing | argon | 13 | Double Glazing | 13 mm argon space | 2 | 3.07 |
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