U-factors of ACRYLITE®
The U-factor, or overall heat transmission coefficient, is the amount of heat which will pass through one square foot of a specific thickness of material per hour. U factors depend on specific conditions and differ for summer and winter.
|Vertical Installation||Horizontal Installation|
|3.0 mm (1/8”)||0.98||1.06||0.79||1.15|
|4.5 mm (3/16”)||0.94||1.02||0.76||1.09|
|6.0 mm (1/4”)||0.90||0.97||0.74||1.04|
|9.5 mm (3/8”)||0.83||0.89||0.69||0.95|
|12.0 mm (1/2”)||0.76||0.81||0.65||0.87|
|24.0 mm (1”)||0.59||0.62||0.53||0.66|
|31.8 mm (1.25”)||0.53||0.55||0.47||0.57|
|50.8 mm (2.00”)||0.40||0.42||0.37||0.43|
Total Heat Loss or Gain through a Window Due to Conduction/Convection
Heat Loss (Btu/hr) = Window Area (sq. ft.) x [Indoor Temp(°F) - Outdoor Temp(°F)] x U-Factor
For glazing applications, there are some things that should be taken into consideration when designing the framework: thermal contraction and expansion, moisture expansion and contraction, and foreshortening due to deflection under load.