Thermal transmittance calculation
Product
Type of window
Frame material
Single tilt and turn window
COMFORT OPTIMO XL Wood – spruce (Picea abies (L.) Karst)
Basis: EN 14351-1:2006 Calculation norm: EN 10077-2:2012 (Calculation of thermal transmittance – Numerical method for frames) Detail used in calculation:
Thermal transmittance of a frame
Uf = 0,98 W/m K, bf = 104 mm
Thermal transmittance of a glazing
Ug = 0,5 W/m2K, (4/18Ar/4/18Ar/4)
2
Specific thermal transmittance of a spacer
Ψ = 0,035 W/mK, TGI spacer
Window dimension (w x h)
1230 mm × 1480 mm
Validity: The data and results refer solely to the described specimen or to the specimen of bigger dimension but with the same frame and glazing details.
Window thermal transmittance:
Uw = 0,73 W/m2K
M SORA, 1.5.2014
Calculations made by:
dr. Aleš Ugovšek