Thermal transmittance calculation
Product
Type of window
Frame material
Single tilt and turn window
NATURE OPTIMO XLT 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 = 0,78 W/m2K, bf = 116 mm Uf,sp = 0,87 W/m2K, bf = 143 mm
Thermal transmittance of a glazing
Ug = 0,7 W/m2K, (6/14Ar/6/16Ar/6)
Specific thermal transmittance of a spacer
Ψ = 0,023 W/mK, Super 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 = 0,79 W/m2K
M SORA, 1.5.2014
Calculations made by:
dr. Aleš Ugovšek