Thermal properties of window frame Type 1 Sheet: 1 Type: Side, top and bottom profile Profile: Frame profile made of wood and a GRP profile mounted with a sealed triple glazing unit. Materials: Wood GRP EPDM λ = 0.13 W/mK λ = 0.30 W/mK λ = 0.25 W/mK Sealed triple glazing (4-10-4-14-4) Argon filling h w Dimension [w h] Thermal transmittance of frame Edge construction: Thermal conductivity, 10 mm Thermal conductivity, 1 Bottom 3 mm ψ-value 119 mm 59 mm U f = 1.426 W/m 2 K λ 10 = 0.21 W/mK λ 14 = 0.42 W/mK λ b = 0.40 W/mK 0.046 W/mK Calculations performed in accordance with pren 10077-2.
Thermal properties of complete window Type 1 Sheet: 2 Type: Whole window Window consists of: Side, Top and Bottom profile Sheet 1 Assumptions: Projected window area 1230 1480 mm Sealed triple glazing (4-10-4-14-4) Argon filling Side, Top and Bottom profile: Ψ-value U f = 1.426 W/m²K Ψ = 0.046 W/mK h f =59 mm U = 0.80 W/m²K Light transmittance τ = 0.43 Net energy gain E ref = 12.6 kwh/m² Calculations performed in accordance with ISO/DIS 15099.
Window performance when used in an office Type 1 Sheet: 3 Type: Section of two offices. Side walls, roof and floor are all adiabatic surfaces. Construction with high thermal mass (260000 J/m 2 K). Internal gains: 10 W/m 2. Mechanical balanced ventilation. Ventilation rate: 1.6 times per hour Heat recovery efficiency: 85 % Seasonal Calculation Whole section (STEP 2) Cooling demand 7 kwh/m 2 internal floor area 0 kwh/m 2 internal floor area Hourly Calculation Whole section (STEP3) 26 hours >26 o C Hourly Calculation Office 1 (STEP3) 1.5 kwh/m 2 internal floor area 28 hours >26 o C Hourly Calculation Office 2 (STEP3) 23 hours >26 o C 5 hours >27 o C Calculations performed in WinDesign in accordance with EN ISO 13790.
Thermal properties of window frame Type 2 Sheet: 4 Type: Side, top and bottom profile Profile: Frame profile made of wood and GRP mounted with a sealed triple glazing unit. Materials: Wood GRP EPDM λ = 0.13 W/mK λ = 0.30 W/mK λ = 0.25 W/mK Sealed triple glazing (4-10-4-14-4) Argon filling h Dimension [w h] Thermal transmittance of frame 119 mm 59 mm U f = 1.426 W/m 2 K w Calculations performed in accordance with pren 10077-2.
Thermal properties of complete window Type 2 Sheet: 5 Type: Whole window Window consists of: Side, Top and Bottom profile Sheet 1 Assumptions: Projected window area 1230 x 1480 mm Sealed triple glazing (4-10-4-14-4) Argon filling Side, Top and Bottom profile: Ψ-value U f = 1.426 W/m²K Ψ = 0.046 W/mK h f =59 mm U = 0.80 W/m²K Light transmittance τ = 0.43 Net energy gain E ref = 3.75 kwh/m² Calculations performed in accordance with ISO/DIS 15099.
Window performance when used in an office Type 2 Sheet: 6 Type: Section of two offices. Side walls, roof and floor are all adiabatic surfaces. Construction with high thermal mass (260000 J/m 2 K). Internal gains: 10 W/m 2. Mechanical balanced ventilation. Ventilation rate: 1.6 times per hour Heat recovery efficiency: 85 % Seasonal Calculation Whole section (STEP 2) Cooling demand 7 kwh/m 2 internal floor area 0 kwh/m 2 internal floor area Hourly Calculation Whole section (STEP3) 25 hours >26 o C Hourly Calculation Office 1 (STEP3) 1.5 kwh/m 2 internal floor area 28 hours >26 o C Hourly Calculation Office 2 (STEP3) 22 hours >26 o C 5 hours >27 o C Calculations performed in WinDesign in accordance with EN ISO 13790.