Page 12 - BREDI-H-Hinge thermal break system

THERMAL TRANSMITANCE OF Casement Window as per EN ISO 10077-2
SPECIMEN :
Calcula on Type :
Simplified calculation method
(construc on typus: drawing beside)
B

1.2
A A

B
1.2

Data from Autocad Project Data Calcula on Sheeet Data
- Projected widths a , b..h -'Window Dimensions , L, H - U values of Aluminium Sections
- Area of the glass - Glass U value
- Area of the Spandrel Results
- Area of Aluminium Profiles - Mean U value of the frame
- Mean U value of the window

Calculation
H Total window height [m] 1.200
L Total window length [m] 1.200
a Projected Width [m] 0.087 Pannel glazing area (projected) [m²] 0.911
area (projected) [m²] 0.375 thermal transmittance of glass [W/m²K] 1.160
Frame & Sash - window
U f thermal transmittance [W/m²K] 3.770 [W/K] 1.057
Energy Transfer [W/K] 1.415 PSI Visible Glass Perimeter m 5.880
b Projected Width [m] 0.138 Linear Transmitance of the W/m 0.110
glass Edge - as per EN ISO
Y Y Y Y W 0.647
area (projected) [m²] 0.154 10077-1
Central- Window
thermal transmittance [W/m²K] 3.790
U f
Energy Transfer [W/K] 0.582 results [W/K] 3.701
total area of the window [m²] 1.440
mean thermal transmittance of
WINDOW [W/m²K] 2.570
total window
Summary P1 to P2 [W/K] 1.997
Frame Area Af Total Frame Area m² 0.529
Mean U Value of Frame [W/m²K] 3.776

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10 4.4.3 Thermophysical analysis(Uw-window)

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