Advantages of Double Glazed upvc Windows & Doors WEEDOO SA Technical Support by Jason Jorgensen
Advantages of upvc Windows and Doors Heat and Cold insulation Sound insulation Water tightness
Dust proof and air tight High impact resistant and robust Easy maintenance
Burglar Resistant Galvanised Steel Reinforcing encapsulated in the main reinforcing chamber. Multi-Point locking systems on all opening sections All glass used in our sealed units are Toughen Safety glass. Always 2 layers of Toughened glass = double security
Energy Loss with Glass Single Glazing Insulated Double Glazing Specially Coated Glazing
Thermal Conductivity k in accordance to DIN 4108 Thermal Conductivity U-Value in Accordance to DIN 4108 Aluminium 1.428,0 Steel 414,0 Glass 5,8 upvc 1,2 Wood 1,0 0,0 200,0 400,0 600,0 800,0 1.000,0 1.200,0 1.400,0 1.600,0 RATIO NOTE: Aluminium has the highest thermal conductivity
Thermal Transmittance Energy Loss in U-Value W/m2K per hour in accordance to DIN 4108 3 3 U value 2 1 2 Aluminium with single glazing 5.1 5.6 with single glazing, 5,1- Aluminium with double glazing, 3,2 Aluminium with double glazing 3.2-3.8 Aluminium with single glazing, 5,1-5,6 Aluminium with double glazing, 3,2-3,8 upvc with double glazing 1.7 2.1 :- upvc with double glazing, 1,7-2,1 3.0 used as the Default Value upvc with double glazing, 1,7-2,1 0 0,5 1 1,5 2 2,5 3 RATIO NOTE: upvc with double glazing has the lowest U value
Isothermal Representation as per European Standard EN 10077 for Thermal Transmission Coefficient outside: 0 C outside: 0 C inside: 20 C inside: 20 C Frame U f -value: 1.4 W/(m²K) without steel Frame U f -value: 1.8 W/(m²K) with steel Blue line: 10 C, Red line: 13 C
116 101.086 103.158 WEEDOO - SA Thermal Transmission Coefficient Calculation for U w -value (glazed window value): Window Sample With U g = 5.7 Standard Window Size 1.8m x 1.8m Total Area =3.24m² Profile System: SOFTLINE AD 58 U f = 1.8 Single Glazing 6mm U g =5.7 58 Double Glazing Spacer Y g = N/A Therefore the Window U-Value (EN 10077): formula: Uw = formula: Uw = (Uf x Af) + (Ug x Ag) + (Ῠg x lg) (Af + Ag) (3.24 x 0.72) + (5.70 x 2.57) + (0.00 x 12.52) (0.72 + 2.57) = W / m² K = 5.16 U w = 5.16 W/(m²K)
101.08 6 123.5 103.196 WEEDOO - SA Thermal Transmission Coefficient Calculation for U w -value (glazed window value): Window Sample With U g = 2.7 Sandard Window Size 1.8m x 1.8m Area =3.24m² Profile System: SOFTLINE AD 58 U f = 1.8 Double Glazing 4mm-16mm (air gap)-4mm U g =2.7 58 Double Glazing Spacer Y g =0.06 ENERGY SAVING 47% more energy saved by using double glazing Therefore the Window U-Value (EN 10077): formula: Uw = formula: Uw = (Uf x Af) + (Ug x Ag) + (Ῠg x lg) (Af + Ag) (1.80 x 0.61) + (2.70 x 2.50) + (0.06 x 12.52) (0.61 + 2.50) = W / m² K = 2.75 U w = 3.0 W/(m²K) Default Setting
1. Outward Opening Casement with Single Glazing Heat Transmission Outside 30 C / Inside 20 C Outside 35 C / Inside 20 C Outside 40 C / Inside 20 C Surface temp.: 27.4 C Surface temp.: 31.1 C Surface temp.: 34.8 C Glazing: U g -Value = 5.7 W/(m²K)
2. Outeard Opening Casement Window with Double Glazing Heat Transmission Outside 30 C / Inside 20 C Outside 35 C / Inside 20 C Outside 40 C / Inside 20 C Surface temp.: 23.6 C Surface temp.: 25.4 C Surface temp.: 27.2 C Glazing: U g -Value = 3.0 W/(m²K), no layer - Default Value
2200 mm 3000 mm WEEDOO - SA ENERGY SAVING Total window area 3000 x 2200 = 6.6 m 2 Glass area 5.4 m 2 Frame area 1.2 m 2 U-value single glazing 5.8 W / m 2 K U-value double glazing 3.0 W / m 2 K 5.8 3.0 = 2.8 W / m 2 K U-value aluminium profile 7.5 W / m 2 K U-value upvc profile 1.7 W / m 2 K 7.5 1.7 = 5.8 W / m 2 K Temperature difference between inside and outside = 20 K Average air conditioner running time in summer = 8.5 hours/ day ( 2.8W x 5.4m 2 + 5.8W x 1.2 m 2 ) x 20 K x 8.5 hours = 3.754 KW Saving / Day
55 96 101.097 67 103.214 WEEDOO - SA Profile System: Overview: Casement Windows & Shutters Sliding Windows & Shutters Tilt & Turn Windows 13 Single Doors & French Doors & Shutters 58 Slinding Doors & Shutters
System Features Profile width: 58 mm * 3 chamber frame and sash profiles with galvanised steel reinforcement * 2 sealing levels (inside + outside) * U f -value: 3.0 W/m²K * Wide range of profiles
Frame & Sash Combinations: 55mm and 67mm frames with recessed sashes 76 76mm frame with half flush sash 82.5 82mm frame with flush sash 132.5
South Africa needs double glazed upvc Windows & Doors for all their inherent advantages. SANS 204 WEEDOO-SA, is a reliable partner for high quality extrusions for upvc Windows & Doors. You as our partners, and we as your technical associates, can make it happen.