construction technology · 2015-05-13 · • advantages of double glazed upvc windows & doors...
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WEEDOO - SA CONSTRUCTION TECHNOLOGY
www.weedoo-sa.co.za
• 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
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Dust proof
and air tight
High impact
resistant and
robust
Easy
maintenance
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Burglar Resistant
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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
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Energy Loss with Glass
Single Glazing
Insulated Double Glazing
Specially Coated Glazing
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www.weedoo-sa.co.za Thermal Conductivity U-Value in Accordance to DIN 4108
1,0
1,2
5,8
414,0
1.428,0
0,0 200,0 400,0 600,0 800,0 1.000,0 1.200,0 1.400,0 1.600,0
RATIO
Wood
uPVC
Glass
Steel
Aluminium
Thermal Conductivity k in accordance to DIN 4108
NOTE: Aluminium has the highest thermal conductivity
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Thermal Transmittance U-Value in accordance to DIN 4108
1
2
3
0 0,5 1 1,5 2 2,5 3
RATIO
Energy Loss in W/m2K per hour
Aluminium with single glazing, 5,1-5,6
Aluminium with double glazing, 3,2-3,8
uPVC with double glazing, 1,7-2,1
1
2
3
0 0,5 1 1,5 2 2,5 3
RATIO
Energy Loss in W/m2K per hour
Aluminium with single glazing, 5,1-5,6
Aluminium with double glazing, 3,2-3,8
uPVC with double glazing, 1,7-2,1
U value
Aluminium with single glazing 5.1 – 5.6
Aluminium with double glazing 3.2 - 3.8
uPVC with double glazing 1.7 – 2.1 :-
3.0 used as the Default Value
NOTE: uPVC with double glazing has the lowest U value
WEEDOO - SA CONSTRUCTION TECHNOLOGY
www.weedoo-sa.co.za Isothermal Representation
as per European Standard EN 10077 for Thermal Transmission Coefficient
inside: 20°C
outside: 0°C outside: 0°C
inside: 20°C
Frame Uf-value: 1.4 W/(m²K)
without steel
Frame Uf-value: 1.8 W/(m²K)
with steel
Blue line: 10°C, Red line: 13°C
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www.weedoo-sa.co.za Thermal Transmission Coefficient Calculation for Uw-value (glazed window value):
Window Sample With Ug= 5.7
10
1.0
86
103
.15
8
58
116
Standard Window Size 1.8m x 1.8m Total Area =3.24m²
Profile System: SOFTLINE AD 58 Uf = 1.8
Single Glazing 6mm Ug=5.7
Double Glazing Spacer Yg = N/A
formula: Uw = (Uf x Af) + (Ug x Ag) + (Ῠg x lg)
= W / m² K (Af + Ag)
formula: Uw = (3.24 x 0.72) + (5.70 x 2.57) + (0.00 x 12.52)
= 5.16 (0.72 + 2.57)
Therefore the Window U-Value (EN 10077):
Uw = 5.16 W/(m²K)
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www.weedoo-sa.co.za Thermal Transmission Coefficient Calculation for Uw-value (glazed window value):
Window Sample With Ug= 2.7
101.
08
6
103
.19
6
123
.5
58
Sandard Window Size 1.8m x 1.8m Area =3.24m²
Profile System: SOFTLINE AD 58 Uf = 1.8
Double Glazing 4mm-16mm (air gap)-4mm Ug=2.7
Double Glazing Spacer Yg =0.06
formula: Uw = (Uf x Af) + (Ug x Ag) + (Ῠg x lg)
= W / m² K (Af + Ag)
formula: Uw = (1.80 x 0.61) + (2.70 x 2.50) + (0.06 x 12.52)
= 2.75 (0.61 + 2.50)
ENERGY SAVING
47% more energy saved by using double glazing
Therefore the Window U-Value (EN 10077):
Uw = 3.0 W/(m²K)
Default Setting
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www.weedoo-sa.co.za 1. Outward Opening Casement with Single Glazing – Heat Transmission
Surface temp.:
27.4°C Surface temp.:
31.1°C Surface temp.:
34.8°C
Outside 30°C / Inside 20°C Outside 35°C / Inside 20°C
Glazing: Ug-Value = 5.7 W/(m²K)
Outside 40°C / Inside 20°C
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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: Ug-Value = 3.0 W/(m²K), no layer - Default Value
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ENERGY SAVING
3000 mm
22
00
mm
Total window area 3000 x 2200 = 6.6 m2
Glass area 5.4 m2
Frame area 1.2 m2
U-value single glazing 5.8 W / m2 K
U-value double glazing 3.0 W / m2 K
5.8 – 3.0 = 2.8 W / m2 K
U-value aluminium profile 7.5 W / m2 K
U-value uPVC profile 1.7 W / m2 K
7.5 – 1.7 = 5.8 W / m2 K
Temperature difference between inside and
outside = 20°K
Average air conditioner running time in summer
= 8.5 hours/ day
( 2.8W x 5.4m2 + 5.8W x 1.2 m2 ) x 20°K x 8.5 hours = 3.754 KW Saving / Day
WEEDOO - SA CONSTRUCTION TECHNOLOGY
www.weedoo-sa.co.za 10
1.0
97
10
3.2
14
96
55
67
13
58
Profile System:
Overview:
Casement Windows & Shutters Sliding Windows & Shutters Tilt & Turn Windows Single Doors & French Doors & Shutters Slinding Doors & Shutters
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System Features
Profile width: 58 mm
* 3 chamber frame and sash profiles with galvanised steel reinforcement
* 2 sealing levels (inside + outside)
* Uf-value: 3.0 W/m²K
* Wide range of profiles
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76
82.5
132.5
55mm and 67mm
frames with recessed
sashes
76mm frame with half
flush sash
82mm frame with flush
sash
Frame & Sash Combinations:
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WEEDOO - SA CONSTRUCTION TECHNOLOGY
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WEEDOO - SA CONSTRUCTION TECHNOLOGY
www.weedoo-sa.co.za
WEEDOO - SA CONSTRUCTION TECHNOLOGY
www.weedoo-sa.co.za
WEEDOO - SA CONSTRUCTION TECHNOLOGY
www.weedoo-sa.co.za
WEEDOO - SA CONSTRUCTION TECHNOLOGY
www.weedoo-sa.co.za
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.
WEEDOO - SA CONSTRUCTION TECHNOLOGY
www.weedoo-sa.co.za
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