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SCHOTT North America |
OKATECHTM - Insulating Glass with Metal Interlayer
In the standard configuration, the U-value can be between 1.0-1.2-1.5 W/m²/K (0.18-0.21-0.27 Btu/hr/rd²/°F), as where in the corresponding two-pane configuration; the wire mesh improves the U-value only slightly.
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The table shows light transmission and total solar energy transmittance values for three-pane configurations, with a coating on surface 4. The values in bold type are measured values, all others are calculated. Light transmission and total solar energy transmittance depend on the angle of incidence.
Min: vertical incidence
Max: 60° angle of incidence.
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Thermal Control Coating |
Solar Control Coating |
| Type |
|
Tv
(%) |
SHGC
(%) |
SC
(%) |
Tv
(%) |
SHGC
(%) |
SC
(%) |
| Louver |
Min
Max |
9
36 |
15
30 |
17
35 |
6
28 |
11
20 |
13
23 |
| Sambesi |
Min
Max |
8
33 |
14
28 |
16
31 |
6
26 |
12
19 |
14
22 |
| Omega |
Min
Max |
21
39 |
20
32 |
23
36 |
17
31 |
15
21 |
17
24 |
Kiwi,
Mandarin |
Min
Max |
22
31 |
22
27 |
26
33 |
17
24 |
14
17 |
16
20 |
Expanded
Metal |
Min
Max |
3
33 |
9
23 |
10
27 |
2
26 |
8
18 |
9
21 |
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U-values refer to European Standard EN 673. Please contact our sales department for values according to ASHRAE conditions.
TSET (total solar energy transmittance or solar heat gain coefficient) and transmission values refer to European Standard EN 410. Values according to ISO 9050 may differ by 1-2%.
Data for other metal interlayers are available on request. In uncoated two-pane configurations, the OKATECH U-value increases to approx. 4.6 W/m²K. Solar heat gain coefficient and light transmission values are also significantly higher.
The above data are approximate. They are based on measurements of recognized test institutes and calculations derived from these measurements.
At the moment, not all suppliers have adapted their key data to the currently applicable regulations. When making comparisons, please pay attention to the relevant manufacturer's notes. On the basis of the old standards, total solar energy transmittances as well as shading coefficient values are each 1-3% lower, the former U-value according to DIBt/DIN is 0.1 W/m²K lower.
Structure
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Dimensions and installation
OKATECH Insulating Glass is installed like normal insulating glass. The glass bite must be 15-20 mm, depending on the type. If the height and width of the pane exceed 2 m, the minimum coverage must be at least 20 mm.
Dimensions are limited to a maximum pane surface of 7 m². Please contact us to discuss different dimensions and/or configurations.
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OKATECH® Guide Specifications (MS Word)
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