OKATHERM
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INFOTEXT OKATHERM Double Glazing Units A variety of structural and function designs can be created using OKATHERM functional insulating glass. A broad range of glass types, coatings and structures offer protection and supply functions for the façade or roof: • • • • • very good heat insulation thermal sun protection thanks to the reduced light transmission reduced dazzle due to reduced light transmission sound insulation constructive space on account of glass projections, integrated fixing systems, shaped glazing Technical Data Heat insulation A wide range of U-values can be realised with OKATHERM, in accordance with your requirements. The U-value depends on: • the number of cavities • the emissivity of the glass coating(s) • the filling of the cavity with air or gas With 2-pane build-ups, U-values from 1.0 W/(m²K) (0.18 Btu/hr/ft²/°F) can be achieved, with 3 panes 0.5 W/(m²K) (0.10 Btu/hr/ft²/°F) can be achieved. Sound insulation The sound attenuation value of a glazing system depends in a complex way on • glass thicknesses and coatings in laminated glass • cavity • gas filling The figure of 36 dB for standard structures (6 mm glass /16 mm cavity/4 mm glass) can be increased to over 50 dB by means of suitable measures. Total solar energy transmittance and light transmission The total solar energy transmittance or solar heat gain coefficient (TSET or s.h.g.c.) of a glazing system is the sum of • solar transmission • secondary heat transfer Solar transmission depends to a large extent on the coatings and types of glass involved. Secondary heat transfer also depends on the position of the coating. The light transmission of a glazing system depends to a large extent on • glass coating(s) • glass types and thicknesses OKALUX GmbH 97828 Marktheidenfeld Germany Tel.: +49 (0) 9391 900-0 Fax: +49 (0) 9391 900-100 www.okalux.com info@

Unbeschicht. neutral 80/63 neutral 80/59 neutral 80/64 neutral 80/59 neutral 76/51 neutral 71/50 neutral 72/42 neutral 70/39 bluish 70/37 bluish 70/37 neutral 69/37 neutral-grey 62/29 neutral 61/34 neutral 61/33 bluish 60/33 sivber neutral 60/27 neutral 53/28 bluish 51/27 bluish 50/27 neutral 48/35 reflective 47/29 reflective 43/23 bluish 41/22 bluish 40/22 bluish green 32/21 reflective 30/17 bluish 25/17 reflective Colour rend. Energy transm. External appear. Light refl. Heat transm. Light transm. Heat transm. UV transmission can be reduced or completely eliminated on request by means of...

INFOTEXT Legend and related values: unit standard U W/(m2K) DIN EN 673 DIN EN 674 TSET % DIN EN 410 Tv technical term Thermal transmittance, Ug = U Total solar energy transmittance or solar heat gain coefficient Light transmission (direct/hemispheric) Light reflection (outwards, direct/hemispheric) Colour rendering (in transmission) Sound reduction coefficient Reduction factor of a solar control system, FC=TSET/TSETreference Shading coefficient, SC=TSET/0.86 Emissivity The above data are approximate data. They are based on measurements of recognized test institutes and calculations derived...

INFOTEXT Colour differences caused by solar and thermal control coatings The colour impression given by the insulating glass results from the interaction of different materials (glass, coatings) with different indices of refraction. Depending on the length of light wave and viewing angle, interference-specific colour distortions occur in the external reflection. In this connection, please note the guidelines for assessing the visual quality of insulating glass made of mirror glass. We shall be pleased to send you these guidelines on request; you can also download them as a pdf file from our...