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OKATHERM Double Glazing Units

OKATHERM offers • very good thermal insulation • if required, thermal solar control through reduced total solar energy transmittance • If required, lower glare through reduced light transmission • a large number of colour and structural design options

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
OKALUX GmbH 97828 Marktheidenfeld Germany Tel.: +49 (0) 9391 900-0 Fax: +49 (0) 9391 900-100 www.okalux.com info@okalux.de Infotext Okatherm engl 20.06.2007 1 (5)