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Total solar energy transmittance (TSET) and light transmission, standard types

OKALUX Type Light transm. direct % Light transm. diffuse % TSET % SC % 45/46 45 36 46 53 37/40 37 30 40 46 33/35 33 25 35 41 28/31 28 22 31 36 25/27 25 19 27 31 23/25 23 17 25 29 Legend and related values: unit
2 standard technical term U W/m K DIN EN 673 DIN EN 674 Thermal transmittance, U
g = U TSET % DIN EN 410 Total solar energy transmittance or solar heat gain coefficient T
v % DIN EN 410 Light transmission (direct/hemispheric) R
w dB DIN EN 20140 Sound reduction coefficient F
C % DIN 4108 Reduction factor of a solar control system, F
C =TST/TSET
reference SC % GANA Manual Shading coefficient, SC=TSET/0.86 The above data are approximate data. 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. This information applies for structures with a 6 mm outer pane and a laminated inner pane of 8 mm. Lower total solar energy transmittance values can be implemented on request by custom-made structures. 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%.

UV protection

? 100% UV protection possible on request
OKALUX GmbH 97828 Marktheidenfeld Germany Tel.: +49 (0) 9391 900-0 Fax: +49 (0) 9391 900-100 www.okalux.com info@okalux.de Infotext OKALUX engl 28.03.2007 2 (3)