Q-Air – detailed physical properties o o o o o o Centre of glass heat transmission (Ug) Temperature dependency of the centre of glass Ug value Angular dependency of solar heat gain (g – value) Linear heat transmittance value (ψ - values) Light transmission (LT), solar heat gain (g) datasheets Sound insulati

Table of contents Centre of glass heat transmission (Ug) Temperature dependency of the centre of glass Ug value 4 Seasonal dependency of the solar gain (g) Linear heat transmittance value (ψ - values) Light transmission (LT), solar heat gain (g) datasheets Sound insulation

Centre of glass heat transmission (Ug) Calculation standard: • Boundary conditions: Ti (internal) Te (external) hi he Krypton 95% * Argon 90% * Air * Air * Low-E coated glass on at least one side.

Temperature dependency of the centre of glass Ug value Heat transfer through the glazed unit consists of heat radiation exchange among the glass panes and gas-gap related heat transfer combining conduction and convection. Q-Air reduces heat transfer using low thermal conductivity gas, which in most applications is argon and through the application of Low-E coatings, which mitigate heat radiation. Sealed glass units’ centre of glass U value (Ug) change with exterior conditions. A simulated (EN 673) glass deflection’s dependent Ug for the Q-Air 5 and triple pane unit: 0,9 0,8 0,7 0,6 0,5 0,4 0,3...

Seasonal dependency of the solar gain (g) Since real solar gain is angle of incidence dependent, it makes sense to check how this property influences the overall seasonal g value as one could naturally expect that due to the different effective solar incidence angles between summer and winter there would be difference in effective g values as incidence angle of the solar radiation changes through the year. 0,4 0,35 0,3 DGU The change in solar gain (g) originates in direct solar light being sent through many layers of glass where mutual Fresnel reflections diminish transmitted light at high angles...

Linear heat transmittance value (ψ - values) Calculation standard: • Linear thermal transmittance (ψ): Estimated value. Interpolated between triple-pane value with the same spacer type (0.038 W/mK – 18 mm spacers) and Q-AIR5 Estimated value. The same configuration as Q-AIR3L Report on the initial type calculation of the linear thermal transmittance of the horizontal and vertical joints of the system and of the panel QATT3 according to the standard SIST EN ISO 10211:2008 (No. P 0073/15-520-5) Estimated value. Interpolated from Q-Air 5 (standard 18 mm spacers) Estimated value. Interpolated from...

Light transmission (LT), solar heat gain (g) datasheets Selected basic glass combinations are disclosed below. Q-Air 3, Q-Air 3E Twin silver selective coated outer glass super selective coated outer glass ID 7127 11672 11682 11692 11707 Q-Air 4G Twin silver selective coated outer glass super selective coated outer glass ID 7127 11672 11682 11692 11707 Q-Air 5, Q-Air 5G, Q-Air 5S Twin silver selective coated outer glass super selective coated outer glass ID 7127 11672 11682 11692 11707 Triple silver

Sound insulation By default, thick Q-Airs, Q-Air 3, Q-Air 4G, Q-Air 5, Q-Air 5S, Q-Air 5G and Q-Air 6 offer sound insulation, Rw, of 43 dB, where with improvements 55 dB is achievable. Thinner Q-Airs, Q-Air 3L, Q-Air 3E and Q-Air 4K offer sound insulation performance, Rw, 35 dB or better. A-Air 3 test result example: