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Chromatics technology significantly improves the insulation performance of insulated glass units (IGUs) by utilizing low emissivity surfaces. With a surface emissivity of 0.9 for float glass and 0.3 for aluminum, Chromatics allows IGUs to emit energy more efficiently. Testing indicates that IGUs featuring Chromatics foil on surfaces two and three can achieve U-values as low as 1.4 W/m²K when argon-filled. This technology offers long-lasting performance without risks of gas leakage, meeting compliance standards like BS.EN.1279 for enhanced durability.
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Emissivity • Surface Emissivity is the ability of a surface to emit electromagnetic radiation • For Float Glass, Emissivity = 0.9 • For Aluminium, Emissivity =0.3 • This means that if an IGU is constructed using Chromatics, with the foil on Surface 2 or 3, that surface will be emitting into the airspace much more efficiently than a glass surface
How Big is the Effect? Insulation Values • 6mm Clear Float U = 5.7 W/m²K • 6mm Chromatics U = 4.1 W/m²K • Conventional Argon filled IGU U = 1.7 – 1.4W/m²K • IGU with Chromatics foil to surfaces 2 & 3 U = 1.7W/m²K • As above, but Argon Filled U= 1.4W/m²K
Advantages • The Chromatics unit can have insulation values similar to a gas filled unit • There is no chance of deterioration over time due to gas leakage or unit failure • If the units are constructed with gas filling, then the performance is even higher
BS EN 1279 • In order to exploit the advantages of this product, each manufacturing unit will need to demonstrate compliance with BS EN 1279 to ensure durability and allow CE marking • Indicative testing is currently being carried out by a third party for surface 2 (or 3) • Final results expected December 2010, but present indications are very good