True Design Freedom—with Glass that Insulates like a Wall
With thermal insulation approaching that of the surrounding walls, Heat Mirror® multi-cavity insulating glass (IG) units enable architects and engineers to design curtain wall, storefront and operable window systems that meet the most stringent requirements for energy efficiency and occupant comfort.
Alpenglass™ with Heat Mirror® contains one or more coated films suspended within the sealed airspace of a dual-pane IG unit to create up to four super insulating cavities that buffer against heat loss or heat gain. By combining Heat Mirror® film with high-performance low-emissivity glass and argon or krypton gas fill, Alpenglass™ can be used to tune envelope performance by either maximizing or minimizing solar heat gain, while optimizing daylighting and views. In fact, Alpenglass™ powered by Heat Mirror® helps to reduce energy costs by achieving a center-of-glass U-value as low as 0.05, and maintains a warm glass surface temperature for a comfortable internal environment year round.
Higher performance, Lighter Weight & Lower Environmental Impact than Triple Pane
Alpenglass™ with Heat Mirror ® weighs up to 33% less than comparably sized triple pane IG, eliminating the need for expensive, reinforced framing systems or additional installation labor, and making it an ideal drop-in solution for standard framing systems designed for dual-pane IG. In addition, a comprehensive Life Cycle Analysis completed by Eastman Chemical Co., the manufacturer of Heat Mirror® film, shows that replacing the center lite of glass with film enables Alpenglass™ with Heat Mirror® to consume 30% less energy Cradle-to-Gate than triple pane IG.*
And because Heat Mirror® film is practically weightless, multiple films can be used to reach a new level of insulating performance needed for the latest Passive House, Net Zero Energy and LEED Platinum/Gold-rated designs.
Performance comparison configuration detail:
Heat Mirror IG = VE12M / HM88f (x1/x2) / Clear; Triple-pane IG = VE12M / VE185 / Clear; Dual-pane IG = VE12M / ClearGas fill: Argon 90%; Krypton 90%;
Performance data calculated using WINDOW 6.3 software using standard NFRC environmental conditions.
*Pending third-party review