Glass manufacturer Guardian Industries in Auburn Hills, Mich., is presenting its line of solar glass products at SolarPACES 2009, September 15-18, in Berlin. Guardian will feature its EcoGuard Solar Boost mirrors for concentrating solar power (CSP) applications. Samples of both of the company’s laminated parabolic (LP) and monolithic parabolic (MP) mirrors will be shown, as well as its float, pattern and coated solar glass products.

SolarPACES is an international cooperative organization bringing together teams of national experts from around the world to focus on the development and marketing of concentrating solar power systems (also known as solar thermal power systems). It is one of a number of collaborative programs managed under the umbrella of the International Energy Agency to help find solutions to worldwide energy problems.

Guardian’s EcoGuard Solar Boost-LP has a minimum solar reflectivity of 94.5 percent at AM 1.5 (ISO 9050). It is made up of two lites of glass laminated together with a PVB interlayer. A mirrored surface is contained within the laminate on the backside of the forward glass. The thin front glass results in a shorter transmission path and industry benchmark reflectivity performance. EcoGuard Solar Boost-LP has also been extensively field tested for durability and validated using accelerated test protocols. The combined glass and PVB layers provide strong rigidity and durability compared to traditional monolithic glass systems. The laminated construction also results in optimum damping, wind resistance and reduction of subsequent field component damage.

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EcoGuard® Solar Boost-MP features a solar reflectance of greater than 93 percent, the highest percentage for monolithic parabolic mirrors. A precise manufacturing process yields a smooth, accurate mirror with an intercept factor of greater than 99.5 percent. EcoGuard Solar Boost-MP also has durability that is ensured by a multi-layer backing paint system designed for long-term environmental exposure.  

The EcoGuard Solar Boost product line also includes flat surface mirrors in a variety of glass thicknesses and reflectance/performance levels to meet the unique needs of customers in the parabolic dish, Fresnel-based and central-receiver CSP and CPV markets.