Mirrors for Thermosolar

Mirrors by Solar Glass

The quality of a parabolic mirror depends on the precision of its parabola. A very precise parabola will enable higher ray concentration on the receiver and is thus more productive and cost-effective. SGG MIRALITE SOLAR parabolic mirrors combine superior precision and uniform curvature with high reflectivity (93% for 4 mm glass thickness). The mirrors are also tempered which guarantees greater resistance to high wind loads, less breakage, and consequently increased durability.

The unique composition of SGG Miralite Solar gives the solar mirror superior corrosion resistance and UV stability. The SGG Miralite Solar has been tried and tested through extensive outdoor exposure and accelerated test measures

With SGG MIRALITE® SOLAR parabolic mirrors you have:

• a solar energy reflectance above 93% (4 mm),
• excellent durability under extreme environmental conditions,
• tempered mirrors and their advantages: high mechanical resistance (no need for 5 mm mirrors), strong improvement in breakage rates during transport and installation, optimum safety for installation and maintenance personnel, superior resistance to high wind loads...
• high precision bending process: high repeatability of mirror shape, excellent intercept value, patent pending on measurement technology.

A CLEAR ADVANTAGE

Excellent Solar Reflectivity

From sourcing the perfect sand to floating the glass to be processed in the end product, Saint-Gobain Solar offers innovations such as SGG DIAMANT SOLAR, one of the best extra-clear glass solutions on the market with very low iron content allowing for extremely high energy transmission. The SGG DIAMANT SOLAR glass specially developed by Saint-Gobain for solar applications has passed the SPF procedure “Certification of Solar Glass” version 2.1 and was assigned to class U1. It is used to produce Saint-Gobain Solar’s SGG MIRALITE SOLAR and SGG MIRALITE SOLAR PREMIUM mirrors dedicated to the thermosolar market with solar reflectivity up to 94% for 3 mm glass thickness.

Outstanding Durability

By fully automating the manufacturing process for all its product lines, Saint-Gobain Solar guarantees perfect geometry and high-quality standards to provide the market with a solution for every project.
As the world’s leading supplier of parabolic and flat mirrors, Saint-Gobain offers customers high-quality products, continuous innovation, and partnerships they can rely on.

HARNESSING THE SUN

FLAT MIRRORS

Saint-Gobain Solar offers decades of expertise and experience and provides customized solutions for a wide variety of project designs. The SGG MIRALITE SOLAR flat mirror was the fruit of years of R&D effort.

Power Towers

Also known as “central receiver” power plants, these use an array of flat, movable mirrors (also called heliostats) to focus the sun’s rays on a collector tower. The advantage of this design is its high operating temperature. Thermal energy can be efficiently converted into electricity and stored for later use. The power tower design uses dual-axis mirror tracking.

Linear Fresnel

A linear Fresnel power plant uses long, narrow mirrors to focus the sun’s radiation onto one or more linear receivers that are positioned above the mirrors. The linear Fresnel systems offer low overall costs by sharing a receiver between several mirrors while using only one axis for tracking.

PARABOLIC MIRRORS

The quality of a parabolic mirror depends on the precision of its parabola. A very precise parabola will enable higher ray concentration on the receiver and is thus more productive and cost-effective. SGG MIRALITE SOLAR parabolic mirrors combine superior precision and uniform curvature with high reflectivity (93% for 4 mm glass thickness).
The mirrors are also tempered which guarantees greater resistance to high wind loads, less breakage, and consequently increased durability.

Parabolic Troughs

Parabolic trough power plants use parabolic mirrors which reflect the solar radiation onto a linear receiver containing a circulating heat transfer fluid. Like power towers, the thermal energy produced can be stored and converted into electricity during the night. The parabolic trough design uses single axis tracking.

THIN MIRRORS

For certain applications requiring 3-D curvature, thin mirrors (≤2 mm) need to be used. The main technology using thin mirrors is the parabolic dish.

Parabolic Dishes

This technology uses a large parabolic dish which focuses the sunlight onto a receiver situated above the dish. This system uses dual-axis tracking. Typically, the dish system is coupled with a Stirling engine, which transforms rotational kinetic energy into electricity using an electric generator.

Contact Us

lv.covilissolar@saint-gobain.com