Higher transmission and lowest iron content solar glass in the world with 60 ppm
Low potential induced degradation (PID) leading to higher module output sustainably
Higher chemical durability leading to superior performance
Very high hydrolytic resistance and ability to cater the requirement of larger module like 96 cells and standard 72/60 cells module
The fully tempered solar glass is
2 times stronger than heat-strengthened glass and 4 times stronger than annealed glass
Has an enhanced mechanical strength over 180 Mpa
Much safer to operate with compared to heat strengthened glass
Shakti: Solar Glass in Matt-Matt Finish
Borosil recently developed Shakti: Solar glass in matt-matt finish on both sides
The transmission value reaching upwards of 94.0% with use of an appropriate AR Coating
Shakti forms around 50% of our sales within one year of product development
Forms a good bond with EVA: The adhesion results (Peel Test) are much better in comparison with the standard requirements of 60 N/cm² - 70 N/cm²
No changes are necessary in certification of bill of material
The module manufactures in many European countries use matt-matt solar glass
2 mm Fully Tempered Solar Glass
World’s 1st Manufacturer of 2 mm fully tempered solar glass.Special recognition by Hon. Prime Minister of India Shri. Narendra Modi
Low cost of ownership throughout the life of the project in terms of higher mechanical strength, safety, longer life etc.
Fully tempered 2 mm solar glass is 2 times stronger than heat-strengthened glass
The glass is safer and stronger than heat strengthened glass (that leads to the larger and sharper pieces when broken), qualifies as a safety glass for BIPV, rooftops and claddings
Easier for handling, movements and installation: 35% lighter than the traditional 3.2 mm glass
The frameless modules with this glass have superior edge sealing leading to increased module life up to 40 years with no power losses
Glass-to-glass module is 700 times more water vapour diffusion tight
Higher reliability – reduced rate of module failure, uses laminated modules as a roof itself
NoSbEra: Antimony-Free Solar Glass
Borosil has developed NoSbEra: World's first Antimony-free solar glass
The world is staring at a burning issue of most hazardous substance "Antimony" present in solar glass
Antimony in solar glass is toxic and causes
Skin and respiratory problems
Interferes with gastro-intestinal functions
Causes chromosomal damage in leucocytes, inhibits healthy reproduction
Possibly carcinogenic to humans
Limits set by various agencies on Antimony in drinking water
(USA Environment Protection Agency: A limit of 6 ppb
World Health Organization (WHO): A limit of 5 ppb
California Environmental Protection Agency (CalEPA): A public health goal of 1 ppb for Antimony
Proportion of Antimony in solar glass is typically 0.2% to 0.3% (2 to 3 million ppb)
Each PV module has a front glass weighing about 16 kg and thus an Antimony content of 32 to 48 grams
The Antimony from crushed glass leaches out and gets mixed with water and enters the soil which affects seed germination process
The problem posed by solar glass containing Antimony is of GIGANTIC proportions
By 2030 the estimated proportion of solar glass as a percentage of total panel mass for different PV panel technologies C-Si (80%), CIGS (90%), CdTe (95%)
The Estimated cumulative solar glass waste will be 1.5-7 Million tonnes by 2030. This leads to an exposure of 3000-20000 tons of Antimony
Borosil has been able to successfully remove the Antimony from Solar glass
Institut fur Solartechnik SPF, SWITZERLAND, widely considered as a GOLD STANDARD for testing and certification of solar glass publishes in its website, test results of solar glass from some of the top solar glass manufacturers in the world
Test results published by SPF establish that Antimony free glass by Borosil has nil photo-degradation and the highest efficiency amongst the solar glasses
Selene: An Antiglare solar glass is a recent innovation of Borosil. Anti-glare glass has a specially designed textured surface.
It uses a diffusion mechanism to diffuse the reflected light off the surface
Diffusion works by reducing the coherence of the reflected image
It makes these unwanted images unfocused to the eye and reduces their interference with viewing
When the diffusion effect is increased, considerable less light is reflected coherently which eliminates the glare
The transmission in Anti-glare glass is slightly lower than the usual non-textured solar glass
The glass has undergone test conducted by SPF (SolartechnikPrufungForschung), Rapperswil, Switzerland (World’s leading institute operating in the area of Solar R&D and testing and considered as a Gold standard)
The results indicate that Selene achieves the reflected luminance value 19,000 cd/m2 as against the limit of 20,000 Cd/ m2 set for airport installations
Selene is suitable for Solar PV installations near Airport
Solar Glass with Anti-Refelective Coating
The Anti-reflective coated solar glass gives transmission beyond 94%
Anti-reflection coatings on solar glass consist of a thin layer of dielectric material, with a specially chosen thickness
The factors impacting destructive interference of light and reflection are as below,
The refractive index (RI) of the coating material
The thickness of the coating
In order to ensure maximum transmission the solar glass manufacturer needs to ensure following:
Selection of a coating material with right refractive index
Appropriate application method to ensure optimum thickness of the coating
Selection of a coating materials with long term durability
The laboratory tests to ensure durability, refractivity and light transmission
Investment in an AR coating line that ensures uniform coating with optimum thickness
Assessment of impact during module manufacturing process
Field trials of the modules coated with Anti-reflective coating on front glass
Solar Glass with Anti-Soiling Coating
The problem is dirty solar modules tend to cause loss in energy production, depending upon weather conditions and localized terrain
There are many countries where solar projects are facing common environmental conditions such as,
Wind speed/direction
Dust
Moisture
Solar glass treated with Anti-Soiling coating soils less quickly and is easier to clean
The modules can maintain their optimal performance for longer, while reducing the number of cleaning cycles, labour and consumables needed to clean solar installations
Some Anti-Soiling coatingshave the same anti-reflective properties as industry-leading Anti-Reflective (AR) coating
Coating brings direct performance improvements and indirect maintenance savings, boosting the IRR of solar projects in dry environments
