Iran-Made Nano-Based Reflective Tinted Glass for Buildings

This product, relying on nanotechnology, is a new solution for reducing energy consumption and improving the quality of urban life.

These glasses, relying on nanostructure coating technology, enjoy capabilities beyond ordinary glasses. Based on tests conducted in accordance with the NEN EN 410 standard, the transmission of ultraviolet (UV) rays through this glass is only about 8%, while in raw glass this amount reaches more than 62%. This significant reduction means better protection of the interior of the building, furniture and the health of residents against harmful sunlight.

On the other hand, the visible light transmission rate in nano-based tinted reflex glass is reported to be only 19%, which is a significant difference compared to the 88% light transmission rate in ordinary glass. This feature allows interior spaces to be protected from intense and annoying light radiation while enjoying optimal lighting.

Also, the light reflection rate in this product reaches 36%; this feature allows the glass surface to maintain the visual privacy of residents like a natural curtain. In this way, people inside the building are able to see the outside environment, but the interior space is not visible from the outside.

Another technical feature of these glasses is the reduction of the shadow coefficient. Based on laboratory data, the shadow coefficient in Asa Float's tinted reflex double-glazed glass is about 0.38, while this number is calculated as 0.98 in ordinary glass, and this feature indicates the high ability of the glass to prevent the sun's heat from entering the building; a factor that can play an important role in reducing energy consumption for cooling in hot seasons.

In a relevant development in June, an Iranian company had also used nanotechnology to make special glass coatings to eliminate sun radiation and save energy.

“The glass coatings we have designed can control up to 75%-90% of the heat transfer that comes through the sun’s infrared wavelength. They also eliminate the harmful ultraviolet (UV) portion of the sun’s radiation that causes skin damage and discoloration of surfaces. The technology has been developed over about 3 years,” said Saeed Madarshahi, a representative of the company.

“The advantage of this technology is that there is no need to replace the existing glass or windows. Unlike solutions that require expensive replacement of entire windows, this coating can be applied to existing glass in older buildings and has a favorable effect on the solar heat gain coefficient (SHGC),” he added.

“Unlike conventional glass, this technology does not transmit heat to the interior and just manages it. Even in winter, in cities where sunlight is a nuisance, this coating can be useful,” Madarshahi said.

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