United Facade

Thermo-Chromic Glass

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Thermo-Chromic Glass

Thermo-Chromic glass is an up-and-coming technology in the field of window design. This intelligent material can automatically adjust the tint of the glass by utilizing heat and light from the sun. As a result, Thermo-Chromic glass can reduce glare and enhance energy efficiency inside a building.

The Thermo-Chromic material located inside the window pane is responsive to both heat and light. As the intensity of direct sunlight warming the pane increases, the material darkens, effectively reflecting glare and maintaining a cooler and more comfortable indoor temperature. Conversely, as the levels of light and heat decrease, the tint of the glass becomes lighter until it is nearly indistinguishable from a typical window pane.

Benefits of Thermo-Chromic Glass:

• Easy installation as it can be fitted into a building facade just like regular glass
• Enhanced safety and noise insulation due to internal PVB lamination
• Rapid transitioning between tinted and clear states, within minutes of being triggered
• Maintains an uninterrupted view of the outside environment at all times
• Reduces glare, which can cause discomfort and lower productivity
• No requirement for wiring since it is not electrically-powered
• Lowers the need for air-conditioning by blocking infrared radiation.

How Thermo-Chromic windows work?

Various Thermo-Chromic materials have been utilized so far, such as silicate, borosilicate, and phosphosilicate glasses, as well as transition metal oxides. Among these, the most prevalent material is vanadium dioxide.

Vanadium dioxide can be applied to a window in two ways: it can either be deposited as a thin film onto a single glass panel, or it can be laminated within a PVB film and then enclosed within an insulated unit consisting of a single, double, or triple-glazed glass (also known as an Insulated Glass Unit or IGU).

The dynamic tinting effect of Thermo-Chromic glass is primarily caused by the absorption of radiant solar energy. However, it can also be influenced by indirect thermal exchange, such as conduction or convection from nearby building materials such as the glass, bricks, spacers, or the metallic frame after they have been heated by the sun.

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