How and what kind of coating designs are used in architectural glass?

I suggest you to have a look at the following links:

1. https://www.glassonweb.com/article/design-coatings-game-with-colors-and-performances

2.

3. https://www.sciencedirect.com/topics/engineering/architectural-coating

4. http://www.doiserbia.nb.rs/img/doi/0354-4605/2013/0354-46051301035S.pdf

Dear Vemuri Sri ranga sai praveen kumar,

Architectural glass comes in three different strength categories. There are four main type of glasses are 1) Annealed Glass. 2) Heat Strengthened Glass. 3) Tempered or Toughened Glass. and 4) Laminated Glass.

Glass is the dominant building material in modern architecture. It creates visual accents and offers multiple technical features like glass for thermal insulation, solar protection, and sound proofing, as well as a design component, safety glass, or as a part of solar plants. The industry nowadays offers glass with customized technical data for every application possible.

Glass is used because it is most transparent glazing material in the building envelope, including windows in the external walls. Glass is also used for internal partitions and as an architectural feature. When used in buildings, glass is often of a safety type, which includes reinforced, toughened and laminated glasses. Generally type of couple of glasses such as float glass, shatterproof glass, laminated glass, extra clean glass, chromatic glass, tinted glass, toughened glass and glass blocks are used for construction.

Specialized glass types that are made with different qualities to enhance their performance are laminated glass, tinted glass, coated glass, wire glass, and insulating glass. Coated glass is covered with reflective or low-emissivity (low-E) coatings. In addition to providing aesthetic appeal, the coatings improve the thermal performance of the glass by reflecting visible light and infrared radiation.

In architecture, a special emphasis is often placed on energy-saving building methods, particularly in view of the rising energy and raw material costs which are the greatest challenge of our times. Single glazing, which was standard until the middle of the 1970, is responsible for large thermal losses (Ug Ø ≈ 5.8 W/m2 K). Double glazing then became more common, with its improved Ug value of about 3.0 W/m²K. In contrast to metals, which re-radiate about 2 to 10 percent of the absorbed energy, i.e. which have a low emissivity value, ε, glass does not possess this favourable property. More than 80 percent of absorbed heat is emitted via the glass surface (ε ≈ 0.85). In order to combine the transparency of glass with the excellent emission properties of precious metals, thin metal films are deposited onto the glass.

Different coating materials are deposited onto glass to produce functional coatings. These provide adhesion, thermal functions, cover and protection, forming a complex system. The optical properties are achieved by applying the interference principle, which is familiar from anti-reflective coatings on camera and spectacle lenses.

Factor- solar factor, shading factor, color reflecting index, energy absorption, thermal effect of insulating glass and light transmittance are considered before applying coating.

Self-cleaning or easy-to-clean glass uses titanium dioxide coatings as a catalyst to break up organic deposits. It requires direct sunlight to sustain the chemical reaction and rainwater to wash off the residue. Anorganic deposits are not affected by the coatings. Photochromic coatings incorporate organic photochromic dyes to produce selfshading glass. Glass with electrochromic coatings utilizes a small electrical voltage, adjusted with dimmable ballasts, to adjust the shading coefficient and visible light transmission. Thermochromic laminated glazing (TLG) enables to regulate daylight, automatically adapting dynamically to the continuously changing climatic conditions, aids in reducing the energy needs of a building and providing thermal comfort.

Sputtering is the process in closed chamber is method to imply coating on glass.

Ashish

Dear Vemuri Sri ranga sai praveen kumar,

Architectural glass comes in three different strength categories. There are four main type of glasses are 1) Annealed Glass. 2) Heat Strengthened Glass. 3) Tempered or Toughened Glass. and 4) Laminated Glass.

Glass is the dominant building material in modern architecture. It creates visual accents and offers multiple technical features like glass for thermal insulation, solar protection, and sound proofing, as well as a design component, safety glass, or as a part of solar plants. The industry nowadays offers glass with customized technical data for every application possible.

Glass is used because it is most transparent glazing material in the building envelope, including windows in the external walls. Glass is also used for internal partitions and as an architectural feature. When used in buildings, glass is often of a safety type, which includes reinforced, toughened and laminated glasses. Generally type of couple of glasses such as float glass, shatterproof glass, laminated glass, extra clean glass, chromatic glass, tinted glass, toughened glass and glass blocks are used for construction.

Specialized glass types that are made with different qualities to enhance their performance are laminated glass, tinted glass, coated glass, wire glass, and insulating glass. Coated glass is covered with reflective or low-emissivity (low-E) coatings. In addition to providing aesthetic appeal, the coatings improve the thermal performance of the glass by reflecting visible light and infrared radiation.

In architecture, a special emphasis is often placed on energy-saving building methods, particularly in view of the rising energy and raw material costs which are the greatest challenge of our times. Single glazing, which was standard until the middle of the 1970, is responsible for large thermal losses (Ug Ø ≈ 5.8 W/m2 K). Double glazing then became more common, with its improved Ug value of about 3.0 W/m²K. In contrast to metals, which re-radiate about 2 to 10 percent of the absorbed energy, i.e. which have a low emissivity value, ε, glass does not possess this favourable property. More than 80 percent of absorbed heat is emitted via the glass surface (ε ≈ 0.85). In order to combine the transparency of glass with the excellent emission properties of precious metals, thin metal films are deposited onto the glass.

Different coating materials are deposited onto glass to produce functional coatings. These provide adhesion, thermal functions, cover and protection, forming a complex system. The optical properties are achieved by applying the interference principle, which is familiar from anti-reflective coatings on camera and spectacle lenses.

Factor- solar factor, shading factor, color reflecting index, energy absorption, thermal effect of insulating glass and light transmittance are considered before applying coating.

Self-cleaning or easy-to-clean glass uses titanium dioxide coatings as a catalyst to break up organic deposits. It requires direct sunlight to sustain the chemical reaction and rainwater to wash off the residue. Anorganic deposits are not affected by the coatings. Photochromic coatings incorporate organic photochromic dyes to produce selfshading glass. Glass with electrochromic coatings utilizes a small electrical voltage, adjusted with dimmable ballasts, to adjust the shading coefficient and visible light transmission. Thermochromic laminated glazing (TLG) enables to regulate daylight, automatically adapting dynamically to the continuously changing climatic conditions, aids in reducing the energy needs of a building and providing thermal comfort.

Sputtering is the process in closed chamber is method to imply coating on glass.

Ashish

About 400-500 large area glass coaters produce low-E coated architectural glass every day in the world. This is probably - areawise - the biggest application of vacuum sputter deposition in the world.

Apart from that, smaller productions are in antireflective coated glass and mirrors (normally substrates of much smaller area).