Glass

Insulated Glass

Author: Ivan Josip, CEO of Portal-Ena d.o.o. and www.portal-ena.com/Eng/ - Owner of factory for producing uPVC and aluminum windows, doors, sliding doors and equipements

Insulated glass is glass that is composed of two or more mutually separated glass sealed interval (insulated chambers) that can be filled with air or gas. Many have the common misconception that this is the vacuum glass, but if we take the air out from insulated glass, and not to fill a vacancy with other gas we will get CONCAVE glass. Using high-quality glass for the production of insulation glass reserve the following characteristics of Insulated Glass:

undistorted image external environment
the default value of the passage of light
the default value of visibility
the default value of energy loss
the default value of thermal insulation

Construction of Insulated Glass

Insulated Glass

Construction of Insulated glass consists of:

Glass - it is important that the glass produced uniform thickness, we chose the correct thickness of glass according to the size and characteristics. The glasses selected for the production of insulation glass will mostly depend on the characteristics of insulation and glass.

Vacancy - is always filled with air or "slow" gases such as argon, krypton, xenon, or SF6. The type of gas define directly thermal insulation. What is the gas tends the better thermal insulation with respect that we have to look at the breadth of clearance. For each gas is separately requested the optimal width clearance.

Air or argon gas - al.ili thickness of 16mm PVC Spacers
Kripton plin - debljina distancera 10mm Krypton gas - thickness 10mm Spacers
xenon plin - debljina distancera 8mm xenon gas - Spacers 8mm thickness
SF6 plin - debljina distancera 8mm SF6 gas - Spacers 8mm thickness

Molekular - primary function is to dry the moisture that would be caught in the space between two glass during the production of insulated glass. Molekular also provides low level moisture, the life of insulated glass, which could penetrate the interval due to various influences. Finally, any organic vapor that could occur is eliminated molekularom. Spherical molekular used for aluminum or stainless steel spacers and molekular powder mixed with polymer to Spacers made from polymers.

Butyl - a first seal - is used for internal insulation (first barrier) insulation glass. Butyl provides a low passage of moisture, vapor and gas, and has a resistance to aging, cracking and thermal stability. Butyl is a short name for polyisobutylen, and machine it causes the heated aluminum staves Spacers Spacers before pasting on the glass surface. Connective has an outstanding ability for glass, aluminum, stainless steel, etc.

Another kit - - using polysulphide component kit, which is applied to the insulated glass after passing through the glass washing machine glass and squeezing the switch. Can be used single-kit hot-melt, which has excellent physical and chemical properties and very good resistance to high and low temperature. Hot-melt very quickly vulcanize and is used in cases where we need to quickly create insulated glass for installation.

What is the k-value R-value and U-value glass or material?

Each material has different capabilities and transmission of heat radiation, known as the conductivity, which is measured as a watt of energy transmitted cubic meter of material (sq. meter area and thickness) by stupnnju difference in temperature between the two sides of the material. Conductive material is expressed as a k-value (sometimes written, the Greek letter Λ (lambda). K-value is based on the standard thickness of 1m and is very useful for comparing two kinds of materials, but wrong when comparing different thickness. For example, concrete has high conductivity with k-values around 1, and we can say that 1m ² 1m thick concrete implemented 1W power when the temperature 1 degree difference on two sides of the cubes of concrete. If the difference in temperature of 10 ° on the two sides of the conductivity will be 10W. is expressed as k = W / mK

Insulated glass k-value

Durability of materials on heat transfer expressed as R-value, shows the characteristics of the material one meter square area, and used really thick. Thermal resistance R is calculated as the thickness of the material in meters and the reciprocal is the k-value or (1 / k). Durability of materials is expressed as R = m² ° K / W, size of material required to transmit power 1W to 1 ° difference in temperature on two sides of the material. For example, concrete 75mm thick with a k-value of 1 will have a resistance: 0.075 m divided by 1, which gives us r = 0.075. R shows the ability of a particular thickness of material to resist heat transfers.

However, as we have to count the loss of energy and it is precisely the opposite of the R-value. We have calculated the possibility of material that conducts heat. It is given with the last major expression of the values for thermal windows, U-value.U-value is easily calculated share means 1 with the R-value. Is expressed as U = W / m² ° K, the coefficient of heat transfer that shows how much heat in watts (W) passes through a square meter of certain material thickness, for one hour, if the temperature difference between input and output area of 1 ° K (Kelvin). The figure is smaller, it is better insulated glass insulator.

Improving the U-value of insulation glass can be achieved so that the interval for the air filled with slow gas, and the inner glass put Low-E and get the following U-values: