ISOLAR® GLAS
DEFINITION
ISOLAR GLAS is a glazing formed by two or more glasses, separated by an aluminium section (intercalated – separated section) with a molecular sieve filling which absorbs the moisture regain, avoiding possible condensation formed in the air chamber.
ISOLAR GLAS the basis for a double or triple glazing
ISOLAR GLAS éis a glazing formed by two or more glasses, separated by an aluminium section (intercalated – separated section) with a molecular sieve filling which absorbs the moisture regain, avoiding possible condensation formed in the air chamber.
ISOLAR® GLAS glazing is produced through the use of the highest technology which enables intact the insulation properties of the product. We apply a butyl string on each side of the aluminium section separator, supplied by a molecular desiccant sieve. The section with the dipped butyl will be glued to the double glazed glasses, and thus, to the air chamber. As soon as it is dipped we apply a second sealer (polyurethane or silicone) between the back side of the separator section and the exterior margin of the glass. With this second insulated barrier we get total leakage integrity of the chamber and the glazing.
The hermetic chamber of ISOLAR® GLAS double glazing allows to obtain a considerably high insulation than a simple glass.
A ISOLAR® GLAS double glazing with a 12mm chamber provides a U energy transmission coefficient of 2,8 W/m2 K, while in a simple glass it reaches one of 5,8 W/m2 K. With ISOLAR® GLAS double glazing we can reduce about 50% of energy loss through the glass. The chamber can also be filled with a noble gas so as to improve even more thermal efficiency. All ISOLAR® GLAS double glazing have an identifying stamp on one of the glasses as well as the manufacturer and the date when it was made. Besides this stamp, ISOLAR® is also printed on the aluminium section in. A real ISOLAR® shall have such identifying characteristics.
One of the main functions of an insulating ISOLAR® GLAS double glazing is the energy efficiency. So as to analyse if a glazing is more or less efficient, starting from an energy point, we must observe how the solar energy functions when it passes through it. To do so we must define a variety of concepts that will help you understand a better analysis.
The radiant energy
Radiant energy is the entire solar flow incident in an object. In the case of double insulated glazing we define three main steps: the energy which passes through the glazing, the one which is reflected and the one which is absorbed by the glass. – Energy Transmission (τe) is defined as the total amount of energy which passes through the glazing. It is represented as a percentage of the incident energy on it. – Energy Reflex (ρe) is equivalent to the quantity of energy which is reflected by a glazing. It is also represented by a total percentage of energy incised in the glazing. – Energy absorption (αe) or the quantity of solar energy absorbed by the glass; this will cause an increase of its temperature which will irradiate to the outside and to the inside part of such energy. – Solar factor (g) consists of the total amount of energy that the sun inserts in a place, i.e., it is the result of adding energy transmission plus the energy absorption which is irradiated to the inner side through the glass (g = τe +αei ). By calculating τe, ρe y αe we take into account that the sun is positioned in a 30ºangle on the horizon. All the information related to the solar energy behaviour when it passes through a glazing can be obtained by the so called heat transmission coefficient (U coefficient) or the amount of energy measured in Watts (W) which passes through a square feet of glazing (by hour(h) to the k calculation) and for each Kelvin degree (K) or centigrade (º) difference between both glazing sides.
