3.3 OPC UA for glass technology terms (Insulating Glass Units)
3.3.1 Cavity
Space between glass panes, width depends on spacer. Filled with a gas or gas mixture to provide demanded thermal properties.
3.3.2 Gas Filling
The gas filling refers to gas in the space between glass of an Insulating Glass Unit IGU. Typically, the gas used is Argon or Xenon, both gases which allow good thermal resistance.
3.3.3 Perimeter Protection
Used to protect the second sealant of an Insulating Glass Unit. Typically, an aluminum tape is used to wrap the edge of the unit.
3.3.4 Primary Sealing
Applied to the spacer to prevent ingress of moisture and loss of gases between spacer and glass.
3.3.4.1 Untitled
3.3.5 Sealant Depth
The minimum dimension from the spacer to the outer edge of the silicone secondary seal.
3.3.5.1 Untitled
3.3.6 Secondary Sealing
A Sealing applied to IGU after assembling.
3.3.6.1 Untitled
3.3.7 Spacer
Element which is used in IGU’s to physically separate the individual glass panes.
3.3.7.1 Untitled
3.3.8 Insulating Glass Unit (IGU)
Unit of 2 or more panes of glass. Gas filling is used to set thermal transfer properties. Spacer defines the distance between the panes and also accounts for thermal properties. Sealants prevent loss of gas filling and entrance of humidity. Figure 1 shows a sectional drawing of an IGU with the different elements.
Figure 1 – Sectional drawing of an IGU | Key: 1 glass panes 2 primary sealing 3 spacers with desiccant 4 secondary sealing |
3.3.9 IGU Line
Production line for IGU´s.
3.3.10 Laminated Glass
Type of glass according to prEN12543-1:2020, e.g., glass that is made of two or more panes of glass joined together by a layer of plastic, or polyvinyl butyral (PVB).