4. Application technical notes
Current legal guidelines in different countries are oriented towards the thermal-energy quality of the EU Building Regulation 2002/91/EG.
In harmonisation thereto, the Austrian Building Institute (OIB) has determined in guideline RL 6 – Energy saving and thermal insulation – requirements for cooling demand on non-residential buildings. At the same time it has been determined that a maximum internal room temperature of 27°C is to be achieved in accordance with ÖNORM B 8110-3.
Design for suitable summer conditions has created the challenge of mastering the optimum balance between the desire for light (and the heat energy) whilst avoiding overheating.
Thermal breakage risk
Glass with high absorption values such as tinted glass (PARSOL or ANTELIO green), may be susceptible to breakage due to temperature changes. We recommend that such glass types are processed into SECURIT or PLANIDUR.
Ug-Value
Because of the inlets and the associated influences on the U-value, a calculation according to EN 673 has only an orientation meaning. COOLSHADE has therefore undergone tests to EN 674 „Glass in Building – Determination of thermal conductivity coefficient (U-Value)“ – using the Plate Method at the ift Rosenheim.
Particulars relating to rebate dimension
The COOLSHADE expanded metal inserts have, as standard, a continuous transparent plastic profile around the perimeter which is distanced and secured. Normal rebate dimensions may result in the necessary expansion gaps to become visible between the insert and spacer bar.
Marking
The marking of the insulated glass – manufactured date and customer position – can be seen on the bottom right of the plastic U-profile when viewed from outside.
[PDF] General Glazing Guidelines
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