ACCELERATED AGEING AND DURABILITY OF DOUBLE-GLAZED SEALED INSULATING WINDOW PANES

Author(s): Asphaug, S. K., Jelle, B. P., Gullbrekken, L. and Uvsløkk, S.
Paper category: Conference
Book title: XIII International Conference on Durability of Building Materials and Components - XIII DBMC
Editor(s): Marco Quattrone, Vanderley M. John
Print ISBN: none
e-ISBN: 978-2-35158-149-0
Publication year: 2015
Pages: 577-584
Total Pages: 8
Language: English

Abstract: A crucial property for double-glazed sealed insulating window panes is to maintain their thermal insulating properties and thus low U-values by keeping their low-conductance noble gas concentrations within the sealed glazing units, i.e. not admitting air into the sealed window panes. However, degradation and thus subsequent reduction or loss of lowconductance gas concentration may occur in the sealed glazing units by their exposure to outdoor climate during many years, e.g. by being exposed to solar radiation, wind, moisture, wind-driven rain, elevated temperatures and freezing/thawing cycles.

The choice of spacers in the sealed window panes is important with respect to be able to keep as low thermal transport through the window panes as possible, i.e. low U-value. In addition, the type of spacers may also influence their durability and resistance towards ageing, which hence may be characterized by the low-conductance noble gas concentration, e.g. argon, krypton or xenon, versus elapsed time in a long-term perspective.

Thus, several double-glazed sealed insulating window panes, with aluminium spacers and super spacers, have been subjected to accelerated ageing by climate ageing and elevated temperature ageing. The durability and ageing of the sealed window panes have been studied and characterized by their spacer type and gas concentration as function of accelerated ageing time.

Online publication: 2015
Publication Type: full_text
Public price (Euros): 0.00