Téléchargement | - Voir la version finale : Potential for thermal breakage of sealed double-glazing units (PDF, 1.6 Mio)
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DOI | Trouver le DOI : https://doi.org/10.4224/20327627 |
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Auteur | Rechercher : Sasaki, J. R.1 |
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Affiliation | - Conseil national de recherches du Canada
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Format | Texte, Édition |
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Description physique | 6 p. |
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Sujet | Performance thermique; contrainte thermique; double vitre scellées; fissuration; rupture (fracture); fenêtre; verre thermoréflecteur; vitrage absorbant |
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Résumé | Both panes of factory-sealed double-glazing units are susceptible to thermal breakage. The outer pane experiences large thermally induced stresses when solar radiation falls on the sealed unit in cool weather. The breakage potential is even greater for units with heat-absorbing or heat- reflecting glass in the outer pane than for units with a clear outer pane. The inner pane experiences a high thermal stress when the outdoor air temperature is very low and the unit is subjected to localized heating. The breakage potential of the inner pane is greater for heat-reflecting units with a low U-value than for clear, heat-absorbing, or high-emissivity heat-reflecting units. Measured and calculated values of thermal stress for inner and outer panes of sealed glazing units indicate that thermal stress by itself should not cause glass breakage. Extensive breakage failure will only occur if the thermal stress is augmented by other tensile stresses or if weak or damaged glass is used. In the absence of a reliable method of predicting the probability of thermal breakage in sealed units, however, all factors that can possibly reduce the potential for breakage should be accommodated in design. This is especially true for units with heat-absorbing and heat-reflecting glass. |
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Date de publication | 1970-09 |
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Maison d’édition | National Research Council of Canada. Division of Building Research |
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Série | |
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Traduction de | |
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Langue | anglais |
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Publications évaluées par des pairs | Non |
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Numéro du CNRC | NRC-IRC-1781 |
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Numéro NPARC | 20327627 |
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Exporter la notice | Exporter en format RIS |
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Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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Identificateur de l’enregistrement | 19fbd0ae-ab83-4682-ad1f-fa9e4afdba10 |
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Enregistrement créé | 2012-07-18 |
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Enregistrement modifié | 2023-01-24 |
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