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O. Proskurnina, U. Pont, A. Mahdavi:
"The performance of vacuum glazing in existing window constructions: A case study";
Talk: Proceedings of the CESBP Central European Symposium on Building Physics AND BauSIM 2016, Dresden, Germany; 2016-09-14 - 2016-09-16; in: "Proceedings of the 3rd Central European Symposium on Building Physics", J. Grunewald et al. (ed.); Technische Universität Dresden / Scientific Committee of the CESBP, (2016), 978‐3‐8167‐9798‐2; 435 - 440.

The general concept of vacuum glazing is not new. Nevertheless, the integration of vacuum glass products in existing constructions represents a formidable challenge. This contribution focuses on the thermal performance of vacuum glazing as deployed in existing casement windows. We used a numeric thermal application to simulate a conventional casement window ("Kastenfenster") while considering various retrofit scenarios involving vacuum glazing. Thereby, we explored: i) thermal bridging effect in different joint configurations, ii) position of vacuum glazing in external and internal wings, iii) the potential for reduction of the heating demand of a common typology ("Gründerzeit") of existing buildings in Vienna, Austria. To obtain an initial impression of the reliability of the numeric simulations, we undertook a comparison of simulation results with measurements. This was made possible through a mock-up of a casement window equipped with vacuum glazing, which was assembled and empirically examined in a climate chamber by our research collaborators of "Holzforschung Austria" (Schober & Mahdavi, 2016).

[no german version available]The general concept of vacuum glazing is not new. Nevertheless, the integration of vacuum glass products in existing constructions represents a formidable challenge. This contribution focuses on the thermal performance of vacuum glazing as deployed in existing casement windows. We used a numeric thermal application to simulate a conventional casement window ("Kastenfenster") while considering various retrofit scenarios involving vacuum glazing. Thereby, we explored: i) thermal bridging effect in different joint configurations, ii) position of vacuum glazing in external and internal wings, iii) the potential for reduction of the heating demand of a common typology ("Gründerzeit") of existing buildings in Vienna, Austria. To obtain an initial impression of the reliability of the numeric simulations, we undertook a comparison of simulation results with measurements. This was made possible through a mock-up of a casement window equipped with vacuum glazing, which was assembled and empirically examined in a climate chamber by our research collaborators of "Holzforschung Austria" (Schober & Mahdavi, 2016).