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Application of aerogel-based plaster towards thermal retrofit of historical building facades : a computational assessment

Authors: Proskurnina, Olga;

Application of aerogel-based plaster towards thermal retrofit of historical building facades : a computational assessment

Abstract

Diese Diplomarbeit befasst sich mit der Auswirkung der Aufbringung von Aerogel-basierten D��mmputzsystemen auf historische / artikulierte Fassaden. Im Rahmen der europ��ischen 20-20-20 Strategie besteht die Notwendigkeit die thermische Performance nicht nur von neuen Geb��uden, sondern auch des Geb��udebestandes zu verbessern. Weil viele f��r den Neubau einsetzbare Systeme aus verschiedenen Gr��nden (Denkmalschutz, Materialkompatibilit��t) im Geb��udebestand nicht oder nur sehr schwierig einsetzbar sind, ist die Entwicklung von neuen Materialien f��r geb��udebestandsgerechte thermische Sanierungen ein sich rasch entwickelndes Gebiet geworden. Aerogel-basierte D��mmputze stellen eine neue Alternative zu althergebrachten D��mmstoffen dar, die eine hohe D��mmleistung mit dem Erhalten der prinzipiellen Erscheinungsform von Fassaden kombinieren. In dieser Diplomarbeit wird der Effekt eines Hochleistungs-Aerogel-Putzsystems auf typische Details von historischen Fassaden untersucht. Oftmals sind Anschluss- oder Ornamentdetails solcher Fassaden thermisch kritische W��rmebr��cken, die im Zuge einer Sanierung besonderes Augenmerk ben��tigen. Daher werden in dieser Arbeit mit Hilfe eines numerischen Simulationsprogramms f��r W��rmebr��cken verschiedene Sanierungsszenarien dieser Details unter Verwendung des Aerogel-Putzssystems untersucht, mit anderen Sanierungsvarianten verglichen und evaluiert. Betrachtete Indikatoren sind hierbei die sich ergebenden Innenoberfl��chentemperaturen, der lokale W��rmestrom im Bereich der Details und das Kondensations- und Schimmelrisiko. Zus��tzlich wird der Effekt von Sanierungen mit den verschiedenen Varianten auf die energetische Gesamtperformance eines Geb��udes beispielhaft anhand eines typischen Wiener Gr��nderzeithauses illustriert.

This thesis presents a study which refers to an impact of application of aerogel-based insulating plaster system on historical building facades. Considering European cutting-edge 20-20-20 strategy there is an urgent need of improving thermal performance of new and already existing buildings with the use of high-performing materials. In this regard, aerogel- based plaster is one of the most potential alternatives to current traditional building insulation materials, combining the benefits of traditional building insulation materials and enhanced thermal performance. The aim of this research is to address an issue of application of aerogel-based plaster, its thermal properties and thus its contribution to mitigating a heat loss through the building envelope and a thermal bridging effect. This work aims to evaluate performance of aerogel-based insulating plaster system, specifically interior surface temperatures, heat flow through a wall construction, condensation risk and mould growth via advanced computer tools. Additionally, an influence of thermal bridging effect on a calculation of annual energy demand of a typical Viennese historical building is analyzed.

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Keywords

aerogel plaster, thermal bridge evaluation, Thermal insulation, energy performance, building envelope

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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