Evaluation of Three Different Retrofit Solutions Applied to the Internal Surface of a Protected Cavity Wall

Galliano, R.; Wakili, K. Ghazi; Binder, Bruno; Daniotti, Bruno

doi:10.1016/j.egypro.2015.11.006

Cited by 4 publications

(5 citation statements)

References 2 publications

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“…Several in situ measurements of hygrothermal performance of interior thermal insulation systems were presented to justify their proper function as well. The papers presented, for example, by Pavlík and Černý (2008), Pavlík et al (2005), Galliano et al (2015), Said et al (2003), Toman et al (2009), Vereecken and Roels (2014), Wegerer et al (2015), Kloseiko et al (2015), and Ghazi Wakili et al (2014) belong to the most characteristic examples that can be found in the scientific literature in that respect. In the beginning of the design, a common practice was to use vapor tight systems.…”

Section: Introductionmentioning

confidence: 99%

“…This is demonstrated by a long-term hygrothermal analysis of the designed construction detail. Contrary to the combined approaches which have been used by other researchers in the past (Galliano et al, 2015; Ghazi Wakili et al, 2014; Said et al, 2003), the experimental-computational method in this article deals with heat and moisture transport in 2D space.…”

Section: Introductionmentioning

confidence: 99%

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Thermal and hygric assessment of an inside-insulated brick wall: 2D critical experiment and computational analysis

Kočí

Maděra

et al. 2018

Journal of Building Physics

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A combined experimental-computational approach is used for the analysis of hygrothermal performance of a brick wall provided with interior thermal insulation system. A 2D laboratory experiment is performed to determine temperature and moisture fields in a characteristic segment of the envelope over a sufficiently long period including cold winter months. Then, a computational model of moisture and heat transport is developed, using an integral two-phase balance equation capable of distinguishing between the particular phases of water and an enthalpy-based heat balance equation. A 2D computational representation of the experiment is used for model calibration and identification of unknown parameters, resulting in a very good agreement of experimental and calculated fields, with R 2 between 0.9687 and 0.9888. The calibrated model is subsequently used for a long-term hygrothermal assessment of the studied detail to demonstrate the functionality of the interior thermal insulation system, as well as the applicability of the developed model.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal and hygric assessment of an inside-insulated brick wall: 2D critical experiment and computational analysis

Kočí

Maděra

et al. 2018

Journal of Building Physics

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“…For these reasons, the renewal of the existing building stock is considered the most effective strategy to reduce their energy consumption by as much as 60% [4]. The retrofitting of historic buildings plays a high priority role in different national and regional research programs [5] and can play a key role in addressing the requirements of reducing GHG by 40% before 2030 [6].…”

Section: Introductionmentioning

confidence: 99%

“…Galliano at al. [5] performed an interesting study concerning the difference between the U dry and U wet values using WUFI Pro ® v6.0 software (Fraunhofer IBP Holzkirchen, Bavaria, Germany). Unfortunately, such demo models do not allow the influence of the interior contribution to the heat and moisture balance of the wall to be evaluated.…”

Section: Introductionmentioning

confidence: 99%

Evaluating the Impact of Indoor Insulation on Historic Buildings: A Multilevel Approach Involving Heat and Moisture Simulations

et al. 2021

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The energy refurbishment of historic buildings is a complex task for building envelope designers who need to carefully consider building conservation guidelines and principles. In most cases, external wall insulation techniques can determine an unacceptable alteration of the historical value of a building. For this reason, internal wall insulation techniques have been used widely in the last few decades. Nevertheless, dealing with internal wall insulation requires a complex design to avoid the risk of condensation and moisture-related pathologies. Moreover, an internal wall insulation may have a relevant impact on indoor comfort conditions. In this paper, the Monastery of Santa Maria de Monfero in Galicia (Spain) has been adopted as a building case study to compare different technological solutions based on: (i) an insulating plaster layer, (ii) dry counter wall systems. In the first step, heat and moisture transfer simulations of the wall components were performed to analyze the hygrothermal behavior of the different alternatives considering two different climate conditions. In a second step, a simulation of the whole building was performed to analyze the impact of the retrofitting strategies on the indoor climate and on the building heating and cooling demand. The obtained results show that the counter wall solution leads to higher energy savings during the heating season in the colder winter climate. However, the use of insulating thermal plaster could also be a viable solution since they lead to several advantages in summer because of their higher thermal inertia. Therefore, the selection of the most appropriate insulation technique has to be evaluated carefully considering the outdoor/indoor climate and using a case-by-case approach.

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“…Auch einige messtechnische Untersuchungen mit Holzfaserplatten als Innendämmungen wurden vorgestellt und die gemessene Temperatur und Feuchte an kritischen Stellen über eine Periode von 9 Monaten gemessen [12]. Der Einsatz von neuartigen Materialien als Innendämmung für denkmalgeschützte Gebäude wurde während des EU-Projektes EASEE [13] hinsichtlich der genauen hygrothermischen Eigenschaften [14] wie auch der Analyse des U-Wertes vor und nach dem Anbringen der Innendämmung experimentell untersucht und bei der erwähnten Konferenz präsentiert [15].…”

Section: Introductionunclassified

Vergleichende Untersuchungen zur energetischen Sanierung von Fachwerkwänden mit Aerogeldämmputz als Innendämmung

et al. 2016

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Die energetische Sanierung von Fachwerkwänden unter Beibehaltung des äußeren Erscheinungsbildes kann durch eine Innendämmung realisiert werden. Dabei sind die zeitabhängigen Temperatur‐ und Feuchteverteilungen sowie die hygro‐thermischen Eigenschaften der verwendeten Materialien von zentraler Bedeutung. Im vorliegenden Beitrag wird der Einsatz des seit 2013 auf dem Schweizer Markt erhältlichen Aerogeldämmputzes Fixit 222 sowohl als Gefachfüllung als auch als Innendämmung über eine Dauer von 19 Monaten unter realen Wetterbedingungen experimentell untersucht. Dabei wird aufgezeigt, dass der Dampfdurchlässigkeit und der Wasseraufnahmefähigkeit des Dämmsystems eine zentrale Rolle bei der Vermeidung von Feuchteansammlungen zukommt. Dieser Sachverhalt wird zusätzlich durch die Verwendung eines wasserabweisenden und diffusionsdichteren Klebespachtels und der daraus folgenden Konsequenzen noch mehr verdeutlicht. Comparative investigation of energetic refurbishment of half‐timbered walls using aerogel based plaster as internal insulation. The energetic refurbishment of half‐timbered walls keeping the external appearance unchanged can be realised by using internal insulations. The transient temperature and moisture distribution as well as the hygro‐thermal properties of the used materials are hereby of central importance. The present contribution deals with the application of the Fixit222 aerogel based plaster present on the Swiss market since 2013 as infill and interior insulation material using measured data under real climatic conditions over a period of 19 months. It is shown that the vapour permeability and the water uptake of the insulating system play a major role in avoiding moisture accumulation. This issue is emphasized by the usage of a water repelling and diffusion tighter adhesive mortar and the resulting consequences hereof.

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Evaluation of Three Different Retrofit Solutions Applied to the Internal Surface of a Protected Cavity Wall

Cited by 4 publications

References 2 publications

Thermal and hygric assessment of an inside-insulated brick wall: 2D critical experiment and computational analysis

Thermal and hygric assessment of an inside-insulated brick wall: 2D critical experiment and computational analysis

Evaluating the Impact of Indoor Insulation on Historic Buildings: A Multilevel Approach Involving Heat and Moisture Simulations

Vergleichende Untersuchungen zur energetischen Sanierung von Fachwerkwänden mit Aerogeldämmputz als Innendämmung

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