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Open AccessArticle

Applied Research of the Hygrothermal Behaviour of an Internally Insulated Historic Wall without Vapour Barrier: In Situ Measurements and Dynamic Simulations

1
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara, 44122 Ferrara, Italy
2
Eurac Research, Institute for Renewable Energy, 39100 Bolzano, Italy
3
Department of Engineering and Architecture, University of Parma, 43124 Parma, Italy
4
Architettura Energia Research Centre, Department of Architecture, University of Ferrara, 44121 Ferrara, Italy
*
Author to whom correspondence should be addressed.
Energies 2020, 13(13), 3362; https://doi.org/10.3390/en13133362
Received: 12 May 2020 / Revised: 12 June 2020 / Accepted: 17 June 2020 / Published: 1 July 2020
(This article belongs to the Special Issue Building Energy Audits-Diagnosis and Retrofitting)
The hygrothermal behaviour of an internally insulated historic wall is still hard to predict, mainly because the physical characteristics of the materials composing the historic wall are unknown. In this study, the hygrothermal assessment of an internally thermal insulated masonry wall of an historic palace located in Ferrara, in Italy, is shown. In situ non-destructive monitoring method is combined with a hygrothermal simulation tool, aiming to better analyse and discuss future refurbishment scenarios. In this context, the original U-value of the wall (not refurbished) is decreased from 1.44 W/m2K to 0.26 W/m2K (10 cm stone wool). Under the site specific conditions of this wall, not reached by the sun or rain, it was verified that even in the absence of vapour barrier, no frost damage is likely to occur and the condensation risk is very limited. Authors proposed further discussion based on simulation. The results showed that the introduction of a second gypsum board to the studied technology compensated such absence, while the reduction of the insulation material thickness provides a reduction of RH peaks in the interstitial area by 1%; this second solution proved to be more efficient, providing a 3% RH reduction and the avoidance of further thermal losses. View Full-Text
Keywords: HeLLo; energy retrofit; non-destructive test; in situ; hygrothermal measurement; dynamic conditions; hygrothermal simulation; historic wall HeLLo; energy retrofit; non-destructive test; in situ; hygrothermal measurement; dynamic conditions; hygrothermal simulation; historic wall
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MDPI and ACS Style

Andreotti, M.; Bottino-Leone, D.; Calzolari, M.; Davoli, P.; Dias Pereira, L.; Lucchi, E.; Troi, A. Applied Research of the Hygrothermal Behaviour of an Internally Insulated Historic Wall without Vapour Barrier: In Situ Measurements and Dynamic Simulations. Energies 2020, 13, 3362. https://doi.org/10.3390/en13133362

AMA Style

Andreotti M, Bottino-Leone D, Calzolari M, Davoli P, Dias Pereira L, Lucchi E, Troi A. Applied Research of the Hygrothermal Behaviour of an Internally Insulated Historic Wall without Vapour Barrier: In Situ Measurements and Dynamic Simulations. Energies. 2020; 13(13):3362. https://doi.org/10.3390/en13133362

Chicago/Turabian Style

Andreotti, Mirco; Bottino-Leone, Dario; Calzolari, Marta; Davoli, Pietromaria; Dias Pereira, Luisa; Lucchi, Elena; Troi, Alexandra. 2020. "Applied Research of the Hygrothermal Behaviour of an Internally Insulated Historic Wall without Vapour Barrier: In Situ Measurements and Dynamic Simulations" Energies 13, no. 13: 3362. https://doi.org/10.3390/en13133362

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