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

Autor: Luísa Pereira, Elena Lucchi, Marta Calzolari, Mirco Andreotti, Dario Bottino-Leone, Pietromaria Davoli, Alexandra Troi
Jazyk: angličtina
Rok vydání: 2020
Předmět:
HeLLo
energy retrofit
non-destructive test
in situ
hygrothermal measurement
dynamic conditions
hygrothermal simulation
historic wall
SH5_11
Control and Optimization
Materials science
Gypsum
hygrothermal simulation
PE8_12
020209 energy
PE8_16
Energy Engineering and Power Technology
Context (language use)
energy retrofit
dynamic conditions
02 engineering and technology
010501 environmental sciences
engineering.material
non-destructive test
01 natural sciences
lcsh:Technology
Nondestructive testing
Thermal
0202 electrical engineering
electronic engineering
information engineering
Geotechnical engineering
Monitoring methods
HeLLo
Electrical and Electronic Engineering
Engineering (miscellaneous)
0105 earth and related environmental sciences
Renewable Energy
Sustainability and the Environment
business.industry
lcsh:T
in situ
hygrothermal measurement
historic wall
SH3_1
Condensation
Ambientale
Masonry
13. Climate action
Frost
engineering
business
Energy (miscellaneous)
Zdroj: Energies; Volume 13; Issue 13; Pages: 3362
Energies, Vol 13, Iss 3362, p 3362 (2020)
Energies
ISSN: 1996-1073
DOI: 10.3390/en13133362
Popis: 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.
Databáze: OpenAIRE
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