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Preliminary investigation on the transient hygrothermal analysis of a CLT-based retrofit solution for exterior walls

Vincenzo Costanzo; Gianpiero Evola; Luigi Marletta; Giorgio Roccella

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  <identifier identifierType="DOI">10.5281/zenodo.5552147</identifier>
      <creatorName>Vincenzo Costanzo</creatorName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="">0000-0002-8426-1835</nameIdentifier>
      <affiliation>University of Catania</affiliation>
      <creatorName>Gianpiero Evola</creatorName>
      <affiliation>University of Catania</affiliation>
      <creatorName>Luigi Marletta</creatorName>
      <affiliation>University of Catania</affiliation>
      <creatorName>Giorgio Roccella</creatorName>
      <affiliation>University of Catania</affiliation>
    <title>Preliminary investigation on the transient hygrothermal analysis of a CLT-based retrofit solution for exterior walls</title>
    <subject>hygrothermal analysis; climate analysis; building simulation</subject>
    <date dateType="Issued">2021-09-09</date>
  <resourceType resourceTypeGeneral="ConferencePaper"/>
    <alternateIdentifier alternateIdentifierType="url"></alternateIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.5549857</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf"></relatedIdentifier>
    <rights rightsURI="">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
    <description descriptionType="Abstract">&lt;p&gt;This paper investigates the transient hygrothermal performance of an innovative energy and seismic renovation solution for reinforced concrete (RC) framed buildings, based on the addition of Cross-Laminated Timber (CLT) panels to the outer walls, in combination with wood-based insulation. This solution is being developed in the framework of a four-year EU-funded project called e-SAFE. The investigation relies on numerical simulations in DELPHIN 6.1, by considering combined heat and mass transfer (HAMT) due to water vapour diffusion and capillary transport. The proposed solution is tested in three different climates in Italy, to verify whether the CLT layer and the outer waterproof vapour-open membrane, inserted to protect the wood-based insulation from rain, still allow the effective drying of the vapour accumulated in liquid form in the walls, while also preventing mould formation. The results show that the increased thermal resistance of the wall assembly significantly reduces the total water content, although moderate risks of mould growth in the wooden materials may occur in coldest climates.&lt;/p&gt;</description>
    <description descriptionType="Other">this is the pre-print version of the conference paper</description>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/501100000780</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/Horizon 2020 Framework Programme - Innovation action/893135/">893135</awardNumber>
      <awardTitle>Energy and Seismic AFfordable rEnovation solutions</awardTitle>
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