Hybrid numerical and experimental performance assessment of structural thermal bridge retrofits
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2018
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Abstract
A methodological approach to the multi-dimensional heat transfer assessment of building envelopes is performed. The proposed method is particularly focused on thermally weak points in envelope-structure junctions and the assessment of envelope retrofit alternatives. Thermal performance in these spots is seldom assessed in energy audit processes, although it is one of the main heat loss paths in many insulated façade solutions. An envelope-slab junction case is presented, where multi-dimensional heat transfer occurs. The present paper proposes a methodology which allows for a hybrid experimental and numerical performance assessment in such circumstances. A numerical model is calibrated against experimental data, which is then modified to reflect various envelope retrofit solutions. Several possible analysis procedures are proposed, based on the capacities of transient thermal models.
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Publisher Copyright: © 2018 TU Delft. All rights reserved.
Keywords
Multi-dimensional heat transfer , Building envelopes , Envelope-slab junction , Thermal models , Multi-dimensional heat transfer , Building envelopes , Envelope-slab junction , Thermal models , Building envelope , Envelope retrofitting , Experimental assessment , Finite element , Thermal bridge , Civil and Structural Engineering , Architecture , Building and Construction , Project ID , info:eu-repo/grantAgreement/EC/H2020/637186/EU/Breakthrough solutions for adaptable envelopes for building refurbishment/BRESAER , info:eu-repo/grantAgreement/EC/H2020/637186/EU/Breakthrough solutions for adaptable envelopes for building refurbishment/BRESAER , Funding Info , This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 637186 , This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 637186
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Garay , R & Garay Martinez , R 2018 , ' Hybrid numerical and experimental performance assessment of structural thermal bridge retrofits ' , Journal of Facade Design and Engineering , vol. 6 , no. 2 , pp. 95-106 . https://doi.org/10.7480/jfde.2018.2.2206