Hybrid numerical and experimental performance assessment of structural thermal bridge retrofits

  • Roberto Garay Martinez Tecnalia, Suastainable Construction Division


A methodological approach to the multi-dimensional heat transfer assessment of building envelopes is performed. The proposed method focuses 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. This paper proposes a methodology that 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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How to Cite
GARAY MARTINEZ, Roberto. Hybrid numerical and experimental performance assessment of structural thermal bridge retrofits. Journal of Facade Design and Engineering, [S.l.], v. 6, n. 2, p. 095-106, june 2018. ISSN 2213-3038. Available at: <https://journals.library.tudelft.nl/index.php/jfde/article/view/2206>. Date accessed: 24 may 2019. doi: https://doi.org/10.7480/jfde.2018.2.2206.