Hybrid numerical and experimental performance assessment of structural thermal bridge retrofits

Authors

  • Roberto Garay Martinez Tecnalia, Suastainable Construction Division

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DOI:

https://doi.org/10.7480/jfde.2018.2.2206

Keywords:

Building envelope, Experimental assessment, Thermal bridge, Finite Element, Envelope retrofitting

Abstract

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, R. (2018). Hybrid numerical and experimental performance assessment of structural thermal bridge retrofits. Journal of Facade Design and Engineering, 6(2), 095–106. https://doi.org/10.7480/jfde.2018.2.2206

Published

2018-06-20

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