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A platform for research: civil engineering, architecture and urbanism
Investigating the thermal behavior of double-skin perforated sheet façades: Part A: Model characterization and validation procedure
Abstract New materials with external shading systems are mainly implemented on building façades to improve energy efficiency, but also to add a distinctive appearance. The double-skin perforated sheet-metal façade, an enclosure composed of sheet metal, air chambers and glass, is an example of this tendency in modern building design. The aim of this research is to study the thermal behavior of the façade taking into account several physical parameters such as, perforation rates, colors and materials, as well as the influence of wind penetration. The study also quantifies the improvements in terms of energy savings that different configurations of these parameters can bring to the building as a whole. First of all, a theoretical model was built in Matlab® based on an energy balance of these types of enclosure. The experimental process for validation purposes consisted of monitoring metallic sheets within a range of 0–35% (perforation rates), black-white (colors) and galvanized steel-aluminum (materials) in a large-scale test campaign. Excellent agreement was achieved between the outputs from the above-mentioned numerical model and the test campaign, sufficient for its validation. The behavior of different configurations will be described in a further paper, addressing their influence on cooling, heating and lighting loads in the building, with an Energyplus® model, which will be also validated with our theoretical model. Finally, additional parameters such as air-space width and location in the various climate zones defined for Spain will be carefully studied, for the optimization of design sustainability.
Highlights A theoretical model addresses thermal characterization of double-skin perforated sheet façades. Colors, materials, and perforation degrees, considering wind penetration are monitored. A detailed description of the experiments carried out was performed aiming at model validation. A second part will address energy optimization of such enclosure through Energyplus©.
Investigating the thermal behavior of double-skin perforated sheet façades: Part A: Model characterization and validation procedure
Abstract New materials with external shading systems are mainly implemented on building façades to improve energy efficiency, but also to add a distinctive appearance. The double-skin perforated sheet-metal façade, an enclosure composed of sheet metal, air chambers and glass, is an example of this tendency in modern building design. The aim of this research is to study the thermal behavior of the façade taking into account several physical parameters such as, perforation rates, colors and materials, as well as the influence of wind penetration. The study also quantifies the improvements in terms of energy savings that different configurations of these parameters can bring to the building as a whole. First of all, a theoretical model was built in Matlab® based on an energy balance of these types of enclosure. The experimental process for validation purposes consisted of monitoring metallic sheets within a range of 0–35% (perforation rates), black-white (colors) and galvanized steel-aluminum (materials) in a large-scale test campaign. Excellent agreement was achieved between the outputs from the above-mentioned numerical model and the test campaign, sufficient for its validation. The behavior of different configurations will be described in a further paper, addressing their influence on cooling, heating and lighting loads in the building, with an Energyplus® model, which will be also validated with our theoretical model. Finally, additional parameters such as air-space width and location in the various climate zones defined for Spain will be carefully studied, for the optimization of design sustainability.
Highlights A theoretical model addresses thermal characterization of double-skin perforated sheet façades. Colors, materials, and perforation degrees, considering wind penetration are monitored. A detailed description of the experiments carried out was performed aiming at model validation. A second part will address energy optimization of such enclosure through Energyplus©.
Investigating the thermal behavior of double-skin perforated sheet façades: Part A: Model characterization and validation procedure
Blanco, Jesús M. (author) / Arriaga, Pedro (author) / Rojí, Eduardo (author) / Cuadrado, Jesús (author)
Building and Environment ; 82 ; 50-62
2014-08-08
13 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2014
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