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Open AccessArticle

Assessment of the Use of Venetian Blinds as Solar Thermal Collectors in Double Skin Facades in Mediterranean Climates

1
Centre de Diagnòstic Industrial i Fluidodinàmica, Universitat Politècnica de Catalunya BarcelonaTECH (UPC CDIF), Av. Diagonal 647, 08028 Barcelona, Spain
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Càtedra JG per a l’Estudi de la Sostenibilitat d’Edificis, Universitat Politècnica de Catalunya BarcelonaTECH, Av. Diagonal 647, 08028 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Energies 2017, 10(11), 1825; https://doi.org/10.3390/en10111825
Received: 23 September 2017 / Revised: 3 November 2017 / Accepted: 7 November 2017 / Published: 10 November 2017
The global trend on energy integration and building efficiency is making both researchers and building developers look for technical solutions to use facade surfaces for energy harvesting. In this work, the assessment of the thermal performance of a double-skin facade (DSF) with a venetian blind-type of structure used as a solar thermal collector by means of computational fluid dynamics (CFD) is presented. A Venetian blind collector would allow for heat rejection/energy harvesting and exterior views simultaneously and can be easily integrated into the DSF aesthetical design. For the purposes of this study, the modeled facades (south, west, and east-oriented) were set to be located in Barcelona (Spain), where large solar gains are a constant condition throughout the year, and such large semi-transparent envelopes lead to interior over-heating in buildings, even during the winter. For the studied facades, both the reductions in radiative heat gains entering the building and the heat recovery in the Venetian blind collector were evaluated for a yearlong operation. View Full-Text
Keywords: double skin facades; computational fluid dynamics; solar thermal collector; energy integration; thermal performance analysis double skin facades; computational fluid dynamics; solar thermal collector; energy integration; thermal performance analysis
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Velasco, A.; Jiménez García, S.; Guardo, A.; Fontanals, A.; Egusquiza, M. Assessment of the Use of Venetian Blinds as Solar Thermal Collectors in Double Skin Facades in Mediterranean Climates. Energies 2017, 10, 1825.

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