Archivio Istituzionale della RicercaTo meet the European Green Deal targets, the construction sector must improve building thermal performance via advanced insulation systems. Eco-friendly sandwich panels offer a promising solution. Therefore, this work aims to develop and validate a new eco-friendly composite sandwich panel (basalt fibres and recycled extruded polystyrene) with enhanced multifunctionality for lightweight and energy-efficient building façades. Two panels were produced via vacuum infusion—a reference panel and a multifunctional panel incorporating phase change materials (PCMs) and silica aerogels (AGs). Their performance was evaluated through lab-based thermal and acoustic tests, numerical simulations, and on-site monitoring in a living laboratory. The PCM-AG panel showed 16% lower periodic thermal transmittance (0.16 W/(m²K) vs. 0.19 W/(m²K)) and a 92% longer time shift (4.26 h vs. 2.22 h), indicating improved thermal inertia. It also achieved a single-number sound insulation rating of 38 dB. These findings confirm the panel’s potential to reduce operational energy demand and support long-term climate goals
Eco-Friendly Sandwich Panels for Energy-Efficient Façades / Sousa, Susana P. B.; Teixeira, Helena C.; Autretto, Giorgia; Cárdenas, Valeria Villamil; Fantucci, Stefano; Favoino, Fabio; Voigt, Pamela; Stelzmann, Mario; Böhm, Robert; Beltrán, Gabriel; Escribano, Nicolás; Hernández-Gascón, Belén; Tietze, Matthias; Araújo, Andreia. - In: SUSTAINABILITY. - ISSN 2071-1050. - ELETTRONICO. - 17:15(2025). [10.3390/su17156848]
Eco-Friendly Sandwich Panels for Energy-Efficient Façades
Autretto, Giorgia;Fantucci, Stefano;Favoino, Fabio;
2025
Abstract
To meet the European Green Deal targets, the construction sector must improve building thermal performance via advanced insulation systems. Eco-friendly sandwich panels offer a promising solution. Therefore, this work aims to develop and validate a new eco-friendly composite sandwich panel (basalt fibres and recycled extruded polystyrene) with enhanced multifunctionality for lightweight and energy-efficient building façades. Two panels were produced via vacuum infusion—a reference panel and a multifunctional panel incorporating phase change materials (PCMs) and silica aerogels (AGs). Their performance was evaluated through lab-based thermal and acoustic tests, numerical simulations, and on-site monitoring in a living laboratory. The PCM-AG panel showed 16% lower periodic thermal transmittance (0.16 W/(m²K) vs. 0.19 W/(m²K)) and a 92% longer time shift (4.26 h vs. 2.22 h), indicating improved thermal inertia. It also achieved a single-number sound insulation rating of 38 dB. These findings confirm the panel’s potential to reduce operational energy demand and support long-term climate goals
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https://hdl.handle.net/11583/3003116
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