Lightweight ventilated facade prototype: acoustic performance evaluation when the ventilation surface of the air chamber varies

Andrea Niampira Daza , Joan Lluís Zamora I Mestre

The lightweight facades with ventilated air chambers have advantages as thermal radiation and damp protection, which is added to the aesthetic benefits in new buildings and renovations. In terms of acoustic performance, this solution can be more efficient than traditional facades rather then solid wall. However, this positive characteristic has not been proven, as ventilation of the air chamber seems to limit potential improvements in acoustic performance. The goal of this study was to evaluate how much additional noise protection could be achieved with the standard configuration of a lightweight facade and a ventilated air chamber versus a conventional simple solid wall. Standard acoustic evaluations were carried out with different lightweight facade configurations in which the degree of surface ventilation was changed, but the depth of the chamber was constant. This paper shows the first results obtained for in situ acoustic assays of different kinds of external cladding when the upper and lower open area of the air chamber was varied. The prototypes were installed and tested in a real facade at the ETS Escola Superior Tècnica d'Arquitectura del Vallès (Universitat Politècnica de Catalunya) as part of a research project carried out for a doctoral thesis.

Mots clés: lightweight facade; ventilated facades; acoustics lightweight facades

Domaines: Acoustique [physics.class-ph]

Andrea Niampira Daza, Joan Lluís Zamora I Mestre. Lightweight ventilated facade prototype: acoustic performance evaluation when the ventilation surface of the air chamber varies. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00810775⟩