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Open AccessArticle

Hygrothermal Behaviour of Continuous Air Chambers on Stone Panels Façades through CFD and IRT

1
Department Architectural Constructions, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
2
Department of Continuous Medium Mechanics and Theory of Structures, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(15), 3001; https://doi.org/10.3390/app9153001
Received: 28 June 2019 / Revised: 22 July 2019 / Accepted: 24 July 2019 / Published: 26 July 2019
(This article belongs to the Special Issue Infrared Thermography Applications for Building Diagnostics)
Façades of buildings with stone cladding are widely used in contemporary architecture. This research work analyses the aerodynamic, thermal and relative humidity behaviour of this type of façade. One of the main novelties of the article is the analysis of air flow and temperature of the air chamber through finite elements with computational fluid dynamics (CFD). Ten three-dimensional models were designed to study the various parameters that influence the behaviour of the façade, including the thickness of the air chamber and the velocity of the outside air. A qualitative and quantitative analysis of temperature and humidity makes it possible to determine the areas susceptible to generating condensation. Infrared thermography (IRT) is used to obtain the actual outside temperature, which is used in the validation of finite element models. The temperature is reduced by 47% with air chambers of 3 cm instead of 1 cm with soft outside air velocity, and by up to 60% with moderate air velocity. In these cases, relative humidity increases by 96% and 74%, respectively. When the results obtained in CFD vary considerably in a particular area with respect to IRT, a possible pathology is identified. This work provides better knowledge on the durability of material and façades. View Full-Text
Keywords: CFD; IRT; air chamber; stone panels; building materials; finite elements; natural convection CFD; IRT; air chamber; stone panels; building materials; finite elements; natural convection
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MDPI and ACS Style

Lerma, C.; Mas, Á.; Gil, E.; Vercher, J. Hygrothermal Behaviour of Continuous Air Chambers on Stone Panels Façades through CFD and IRT. Appl. Sci. 2019, 9, 3001.

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