Characterization of the Dynamic Thermal Properties of the Opaque Elements Through Experimental and Numerical Tests. (November 2015)

• Record Type: Journal Article
• Authors: Pernigotto, G.; Prada, A.; Patuzzi, F.; Baratieri, M.; Gasparella, A.
• Is Part Of: Energy procedia. Volume 78(2015)
• Page Start: 3234
• Page End: 3239
• Publication Date: 2015-11
• Subjects: hotbox -- opaque element -- periodic boundary conditions -- numerical models -- EN ISO 13786:2007; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2015.11.786
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: The dynamic behaviour of the building opaque elements can be characterized by the periodic thermal transmittance and the time- shift, evaluated according to EN ISO 13786:2007 prescriptions (i.e., under periodic sinusoidal forcing conditions on a side and constant conditions on the other one). A modified hotbox apparatus was built to measure these dynamic parameters. We tested a single-layer timber structure and then we developed and calibrated a numerical model with ANSYS Fluent®. Different boundary conditions have been studied in the numerical model to assess the sensitivity of the results to the boundary conditions, with the aim of refining the experimental procedure.