Dynamic thermal behaviour characterization of integrated insulation clay hollow blocks for buildings energy simulations applications

• Published in: Journal of Building Engineering 2021-09, Vol.14 (5), p.515-535
• Main Authors: Bouvenot, Jean-Baptiste, Jimenez, Vincent, Desport, Lucas
• Format: Article
• Language: English
• Subjects: Civil Engineering; Clay; Clay hollow block; dynamic thermal behaviour; Engineering Sciences; Equivalence; Field tests; guarded hot box; in situ tests; Insulation; integrated insulation clay hollow block; Numerical models; Residential buildings; Simulation; Thermal conductivity; Thermodynamic properties; TRNSYS simulations
• ISSN: 1940-1493; 2352-7102; 1940-1507; 2352-7102
• DOI: 10.1080/19401493.2021.1975824

A method is proposed to obtain the thermal properties of hollow clay blocks with integrated insulation for use in building energy simulation tools. Then, we show the significant impact of the interior coating on the dynamic thermal behaviour of these blocks. This method is composed of two numerical and two experimental phases. First, a numerical model in an unsteady regime has been created and calibrated by experimental studies on a wall sample tested in a guarded hot box. Finally, a validation phase is carried out by comparing TRNSYS simulations with in situ test data from a residential building. Finally, we provide reliable values for the thermal properties to be used in energy simulation software (equivalent thermal conductivity of 0.08 W.m −1 .K −1 , equivalent density of 630 kg.m −3 and equivalent heat capacity of 430 J.kg −1 .K −1 ).