Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Impact of the Hygrothermal Dynamic Modelling of Opaque Walls on the Energy Performance of Buildings in the Mediterranean Climate

Piero Bevilacqua 1, Roberto Bruno 1, Natalia Shushunova 2, Stefania Perrella 1, Daniela Cirone 1, Natale Arcuri 1
1 Department of Mechanical, Energy and Management Engineering, University of Calabria, Italy
2 Department of Integrated Safety in Construction, National Research Moscow State University of Civil Engineering

Abstract: The U-value plays a crucial role to determine building energy performances, nevertheless the calculation is often conducted by neglecting heat and humidity transportation phenomena. Effects such as wall exposure and weather conditions can be weighted by the dynamic hygrothermal modelling of opaque walls. This study focused on the evaluation of the monthly average thermal transmittance of a traditional vertical wall by the WUFI software. The results were then employed in TRNSYS to determine the thermal energy demands of two reference buildings in the Mediterranean climate. U-value deviances up to 33% and noticeable variations in the thermal energy demands were detected.
Keywords: Building energy consumption, Moisture content, Hygrothermal simulation
Pages: 1841 - 1848