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Published: Građevinar 74 (2022) 5
Paper type: Scientific paper-Preliminary report
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Effect of perforations and slits on hygrothermal properties of EPS

Mergim Gaši, Bojan Milovanovic, Ivana Banjad Pečur, Marina Bagarić

Abstract

This paper presents the results of research on the influence of perforation and slits on the water vapour diffusion of expanded polystyrene (EPS) and the influence of the size and number of perforations and slits on the thermal conductivity of EPS board. The research was conducted using numerical models (control volume methods) with varying sample thickness, slit spacing, and depth and diameter of perforations. The numerical model showed that it is possible to obtain up to 42.18 % better water vapour diffusion compared to EPS board without perforation with an increase in thermal conductivity of 9.02 %. Also, the results of this study show that the effective vapour diffusion coefficient depends on the thickness of the perforated EPS samples.

Keywords
numerical model, perforated EPS, heat flow, water vapor diffusion, equivalent thermal conductivity

HOW TO CITE THIS ARTICLE:

Gaši, M., Milovanovic, B., Banjad Pečur, I. ., Bagarić, M.: Effect of perforations and slits on hygrothermal properties of EPS, GRAĐEVINAR, 74 (2022) 5, pp. 369-392, doi: https://doi.org/10.14256/JCE.3483.2022

OR:

Gaši, M., Milovanovic, B., Banjad Pečur, I. ., Bagarić, M. (2022). Effect of perforations and slits on hygrothermal properties of EPS, GRAĐEVINAR, 74 (5), 369-392, doi: https://doi.org/10.14256/JCE.3483.2022

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Authors:
GASI WEB
Mergim Gaši
University of Zagreb
Faculty of Civil Engineering
05 bojan Milovanovic 25 1
Bojan Milovanovic
University of Zagreb
Faculty of Civil Engineering
Ivana Banjad Pecur WEB
Ivana Banjad Pečur
University of Zagreb,
Faculty of Civil Engineering,
Department of Materials
08 Marina Bagaric 28
Marina Bagarić
University of Zagreb
Faculty of Civil Engineering
Department of Materials