prikaz prve stranice dokumenta Thermal transmittance of a composite lightweight wall panel with integrated load-bearing structure: Experimental versus numerical approach
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Scientific paper - Original scientific paper
Thermal transmittance of a composite lightweight wall panel with integrated load-bearing structure: Experimental versus numerical approach
Case studies in construction materials, 19 (2023); 1-21. https://doi.org/10.1016/j.cscm.2023.e02631
Gaši, Mergim; Milovanović, Bojan; Tkalčić, Domagoj; Jelčić Rukavina, Marija

Institutional repository: Repository of the Faculty of Civil Engineering, University of Zagreb

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Gaši, M., Milovanović, B., Tkalčić, D. & Jelčić Rukavina, M. (2023). Thermal transmittance of a composite lightweight wall panel with integrated load-bearing structure: Experimental versus numerical approach. Case studies in construction materials, 19., 1-21. doi: 10.1016/j.cscm.2023.e02631

Gaši, Mergim, et al. "Thermal transmittance of a composite lightweight wall panel with integrated load-bearing structure: Experimental versus numerical approach." Case studies in construction materials, vol. 19, 2023, pp. 1-21. https://doi.org/10.1016/j.cscm.2023.e02631

Gaši, Mergim, Bojan Milovanović, Domagoj Tkalčić and Marija Jelčić Rukavina. "Thermal transmittance of a composite lightweight wall panel with integrated load-bearing structure: Experimental versus numerical approach." Case studies in construction materials 19 (2023): 1-21. https://doi.org/10.1016/j.cscm.2023.e02631

Gaši, M., et al. (2023) 'Thermal transmittance of a composite lightweight wall panel with integrated load-bearing structure: Experimental versus numerical approach', Case studies in construction materials, 19, pp. 1-21. doi: 10.1016/j.cscm.2023.e02631

Gaši M, Milovanović B, Tkalčić D, Jelčić Rukavina M. Thermal transmittance of a composite lightweight wall panel with integrated load-bearing structure: Experimental versus numerical approach. Case studies in construction materials [Internet]. 2023 [cited 2024 October 05];19:1-21. doi: 10.1016/j.cscm.2023.e02631

M. Gaši, B. Milovanović, D. Tkalčić and M. Jelčić Rukavina, "Thermal transmittance of a composite lightweight wall panel with integrated load-bearing structure: Experimental versus numerical approach", Case studies in construction materials, vol. 19, pp. 1-21, 2023. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:237:134496. [Accessed: 05 October 2024]

Metadata
Title (english)Thermal transmittance of a composite lightweight wall panel with integrated load-bearing structure: Experimental versus numerical approach
AuthorMergim Gaši
AuthorBojan Milovanović
AuthorDomagoj Tkalčić
AuthorMarija Jelčić Rukavina
Author's institutionUniversity of Zagreb
Faculty of Civil Engineering
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Civil Engineering
Abstract (english)
One of the most important parameters when it comes to heat losses in buildings is the thermal transmittance or U-value. Therefore, great importance should be given to the determination of U-values, especially for elements where there is a high thermal bridge effect, as is the case with lightweight steel frame (LSF) structures. Since LSF structures are usually geometrically more complex, especially when diagonal elements are present, the determination of the overall U-value of these elements is usually done either on scale models in the laboratory or by numerical methods. This paper compares different methods for determining the total U-value for four different polyurethane foam-filled LFS walls and a reference wall made of EPS. Analytical (ISO 6946), experimental (Guarded Hot Box Method and HFM) and numerical 2D and 3D calculations were used to determine the U-value. The aim of the comparison was to verify which methods can be used for more complex geometries of LSF walls when there is a stronger influence of point thermal bridges due to the additional diagonal bracing. All methods showed similar U-values with the highest absolute deviation of 17.18% between the HFM and the 3D numerical calculations. The analytical method for inhomogeneous building elements given in ISO 6946 agrees well with all methods with the maximum absolute deviation of 8.83% between the analytical and HFM method. The work showed the importance of the placement of the HFM sensor for the determination of the surface heat flux, as incorrect placement of the sensor can result in inadequate U-values that deviate up to 167% from the true value.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titleCase studies in construction materials
Numberingvol. 19, pp. 1-21
e-ISSN2214-5095
DOIhttps://doi.org/10.1016/j.cscm.2023.e02631
URN:NBNurn:nbn:hr:237:134496
Publication2023
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-09-05 08:34:43