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master's thesis
Numerički proračun i analiza osjetljivosti toplinskih mostova kod LSF konstrukcija
Zagreb: University of Zagreb, Faculty of Civil Engineering, 2024. urn:nbn:hr:237:444762
Kragulj, Teodora
University of Zagreb
Faculty of Civil Engineering
Materials

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

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Kragulj, T. (2024). Numerički proračun i analiza osjetljivosti toplinskih mostova kod LSF konstrukcija (Master's thesis). Zagreb: University of Zagreb, Faculty of Civil Engineering. Retrieved from https://urn.nsk.hr/urn:nbn:hr:237:444762

Kragulj, Teodora. "Numerički proračun i analiza osjetljivosti toplinskih mostova kod LSF konstrukcija." Master's thesis, University of Zagreb, Faculty of Civil Engineering, 2024. https://urn.nsk.hr/urn:nbn:hr:237:444762

Kragulj, Teodora. "Numerički proračun i analiza osjetljivosti toplinskih mostova kod LSF konstrukcija." Master's thesis, University of Zagreb, Faculty of Civil Engineering, 2024. https://urn.nsk.hr/urn:nbn:hr:237:444762

Kragulj, T. (2024). 'Numerički proračun i analiza osjetljivosti toplinskih mostova kod LSF konstrukcija', Master's thesis, University of Zagreb, Faculty of Civil Engineering, accessed 03 November 2024, https://urn.nsk.hr/urn:nbn:hr:237:444762

Kragulj T. Numerički proračun i analiza osjetljivosti toplinskih mostova kod LSF konstrukcija [Master's thesis]. Zagreb: University of Zagreb, Faculty of Civil Engineering; 2024 [cited 2024 November 03] Available at: https://urn.nsk.hr/urn:nbn:hr:237:444762

T. Kragulj, "Numerički proračun i analiza osjetljivosti toplinskih mostova kod LSF konstrukcija", Master's thesis, University of Zagreb, Faculty of Civil Engineering, Zagreb, 2024. Available at: https://urn.nsk.hr/urn:nbn:hr:237:444762

Metadata
TitleNumerički proračun i analiza osjetljivosti toplinskih mostova kod LSF konstrukcija
Title (english)Numerical calculation and sensitivity analysis of thermal bridges in LSF structures
AuthorTeodora Kragulj
MentorBojan Milovanović (mentor)
Committee memberIvana Banjad Pečur (predsjednik povjerenstva)
Committee memberBojan Milovanović (član povjerenstva)
Committee memberMarija Jelčić Rukavina (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Civil Engineering
(Materials)
Zagreb
Defense date and country2024-02-15, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Civil Engineering
Abstract
U usporedbi s tradicionalnim građevinskim metodama, LSF sustav donosi značajne prednosti u područjima održivosti, ekonomske isplativosti, procesa izgradnje i sigurnosti na radu. Međutim, ove LSF elemente treba dobro dizajnirati i zaštititi od neželjenih toplinskih mostova uzrokovanih visokom toplinskom vodljivošću čelika. U ovom radu proučava se utjecaj LSF-a na izvedbu nZEB-a. Provedena je analiza rješenja toplinskih mostova korištenjem dostupnih numeričkih modela. Pri tome je proračunato 10 karakterističnih detalja. Analizirale su se učinkovitosti takvih struktura u pogledu njihovog toplinskog mosta na U-vrijednost neprozirnih dijelova ovojnice, linearnih gubitaka topline na spojevima, rizika od kondenzacije vlage, te toplinskog mosta na ukupne energetske performanse zgrade. Glavni zaključak je bio da se toplinski mostovi minimaliziraju zahvaljujući toplinskoj izolaciji koja pokriva čelične nosače, a u gotovo svim slučajevima Ψ-vrijednosti su ispod 0,1 W/(m·K) i slobodne su od kondenzacije vlage. Provedena je i analiza osjetljivosti nekoliko geometrija te nekoliko materijala, došlo je do zaključka da dodatna vanjska toplinska izolacija poboljšava toplinsku učinkovitost zgrade, te da je bolji čelični nosač sa što tanjim presjekom i što manjom duljinom. Rad sadržava i pregled literature vezano uz zgrade gotovo nulte energije, naročito u području aspekta energetske učinkovitosti i toplinskih mostova kod sustava zgrada koje integriraju LSF.
Abstract (english)
In comparison to traditional construction methods, the LSF system brings significant advantages in the areas of sustainability, economic viability, construction processes, and workplace safety. However, these LSF elements need to be well-designed and protected against undesired thermal bridges caused by the high thermal conductivity of steel. This study investigates the impact of LSF on the performance of nZEB. An analysis of thermal bridge solutions was conducted using available numerical models, calculating 10 characteristic details. The efficiencies of such structures were analyzed concerning their thermal bridge effect on the U-value of opaque envelope elements, linear heat losses at junctions, moisture condensation risk, and overall energy performance. The main conclusion was that thermal bridges are minimized thanks to thermal insulation covering steel studs, and in almost all cases, Ψ-values are below 0.1 W/(m·K) and free from moisture condensation. Sensitivity analysis of several geometries and materials concluded that additional external thermal insulation improves the building's thermal efficiency, and a better steel stud with a thinner cross-section and shorter length is preferable. The paper also includes a literature review related to nearly zero-energy buildings, particularly focusing on the aspect of energy efficiency and thermal bridges in systems integrating LSF.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:237:444762
Study programmeTitle: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures
Course: Construction Materials
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2024-03-15 09:30:53