Utjecaj komponenti na prijenos topline u laganim kompozitnim panelima izloženim požaru

master's thesis

• Title (english): Influence of components on heat transfer through the lightweight composite panels exposed to fire
• Author: Martina Kozlik
• Mentor: Marija Jelčić Rukavina (mentor)
• Committee member: Ana Baričević (predsjednik povjerenstva)
• Committee member: Marija Jelčić Rukavina (član povjerenstva)
• Committee member: Marijan Skazlić (član povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; Zagreb
• Defense date and country: 2021-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Civil Engineering

Abstract

Lagani kompozitni paneli imaju određene prednosti u odnosu na uobičajenu monolitnu gradnju, među kojima se najviše ističu: velika čvrstoća panela u odnosu na masu, kontrolirani uvjeti proizvodnje, jednostavnost i brzina ugradnje itd. Ovakve vrste panela predstavljaju i učinkovito rješenje za povećanje energetske učinkovitosti s obzirom na to da unutrašnjost panela mogu ispunjavati razni toplinsko-izolacijski materijali. Variranjem debljine i količine obložnih ploča osigurava se potrebno vrijeme u kojem neće doći do gubitka kriterija nosivosti, cjelovitosti i/ili izolacije panela u uvjetima požara. U ovom radu, numeričkim modeliranjem, analiziran je razvoj topline kroz lagani kompozitni panel izložen požaru. Varirana je vrsta toplinsko-izolacijskog materijala (mineralne vune i poliuretanske pjene), te debljine i broja obložnih ploča panela (gips-vlaknaste ploče) kako bi se zadovoljio kriterij toplinske izolacije u trajanju od 60 min (I60). Rezultati su pokazali da za postizanje zadanog kriterija, kompozitni panel s ispunom od poliuretanske pjene zahtjeva minimalno dvije ploče u debljini od 12,5 mm na obje strane panela, dok je za panel ispunjen mineralnom vunom dovoljna jedna gips-vlaknasta ploča od 15 mm.

Abstract (english)

Lightweight steel composite panels (LCSP) have certain of advantages over conventional monolithic constructions as: high panel strength to weight ratio, controlled production conditions, ease and speed of installation etc. Since recently, much emphasis has been placed on the energy efficiency of buildings. These types of panels are an effective solution, since the interior of the panel can be filled with different thermal insulating materials. The variation of the thickness and the number of cladding panels provides the necessary time in which the criteria of load bearing capacity, integrity and/or insulation of the panels are not lost under the conditions of fire. In this work, the heat transfer through a LSCP exposed to fire was analyzed by numerical modeling. The type of thermal insulation material (mineral wool - MW and polyurethane foam - PUR) and the thickness and number of cladding panels (gypsum fiberboard) were varied to meet the criterion of thermal insulation for 60 minutes (I60). The results showed that a LSCP filled with PUR requires at least two 12,5 mm boards on both sides of the panel to achieve the specified criterion, while one 15 mm board is sufficient for a panel filled with MW.

• Keywords: lagani kompozitni paneli; poliuretanska pjena; mineralna vuna; numeričko modeliranje
• Keywords (english): lightweight composite panels; rigid polyurethane foam; mineral wool; numerical analysis
• Language: croatian
• URN:NBN: urn:nbn:hr:237:452412
• Study programme: Title: Civil Engineering; specializations in: Construction Management, Transportation Engineering, Geotechnical Engineering, Hydraulic Engineering, Structural Engineering, Construction Materials, Theory and Modeling of Structures; Course: Construction Management; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka građevinarstva (magistar/magistra inženjer/inženjerka građevinarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2022-01-11 08:58:27