diplomska naloga
Uroš Kokot (Author), Boštjan Brank (Mentor), Goran Turk (Thesis defence commission member), Alma Zavodnik Lamovšek (Thesis defence commission member), Janko Logar (Thesis defence commission member), Matjaž Žnidaršič (Co-mentor)

Abstract

Numerična toplotna analiza dveh detajlov fasadnega elementa Qbiss Air

Keywords

gradbeništvo;diplomska dela;UNI;toplotna prehodnost;Qbiss Air;toplotni most;metoda končnih elementov;toplotna analiza;slv;

Data

Language: Slovenian
Year of publishing:
Source: Ljubljana
Typology: 2.11 - Undergraduate Thesis
Organization: UL FGG - Faculty of Civil and Geodetic Engineering
Publisher: [U. Kokot]
UDC: 519.63:624.07(043.2)
COBISS: 6053473 Link will open in a new window
Views: 2306
Downloads: 653
Average score: 0 (0 votes)
Metadata: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Other data

Secondary language: English
Secondary title: Thermal analysis of details of Qbiss Air facade element
Secondary abstract: In this thesis numerical thermal analysis of two details of facade element Qbiss Air is performed. Qbiss Air is a new aesthetic facade element with low heat transfer coefficient and is being produced by Trimo d.d. from Trebnje. The two details are: detail panel-window and detail parapet. Numerical analysis is performed in steady state and in two dimensions. In the detail panel-window thermal analysis is performed for two different variants of the geometrical model and the results are compared. Analysis of the details is performed in computer program Ansys 13.0 using meshes with high densities and elements such as three and six node triangles and four and eight node quadrilaterals. Meshes with high density are used to determine heat diffusion through different parts of the panel that consists of different materials. The impact of number and shape of finite elements on the results is being studied. Ansys discretization error algorithm and Ansys quality mesh metrics are presented. In special chapter the basics of steady state thermal analysis with finite element method is presented. The results of analysis are temperatures and heat fluxes for a particular mesh and are presented in graphic form with added commentary. In the end of the thesis the results of numerical analysis are being calculated to recover thermal coupling coefficient, linear thermal transmittance and temperature factor at the internal surface, as dictated by the standard ISO EN 10211. These can be used to determine heat losses for buildings with Qbiss Air envelope.
Secondary keywords: graduation thesis;civil engineering;thermal transmittance;Qbiss Air;thermal bridge;finite element method;thermal analysis;
File type: application/pdf
Type (COBISS): Undergraduate thesis
Thesis comment: Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages: X, 98 str.
Type (ePrints): thesis
Title (ePrints): Thermal analysis of details of Qbiss Air facade element
Keywords (ePrints): toplotna prehodnost;Qbiss Air;toplotni most;metoda končnih elementov;toplotna analiza
Keywords (ePrints, secondary language): thermal transmittance;Qbiss Air;thermal bridge;finite element method;thermal analysis
Abstract (ePrints): V diplomski nalogi je narejena numerična toplotna analiza dveh detajlov fasadnega elementa (t.i. panela) Qbiss Air, ki ga kot nov fasadni element lepega izgleda in majhne toplotne prevodnosti izdeluje Trimo d.d. iz Trebnjega. Gre za detajl stika panel-okno in za detajl atike, t.j. stika med panelom in strešno ploščo. Numerična analiza obeh detajlov je izvedena pri stacionarnih pogojih in v dveh dimenzijah. Pri detajlu panel-okno je toplotna analiza izvedena za dve geometrijski različici. Analiza obeh detajlov je izvedena s pomočjo računalniškega programa Ansys 13.0 z zelo gostimi mrežami tri vozliščnih in šest vozliščnih trikotnih končnih elementov oziroma štiri vozliščnih in osem vozliščnih štirikotnih končnih elementov. Zelo goste mreže sem uporabil z namenom, da bi se natančno ugotovilo, kako prehaja toplota skozi različne konstrukcijske in nekonstrukcijske dele panela iz precej različnih materialov ter skozi neprezračevane zračne reže in komore napolnjene s plinom. Poseben poudarek je namenjen pripravi primerne mreže končnih elementov. Ugotavljal sem vpliv števila in oblike končnih elementov na rezultate analize. V ta namen sem študiral tudi algoritem za oceno diskretizacijske napake, ki ga uporablja program Ansys, ter kriterije, s katerimi program ocenjuje primernost oblike končnih elementov. V posebnem poglavju sem opisal osnove stacionarnega prevajanja toplote v dveh dimenzijah in pripadajočo formulacijo po metodi končnih elementov. Rezultati vseh analiz, ki so potek temperature in toplotnega toka po mreži končnih elementov, so podani v grafični obliki in pospremljenimi s komentarji. S pomočjo rezultatov numeričnih analiz sem za vsak detajl izračunal še koeficient toplotne sklopitve, korekcijski faktor linijskega toplotnega mosta ter temperaturni faktor toplotnega mosta, kot to narekuje standard SIST ISO 10211. Omenjeni koeficient in oba faktorja se bodo lahko uporabljali pri oceni toplotnih izgub stavb, ki jih bo pokrival Qbiss Air modularni fasadni sistem.
Abstract (ePrints, secondary language): In this thesis numerical thermal analysis of two details of facade element Qbiss Air is performed. Qbiss Air is a new aesthetic facade element with low heat transfer coefficient and is being produced by Trimo d.d. from Trebnje. The two details are: detail panel-window and detail parapet. Numerical analysis is performed in steady state and in two dimensions. In the detail panel-window thermal analysis is performed for two different variants of the geometrical model and the results are compared. Analysis of the details is performed in computer program Ansys 13.0 using meshes with high densities and elements such as three and six node triangles and four and eight node quadrilaterals. Meshes with high density are used to determine heat diffusion through different parts of the panel that consists of different materials. The impact of number and shape of finite elements on the results is being studied. Ansys discretization error algorithm and Ansys quality mesh metrics are presented. In special chapter the basics of steady state thermal analysis with finite element method is presented. The results of analysis are temperatures and heat fluxes for a particular mesh and are presented in graphic form with added commentary. In the end of the thesis the results of numerical analysis are being calculated to recover thermal coupling coefficient, linear thermal transmittance and temperature factor at the internal surface, as dictated by the standard ISO EN 10211. These can be used to determine heat losses for buildings with Qbiss Air envelope.
Keywords (ePrints, secondary language): thermal transmittance;Qbiss Air;thermal bridge;finite element method;thermal analysis
ID: 8312524