2D-toplotna analiza stavbnega ovoja na podlagi 3D-modela : diplomska naloga

Bizjak, Dejan (author), Košir, Mitja (mentor)

Diplomsko delo zajema toplotno analizo stavbnega ovoja s pomočjo programskega orodja THERM 7.5. Ovoj stavbe je bil izrisan v programu AutoCAD s pomočjo oblaka točk, pridobljenega z laserskim skeniranjem. Izrisani so trije profili stavbnega ovoja z različno stopnjo členjenosti: profil, ki predstavlja idealiziran stavbni ovoj (minimalno členjen); profil, ki predstavlja model obravnavane stavbe; in profil, ki predstavlja realno stanje na podlagi oblaka točk iz 3D-skeniranja. Za vsakega izmed profilov je bilo modeliranih 6 križanj, ki so bila analizirana v THERMu. Križanja so geometrijsko modelirana v skladu s SIST EN ISO 10211:2017. Rezultati 2D-toplotne analize so prikazani v obliki izoterm, termografskega izrisa toplotnega polja, vektorjev toplotnega toka in z intenzivnostjo toplotnega toka. Na podlagi pridobljenih rezultatov lahko sklepamo, da členjenost v primeru obravnavane stavbe vpliva na spremembo toplotnega polja v stavbnem ovoju ter s tem na toplotni tok in toplotne izgube stavbe. Najmanjši toplotni tok teče skozi idealiziran profil. Razgibanost stavbnega ovoja vpliva na povečanje toplotnega toka skozi dele stavbe, kjer je stena zamaknjena v notranjost ali pa se medetažna plošča skozi steno nadaljuje v zunanjost. V takih primerih se nam lokalno poveča toplotna prehodnost, kar posledično vpliva na zmanjšanje energetske učinkovitosti

• Language: Slovenian
• Keywords: 2D-toplotno polje, toplotni mostovi, stavbni ovoj, lasersko 3D-skeniranje, prehod toplote, toplotna analiza stavbnega ovoja
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Publisher: [D. Bizjak]
• Year: 2017
• PID: 20.500.12556/RUL-96484
• UDC: 692.232:004.946(497.4)(043.2)
• COBISS.SI-ID: 8180065
• Publication date in RUL: 02.10.2017

BIZJAK, Dejan, 2017, 2D-toplotna analiza stavbnega ovoja na podlagi 3D-modela : diplomska naloga [online]. Bachelor’s thesis. D. Bizjak. [Accessed 14 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=96484

Secondary language

• Language: English
• Title: 2D thermal analysis of a building envelope on the base of a 3D model : Graduation thesis

Abstract

The thesis deals with the thermal analysis of a building envelope, using the software tool THERM 7.5. The building envelope is drawn in the AutoCAD program, using the point cloud acquired by means of laser scanning. Three profiles of the building envelope are drawn, each with a different degree of division: the profile presenting the ideal building envelope (minimal division); the profile presenting the model of the building in question; and the profile presenting the real state, which is based on the point cloud from the 3D scanning. For each profile, 6 crossings are modelled and analysed in THERM. The crossings are geometrically modelled according to SIST EN ISO 10211:2017. The results of the 2D thermal analysis are presented in the form of contour lines, thermographic drawing of the thermal field, heat flux vectors and intensity of the heat flux. Based on the acquired results, it can be concluded that the division in the case of the building in question has an effect on the change of the thermal field in the building envelope and consequently on heat flux and heat loss of the whole building. The heat flux is smallest in the idealized profile. A dynamic building envelope affects the heat flux to increase, especially through the parts of the building, where the wall is moved inside the building or where the reinforced concrete plate continues through the wall to the exterior. In such cases the thermal conduction increases locally, which consequently affects the thermal efficiency to decrease.

• Keywords: 2D thermal analysis, building envelope, 3D scanning, heat flux