Higrotermalno ponašanje ventiliranih teških ovojnica zgrada

doctoral thesis

• Title (english): Hygrothermal performance of a ventilated heavyweight building envelope
• Author: Marina Bagarić
• Mentor: Ivana Banjad Pečur (mentor)
• Committee member: Bojan Milovanović (predsjednik povjerenstva)
• Granter: University of Zagreb; Faculty of Civil Engineering; Zagreb
• Defense date and country: 2020-07-09, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Basic Technical Sciences; Materials
• Universal decimal classification (UDC): 624/625 - Civil and structural engineering. Civil engineering of land transport. Railway engineering. Highway engineering

Abstract

Poznavanje higrotermalnog ponašanja od ključne je važnosti za izgradnju trajnih, energetski visokoučinkovitih zgrada koje su sigurne od građevinskih šteta uzrokovanih vlagom te pružaju zdravu i ugodnu unutarnju klimu korisnicima. U ovom radu, istraženo je higrotermalno ponašanje inovativnog predgotovljenog teškog fasadnog panela, čija specifičnost leži u korištenju velikog postotka recikliranog građevnog otpada za proizvodnju betonskih slojeva panela te zračnom sloju s prirodno provjetravanim zrakom. Korištena metodologija istraživanja sastoji se od tri razine koje se međusobno nadograđuju u jednu zaokruženu cjelinu: (i) razina materijala – laboratorijska ispitivanja higrotermalnih svojstava dvije vrste betona s recikliranim agregatom; (ii) razina elementa – uspostava sustava terenskog monitoringa higrotermalnog ponašanja predmetnog panela, koji čini elemente ovojnice jedne obiteljske kuće, u realnim uvjetima vanjskog okoliša i korištenja kuće. U sklopu ove razine razvijen je i numerički model panela, koji je nakon kalibracije eksperimentalnim podacima korišten za daljnje parametarske analize kako bi se istražila prikladnost panela za druga klimatska područja i usporedilo ponašanje s različitim fasadnim sustavima. Utvrđen je utjecaj prirodno provjetravanog zraka na toplinsko ponašanje panela i njegovu osjetljivost na nepredviđene prodore vlage. Zadnju razinu (iii) čini razina cijele zgrade kroz koju je istražen utjecaj masivnosti panela na toplinsko ponašanje zgrade, kao i utjecaj ponašanja korisnika na potrošnju energije i unutarnju ugodnost.

Abstract (english)

Assessing the hygrothermal performance is crucial for achieving durable and energy high-performing buildings that are moisture-safe and healthy with comfortable indoor climate. This thesis investigates the hygrothermal performance of an innovative prefabricated heavyweight facade panel. The specificity of panel lies in utilizing a high percentage of recycled construction and demolition waste for the production of panel’s concrete layers and cavity with naturally ventilated air. The research methodology consists of three levels forming an integrated whole: (i) material level - laboratory testing of hygrothermal properties of two types of concrete with recycled aggregate; (ii) element level - field monitoring of the hygrothermal performance of a building envelope constructed by the panel under consideration, in real outdoor conditions and occupants’ use. At this level, a validated numerical model was used for additional parametric analyses of panel’s suitability for other climate conditions and its comparison with different facade systems. The influence of naturally ventilated air in cavity on the panel’s thermal performance and its sensitivity to unexpected moisture leakages was determined. The last level, i.e. (iii) the whole building level, investigated the influence of panel’s thermal mass and user behaviour on energy consumption in building and indoor comfort, respectively.

• Keywords: Beton s recikliranim agregatom; Građevni otpad; Vanjska ovojnica; Ventilirana fasada; Predgotovljeni sendvič panel; Higrotermalno ponašanje; Toplinska masa; Energetska učinkovitost; Unutarnja ugodnost; Zgrada gotovo nulte energije
• Keywords (english): Recycled aggregate concrete; Construction and demolition waste; Building envelope; Ventilated facade; Precast sandwich wall panel; Hygrothermal performance; Thermal mass; Energy efficiency; Indoor comfort; Nearly zero-energy buildings
• Language: croatian
• URN:NBN: urn:nbn:hr:237:814939
• Study programme: Title: Postgraduate doctoral study of the Faculty of Civil Engineering; Study programme type: university; Study level: postgraduate; Academic / professional title: doktor/doktorica znanosti, područje tehničkih znanosti, polje građevinarstvo (doktor/doktorica znanosti, područje tehničkih znanosti, polje građevinarstvo)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Closed access
• Created on: 2021-07-20 13:24:47