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Termički mostovi u zgradama kao posledica urbanističkih transformacija

By Aleksandar Rajčić

Abstract

The paper analyzes the deterioration of energy performance in buildings and construction defects caused by thermal bridges resulting from changes taking place in urban planning, for example in Vojvode Stepe street in Belgrade. The transformation of the urban matrix done over the last 50 years coupled with a time lag in implementation, resulting in partial sequences to completed buildings, has left a number of free side walls (gable ends), which are exposed to temperature influences. In some cases, these walls are adequately heat-treated, but in many others (especially in existing buildings) they are not, causing increased heat loss mould growth, leading to construction damage, and health risks to users. This paper presents a methodology for testing the risk of condensation in a specific example, using the computational support of T Studio software, intended for 2D calculations of thermal bridges, with an emphasis on contact temperature in the interior, relative humidity, and a term that is new to us: Temperature factor.U radu se analizira pogoršanje energetskih performansi zgrada, kao i građevinska oštećenja koja su nastala usled dejstva termičkih mostova, a kao posledica nekih od promena koje se odvijaju u urbanizmu, na primeru ulice Vojvode Stepe u Beogradu. Transformacija urbane matrice koja se odigrava poslednjih 50 godina, a naročito danas, spregnuta sa vremenskim pomakom u realizaciji, rezultuje delimično kompletiranim nizovima zgrada, sa brojnim slobodnim bočnim zidovima (zabatima), koji su eksponirani temperaturnim uticajima. U nekim slučajevima, ove pozicije su na adekvatan način termički tretirane, a u brojnim slučajevima, koji su naročito prisutni kod postojećih zgrada nisu, te su to mesta gde su pojačani toplotni gubici, i zone u kojima se odvija razvoj buđi, koji vodi građevinskim štetama i zdravstvenim rizicima po korisnike. U radu se prezentuje metodologija provere rizika od kondezacije, na konkretnom primeru, uz računsku podršku autorskog softvera T Studio, namenjenog za 2D proračune termičkih mostova, sa naročitim osvrtom na kontaktne temperature u enterijeru, relativnu vlažnost vazduha i pojam koji je nov u nas: temperaturni faktor

Topics: thermal bridges, temperature factor, mould, gable wall, termički mostovi, temperaturni faktor, buđ, zabatni zid
Publisher: 'National Library of Serbia'
Year: 2013
DOI identifier: 10.2298/FUACE1301013R
OAI identifier: oai:raf.arh.bg.ac.rs:123456789/139
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