Vpliv zasnove stavbnega ovoja in obnašanja uporabnikov na rast in razvoj gliv na primeru enodružinske hiše : diplomska naloga št.: 219/OG-MO

Balant, Lucija (author), Dovjak, Mateja (mentor), Hozjan, Tomaž (comentor)

Diplomska naloga se ukvarja s problematiko prekomerne vlažnosti notranjega okolja enodružinske hiše. Namen je analizirati vpliv notranjega in zunanjega okolja na rast ter razvoj plesni in s pomočjo meritev mikroklimatskih parametrov ter izračunov parametrov gradbene fizike ugotoviti primerne rešitve za preprečevanje nastanka in rasti plesni. Metoda dela je vključevala (I) evidentiranje kritičnih točk notranjega dela stavbnega ovoja, kjer se je pojavila vidna rast plesni, (II) meritve toplotnih in vlažnostnih razmer v konstrukcijskem sklopu, (III) beleženje aktivnosti oz. obnašanja uporabnikov. Sledila je analiza rezultatov, kjer smo ugotovili odziv konstrukcijskih sklopov na rast in razvoj plesni. Rezultate meritev smo primerjali z rezultati U-Wert programa, kjer je bila izračunana toplotna prehodnost za obravnavan konstrukcijski sklop zunanje stene U = 1,50 W/(m2K), torej ta presega maksimalno dovoljeno vrednost 0,28 W/(m2K) po stari zakonodaji in 0,18 W/(m2K) po novi zakonodaji. Izračunan je bil tudi faktor fRsi skladno s standardom SIST EN ISO 13788:2013, ki predstavlja merilo za tveganje rasti plesni. Rezultati so pokazali tudi, da faktor fRsi ne preseže minimalne mejne vrednosti 0,75, torej je v obdobju izvajanja meritev obstajala nevarnost za nastanek plesni oz. kondenzacije vodne pare na površini. S pomočjo meritev in izračunov smo dokazali, da bi bilo potrebno stavbni ovoj sanirati z dodatno toplotno izolacijo (minimalno 12 cm za izpolnitev starih zakonskih zahtev in minimalno 20 cm za izpolnitev novih zakonskih zahtev) in parno oviro. Tako bi stavbni ovoj dosegel ne samo predpisan U-faktor, temveč tudi višjo površinsko temperaturo v ogrevalni sezoni (20,2 °C po starih zahtevah in 20,8 °C po novih zahtevah), fRsi pa bi postal večji od minimalne mejne vrednosti, s čimer bi se nevarnost za nastanek in razvoj plesni zmanjšala. Poleg gradbeno-tehničnih ukrepov se predlaga tudi osveščanje uporabnikov o ukrepih, ki preprečujejo nastanek plesni, kot so redno zračenje, izogibanje sušenju perila v notranjosti objekta in odmik pohištva stran od zunanjih sten.

• Language: Slovenian
• Keywords: gradbeništvo, diplomska naloga, VSŠ, GR, GR-OG, enodružinska hiša, stavbni ovoj, obnašanje uporabnikov, glive
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FGG - Faculty of Civil and Geodetic Engineering
• Place of publishing: Ljubljana
• Publisher: [L. Balant]
• Year: 2022
• Number of pages: IX, 58 str.
• PID: 20.500.12556/RUL-140364-25fa2972-63ac-db57-546a-57cf65c9f662
• UDC: 697.931:728.3(043.2)
• COBISS.SI-ID: 131398659
• Publication date in RUL: 14.09.2022

Secondary language

• Language: English
• Title: The effect of building envelope design and user behavior on the growth and development of fungi in a single-family house : graduation thesis no.: 219/OG-MO

Abstract

The thesis deals with the problem of excessive humidity in the indoor environment of a single-family house. The aim is to analyse the influence of the indoor and outdoor environment on the growth and development of mould and to identify suitable solutions to prevent it, using measurements of microclimatic parameters and calculations of building physics parameters. The working method included i) recording critical points of the internal part of the building envelope where there is visible mould ii) measuring thermal and humidity conditions in the structural envelope iii) recording occupant activity and behaviour. The results were then analysed to determine the response of the structural envelopes to mould growth and development. The results of the measurements were compared with the results of the U-Wert software where the calculated thermal transmittance for the considered external wall structural envelope was U = 1.50 W/(m2K), which exceeds the maximum allowed value of 0.28 W/(m2K) according to the old legislation [20] and 0.18 W/(m2K) according to the new legislation [21]. The fRsi factor was also calculated in accordance with SIST EN ISO 13788:2013 [8], which is a measure of the risk of mould growth. The results also showed that the fRsi factor did not exceed the minimum threshold value of 0.75. Therefore, during the measurement period, there was a risk of mould growth and water vapour condensation on the surface. The measurements and calculations showed that the building envelope needed additional thermal insulation (at least 12 cm to meet the old legal requirements [20] and at least 20 cm to meet the new legal requirements [21]) and a vapour barrier. Not only would this allow the building envelope to achieve the required U-factor, but also a higher surface temperature during the heating season (20.2 °C under the old requirements and 20.8 °C under the new requirements). What is more, the fRsi factor would become higher than the minimum limit value, thus reducing the risk of mould growth and development. In addition to the building and technical measures, it is proposed to raise the awareness of the occupants on measures to prevent mould, such as regular ventilation, avoiding drying of laundry inside the building or moving furniture away from external walls.

• Keywords: graduation thesis, civil engineering, single-family house, building envelope, user behavior, fungi