Vpliv sestave lesene stene na toplotno prevodnost, vlažnostni in temperaturni profil

Šauperl, Toni (avtor), Lesar, Boštjan (mentor)

Trenutne energetske razmere so opozorile na veliko potrebo po prenovi obstoječega gradbenega fonda. Na podlagi preteklih podatkov energetsko potratnih stavb smo določili dva najpogostejša konstrukcijska sklopa, ki se pojavljata v obstoječem gradbenem fondu. S pomočjo programa U – Wert smo nadgradili osnovna konstrukcijska sklopa z 8 različnimi konstrukcijskimi sklopi na osnovi lesa, ki bi jih lahko v celoti izdelali v tovarni in tako pripomogli k zmanjšanju energetskih izgub. U - Wert je omogočal analizo temperaturnega in vlažnostnega dogajanja v posameznem modelu. Na podlagi analize smo določili 4 konstrukcijske sklope, za katere smo izdelali fizične modele in jim izmerili toplotne karakteristike. Namestili smo jih na komoro, s katero smo simulirali zunanje pogoje (8 °C in 85 % RZV). Preko celotnega modela smo merili temperaturo, toplotni tok in vlažnost znotraj klima komore. Ugotovili smo, da je debelejša toplotna izolacija in model z več lesa vodil v večje dušenje temperature in posledično v manjši toplotni tok. Najvišjo temperaturno zakasnitev je imel konstrukcijski sklop s CLT ploščo (13,5 ur). Toplotni tok je skozi sredino modelov prehajal počasneje, kot ob straneh lesenega okvirja, kjer je bilo več lesa in posledično večja prevodnost. Ob primerjanju izmerjenih podatkov in simuliranih podatkov U – Wert-a smo ugotovili minimalna odstopanja. Vrednosti U – Wert-a so bile tudi nekoliko višje od dejanskih meritev. Predlagane rešitve bi lahko vključili za obnovo obstoječega gradbenega fonda, rešitve so posebej primerne za prenove večjih objektov.

• Jezik: Slovenski jezik
• Ključne besede: lesena stena, toplotne karakteristike, vlažnostni profil, energetska sanacija
• Vrsta gradiva: Magistrsko delo/naloga
• Tipologija: 2.09 - Magistrsko delo
• Organizacija: BF - Biotehniška fakulteta
• Kraj izida: Ljubljana
• Založnik: [T. Šauperl]
• Leto izida: 2022
• PID: 20.500.12556/RUL-140873
• UDK: 630*833.14:536.24
• COBISS.SI-ID: 123961859
• Datum objave v RUL: 21.09.2022

ŠAUPERL, Toni, 2022, Vpliv sestave lesene stene na toplotno prevodnost, vlažnostni in temperaturni profil [na spletu]. Magistrsko delo. Ljubljana : T. Šauperl. [Dostopano 5 maj 2025]. Pridobljeno s: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=slv&id=140873

Sekundarni jezik

• Jezik: Angleški jezik
• Naslov: Influence of wooden wall composition on the heat and moisture transfer

Izvleček

The current energy situation has highlighted the urgent need to renovate the existing building stock. Based on previous data on buildings with high energy consumption, we have identified the two most common assemblies that are frequently used. Using U-Wert, we upgraded the two basic assemblies with 8 different wood-based assemblies that can be fully manufactured in the factory and help reduce energy losses. U-Wert allowed the analysis of temperature and moisture development in each model. Based on the results, we identified four assemblies for which we created physical models and measured their thermal characteristics. They were mounted on a chamber simulating outdoor conditions (8 °C and 85% RH). Throughout the model, we measured the temperature, heat flux and humidity inside the air-conditioning chamber. We found that thicker insulation and a model with more wood resulted in higher temperature attenuation and consequently lower heat flux. The highest temperature lag was observed for assembly 3 with CLT panels (13.5 h). The heat flow was slower in the centre of the models than on the sides of the wood frame, where there was more wood and consequently more heat conduction. Comparing the measured data of the samples with the simulated U-Wert data, the deviations were minimal. The U-Wert values were also slightly higher than the actual measurements. The proposed solutions could be considered in the renovation of the building stock, and are particularly suitable for the renovation of larger buildings.

• Ključne besede: wood wall, thermal characteristics, moisture transfer, improving energy performance