Reducing energy use and increasing the share of renewable energy use in the building sector are important measures to reduce Slovenia's energy dependence and greenhouse gas emissions. Energy use in buildings represents nearly 40 % of total energy use in the European Union, which indicates an extremely high energy saving potential. In accordance with the Sustainable Urban Strategy of the City of Ljubljana, the project "Renovation of Vila Zlatica" started in 2016. Its main goal is a complete renovation of the building with preservation of the original parts in a greatest possible extent, since the building is classified as a cultural heritage. Vila Zlatica represents a symbol of great cultural significance, also because it used to be a home of the former mayor of Ljubljana, Ivan Hribar. In my master thesis I am focusing on the analysis of possible energy measures applied to widnows/doors in the outer envelope of the building.
The first part of the thesis includes detailed measurements of the discussed building furniture elements. The second part of the thesis deals with the calculation of the thermal transmittance of windows/doors in their original state, as well as the description and analysis of various measures in order to improve their thermal properties. For the analysis of the thermal response I have chosen three different energy measures, the effect of which is compared with the thermal performance of the elements in their original state. Thermal transmittances of all the elements are calculated using the THERM 7.6 and WINDOW 7.6 programs in accordance with the ISO 10077-1 and ISO 10077-2 standards. In the third part of the paper, an analysis of the results of the thermal response of building furniture for various measures is presented. In the end, on the basis of the overall thermal response analysis of windows/doors and cultural protection restrictions, I proposed the final set of measures for the energy renovation of fenestration elements as a part of the entire project of the renovation of Vila Zlatica.