Window frame materials and window size: parameters that influence energy efficiency in buldings

Abstract
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When it comes to finding a suitable closing for the openings on the building envelope, the choice of proper windows and doors is crucial because it directly affects the energy gain and loss and consequently also the costs. This paper aims to demonstrate how the window design, in terms of material and size, significantly affects the climatic conditions inside the building, such as temperature, humidity, light, and the quality of living in the space. A combination of quantitative and qualitative methods will be used to conduct the research. Data collection and analysis have been done for aluminium and PVC-U window types. To perform data analysis, the collected data were used for description and comparison. Qualitative analysis can reveal the efficient window property and demonstrate the difference using a deductive method. The heat transfer analysis will be performed using the software Winiso combined with SchuCal version 2020 R2. The test results are presented in the form of tables and diagrams, and explained additionally.
Key words: Thermal transmittance, U-values, Aluminium windows, Vinyl (PVC-U) windows, Window frames, Window size

References
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Corresponding Author
Alma Hudovic Kljuno,
Program of Architecture,
Faculty of Engineering and Natural Sciences,
International University of Sarajevo,
Sarajevo,
Bosnia and Herzegovina,
E-mail: ahudovic@ius.edu.ba