Abstract
The subject of the study presents the measurement of temperatures on surfaces of glass systems of existing structures and the surfaces of experimental glass systems obtained by dynamic simulation. Measurements were made in the test cells of the Faculty of Civil Engineering of the Technical University of Košice. The partial results of which are the basis for the comparison of the currently installed and experimentally designed glass systems using spectrally selective films. The proposed mathematical-physical model was simplified by replacing the sash, frame and its components with a homogenous element with minimal shape modifications, while this does not have a significant effect on the simulation results. The choice of the proposed glass system respects the need for reduction of solar gains in summer and heat losses in buildings in winter through the weakest part of the building envelope and indicates future energy savings in relation to cooling and heating costs with a view to optimizing light and thermal comfort.
Highlights
Windows, despite the trend of improving their thermaloptical properties, are still the weakest part of the building and allow up to 40% of the building's total energy losses [1, 2]
How significant is the change of window parameters? Are the resulting properties desirable? The provable influence of selective layers can be used in the design of new progressive glass systems whose heat transfer coefficient could be an approach to the improvement of external wall properties
This study provides insight into the behaviour of the window structure before and after replacing the glass system
Summary
Despite the trend of improving their thermaloptical properties, are still the weakest part of the building and allow up to 40% of the building's total energy losses [1, 2]. For this reason, it is essential to replace the low energy efficient window with a smart, more energy efficient and adaptable glazing [3, 4, 5, 6]. The aim of the study is to determine if added window film can change the energy-optical-thermal insulation properties of the selected glazing. Dynamic simulations applying measured data [12] or a reference year [13], are best suited for verifying the properties of structures over the investigated period
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