## 6 Results
### Thermal Comfort of the Existing State  
Figure 4a illustrates the location of the office within the facility, positioned in the northwest section. The office spans an area of 25 m\({}^{2}\) and has a volume of 87.5 m\({}^{3}\). The exterior wall has a surface area of 17.5 m\({}^{2}\), while the glazed opening area measures 12.5 m\({}^{2}\). On 10 July at 18:30, the temperature in the northwest office reaches 31.6 \({}^{\circ}\)C, which is above the acceptable maximum of 26 \({}^{\circ}\)C for office spaces within the sports building. Conversely, the lowest temperature in the office is recorded on January 18 th at 06:30, just before the heating system activates, and is below freezing. During the summer, the temperature exceeds 26 \({}^{\circ}\)C only 6.5% of the time, which is considered very satisfactory. Figure 5 depicts the variations in annual air temperature in the office space (Figure 5a) and the temperature profile for the hottest day of the year, 10 July (Figure 5b). In the observed space, the minimum lighting level is 264.2 lux, while the maximum is 3000 lux (Figure 6). Curtains that are already installed are necessary. Figure 4: Position of the office space (**a**) and universal hall (**b**) for comfort analysis. Figure 5: Air temperature in the northwest office of the SC2 model over the course of a year (**a**) and on the day when the temperature reaches its highest value (**b**). During the winter period, the comfort index for the administration's working hours ranges between 4 and 5, indicating an acceptably cool environment. Throughout the winter, 72% of the time spent in the office has a comfort index below 6. In contrast, during the summer, the comfort index varies from 7 to 10, with 7 and 8 representing a pleasant condition and 9 and 10 indicating an acceptably warm environment. At 14.8% of the time, the comfort index exceeds 8. Figure 7 shows the fluctuations in the comfort index throughout the year (Figure 7a) and the annual percentage distribution of these values (Figure 7b). It is necessary to analyze comfort for universal sport hall separately, keeping in mind that this space represent different thermal zones. Figure 4b illustrates the location of the hall within the facility. The hall covers an area of 2395.4 m\({}^{2}\), with a volume of 21,747.5 m\({}^{3}\). The exterior wall surface area is 884.1 m\({}^{2}\), and the area of the openings is 460.4 m\({}^{2}\). In the model, the universal sports hall peaks at 31.1 \({}^{\circ}\)C on 11 July at 17:30. Throughout 41% of the hall's total occupancy hours, the air temperature exceeds 16 \({}^{\circ}\)C, which is the lower limit used for simulating conditions during the heating period. This is deemed highly unfavorable for sports activities. The lowest recorded temperature of 2 \({}^{\circ}\)C occurs on 25 December (see Figure 8). Figure 6: Lighting in the office of the SC2 model; (**a**) lighting during the day; (**b**) values of DF, FlucsDL; (**c**) day lighting analysis in perspective, day lighting analysis, RadianceIES, IES VE. Figure 7: Comfort index for the administration office (**a**) annually; (**b**) percentage per year. At the SC2 Center's universal sports hall, nearly the entire playing area is illuminated with lighting levels between 300 and 500 lux, which is optimal for both recreational and professional sports activities. The highest illumination level, reaching 700 lux, is found along the perimeter of the playing area (refer to Figure 9). During the winter, the comfort index in the hall ranges from 3 to 4, reflecting conditions from uncomfortably cold to pleasantly cool. In the summer, the index ranges from 7 to 9, indicating from pleasant to moderately warm conditions. For 73.2% of the time spent in the hall, the comfort index is below 6, signifying conditions that range from uncomfortably cold to cool. Approximately 21.4% of the time is considered comfortable, while only 8% of the summer hours are moderately warm. The comfort index exceeds 8 for just 5.4% of the total hours in the space (see Figure 10).