## 3 Results
#### 3.1.1 Indoor Temperatures  
The on-site measurements show that the mean indoor operating temperatures in the dwelling without a \"glass curtain\" system in winter are below 21 \({}^{\circ}\)C for about 45.8% of the days measured throughout the year (Figure 6). The temperatures are below 19 \({}^{\circ}\)C for about 20.8% of the days measured. However, the measurements show that the mean indoor operating temperatures with the \"glass curtain\" system closed in winter are above 21 \({}^{\circ}\)C every measured day. The computer simulations show that the mean indoor operating temperatures without the \"glass curtain\" system in winter are below 21 \({}^{\circ}\)C for about 45.2% of the year (equivalent to 3960 h). The temperatures are below 19 \({}^{\circ}\)C for about 27.1% of the year (equivalent to 2374 h). However, the measurements show that the mean indoor operating temperatures with the \"glass curtain\" system closed in winter are below 21 \({}^{\circ}\)C for about 10.8% of the year (equivalent to 946 h). Th temperatures are below 19 \({}^{\circ}\)C for about 3.3% of the year (equivalent to 289 h). The results of the on-site measurements were compared with the results of the computer simulations for the validation of the software. They have very similar results. This enables us to validate the simulation tool's calculations. The computer simulations show larger thermal oscillations because they calculate the temperatures for every hour of the day.  
In the coldest weeks of winter, the indoor mean operating temperatures are almost 4 \({}^{\circ}\)C higher with the \"glass curtain\" system closed than without it. In summer, the indoor temperatures are the same in both cases because the \"glass curtain\" remains retracted and opened.  
The on-site measurements of the indoor temperatures in winter, depending on the location inside the dwelling, show that the indoor temperatures increase in all the rooms of the dwelling with the \"glass curtain\" system closed. The mean indoor operating temperatures increase by up to 6 \({}^{\circ}\)C in rooms close to the glazed terrace and by about 1 \({}^{\circ}\)C in rooms away from the glazed terrace (Figure 7 and Table 5).  
\begin{table}
\begin{tabular}{c c c c c} \hline
**Parameter** & & & & **Applicable Regulation** \\ \hline  & Type of control & Thermal property & Geometric property & \\  & & Emissivity & Distance to glass & \\ Window shading & Indoor air temperature. & 0.20 & 15 cm & DB-HE [57] \\ \hline \end{tabular}
\end{table}
Table 4: Parameters of the computer calculations.  
Figure 6: On-site measurements and computer simulation measures of the mean operating temperatures inside the dwelling: with he “glass curtain” system closed in winter and without it.  
Figure 7: Distribution of the on-site measurements of the mean indoor temperatures, depending on the location inside the dwelling, at 14:00 h in the extreme winter week (3–7 January): (**a**) without a “glass curtain” system and (**b**) with a “glass curtain” system closed.  
\begin{table}
\begin{tabular}{c c c}  & **Dry Bulb Air Temperature (\({}^{\circ}\)C)** & **Operating Temperature (\({}^{\circ}\)C)** \\  & **(Max–Min/Average/Difference)** & **(Max–Min/Average/Difference)** \\ \hline Without “glass curtain” & 21.0–15.5/18.3/5.5 & 22.1–14.9/18.5/7.2 \\ With “glass curtain” closed & 27.1–16.2/21.7/10.9 & 28.2–15.7/21.9/12.5 \\ \end{tabular}
\end{table}
Table 5: Summary table of the on-site measurements of the indoor temperatures, depending on the location inside the dwelling, at 14:00 h in the extreme winter week (3–7 January) with the “glass curtain” system closed and without it.