“…Thus, in ordinary cases, if the window characteristics are chosen to achieve a certain function for the longest time, they may not be suitable for another function to be achieved with the same quality [3][16] [35]. The environmental functions of windows include internal thermal comfort, visual comfort, acoustical comfort, bio-physiological comfort, chemical comfort, safety, privacy, views, pollution and dust protection, ventilation, and energy conservation, besides energy production, when possible [17].…”