The children's groups Bell and Key in TeTa Palace fall under the Human Resources Department of Prague City Hall. The project was designed by TaK architectural and engineering office and lights up the room with Huge luminaires with Human Centric Lighting technology. When set to automatic, the sensors adjust the luminaires to the colour temperature and intensity of daylight. The light in the classroom is then sufficient and natural for the whole day. Other options include presetting lighting modes for different activities and easily switching them, as needed, with adjustable intensity. White light (6500 K) is good for active work and concentration, yellow light (2700 K) for quieter activities.
"I can feel for myself how the light affects my performance. When the light is low, I want to sleep, my eyelids get heavy, I don't want to work and rather go home." This is how Mgr. Andrea Hájková, the director of the children's groups, described the effect of light.
"We manage comfort here holistically, connecting light with temperature and fresh air – both are set just right and above all are controlled automatically. There never comes the time when we say it's too dark, we must turn on the lights. We have the lights on from the beginning to the end of the day and have not observed any changes in the children's behavior. Only in intimate situations do we dim the lights – when the kids or colleagues are changing or we are getting the children dressed. This is mainly so they cannot be seen through the window," she added.