Upon arrival, we were met by Mr. Čermák, the co-owner and technical manager. The students were informed about the origin of the idea to build a hydroelectric power plant with a maximum output of 600 kW and a specific drive using three Archimedean spirals on the site of the former Luční jezero. The rotational motion from the spirals is transmitted to the generator by means of a 1:82 gear train. The speed of the spirals is regulated by electronic control and level sensors located around the power plant's drive body to ensure a constant height of the water surface above the power plant. The power plant is in operation 24 hours a day. Due to the slow rotation of the spirals, the power plant is environmentally friendly (it is not noisy) as well as friendly to aquatic animals, especially fish. In addition, a water trough has been built in the power station area, which allows aquatic animals to swim from the low level below the power station to the upstream side of the power station.
The visit was very beneficial and we have agreed with the owner that we will visit again with our pupils in the future. The excursion ended with a walk back along the river to the school grounds.
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