Author(s): Mathilde Cuchet; Franz Geiger; Albert Sepp; Peter Rutschmann
Linked Author(s): Peter Rutschmann
Keywords: No Keywords
Abstract: At the Technische Universit? t Munchen an innovative hydro power concept has been developed. It is meant to achieve cost-effective fish protection and efficient downstream migration. A series of experiments with live fish was conducted at a micro hydro shaft power plant site (2 m3/s, 30 kW) under controlled laboratory conditions to investigate the fish protection at the employed horizontal screen and to optimize the efficiency of the provided downstream migration corridor. The behavior of several hundred fish of different species and sizes were investigated by underwater video and the collection of the migrated and the not migrated fish. The results confirm the hydraulic dimensioning of the facility due to model test investigations, the functionality of the fish protection at the screen for all employed fish categories and the general workability and good acceptance of the fish downstream passage. Moreover they provide valuable species-and size-resolved details information about these points and the competitive analysis reveals that bottom near bypass system yields better efficiency than surface near ones under the given circumstances. The presented hydro power concept provides thus a verified and optimized fish protection and downstream migration.