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TRANSFORMATION OF A FIXED WEIR INTO A HYDRO-POWER FACILITY
Abstract
A technical design with an economic and energy analysis of transforming an existing water weir built in 1920 to create point-of-use water for the technological needs of a local sugar factory. Since the closure of the sugar factory, the weir has only served to stabilize the river bed. Conceptual discussions were carried out and a technical solution was proposed to convert the regulatory weir into an energy facility. Because of the small catchment area of 175.5 km2, the energy potential of this facility is low - with a gross drop of H=3.12 m, a characteristic flow of Q=0.46 m3/s (flow lasting from 8 to 9 months per year) and the raw power is about 14 kW. The above conditions make the construction of a small hydro-power plant on this site profitable only in the case of the installation of a cheap, simple turbine with low construction costs on the site (small-scale hydraulic engineering work). A set of equipment, including a water turbine, a pipe lever, an electricity generator and a vacuum system for automatic start-up of the turbine, has also been proposed. An analysis of the various turbine concepts has shown that the optimum solution for the analysed location is to install a high-speed tubular turbine in the lever system. Using the solution presented in the project, the estimated annual production of electricity for the proposed small hydro-power plant will be around 86.4 MWh.
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