engleski

Small Scale Archimedes Hydro Power Plant Test Station: Design and Experimental Investigation

This paper deals with the experimental investigation and design issues of a small Archimedes screw turbine (AST) hydropower test station. Variations of the inclination angle, water flow ratio as well as rotation speed/revolutions per minute (rpm) were experimentally examined with respect to the turbine power output, torque and efficiency. Besides the experimental approach, the design approach was also addressed in detail. The main outcome of the experimental work was related to the optimum working regime investigation for the AST. Testing was obtained for three different inclination angles, 21°, 25° and 30°, and results were compared with the two types of generators ; AC and DC generators. According to the experimental result, the maximal efficiency of the AST was found to be 64%, at an inclination angle of 21°, and with an associated water flow of 10 l/s. For the same previously specified conditions, the power output on the generator was about 35 W. It was also found that in order to achieve maximal power output on the generator (57 W), the AST requires an inclination angle of 30° and a water flow of 12.81 l/s. Based on the experimental findings, graphs were provided and addressed, related to the current, AC and DC generator voltages, AST losses and generator efficiency

Archimedes screw turbine ; renewable energy ; prototype ; experimental approach ; fluid dynamics ; hydrodynamics

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