Effect of Archimedes Screw Turbine Shaft Inclination on Output Power

Abstract

Rivers have enormous potential as a source of renewable energy. This potential is very abundant because there are so many rivers and irrigation canals that have a fairly large discharge. However, this irrigation channel has a low height, so it is necessary to select the suitable type of turbine if it is built for power generation. Archimedes screw turbine is the right choice for this condition, there are even several studies that exploit horizontal flow by using this Archimedes screw turbine to generate electricity. So that, this type of turbine is very suitable for power plant applications in Indonesia, where there are many low-altitude irrigation channels. There are several parameters that affect the electrical energy output produced by this screw turbine, among others; the outer and inner radius of the blade, the number of blades, the pitch, the amount of water flow, and also the angle of inclination of the screw turbine shaft. The purpose of this research is to find the appropriate angle parameters so as to produce maximum outputs. The variation of inclination angle which applied in this experiment are 30 0 , 60 0 and 90 0 . The inclination angle of the shaft that produces the greatest outputs from the research results is 60 0 with the outputs of power = 38.7 watts, voltage = 8.78 V, electric current = 4.41 A, and screw rotation = 210 rpm.