Investigation on the micro hydropower undershot type floating blade tilt angle for low-flow hydropower

Abstract

Many rivers or streams of water around us can be used for energy. River flow is very promising to be utilized as much as possible in producing electricity. Potential energy from small river fluid flow or irrigation can be extracted into electricity that can be utilized. This research can be used as one of the references in varying the angle of inclination at the blades at 15º, 30º, and 45º. From the analysis of experimental results, the greatest efficiency obtained is 11.14% with an angle of 30ºwith turbine power of 104.62 watts. This is followed by the lowest efficiency at a slope angle of 45ºwith turbine power of 111.49 watts with an efficiency of 10.73%. From the highest and lowest results there is a slight difference in the value of efficiency which is classified as low. This is caused by differences in density causing water to pound on the blades made of acrylic with an iron frame to become heavy and friction on the v-belt and pully. Therefore, the rotation cannot produce the maximum transmission.