RANCANG BANGUN TURBIN AIR ALIRAN MELINTANG DENGAN VARIASI SUDUT SUDU MASUK UNTUK MENDAPATKAN EFISIENSI YANG MAKSIMUM

The study designed the crossflow water turbine runner by using material paralon (PVC), which compare variation in the angle of inlet runner 20 °, 30 °, 40 ° to get maximum efficiency. This testing using test equipment the laboratory or micro hydro power plant PLTMH to utilize renewable energy sourced from water capacity 7 litres per second with the source water from a pump with water velocity 0.9 m/s. Turbine diameter of 20 cm, the number of runner 10 pieces. The results of testing for variations of the angle of the runner of turbine power generating 20 ° and rotation of each turbine 2.9 Watt, 213 rpm, as well as the efficiency of 6.3%. The test results for the variation of angle 30 ° runner of turbine power generating and round each turbine 4.4 Watts, 221 rpm, as well as the efficiency of 9.6%. The test results for the variation of angle of 40 ° power produces turbine vanes and round each turbine 5.4235 Watts, rpm, as well as the efficiency of 11.8%. The greater the angle of the vanes are used, then the greater power and efficiency are also produced. This happens because the greater the angle of the vanes more mass then water enters the runner turbine, then the faster the runner spin.