DESIGN, MODEL, AND SIMULATION OF FRANCIS WATER TURBINE FOR BAKARU HYDROELECTRIC POWER PLANT WITH NETTO HEAD OF 322,1 M AND MAXIMUM DISCHARGE OF 22,5 M3/S

• Main Author: Christoper Maystro, Arnold
• Format: Final Project
• Language: Indonesia
• Subjects: Teknik (Rekayasa, enjinering dan kegiatan berkaitan)
• Online Access: https://digilib.itb.ac.id/gdl/view/47388

Nowadays, electricity consumption in Indonesia is always rising due to the increase of electricity access and changes in people’s lifestyle. But the electricity supply itself is still dominated with conventional energy resources such as oil and coal. The diminishing reserves of non-renewable energy sources have caused the Indonesian Government to prepare renewable energy resources to restore energy security in Indonesia. Water is one type of renewable resources that is planned to be used as the source of electricity. This undergraduate final project will discuss the main components in a hydroelectric powerplant, which is turbine. Numerical study has been done for hydroelectric Francis turbine. Data that being used are maximum discharge of 22.5 m3/s, the netto head 322.1 m, and rotation of 600 rpm. The simulation is performed to obtain the optimum output of the turbine. The aperture angle of the guide vane is varied to obtain the highest possible output power and efficiency. Based on simulations, the highest output power of 72.82 MW was obtained at the opening of the guide vane of 28o that produces discharge of 28.05 m3/s with efficiency of 86.7 %. While the best efficiency obtained was of 90.5 % at the opening of the guide vane of 16o that produces discharge of 18.83 m3/s with output power of 52.81 MW. Cavitation will occur at angle of 16 degrees at trailing edge and leading edge of the runner. Turbine must be planted submergely to overcome the cavitation problem.