MODELING AND NUMERICAL SIMULATION OF PUMP-TURBINE SYSTEM INTEGRATED TO DAM WATERGATE

• Main Author: EKA PRANA (NIM : 23106013); Pembimbing : DR. Ir. Hendrawan, YUSMAN
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/17701
• Institution: Institut Teknologi Bandung

Up to this time there's no research about PLTM, that's able to use the energy from a flowing water down stream a dam, with PLTM characteristics that are able to serve a certain head and debit in the event of flood, either the values are medium or low, which comply with acceptable operating standard. The available river needs a specific blade <br /> <br /> <br /> design, and probably a turbine-pump configuration, thus in the event of flood the turbine works perfectly. <br /> <br /> <br /> This research is using low head axial turbine design which had been designed before by former researcher, after that simulation with CFD software is conducted for various flow <br /> <br /> <br /> rate and head , thus the turbine operation characteristics are acquired. Based on the simulation results an axial pump will be placed in the turbine intake, the turbine is <br /> <br /> <br /> designed with one shaft, embedded in one chasing becoming a pump-turbine system. With the availibility of this pump it's expected when the flood happens, the water flow <br /> <br /> <br /> rate into the turbine becomes higher, as a result the surface level at the gate will be lowered. <br /> <br /> <br /> From the simulation, the highest turbine efficiency is 84% achieved at flow rate 0,601 m3/s and power 15,91kW, blade angle and runner angle configuration conform to the design.The pump highest efficiency is 79,9% achieved at blade angle of rotation 5o and runner angle 10o from design point of view and requires 17,2 kW of power. With the <br /> <br /> <br /> pump-turbine combination, the highest turbine efficiency is 78% with nett power 8,47 kW after the pump power is compensated.