The effect of the additional baffle plate on vortex turbine performance.

A vortex turbine is a machine that converts energy from water potential energy to mechanical energy stored by a generator. One of the components having by a turbine is the rotor (blades). Rotor is defined as the moving component of power generation systems. Specifically, water that rotates through the cylinder basin makes the turbine works under the momentum energy stored by water. The works generated by the turbine have some value on torque, mechanical power and efficiency. The study aims to determine the effect of additional baffle plates on the Vortex turbine performance. Four specimens are used, including without additional baffles, additional upper baffles, additional lower baffles, and additional double baffles. Study was conducted on low-speed water tunnels using three variations on discharges about 11×10⁻³ m³/s, 12×10⁻³ m³/s and 13×10⁻³ m³/s. The result proved that an additional baffle plate on the vortex turbine changes the performance result. Additional double baffle reached the best performance at 30.70 Watt of mechanical power, 1.24 Nm of torque and 27.20% of efficiency. [ABSTRACT FROM AUTHOR]