| Abstrakt: |
Wind turbine is a device used to convert the kinetic energy of the wind into electrical energy. Before it becomes electrical energy, kinetic energy will go through the wind turbine section, namely the blade, to be converted into mechanical energy. This study aimed to focus on the blade with tapperless type designed as same chord from the tip of the base to the tip of the blade. The radius of the blade used is 0.80 m with a chord width of 0.12 m. In the blade there is a cross section of this blade configured as airfoil which has a function to create a lift force that is greater than the drag force. The airfoils used are MH 115, DAE 31 and NREL's S802, each of which has a lift coefficient (cl)/coefficient drag (cd) 57.5, 52 and 58.5. To do the design and analysis is done on Blade. Design result data on Ms. Excel is analyzed in QBlade and gets the results in the form of graphs of Torque to RPM, Power to RPM and Coefficient Power (cp) to Tip Speed Ratio (TSR). In the analysis on this software, the MH 115 airfoil is the most efficient compared to the other 2 with an efficiency reaching 48% at TSR 4 and can produce power of 303Watt at 382RPM. Meanwhile, in direct testing in wind turbines, the largest power generation is NREL's S802 airfoil with a result of 182.13Wh. [ABSTRACT FROM AUTHOR] |
