Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
AERODYNAMIC DESIGN ANALYSIS OF A HYBRID VERTICAL WIND TURBINE FOR DECENTRALIZED POWER GENERATION
Submission Author:
João Vicente Akwa , SP
Co-Authors:
Carlos Eduardo Guex Falcão, João Vicente Akwa
Presenter: João Vicente Akwa
doi://10.26678/ABCM.COBEM2017.COB17-0099
Abstract
This work presents an aerodynamic analysis of a hybrid Darrieus/Savonius turbine. Performance characteristics and power curves of a pure Darrieus turbine are obtained by means of the Multiple Streamtubes Theory, which equals the forces on the aerodynamic profiles to the forces arising from the rate of change in flow momentum. To evaluate the performance in conjunction with the Savonius rotor, the torque and power curves obtained for the Darrieus turbine are combined with the classical curves of the chosen Savonius configuration, which are present in the literature. The method of operation of the hybrid turbine was obtained for dimensions suitable for microgeneration. This turbine presents a power coefficient of 0.49, slightly higher than the traditional Darrieus turbine, which presents a power coefficient of 0.43. Maximum efficiency occurs at 717.1 rpm considering a uniform airflow velocity of 10.75 m/s, which provides a mechanical power of 361.4 W.
Keywords
Darrieus, Savonius, Hybrid, Multiple Streamtubes
