Research on wind turbine rotor models using NACA profiles


VARDAR A. , ALİBAŞ İ.

RENEWABLE ENERGY, vol.33, no.7, pp.1721-1732, 2008 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 33 Issue: 7
  • Publication Date: 2008
  • Doi Number: 10.1016/j.renene.2007.07.009
  • Title of Journal : RENEWABLE ENERGY
  • Page Numbers: pp.1721-1732
  • Keywords: wind turbine, rotor, rotation number, power coefficient, tip speed ratio

Abstract

In this study, rotation rates and power coefficients of miniature wind turbine rotor models manufactured using NACA profiles were investigated. For this purpose, miniature rotor models with 310 mm diameter were made from "Balsa" wood. When all properties of rotor models were taken into account, a total of 180 various combinations were obtained. Each combination was coded with rotor form code. These model rotors were tested in a wind tunnel measurement system. Rotation rates for each rotor form were determined based on wind speed. Power coefficient values were calculated using power and tip speed rates of wind. Rotor models produced a rotation rate up to 3077 rpm, with a power coefficient rate tip to 0.425. Rotor models manufactured by using NACA 4412 profiles with 0 grade twisting angle, 5 grade blade angle, double blades had the highest rotation rate, while those manufactured by using NACA 4415 profiles with 0 grade twisting angle, 18 grade blade angle, 4 blades had the highest power coefficient. (c) 2007 Elsevier Ltd. All rights reserved.