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Study on torsion arc blade type horizontal axis wind turbine; Nejire enko yokugata suihei jiku fusha ni kansuru kenkyu

Abstract

Discussing the rotor blades of the torsion arc blade type (TABT) wind turbine, difference in windmilling characteristics was determined between elliptic blades and rectangular blades by theoretical analysis and model experiment. Experimental generation of power was carried out using a test wind turbine in the natural wind. First, elliptic blades were bent into arcs and fixed to shaft. The action force was determined calculating the blade area and the wind velocity vertical thereto. Furthermore, the force in the direction to turn the rotor was determined with the effect of the part behind the blade taken into account. The rotation-curbing air resistance in the flank direction that a rotor experiences was subtracted to determine the torque generated. A formula was derived for the elliptic blade. Second, a formula was derived in the same way for the case of rectangular blades. In conclusion, in the case of 6-blade wind turbine, the rate of responsibility for wind turbine rotation of the part behind the blade was approximately 50% of the part in front of the blade. Shape coefficients were introduced into the theory, which resulted in values agreeing well with values obtained from experiments. Elliptic blades yielded more power than rectangular blades at  More>>
Authors:
Kojima, N; Kishimura, K [1] 
  1. Meiji University, Tokyo (Japan)
Publication Date:
Oct 27, 1996
Product Type:
Conference
Report Number:
CONF-9610295-
Reference Number:
SCA: 170602; PA: NEDO-96:915485; EDB-97:072210; SN: 97001783029
Resource Relation:
Conference: JSES/JWEA joint conference (1996), 1996 nendo nihon taiyo energy gakkai nihon furyoku energy kyokai godo kenkyu happyokai, Yamagata (Japan), 31 Oct - 1 Nov 1996; Other Information: PBD: 27 Oct 1996; Related Information: Is Part Of Proceedings of JSES/JWEA Joint Conference (1996); PB: 406 p.; Taiyo/furyoku energy koen ronbunshu (1996)
Subject:
17 WIND ENERGY; WIND TURBINES; PERFORMANCE; HORIZONTAL AXIS TURBINES; TURBINE BLADES; CIRCULAR CONFIGURATION; INCLINATION; ELLIPTICAL CONFIGURATION; RECTANGULAR CONFIGURATION; WIND LOADS; DRAG; AERODYNAMICS; TORQUE; POWER GENERATION; SERVICE LIFE
OSTI ID:
472778
Research Organizations:
Japan Solar Energy Society, Tokyo (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE97744185; TRN: 96:915485
Availability:
Available from Japan Solar Energy Society, 44-14, Yoyogi 2-chome, Shibuya-ku, Tokyo, Japan; OSTI as DE97744185
Submitting Site:
NEDO
Size:
pp. 221-224
Announcement Date:

Citation Formats

Kojima, N, and Kishimura, K. Study on torsion arc blade type horizontal axis wind turbine; Nejire enko yokugata suihei jiku fusha ni kansuru kenkyu. Japan: N. p., 1996. Web.
Kojima, N, & Kishimura, K. Study on torsion arc blade type horizontal axis wind turbine; Nejire enko yokugata suihei jiku fusha ni kansuru kenkyu. Japan.
Kojima, N, and Kishimura, K. 1996. "Study on torsion arc blade type horizontal axis wind turbine; Nejire enko yokugata suihei jiku fusha ni kansuru kenkyu." Japan.
@misc{etde_472778,
title = {Study on torsion arc blade type horizontal axis wind turbine; Nejire enko yokugata suihei jiku fusha ni kansuru kenkyu}
author = {Kojima, N, and Kishimura, K}
abstractNote = {Discussing the rotor blades of the torsion arc blade type (TABT) wind turbine, difference in windmilling characteristics was determined between elliptic blades and rectangular blades by theoretical analysis and model experiment. Experimental generation of power was carried out using a test wind turbine in the natural wind. First, elliptic blades were bent into arcs and fixed to shaft. The action force was determined calculating the blade area and the wind velocity vertical thereto. Furthermore, the force in the direction to turn the rotor was determined with the effect of the part behind the blade taken into account. The rotation-curbing air resistance in the flank direction that a rotor experiences was subtracted to determine the torque generated. A formula was derived for the elliptic blade. Second, a formula was derived in the same way for the case of rectangular blades. In conclusion, in the case of 6-blade wind turbine, the rate of responsibility for wind turbine rotation of the part behind the blade was approximately 50% of the part in front of the blade. Shape coefficients were introduced into the theory, which resulted in values agreeing well with values obtained from experiments. Elliptic blades yielded more power than rectangular blades at the same wind velocity. High in durability, the TABT wind turbine is expected to be put into practical use as a compact auxiliary power generating device. 2 refs., 14 figs.}
place = {Japan}
year = {1996}
month = {Oct}
}