 Partially-blocked savonius rotorB.M. Shaughnessy and S.D. Probert Applied Energy, 1992, vol. 43, issue 4, 239-249 Abstract: A Savonius rotor can develop a relatively high torque at a low rotational speed. It is cheap to build, but harnesses only a small fraction of the wind energy incident upon it. One proposal for augmenting the energy-harnessing effectiveness was to employ a V-shaped deflector mounted upstream of the rotor, apex into the wind, so that the air-flow resistance encountered by the half of the wind-turbine blade advancing (i.e. moving) into the wind was reduced. By (i) carrying out experimental tests with the deflector in different positions relative to the rotor, and (ii) varying the wedge angle between the deflector blades, an optimal configuration for the particular system tested was determined. With the optimally pitched deflector set at its optimal location, the rotor harnessed about 20% more power, compared with the unblocked (i.e. standard) rotor both for an approximate wind speed of 4 ms-1. Such a significant improvement, achieved by this simple cheap means, suggests that the use of the partially blocking wedge is highly desirable. Date: 1992 Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:43:y:1992:i:4:p:239-249 Ordering information: This journal article can be ordered from Access Statistics for this article Applied Energy is currently edited by J. Yan More articles in Applied Energy from Elsevier |
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