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Energies 2010, 3(4), 634-649; doi:10.3390/en3040634
Article

A Shrouded Wind Turbine Generating High Output Power with Wind-lens Technology

*  and
Research Institute for Applied Mechanics, Kyushu University/ Kasuga 816-8580, Japan
* Author to whom correspondence should be addressed.
Received: 20 January 2010 / Revised: 6 February 2010 / Accepted: 27 February 2010 / Published: 31 March 2010
(This article belongs to the Special Issue Wind Energy)

Abstract

We have developed a new wind turbine system that consists of a diffuser shroud with a broad-ring brim at the exit periphery and a wind turbine inside it. The shrouded wind turbine with a brimmed diffuser has demonstrated power augmentation by a factor of about 2–5 compared with a bare wind turbine, for a given turbine diameter and wind speed. This is because a low-pressure region, due to a strong vortex formation behind the broad brim, draws more mass flow to the wind turbine inside the diffuser shroud.
Keywords: wind turbine; diffuser; brim; power augmentation; wind tunnel experiment wind turbine; diffuser; brim; power augmentation; wind tunnel experiment
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Ohya, Y.; Karasudani, T. A Shrouded Wind Turbine Generating High Output Power with Wind-lens Technology. Energies 2010, 3, 634-649.

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