Performance tests of tornado-type wind turbine models
| Autor: | Ali Minachi, C.T. Hsu |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Engineering
Supersonic wind tunnel Wind gradient Meteorology Rankine vortex Aerospace Engineering Turbine Wind profile power law Hypersonic wind tunnel Physics::Atmospheric and Oceanic Physics Civil and Structural Engineering Wind tunnel Wind power Renewable Energy Sustainability and the Environment business.industry Mechanical Engineering Static pressure Mechanics Structural engineering Vortex Fuel Technology Space and Planetary Science Environmental science Dynamic pressure Tornado business Tower |
| Zdroj: | Journal of Propulsion and Power. 6:181-185 |
| ISSN: | 1533-3876 0748-4658 |
| DOI: | 10.2514/3.23242 |
| Popis: | Power coefficients (Cp) and pressure distributions in the vortex tower were measured for two Tornado-Type Wind Turbine (TTWT) models (one a circular-shaped tower; the other, a spiral) in a wind tunnel and in real environments. All the maximum Cp's measured were greater than one and ranged from 4.7 to 15.2 times the Betz limit of the conventional wind generators. These Cp's indicate that the TTWT machine is not only able to extract the total kinetic energy, but also part of the pressure (or internal) energy of the captured wind. The low pressure vortex core established in the wind tower can be maintained at a very low energy state for efficiently pumping the turbine's discharging flow. The static pressure drop from the ambient value measured at the vortex center of the tower ground floor ranged from 4.3 to 10.2 times the wind dynamic pressure when the turbine flows were plugged. Further improvement of Cp requires further vortex intensification and optimal geometric design. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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