Novel Views on the Extraction of Energy From Wind: Heat Generation and Terrain Concentration

Topics:
Civil and Environmental
Tags:
Energy,
Energy Research Centre Of The Netherlands,
Telecom & Utilities,
Turbine
Source:
Energy research Centre of the Netherlands

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Overview: This paper shows that an actuator disk operating in wind turbine mode extracts more energy from the fluid than can be transferred into useful energy. At the Lanchester-Betz limit the decrease of the kinetic energy in the wind is converted by 2/3 into useful power and by 1/3 into heat. Behind the wind turbine the outer flow and the flow that has passed the actuator disk will mix. In this process momentum is conserved but part of the kinetic energy will dissipate in heat via viscous shear.

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Format: PDF | Size: 167KB | Date: Sep 2001 | Pages: 5

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