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                                          4 kW WINDFLOWER (Risoe approved)
Rotor diameter 3.8 m. Very high rotor efficiency, Cp-max = 0.47 measured. At 4 m/s average wind speed the annual energy production is 3.500 kWh, at 8 m/s it is 8.500 kWh. Seven samples of this induction generator based concept has been sold. Now the project is stalling, awaiting test results from the new 1 kW Windflower and some new microturbines. 
 

 

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