Windturbine wake effects
report
The aim of this investigation, is to evaluate turbine wake effects on the power output of wind-turbine arrays in order to be able to determine the required array pattern and minimum distances between the turbines for the most efficient wind energy powerstation on a given ground area. For this purpose firstly the wake of a turning model of a Darrieus rotor has been investigated in a windtunnel. Thereupon a stationary object has been developed which simulates the found wake behaviour. Finally with a number of these stationary objects wake-interaction effects in arrays with different patterns and mutual distances have been investigated. The last experiments have been carried out in a windtunnel with a simulated atmospheric turbulent boundary layer. The power output of the stationary objects has been àetermined by measuring the wind force on them. It is shown that for a limited array an economically acceptable power output per . 2 unit ground area of about 9 W/m could be reached at a mutual distance of about 6 wind turbine diameters
Topics
TNO Identifier
248892
Publisher
TNO
Collation
74 p.
Place of publication
Apeldoorn
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