Wind Lens Turbines in Multi Rotor Arrangement

Abstract

Wind lens turbines with its unique brimmed diffuser, are spaced closely together to investigate their interference on power output. Three wind lens turbines in a triangle array normal to smooth flow at variable spacing are operated and maximum power output is measured in comparison with each turbine in a stand-alone setup. We observed several interesting phenomena, like power drop at close spacing and power rise with increased spacing compared to the stand-alone setup. Further, we observed wide fluctuations of individual turbine power and used flow visualization to find out the reasons.