by circulation or vortex formation

Full Title

Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations (hybrid wind-photovoltaic energy systems for the generation of electric power H02S10/12) > Wind motors specially adapted for installation in particular locations (means for mounting or supporting wind motors F03D13/20) > on stationary objects or on stationary man-made structures > within towers, e.g. using chimney effects > with means for enhancing the air flow within the tower, e.g. by heating > by circulation or vortex formation