The information from this thread is taken and combined with other interesting information (relatively numerous references) to form a new preprint (yet another one!):
Savonius kite turbine: DOI: 10.13140/RG.2.2.23434.27849
Several scales are aimed. It would be an AWE toy, or an individual AWES, or perhaps for utiity-scale.
Photovoltaic panels could cover what can be covered. The electricity would then be carried by the two cables located at the ends of the rotor and on its axis.
The sketch of the preprint (see the publication on reference 9 (link below) about “the wavy area” to increase efficiency, page 3, and figures 3 and 4):
Publication on reference 9:
Some key points:
Figure 1. Benefit categories for Savonius wind turbine efficiency.
Page 3 of the PDF:
The novelty of this work consists in the adjustment of the wavy area positions along the concave and convex blades and the further addition of a flow guide channel with different angles to the wavy blade profile. This method does not need a complex fabrication process; therefore, it can reduce the device’s production costs and be performed in actual conditions.
Figure 3. S-ORM geometry employed in the computational and experimental models with H/D = 1, e = D/5 = d/3 ≈ 0.2, and BLN = 2.
Figure 4. Rotor cross-sections of benchmark model and modified profiles.
Figure 13. Cpmax values obtained from analysis of different blade profiles.
Other parameters are investigated.