General Discussion
In reply to the discussion: New Bladeless Wind Generators... [View all]Disaffected
(6,446 posts)generated by any wind turbine is directly related to the wind "swept area" or IOWs, the amount of wind that reacts with the turbine to produce power. If you want large swept area and therefore large power, you need large blades no matter what type of turbine it is. This precludes placing the turbines closely together as well as being close together results in shielding (from the wind) of the downwind units.
There is no free lunch in wind turbine design or deployment - all you can do is make the best of what technology is available and the three blade horizontal axis turbine, placed in appropriately windy locations, is the best we now have. There are no good reasons for going with anything different.
Also, I have no idea what good encasing the blades in a tube does. All it does AFAIK would be to introduce additional turbulence and frictional (i.e. wind velocity drop) losses.