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No why would wind want go down that silly tube when it could go around it more easily?
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Some of the wind is always going to go around, same with a regular wind turbine prop, it all depends on how much resistance there is, that is why there is a finite about of energy that you can collect out of the wind, if you could collect 100% of the energy then you could have wind go in and still air exit... and that doesn't work.
The collector is the part up in the air, on a regular wind turbine the collector is the prop/propeller, on this one it's the scoop, if you were to put a funnel around a regular wind turbine prop then the opening of that funnel is the collector size, those turbines between two buildings use the buildings to increase the collector size, the draw back of course is that they impose their own limitations, like not being able to turn with the winds changing direction.
There have been a lot of sketchy wind companies that have "new" ideas that skew their facts to draw in investors.