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Wind Turbines Coming to a City Near You

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pnadams
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Iron
Re: Done before...
pnadams   4/25/2013 1:51:47 PM
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Can you post a link or URL?

William K.
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Platinum
Where are the turbines in the picture?
William K.   4/25/2013 4:41:49 PM
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If the wind turbine is a horizontal axis device that looks a bit like a centifugal blower, then it certainly would be much less visible, and it might be less efficient as well. But wind is free, it is only the ROI that pushes for capturing the very most energy possible, disregarding appearance end everything else. A horizontal axis barrel-shaped turbine could be supported on both ends, making the structure easier to design, and allowing for a simpler suport arrangement. In addition there is that very real effect of tall buildings channeling the wind into high speed jetstreams, which might be used to an advantage in this application. 

But the very biggest advantage would be that the energy is being recovered in the area where it is needed, which would reduce the transport costs a lot.

Debera Harward
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Silver
Re: Where are the turbines in the picture?
Debera Harward   4/25/2013 5:48:29 PM
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William , Everything agreed but what i think is there will be one drawback i.e absence of wind,It wont be able to produce energy in the areas where there is no wind ,This technology is usefull for only places where there is lot of wind

Debera Harward
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Silver
Re: Where are the turbines in the picture?
Debera Harward   4/25/2013 5:48:35 PM
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William , Everything agreed but what i think is there will be one drawback i.e absence of wind,It wont be able to produce energy in the areas where there is no wind ,This technology is usefull for only places where there is lot of wind

William K.
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Platinum
Re: Where are the turbines in the picture?
William K.   4/25/2013 6:59:21 PM
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Debera, you are certainly correct that if there is no wind then there is no energy capture. But I have found that on many occasions there is more wind up a couple of hundred feet than there is at ground level, which would seem to be a special case of the coanda effect coupled with laminar flow theory. BUT if there really is no wind, then the wind turbines would indeed be useless and a waste of resources. A really cheap check, which would educate the public as well as provide good information, would be to hange streamers from the areas where the wind turbines are proposed to be installed. If the streamers were always flying then there is wind, but if the streamers were never flying then the wind is simply not there. Cheap instrumentation indeed.

Charles Murray
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Blogger
Re: Where are the turbines in the picture?
Charles Murray   4/25/2013 9:11:31 PM
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I agree that there seems to be more wind up high, William K. My information is purely anecdotal, but I was once up Chicago's Sears Tower (now called Willis Tower) and watched as a hanging ceiling fixture "swung" back and forth in an office on the 70th floor. It was explained to me that the hanging lamp often appeared to be swinging, when in fact it was not really moving at all. The truth was that the building was swaying and the hanging lamp was standing still. It takes quite a bit of wind to accomplish that. It probably doesn't prove much, but it's a good story, and it's true.

Elizabeth M
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Blogger
Re: Done before...
Elizabeth M   4/26/2013 5:30:54 AM
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I didn't know about that pnadams, thanks for the information. I will do some research. As this PowerWINDows technology is still in its early stages, perhaps there is some twist on the technology that can make it work. I think it's too early to tell.

Elizabeth M
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Blogger
Re: Concrete Canyons
Elizabeth M   4/26/2013 5:47:39 AM
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That is something I didn't think of, DB, but that could be a really good use of this technology, considering how some streets are like wind tunnels. I had a lot of experience with this phenomenon when I lived in NYC. I'm not sure, however, where the best place would be to put the technology, though. Although I'm sure that could be worked out by much more intelligent people than me.

Elizabeth M
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Blogger
Re: Where are the turbines in the picture?
Elizabeth M   4/26/2013 5:51:11 AM
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Interesting, Chuck. I think this also is meant to be used up high on top of buildings as well, which I think I mentioned in the story. So it would be able to take advantage of the wind up there. Probably both the building and the PowerWINDows installation would both be moving, which I think the engineers would have to take into consideration when they install it.

Charles Murray
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Blogger
Re: Where are the turbines in the picture?
Charles Murray   4/26/2013 6:25:45 PM
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I do believe that the wind currents can also be tremendous between buildings, Liz. I know there have been cases where the low-prssure effects of wind currents between tall buildings have actually sucked glass panels from the exteriors of office buildings.

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