vertical wind turbines

[Fritz]

http://earthtechling.com/2011/07/vertica...ost-power/

[Speedy]

Uh-huh, just wait until they build them taller and they blow all our atmosphere into outer space.

[OWC Jamie]

Noticed lots and lots of those being installed in parking lots on the existing light poles last time I was in Italy.

[Black]

billb wrote:
Noticed lots and lots of those being installed in parking lots on the existing light poles last time I was in Italy.

We've got a number of them installed on parkways and parking lot perimeters around Chicago.

Is this something we may see on roofs eventually?

[Speedy]

Black wrote:
Is this something we may see on roofs eventually?

Already has been done for years.

[cbelt3]

Excellent !

FWIW: Rooftop installation probably requires a stronger structure than the average building will provide. While they are less stressful than the HAWT design, they still reflect a big torque load on their mounting, and a vibration environment. I say this without any experience in VWT's, but experience in radar antenna servomechanism design.

[Speedy]

cbelt3 wrote:
Excellent !

FWIW: Rooftop installation probably requires a stronger structure than the average building will provide. While they are less stressful than the HAWT design, they still reflect a big torque load on their mounting, and a vibration environment. I say this without any experience in VWT's, but experience in radar antenna servomechanism design.

The rooftop ones I've seen are only a handful of feet tall.

[Black]

Speedy wrote:
[quote=cbelt3]
Excellent !

FWIW: Rooftop installation probably requires a stronger structure than the average building will provide. While they are less stressful than the HAWT design, they still reflect a big torque load on their mounting, and a vibration environment. I say this without any experience in VWT's, but experience in radar antenna servomechanism design.

The rooftop ones I've seen are only a handful of feet tall.
Yes, I assumed we'd be talking about something more miniature.
I wonder how much juice a garage roof packed full of these could produce and/or how it compares to solar on a square foot basis.

[ztirffritz]

From 2009:

http://youtu.be/Ax68TVYHRBU

[Black]

At this point in the discussion one must conclude that people with fritz in their name are partial to wind turbines.