VAWT

[HansC]

This one/type seems possible for DIY and works at low windspeeds:
http://www.instructables.com/id/Vertical-Axis-Wind-Turbine/

Or a small version of this:
http://windgeneratorplans.alternativeenergyguru.com/2012/03/01/spiral-shaped-wind-turbine-2/

Hans

[Ed Borden]

Interesting note in the comments, probably applicable to other designs
as well:
"Another advantage that was claimed about this design is that in urban
envirnments with buildings and trees that low level winds are very
turbulant and constantly changing direction. traditional blade designs
can't handle this low level turbilance which is why they're mounted up
high on poles so they can catch clean air, but this design can be
mounted at ground level with no loss of efficiency."

On May 7, 12:00 pm, HansC <simplrt...@gmail.com> wrote:
> This one/type seems possible for DIY and works at low windspeeds:http://www.instructables.com/id/Vertical-Axis-Wind-Turbine/
>

> Or a small version of this:http://windgeneratorplans.alternativeenergyguru.com/2012/03/01/spiral...
>
> Hans

[Cesar Garcia]

As a side note, I believe Natalie Jeremijenko proposed a similar system of air polution monitoring based on façade mounted chimneys to capture air on ground level and capture polutants on top filters. Maybe she could provide additional information about this kind of air dynamics.

Best,
César

--
Cesar García - @elsatch

Ando con encolamiento para responder correos y los proceso lunes, miércoles y viernes. Si es algo urgente/rápido contáctame por Twitter. Gracias!

[Albert Chao]

Hi Cesar,

Your suggestion also perhaps brings another interesting point in mixing digital sensors with an analog form of measuring air quality. If the sensor box is designed so that the sensors are at the bottom and generating heat, then we can create some sort of natural air movement through the box. Strategically placed filters could show over time the pollution in the air.

Albert