Re: [OM] OT: Our new wind turbine

[Chris Barker]

How interesting!  But I suppose that at night there is no heating so it's 
relatively stable.  But during the day you'll have surface heating to mix the 
air and reduce the variation in wind direction.

There must be a happy medium of size of blade and elevation of hub.

Chris

On 16 Jun 2013, at 17:57, Ken Norton <ken@xxxxxxxxxxx> wrote:

> 
> The big-honkin ones we grow here have to be tall enough to clear the
> corn. That's just one of the problems here. We also get a pretty
> significant directional sheering from the surface drag. As the blades
> keep getting longer the entire disk is subject to a wide range of wind
> speed and direction. It's not uncommon to have a 30 degree shift in
> wind direction from the top of the disk to the bottom of the disk.

-- 
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/