" wrote:
On Jun 10, 7:45 pm, Meanie wrote:
Oops.....wrong link

Correct link http://www.flickr.com/photos/18223943@N06/9010876967/

That looks a whole lot more relevant to the topicg.

Anything around the sides is going to make it a lot easier for the air
exhausting the top to get pulled back into the sides unless there is
some sort of additional barricade between the top and the sides, like
a big flat plate with a hole in the middle for the exhaust air, and
extending horizontally to the tops of the side panels.and the building.

I don't see that being the case to any large degree. I think the upward
flow sucks air horizontally.

Greg