Rick wrote:
On Tue, 25 Oct 2005 12:01:21 GMT, "Jim" Jim
wrote:

http://www.bwea.com/pdf/mid%20wales%20microwind.pdf

There are a couple of commercial windpower systems (i.e windsave)

http://www.energytech.co.uk/Windsave%20040205.pdf

The concept seems simple enough, there are a couple of homebrew
turbines out there (mast mounted), but afaik not one that can be
connected as easily. Despite this the system is not avaliable for
DIY installation.

Would a homebrew roof mount system be a reasonable project?


A roof mount is NOT an efficient place for a wind turbine.

given the requirements of the OP it most certainly is.

The turbine
needs a smooth flow of air.

no it doesn't, all it needs is sufficient airflow to turn it.

The air will become unsmooth some distance before it reaches the roof.

so ?

Its easy enough to make for a small turbine, but are you sure that
your building can take the strain ?

eh ? a 1-2Kw wind genny will destabilise a few hundred tons of brick,
mortar and slate ? even in the hebrides, that's a nonsense.