Thank you all for your replies.
ruddycrazy : that's a good idea and i understand the concept very well but i simply dont know how to do it
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B529 : Yes i will be able to raise the anemometer to almost the same heigtht; around 10m (32 feet) above my building.
ChrisOlson : That's a good idea too but I live in Lebanon and shipping an Air-X here would cost me a fortune....with the same amount of money I can buy a real wind turbine and hope for the best.
Edy