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17th November 2014, 08:52 PM #76
fire
A local here, off grid , has small wind turbine on a guyed pole, Its very small , at a guess its about 50 watts output . I drive past it most days and it usually isn't doing much . They also have a battery bank and generator, the whole shed went up in flames a few years ago. By the time the fire brigade arrived it was too late . Mike
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17th November 2014, 09:15 PM #77
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18th November 2014, 11:48 PM #78
now that is something I know something about
in general, with a road sign, you don't mind if, following a really strong blow, the supporting posts are a little bit (or very much) bent -- replacing the posts is relatively easy and low cost
It's a balance between poles that don't bend and poles that will break off if hit by a car.
not quite the same with a wind generator
1. you don't want the generator breaking in a really strong blow
2. you don't want the pole bending in a strong blow as this will affect the ability of the generator to continue working when the wind dies down.regards from Alberta, Canada
ian
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19th November 2014, 08:53 AM #79
That's why if the tower/pole is of light construction it must be guyed. Of course if a guy wire snaps, all bets are off.
I was considering putting one of these in myself a few years ago. I had thought of making one from an old washing machine motor, more for the hell of it than any other reason. I decided it wasn't worth the effort because of a number of problems to do with finding a decent site. If you don't have a suitable location, then it's really not going to ever meet your expectations power production-wise.
One of the references recommended that the height of the turbine should be 10 metres + the length of a blade higher than any object within a 150 metres radius. Otherwise there is too much turbulence, which will affect the power output. It doesn't matter how windy it gets where you live, if you can't achieve that, they basically say don't bother."I don't practice what I preach because I'm not the kind of person I'm preaching to."
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