Preheating by wind

[chatelot16]

if there is too much tree or building around the average wind of 5,5m / s given for your area will become 2m / s or even less on your roof and it will produce pawls ... I do not see by what a miracle axis vertical can do better

your roof is solid and resists to a huge weight ... but distrust, the old frame is made to resist the vertical weight, but not much to resist the lateral effort ... if you want to use your frame to fix the wind turbine it will be necessary to add cables stretched diagonally in all directions to stiffen the frame ... otherwise bad surprise at the first storm

the classic wind turbine has the advantage of being able to withstand the big wind without great effort thanks to a variable pitch propeller: we can put a mat high enough to climb well above the trees

the height of 12m is only the height without authorization ... it is not necessarily difficult to have the authorization to do higher, especially if there are already big trees

this height of 12m is especially useful for the plane: that there is not isolated thing too high which exceeds the visible average relief

it seems to me logical that this maximum height of 12m is not measured in relation to the ground but in relation to the height of the big visible obstacle: one could thus make a wind turbine mast always 12m more than the house which is next to

[CYRILR]

@Alan
Hello,
Dedeleco, did not participate on my tread, unless his message was erased without my noticing it?

@chatelot
Hello
With a horizontal axis, the turbulences make fall the yield very drastically. Vertical axis, it is more suitable for turbulence in what I read.
For the roof, do not break your head, she is able to take, she saw others; a lot more bleeding
I found this one that seems to me a lot to handle turbulence because of its shape. :
http://www.noveol.com/index.php?p=qualite

Thank you for your feedback

Cyril

[chatelot16]

Vertical axis, it is more suitable for turbulence in what I read.

that's what we read everywhere ... especially on the vertical wind turbine shop site

but I'm waiting for the proof

yes the turbulence decreases the efficiency of some wind turbine ... but a good wind turbine with horizontal axis being 10 times cheaper for the same power as a vertical wind turbine ... even if its performance is divided by 2 by turbulence its power ratio price remains favorable

but beware: everything depends on the speed of rotation: a horizontal wind turbine with too high a speed will have a too critical aerodynamic operation, and catastrophic with the least turbulence ... a horizontal windmill calculated to turn more slowly will be largely less disturbed by a turbulent wind ... alas, the more it turns slowly, the more the direct alternator is expensive ... which pushes to make small wind turbine turning too fast

[Alain G]

Hi Cyril!

Oops sorry!


Actually Dédé did not lay on this thread but according to what you said it seemed to come from Dédé!

My apologies to those who could hurt!

[CYRILR]

@Chatelot

The power-price relationship, that, that interests me. This is the only factor that will make me change the type of wind turbine when we will be made to get quotes .... If horizontal 5 come back cheaper comparable performance than 2 vertical, it's sure neither my father, nor me, are not maso . But we are not there ... it may take a few more months.
The question of the alternator, that too it will be a joyful puzzle. From what I understood now, the key to heat productivity starts with the choice of the alternator. So I'll have to draw the question. Do you have any reading suggestions to make about this?

@Alan,
No big deal, do not break your head with that.

Thanks for your comments

CYRIL

[chatelot16]

there is a real french manufacturer of slow alternator for wind turbine
http://www.alxion.com/fr/gammes/alternateurs-kits-stk/

it only sells the rotor stator kit: we can build the rest with roll of the size we want to support the propeller

there are lots of wind turbine manufacturer that uses these alternator