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Forum Index : Windmills : How much output can I expect

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heynow999
Newbie

Joined: 15/02/2009
Location: Canada
Posts: 13

Posted: 01:48am 15 Feb 2009

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What I would like to do is build a f and p style windmill and put it in my backyard. I dont want to try to build something fancy or big, just a typical f and p type windmill. I have never built a windmill before, but I have solar PV and hot water, so wind is the only thing left for me to do!

I live in Canada near Toronto and the Canadian wind atlas tells me that the winds in my area are 5m per second. My location in the backyard is not ideal. I have to get approval from the boss(wife), so I think the highest tower I could get away with is maybe 7 meters. There are a few trees within about 12 meters that are definately taller than 7 meters.

As for what I am going to do with the power, if it is worth it I may buy an inverter and feed the grid. I am already grid tied with my PV so it would not be a big deal to hook up the wind.

I am just looking for rough numbers to get an idea of how much power it could produce.

Just FYI, we pay about 12 cents per KWhr Canadian, but I sell PV generated electricity to the grid at 42 cents a KWhr!

Thanks

Peter

RevUpWind

Regular Member

Joined: 03/05/2008
Location: Australia
Posts: 60

Posted: 07:36am 15 Feb 2009

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heynow999 said What I would like to do is build a f and p style windmill and put it in my backyard. I dont want to try to build something fancy or big, just a typical f and p type windmill. I have never built a windmill before, but I have solar PV and hot water, so wind is the only thing left for me to do!

I live in Canada near Toronto and the Canadian wind atlas tells me that the winds in my area are 5m per second. My location in the backyard is not ideal. I have to get approval from the boss(wife), so I think the highest tower I could get away with is maybe 7 meters. There are a few trees within about 12 meters that are definately taller than 7 meters.

As for what I am going to do with the power, if it is worth it I may buy an inverter and feed the grid. I am already grid tied with my PV so it would not be a big deal to hook up the wind.

I am just looking for rough numbers to get an idea of how much power it could produce.

Just FYI, we pay about 12 cents per KWhr Canadian, but I sell PV generated electricity to the grid at 42 cents a KWhr!

Thanks

Peter

Hi Peter, Any trees or structures near your proposed mill will affect its performance. If your prevailing wind corridors are clear you shold do OK. Lot's of trees around will kill your performance.

I have a dual stator F&P with 1200R blades (3) and I can get 360 watts at 12 volts in 25Knot winds. I am looking to improve on this.

I have another slightly less efficient mill because I have about 40M of cable losing about 40 watts. With both mills I can run a 260 watt Fridge/freezer and a 140w freezer all day in such winds and still charge up the batteries.

Russell

....River Heads - Australia
The wind blows wherever it wishes; you hear the sound it makes, but you do not know where it comes from or where it is going.

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