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Guru

Join Date: Oct 2008
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Re-purposing Some Items

01/12/2015 9:34 PM

Easy DIY Windmill Project That Produces Electricity

I think it's 3,000 watts, not 300.

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Guru
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#1

Re: Re-purposing Some Items

01/12/2015 9:40 PM

Nice idea to have the shaft offset from the centre of the mill. Hadn't thought of that in all my attempts. (Always tried for conventional centre axis.)

As always though, the devil's in the detail. Still need to find, purchase and attach the electrical side of things.

Also, if it's a little underpower there is an option to extend the shaft and mount another set of vanes above those.

Thanks.

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Guru

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#2
In reply to #1

Re: Re-purposing Some Items

01/12/2015 9:46 PM

Or, maybe six scoops?

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Guru
Popular Science - Evolution - New Member Popular Science - Weaponology - New Member

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#4
In reply to #2

Re: Re-purposing Some Items

01/12/2015 10:23 PM

Too many raisins if you ask me.

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Guru

Join Date: Aug 2012
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#3

Re: Re-purposing Some Items

01/12/2015 10:09 PM

I'd like to see what this baby spits out in a blizzard!

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Guru

Join Date: Jun 2009
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#5

Re: Re-purposing Some Items

01/13/2015 12:34 AM

I would say its a very optimistic 300 watts. The DC gear motor its hooked to is in no way a 3000 watt unit.

To be honest even in one of our typical ND winds I would have doubts that it can put out much over 100 watts. Just because the contraption can spin a 300 watt DC motor does not mean it can spin it with an actual 300 watt load on it.

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Guru

Join Date: Mar 2012
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#6
In reply to #5

Re: Re-purposing Some Items

01/13/2015 12:47 AM

Like this guys said: You put a larger motor on it and produce more power! Haha!

Would have like to see this one rotate or did I miss it in the movie?

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Guru

Join Date: Apr 2011
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#7

Re: Re-purposing Some Items

01/13/2015 2:05 AM

Even 300 watts seems overly optimistic...

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Guru
Engineering Fields - Optical Engineering - Member Engineering Fields - Engineering Physics - Member Engineering Fields - Systems Engineering - Member

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#8

Re: Re-purposing Some Items

01/13/2015 7:58 AM

I doubt it will recoup the energy spent in building it.

/Where's the duct tape?

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Guru
Hobbies - CNC - New Member Hobbies - DIY Welding - New Member Engineering Fields - Electromechanical Engineering - New Member

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#9

Re: Re-purposing Some Items

01/13/2015 8:27 AM

plastic snow shovels?

Better take pictures right away.

After a dozen uses, mine looks pretty crappy.

WAIT a minute..... is there a Government Green Energy Grant here?

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Guru

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#10

Re: Re-purposing Some Items

01/13/2015 8:44 AM

A good estimate of available energy that could be utilized for it, can be computed using Kinetic Energy of the wind to compute Power capacity neglecting losses of course.

V' = Av, ρ= m'/V'; m'=V'ρ; m'= ρAv

Power(wind) = 1/2 m' v2

Power(wind) = 1/2ρAv3 ; A= projected Area of Shovel along the longitude of the diameter (diameter x width of shovel), ρ- 1 kg/m3 typical estimate, v - velocity of the wind.

At 300km/hr, that should be at maximum power. Oh wait, today is my 999 post, creepy.

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Guru

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#11
In reply to #10

Re: Re-purposing Some Items

01/13/2015 10:30 PM

I think that is optimistic, since the "back side" of the shovel is also exposed countering the "front side".

Why do people think they can get so much power from a mini mill and also think their car doesn't have wind resistance?

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Guru
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#12
In reply to #11

Re: Re-purposing Some Items

01/13/2015 11:00 PM

Might as well stick two electrodes in an orange.

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Guru

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#13
In reply to #12

Re: Re-purposing Some Items

01/13/2015 11:24 PM

That might produce more power!

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Commentator

Join Date: Feb 2010
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#14
In reply to #12

Re: Re-purposing Some Items

02/11/2015 5:55 PM

Stick them in the talking orange - please!

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avid0g
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#15

Re: Re-purposing Some Items

06/03/2016 6:51 PM

found some interesting stuff on the internet? get a job!

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