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Racingken

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Joined: 24/11/2011
Location: United States
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Posted: 01:46am 12 Jan 2012

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Has anyone seen the Honeywell wind turbin that can start up in 1/2 MPH/0.22 m/s?
It sure is different. I was wondering if this might be the way to go in a build?
Here is a link to their web site.
http://www.windtronics.com/honeywell-wind-turbine Edited by Racingken 2012-01-13

Racingken

Gizmo

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Joined: 05/06/2004
Location: Australia
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Posted: 02:06am 12 Jan 2012

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Not much power can be harnessed in those winds, maybe enough to charge a mobile phone.

I dont think its anything special, the power figures are average for that size turbine. Its rated at 1500 watts at 31mph ( 49kmh ), which is not an average wind, more like a storm. Looking at its graph, its shows about 150 watts at 10mph ( 16kmh ) which is more like the average wind for most people.

Depends on price, if its cheap enough.

Glenn

The best time to plant a tree was twenty years ago, the second best time is right now.
JAQ

Racingken

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Posted: 02:20am 12 Jan 2012

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Thanks for the reply Glenn.

Your right about it not being much power unless there is a high wind, but what about adding to the diameter of it? I wasn't thinking of buying one as I can hardly afford the parts to build a Hawt or Vawt. But I was thinking of something I read here about more power can be gained from a larger diameter. Possibly a 2.2 m diameter. Thats over a 22% gain in diameter. It was just a thought anyway.

Thanks again.

Ken

Racingken

MacGyver

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Joined: 12/05/2009
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Posted: 03:39am 12 Jan 2012

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Racingken]

A 3 mph cut-in is impressive, but with a "compression wheel" for a blade, I doubt the cut-in voltage is much above half a volt if that.

I worked it backwards using Alton's Calculator and found a 2 meter 3-blade configuration cranks out 1585 amps at 936 rpm. That at load is an extremely aggressive number. My hunch is there is more "dealer puffing" than actual cold, hard facts in this advertisement.

With an average wind speed of around 7 or 8 mph (more likely) you can expect about 35 watts. If this unit is not free, I think I'd pass on it and do a little more research before I bought an off-the-shelf, ready-to-fly mill.

. . . . . Mac

Nothing difficult is ever easy!
Perhaps better stated in the words of Morgan Freeman,
"Where there is no struggle, there is no progress!"
Copeville, Texas

BobMann

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Joined: 30/06/2011
Location: United States
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Posted: 04:20am 12 Jan 2012

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Try $7000 to $10000 for the unit over 200 LB to this day no VID showing real number has been shown??

Bob Mann

Racingken

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Joined: 24/11/2011
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Posted: 03:11am 13 Jan 2012

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Mac, Bob, I am not planning on buying one, I was thinking of building one, with a bit larger diameter. But I guess it would take quite a bit of wire with all the coils I would need. Not to mention all the mags it would take. So maybe I will just build my dual rotor alt as planned. 2 rotors of 16 mags each and 12 coils.

Thanks for the responces,

Ken

Racingken

GreenD88

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Joined: 19/05/2009
Location: United States
Posts: 104

Posted: 06:18pm 14 Jan 2012

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Would be easy to make with a bicycle rim :D, Their towers look kinda wimpy for a 6' 240lb turbine with a good amount of surface area.

Licensed Master Plumber / EPA 608 Universal License / 410a Safety Certified / Medical Gas Brazer/Installer

Racingken

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Joined: 24/11/2011
Location: United States
Posts: 28

Posted: 02:49am 16 Jan 2012

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It would be an awful big bicycle lol, I was thinking more about a 4 or 5 foot diameter one. But I think I will let it slide for now. I am getting ready to start winding a few coils tomorrow to test my mags with. I will be testing some cheap mags and my Neo's. Just to see how much difference they make.

Thanks for the thought tho,
Ken

Racingken

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Posted: 01:33am 17 Jan 2012

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Well that went over like a lead baloon.
I did get 1 coil made with 100 turns. I don't have a way to mount the mags to get a good pass on the coil, so I drilled a couple holes in a 3/8" piece of plywood and stuck 2 mags in the holes. I made the holes 2" apart I put a junction box cover on one side to hold the magnets in place while I flashed them past the coil slowly and some times fast. I seemed to get a higher reading more often when passing them slowly past the coil. With the digital Ohm meter set on 20dcv I got .2, with it set on 200m I got 2.3dcv. When I placed it on DCA at 20m I got a reading of 2.49,
At the speed I was getting the best readings I think would come out to about 3 seconds between passes or about 20 RPM as best as I can guess. So if it is .23 volts per coil times 12 coils equal 2.76v @ 20rpm times 5 for 100 rpm would equal 13.8vdc. Now if it is .2 then that would be 12vdc @ 100 rpm.
I almost forgot to say I am using 16 gauge motor wire, and 3/4" by 1/2" n42 neos.

Ken

Racingken

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