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Post by kutkota on Aug 25, 2014 20:18:39 GMT -7
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Post by thywar on Aug 25, 2014 21:25:25 GMT -7
I was going to comment but you asked for smart people :-(. That's the first time I've ever clicked on anything that had 'tree hugger' in it. Lol
It looks cool and seems like a great idea. But as usual it will be about pricing.
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Post by Cwi555 on Aug 26, 2014 4:00:53 GMT -7
Not claiming any particular intelligence here, but they are not giving credit where it's due in my opinion.  Their design is a rip off from Da Vinci's aerial screw, not the Achimedes screw.  I would have to question what would happen to that design in high wind. |
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Post by insaneh on Aug 26, 2014 4:12:10 GMT -7
It's the style I've been eyeballing for a while now.
The obvious advantage is a low profile. I'd much rather have one of these
spinning in my yard than a propeller style attracting a lot of attention.
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Post by geron on Aug 26, 2014 13:36:34 GMT -7
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Post by thywar on Aug 26, 2014 18:47:42 GMT -7
A windmill to operate the well pump would be great. Otherwise, not so much
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Post by thywar on Sept 29, 2015 12:47:36 GMT -7
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Post by woodyz on Sept 29, 2015 16:28:11 GMT -7
food for thought
will have to research some now
we did a proof of concept on a small flat blade turbine and on a 6" vertical pvc pipe cut on a spiral curve
we were able to produce "wattage" with both
and we all know windmills for pumping water have been used forever, as well as water mills made on the same design
I think they start to fail economically when the expectation over exceeds the capability
KS has many wind farms in the south west part of the state but the Koch brothers being in oil couldn't abide them. + I think the maintainence on a commercial wind farm is a deterrent. Offshore seems like a great idea if you could solve the maintenance/bearings issues.
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Post by marc on Sept 29, 2015 16:36:37 GMT -7
I love wind power under the right set of circumstances, it is truly fantastic! But, people tend to toss out tons of really cool sounding “facts” that are overly optimistic!
Bottom line is that "clear height of 25'-35' above all surrounding trees/buildings/terrain is everything to wind." Think in terms of open access to sun being critical for solar. Many wind turbine designs do exactly what the designs say that they will do - under the stated conditions. The problem is how the ratings are interpreted and presented.
Can I build a cheap, lightweight, simple unit to produce some electricity? Well, heck yes.
Will it produce a meaningful and usable amount of power that you would expect for your investment of money, time and effort? My best answer is
"Well, how long is a piece of string?"
At the risk of being repetitive:
1) Yes of course you can make some electricity with a small roof mounted setup.
2) The key word in that sentence is "some."
3) I am willing to bet that you will not get the power that you expect.
It honestly comes back to how long is a piece of string........?
Basic windmills have been pumping water with piston type pumps longer than even my imagination can span. THAT is a great app for wind.
Marc
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Post by thywar on Sept 29, 2015 16:46:42 GMT -7
If it produced enough power to run that 1hp Swedish pump in my well I would be ecstatic. On the other hand maybe 6 solar panels could/would do the same if that's all I wanted it for. Something reasonably reliable/inexpensive to operate the well pump.
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Post by marc on Sept 29, 2015 18:18:44 GMT -7
If it produced enough power to run that 1hp Swedish pump in my well I would be ecstatic. On the other hand maybe 6 solar panels could/would do the same if that's all I wanted it for. Something reasonably reliable/inexpensive to operate the well pump. Let's make it a group project to figure out what it would take. Do you have a data sheet for the pump that shows amperage draw? Is the pump ruunning on 120v or 240v? (Did you think ahead and go with a DC motor?) Is the well casing gold plated to match your RG-22? How many minutes per day do think that the pump needs to run in order to meet your needs? Marc |
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Post by thywar on Sept 29, 2015 19:29:28 GMT -7
I will get the data and post it. It's that $700 Swedish pump you and SG recommended. One horse power and no I don't believe it's set up for DC.
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Post by USCGME2 on Sept 29, 2015 19:34:11 GMT -7
Wasn't TJ building one of those from scratch?
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Post by woodyz on Sept 29, 2015 20:10:42 GMT -7
thywar my well pump is 1 1/2 HP, wired for AC/DC, and i keep it running with two phased 5 watt solar panels, ran a year on one 5 watt panel but someone convinced me my batteries would last longer with 2. I don't even have the AC connected any more, though I could have with just quick connect. do you have a pulley rigged over your well in your wellhouse so you can pull it and wire for AC/DC? How deep are you? if you don't have a tree notch or limb to pull the pipeline through build a "Y" tree with a 4x4 and 2x4. it wouldn't hurt you to pull the pump for practice anyway, but you shoulda wired it for AC/DC when installed. Hopefully you did include a wire cable with the wire run?  ? first - an on-line voltage drop calc for AC runs: (3% loss) www.elec-toolbox.com/calculators/voltdrop.htmDc or AC Voltage Drop Calculator : www.nooutage.com/vdrop.htm www.electrician2.com/vd_calculator.htmwww.elec-toolbox.com/calculators/voltdrop.htmspreadsheet based voltage drop calculator: www.solar-guppy.com/download/...calculator.zipvoltage_drop_calculator_SolarGuppy.zip you don't need 99% of this, but its a good site/source for what you do need. But they do say 50 to 75 watt solar, I do fine with 2 5 watts and running into pressure tank from batteries. www.kansaswindpower.net/pumps,_submersible.htm |
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Post by woodyz on Sept 29, 2015 20:17:08 GMT -7
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?
