Unique Wind Turbine Very Adaptable Design

http://www.instructables.com/id/Unique-Wind-turbine-Very-adaptable-design/

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Unique Wind turbine. Very adaptable design, vawtby james123cb on April 22, 2012

Table of Contents

Unique Wind turbine. Very adaptable design, vawt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Intro: Unique Wind turbine. Very adaptable design, vawt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 1: Tools and materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Step 2: Main support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Step 3: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Step 4: Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Step 5: Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Step 6: More Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Step 7: Detail view of wind vane . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

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Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11


Intro: Unique Wind turbine. Very adaptable design, vawtThis is my home made wind turbine. What makes this one special is that thefoils self adjust to maximize power.It rotates vertically instead of horizontally. (also known as a VAWT) . There are many different designs on the INTERNET where the foils adjust, but this is my own uniquedesign. What makes this design nice is that it is easily scaled up or down in size, and there is no welding required.

Most of the parts can come off with a screw driver so you could really play with the sizes.Most of the tools used are standard tools.

There are two videos that I have made in association to this instructable, one shows the mechanics of how it works, the other is a short video of the working prototype.

Working prototype: http://youtu.be/9-jXDERwk3UMechanics of how it self-adjust: http://youtu.be/X4YFPb60euE( In this video I used gears instead of pulleys, but the mechanics are the same, and the blades/foils adjust the same)

Step 1: Tools and materialsTools:Metal Grinder ( with cutting blade)Drill pressDrill bitsRivet gunoptional Tap die set, ( Screw and bolts will work also)Materials:3 timing pulley. I used two 60 tooth pulley and 1 x 30 tooth pulley2 timing belts ( Pulleys and belts purchased through "spd-si", Sprocket and chain would work as well)multiple bearings . ( purchased online at "VXB")Aluminum sheet metal ( any big box store)Aluminum 1/2" inch tube, and 1 1/4" round tube ( Big box store)1/4inch and 3/8 inch metal rods ( big box store)JB weld ( epoxy)Polymer spacers (easy to drill and cheap, purchased at big box store)Flat aluminum bar 1/8" thick, 1 1/2 " wide2 x 1/4 inch polymer thrust bearing1 x 1/2 inch thrust bearing


Step 2: Main supportmain support Material:1 1/2" flat aluminum aprox 12 inch long.4 bearings, 3/8" inner diameter , 4 mm thick, and 7/8" outer diamter2 pieces of scrap metal to keep the top and bottom piece separated and aligned ( to keep 1 1/2 " sheet metal seperated). my spacers are 1 inch thick2 polymer spacers , 1/2' inch inner diameter

Getting started:

I chose a distance of 5 inches from the center hole.Mark the center and outside holes. ( I like to use a punch or utility knife for my markings on metal)Drill 1/2 inch center holeDrill outside holes ( 5 inches from center) , ( outside holes should be size of your outer bearings ( mine were 5/8")Glue your outer bearing in flat stock metal. ( I used JB weld glue , i should have purchase *flanged bearings instead)Glue the 1/2 inch spacers to the center hole ( these help keep everything steady)Glue 1 inch metal spacers between center and outer holes


Step 3: Center tube:

Center tube is 12 inches long, 1/2 inch outer diameter.Place 3 bearings on this tube.1/2 inch Inner diameter bearing at the bottom. ( This one I glued in place)1/2 inch inner diameter bearing, at the top, Used a white polymer spacer to keep the 2 nd bearing in place on the 1/2 inch tubeAt the top of the tube I placed the 1/2 inch inner diameter THRUST bearing. Ensure this bearing has an outer diameter larger then your largest tube. ( in my case thethrust bearing has an outer diameter slightly greater then 1 1/4 inch.) The entire weight of the rotating mass will be supported by the thrust bearing.Top part:I used 2 bolts to keep the top parts togethernote: My thrust bearing was not sealed, so I wrapped the top support of the thrust bearing with a thin sheet of metal to create a dust shield.

Step 4: StandMy stand is 36 inches highMain support tube is aluminum, and 1 1/4" outer diameter, inner diameter 1 1/8"The base I made with a piece of wood with a bore hole 1 1/4".Then I screwed 3 pieces of metal to create the base

Important:The wind Vane needs to turn freely.I placed a skateboard bearing (1/4" inner diameter) inside the 1 1/4" tube, The wind vane is supported by this bearing with the use of the 1/4" rod.I placed the bearing on a round piece of wood and screwed the piece of wood in place ( see picture)The base can really be made of anything solidI used adjustable bolt screws ( or tensioner) so that the center pole can stay level on any type of ground.


Step 5: AssemblyAssembly of center tube and rod

Vane rod:inner 1/4" vane rod . ( 1/4 inch round, steel, 28 inches long)Place polymer spacer on bottom of 1/4" rod, I drilled the spacer and placed a set screw in it.The spacer will rest on the inner skateboard bearing

Your 1/4 inch rod is complete once you've placed the bottom spacer on it, You can place it inside the 1 1/4" tube and it should be resting on the skateboard bearing that isset in the 1 1/4 tube.

Half inch tube:

On the top part of the 1/2 " tube glue a small 1/4 inch bearing ( Mine is 1/4"x 3/8"x1/8")Take your inner hollow center tube ( Mine 1/2 inch OD, 12 inch long)Install other bearings:2 half inch bearing should be installed on shaft, or use a shaft support to keep the bearings in placePlace thrust bearing on top of 1/2 tube.


Your 1/2 inch tube should now have 4 bearings: 2 x 1/2 "bearings, 1 x 1/2" thrust bearing , and a glued 1/4"bearing at the top.You can now place your 1/2 " tube in the 1 1/4" tube


Step 6: More AssemblyAssembly:

Outer timing Pulley assembly:Pulley has a 3/8" hole and two set screwsPulley is set to a 3/8" rod aprox 8 inch long3/8" rod ( mine is aluminum) needs two holes to screw or bolt foils to. (make sure the two holes are lined upFoil:Is made with 1/2" tubing , 10 inch longand 1/16" aluminum sheet metal.( 4"x10")Take a grinder or hack saw and cut the 1/2 inch tube in half, for the top 5 inches, now slide the sheet of aluminum in the cut and glue it in place.Drill a small hole an inch from the bottom of the 1/2 tube ( to enter a screw into the timing pulley assembly)Pulley assembly with 3/8" rod will fit on metal supportPlace thrust washer under Pulley assemblyConnect 10 inch timing beltPlace top metal supportOn one side place another timing pulleySlide small timing pulley on 1/4 inch van rodConnect 5 inch timing pulley

Aligning foils:Foils should be perpendicular to each other, Use set screw to adjustAligning Wind vane:Wind vane should slide on to 1/4 inch rod,Use the set screw or bolt to set the VANE parallel to 1 side ( In the picture the Vane is set Parallel to the foil on the right) in this case the wind turbine will alway turnclockwise


Step 7: Detail view of wind vaneWind Vane Assembly

Main tube:1/2 inch tube, 15 inches longDrill small hole in tube to place set screw or bolt

Horizontal rod:1/4" rod, 20 inches long2 holes for rivets

Vane:1/16" aluminium sheet metal, 8 inches square piece that was later cut into a triangle2 holes for rivets

Assembly:Drill two holes in your 1/4 tube and in vane."Rivets VANE and 1/4 tubeOn top of the 1/2" tube drill 1/4" hole and insert 1/4 inch rodI used metal putty to glue 1/4" rod and 1/2" tube in place.

Your wind vane assembly is now ready to slide onto the 1/4 inch center rod.

If you have any questions send me a msg on my youtube account.Thanks


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How I built anelectricityproducing windturbine bymdavis19

Miniature WindTurbine by TheParachutes

Freeprofessionalwind turbineblade byphmanzano

Prototype WindTurbine VAWTHome HydrogenProduction(Photos) byfozzy13

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Comments34 comments Add Comment

suharto_u says: Nov 14, 2013. 7:35 PM REPLYi newbie in VAWT.thank you very much how to install generator? I have one of small axial flux wind generator (homemade).anybody can help me,email me at [email protected]

radhu says: Aug 20, 2012. 3:07 AM REPLYHi, I am a total newbieLove your designs but what kind of motor have you used and how did you attach it ?

Tks


radhu says: Aug 20, 2012. 3:04 AM REPLYHi I'm a total newbie,Love your design but what kind of motor is used and where is it attached ?

Tks

jcvillar says: Apr 26, 2012. 8:47 AM REPLYThis design dates back to the 19th century. You usually see it with four vanes. This version, though, is the first lightweight and portable one I've ever seen.Typically, these VAWTS can deliver high torque at low speeds so you might be able to either pump water with it or get some electricity out of it if you rig up adrive train thingamajig and drive an old alternator you should be able to pick up at a junk yard.

paqrat says: Apr 26, 2012. 11:28 PM REPLYBeing that is it lightweight and portable aren't you concerned that it might just blow over?

james123cb says: Aug 3, 2012. 9:18 AM REPLYlol, Two weeks at my parents cottage and it blew over and damaged one of the foils. I thought it would never blow over. I posted a new video with itturning in strong gusts of wind. Notice the two sand bags at the base. Thanks for the comment....I should have replied earlier.

kretzlord says: Apr 23, 2012. 4:44 AM REPLYsuper impressed with this design! Thanks for sharing. Do you think an airfoil blade shape could be integrated with any benefit?

james123cb says: Apr 24, 2012. 7:06 AM REPLYMy blade is 1/16" and then in the center it's a 8/16" (or 1/2 inch) ...my center support is really not aerodynamic. I Think the blade shape could really beimproved.

Since the blade rotates 360 degree ,an airfoil with lift would work great on one rotation , but then would be counter productive on the next.

We would need a neutral Airfoil that is aerodynamic but does not provide lift.Thanks

JetBoer says: Apr 26, 2012. 10:11 AM REPLYFirstly, this is a brilliant design. I would rather suggest that in stead of focusing the aerodynamics of the airfoil, consider this. Rather try to increasethe number of blades per section, say to 3 or 4, so that instead of having a maximum applied force every 180 degrees, reduce it to 120 or 90degrees. It may get complex, but I think that it would be more effective.

nwlaurie says: Apr 26, 2012. 3:36 PM REPLYI suspect you'd either reach a point where the trade-off of drag, friction etc against performance reaches an equilibrium at - just guessing -probably no more than three sails ... OR ... it might evolve into a complete circle of tens, hundreds, who know of sails.Brilliant concept. Many thanks.

JetBoer says: Apr 27, 2012. 3:03 AM REPLYYou're right, at some point it will be useless to to add more blades, but starting at 2 and calculating the force the air exerts on the bladesalong with drag and the resultant moment about the central shaft, I think that an optimal blade count is possible.

nwlaurie says: Apr 27, 2012. 4:06 AM REPLYI suspect trial and error would be more reliable than calculations! No me though!

kretzlord says: Apr 23, 2012. 4:48 AM REPLYfound a similar one http://www.youtube.com/watch?v=NufUprWL1Co&feature=related

james123cb says: Apr 24, 2012. 7:09 AM REPLYYes , I saw that one too.Here are a few more, if you search youtube:

Eolienne axe vertical EolProcessvawt with rudder 2 ( my favorite one )Variable Pitch Vertical axis wind turbineLego rotating blade vertical axis wind turbine

Theres some debate as to the optimum amount of blades on this type of self adjusting VAWT. My theory was that if you want more power ...justmake the blades larger. The more moving parts needed the more expensive and complicated it gets,


gdawgtuk says: Apr 26, 2012. 8:26 PM REPLYI am curious what kind of wattage outputs you were getting?

AlexHenrique says: Apr 26, 2012. 6:58 PM REPLYI want to see this in very large scale. If using this idea to capture energy from waves in the beach, may be the same principle can be great.

Dr Qui says: Apr 25, 2012. 5:02 AM REPLYInteresting idea, that's a lot of mechanism to be exposed to the elements. Do you have a video of it in a say a 8-10mph wind which is a decent outdoor test.

Excellent build quality, I highly recommend that you take a look at the work of Edwin Lenz and try his Lenz turbine, its an unconventional design for a VAWTbut produces serious torque and is self regulating and self start from any wind direction. You have the skills with aluminium that would produce an excellentLens turbine.

Just one thing I noticed is you mention the a chain drive would also work, from my own experience chains do not like running on a horizontal plain they muchprefer the vertical plain, on the horizontal plain your sprocket need to be perfectly concentric to the axle as any play at all will have the chain coming offconstantly, i had this problem on my first turbine attempt and rules out horizontal chains from all future designs.

Good luck and keep it up.

Cleveland Motley says: Apr 26, 2012. 9:07 AM REPLYV belt drive instead

Dr Qui says: Apr 26, 2012. 4:04 PM REPLYThe flat belts from washing machines are useful, and easy to scavenge. a flat toothed belt would be best to eliminate slippage in wet weather

schmitta says: Apr 26, 2012. 3:35 PM REPLYYou should have patented this. Now it can't be patented.

Orngrimm says: Apr 26, 2012. 1:17 PM REPLYBrilliant!Sure, it may not be the perfect and-solution... But hey: It is a prototype.And it seems to work.

What do you think are the main-benefits in comparison to "normal" propellers? May your idea be better in low-wind-situations than the common design weknow? Or in very harsh winds?

Anyway: I am looking forward what may be changed and developed with this idea. Go on and dont listen to the Ney-sayers... :)

james123cb says: Apr 26, 2012. 2:48 PM REPLYThanks to everyone for the positive comments and suggestions.

Typical propellers in high winds need to be shut down because of the vibrations.Typical Propellers might be difficult to start in low windHigh rpm leads to unwanted noise

This design will work well in low and high wind speeds. ( I took a leaf blower to it and it still spun real nicely)Possible future design changes:Enclosed belt design ( to protect it from uv rays)Polymer bearings on exposed parts(Eg: "Igus" bearings), ...Weather no longer issue ........More aerodynamic foils

kevsplace says: Apr 26, 2012. 10:42 AM REPLYyour design is awesome!! I understand that you made a "design concept" or "working model" do go on from. As for the concerns that others have about thelosses due to friction others are bringing up, that is where new designs come from, thinking past the losses for the gains.Your instructions and labeling were also great. Keep going!!

wgrube says: Apr 26, 2012. 10:25 AM REPLYUsing profiled blades (like airplane wings) instead of flat blades, improves the torque, also this design could use Jacques Cousteau's turbosail principle (veryinteresing!), but that would be too complicated. The beauty of this design is in it's simplicity. Another idea is too carve little dimples on one side of the blades,this will create an air layer and increase the air speed on this side creating a vacuum, and consequently increasing the torque. Just suggestions! ;) Yourdesign is really great!


Jimmimak says: Apr 26, 2012. 10:22 AM REPLYWell done! I had a similar idea a few months ago, but I never made a physical model. I'd be very interested to know how much more efficient it is. Keep upthe good work!

sheldor says: Apr 26, 2012. 10:01 AM REPLY?

TormundGiantsbane says: Apr 25, 2012. 8:01 AM REPLYThat looks to be a very elegant design.

Have you been able to produce power measurements using it?

james123cb says: Apr 26, 2012. 8:08 AM REPLYI'm more mechanical then electrical, so I have not gotten around to calculating the power output yet ...that will be the next step.

shortyl says: Apr 26, 2012. 7:18 AM REPLYRealy great design. I think I may try and make one of these only modify to use wooden gears. It appears that the ration is 2:1 for the gears. Thanks for sharingthis design with us.

jakobus9 says: Apr 25, 2012. 10:58 AM REPLYit's a genius design,but won't you lose a little energy caused by the toothed wheels turning on each other?so in you would want to hook a generator to it, won't you lose less energy than you gain with this design?

profpat says: Apr 25, 2012. 8:40 AM REPLYvery good! but looks complicated!

rimar2000 says: Apr 23, 2012. 5:33 PM REPLYVery clever design!

I suppose this WAVT is more efficient than others.

Scott_Tx says: Apr 23, 2012. 6:20 AM REPLYVery nice!

rickharris says: Apr 23, 2012. 2:59 AM REPLYReally Neat well done. Worth trying out.

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Unique Wind Turbine Very Adaptable Design