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Vertical Offset Wind Generator Blade Design - Part #1

Here is a rough model of what I call a "vertical offset blade design" for a wind generator. I show only "4 levels", however, more levels can be added. Essentially, the complete bottom two blades are at 90 degrees to each other. The next upper one, the third complete blade is at 45 degrees to the second one. The fourth complete blade is at 90 degrees to the thrid complete blade. Some of my reasoning to this design are that more blades help "catch the wind", but then again too many will "block" the wind from reaching a large surface (max force at 90 degrees to the wind). I'm not sure of the depth of each blade into the preceeding (lower) blade needed for max. efficiency with this design. I used about 2/3 depth, but maby 50% will give better results. Perhaps this design is sort of a medium between the designs for speed and the designs for torque. It is also like a regular design and somewhat like a helix design. I also made this because I did not see any on YouTube or anyplace else, except perhaps something that might perhaps be similar in photos of jet aircraft engine turbines. Even though designs similar to this are often used vertically (up and down), I see no reason why this design could not be used in a horizontal fashion, perhaps supported at both ends. Also a simple wind deflector can help increase the energy output. Like my previous example, if this is used horizontally, steering (into the wind) can be had by using a turntable type construction, etc. It needs more consideration and prototypes from the community. If you like to experiment with making a windmill, even without a generator, you can get some galvanized sheet steel at Lowes. About 2 feet by 3 feet for about 7 bux. Here is video of part #2 for a anoter/better look at the wind collectors/blades of the turbine system: http://www.youtube.com/watch?v... Here is the text description for that video in case don't need to see the vid: An advantage of a vertical axis wind turbine (VAWT) is that the alternator/electric generator is placed at the top or bottom of the turbine/blade system, and can be as large as desired without affecting the output (unlike a regular - "propeller" wind generator). For example, you can make or buy a homemade generator where the rotating magnets are located quite far from the axis of the turbines, therefore the angular momentum, or speed, are increased, and the result is a higher voltage and hence current. For increased speed, some type of gearing would be used; most likely the axis of the system would spin a large wheel/gear and that would drive a smaller gear for increased speed; chain/belt or direct gear connection. To prevent any "wobbling" effects which would increase friction and hence output, it is best to "balance" the turbine systems blades evenly. For example, used an identical blade and its angle at the opposite ends of the system, and so on. Tests need to be done utilizing a 3 blade turbine (the 4 blade was utilized in this design shown in the video) that is "offset". Here is a neat website about some wind and energy projects you can make: http://www.gotwind.org/

Channel: Howto & Style
Uploaded: November 30, 1999 at 12:00 am
Author: trailkeeper

Length: 01:46
Rating: N/A
Views: 28882

Tags: blade  design  efficency  energy  generator  green  offset  power  vane  vertical  wind  

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