Faroun Savonius Wind Turbine

Step 6 Cage Assembly/ Wind Deflection

the wind deflection idea has been arround for ever but i did not see it with the Savonius so i dicided to be diffrent and combine my Faroun Savonius with the deflection method.

i simply biult the cage and then covered half the turbine where the blades are comming backwards, the reson to cover them is to eleminate the drage that the back of the blade create, also i am in the middle of adjusting the deflection method to be more productive in tunneling the wind twards the desiered area.

take a look at the rendering that i have created.

faroun

Comments

[rapidprototyping]

keep the (A-Vas-E-A) idea design a better frame support . I think he was trying to suggest the avasay might rotate out side the support frame so maybe it ought to be round like a small trampoline frame some how it also has to move 360 degrees freely in the wind maybe intergral to the cental axel shaft on seperate set bearings. It would have to be guided by a wind vane not into the wind as HAWT tail does but ninety degrees to the wind to creayte an avasay effect. We need get the science on this avasay effect percentage gain vs expense and effeciency it's actually not about effeciency or design but what works well for the masses a desig made for common recycable materials that anyone can build or buy cheaply will produce more watts then a corporate build turbine that un affordable and produces electricty for only those that can afford it. In a disaster having a source for fresh charged up batteries may make hugh difference just having lights and communications. So charging a cell phone battery or couple AA is worthy goal as well and there so many out there they are almost free if not free.

[boat9899]

I have a thought if you cork screwed the blades up would that in addition to the cage force air up  or down there by removing it from the assemble?

[faroun]

i see the point you are making, yes it is worth looking into, but i am bussy at this time to try the cork screw method.

regards

[der_fisherman]

I am sure that covering the "non working" half of the Savonius as you have done would dramatically improve performance. The drag of that half always brings the Savonius efficiency down, you have reduced that brilliantly....well done. But do remember that many folks will not understand why.... I had a similar idea recently, but designed the "covering" to swing around with the wind, always maintaining the optimum angle to the wind......more complicated than your design......complicated is not always good....! I want to experiment sometime to see if the complication is useful or not. Regards and thanks.

[faroun]

thank you for your great comments, I would love to see your idea in reflecting the unwanted wind.
I feel that I am disappointing some of my subscribers because I don't have accurate data, it is just that proper data needs more money and I am like most, only spend what I can. I hope I do better in the future.
some said that my v8-4" can and will produce 150watt in 35 kmh wind but all I got so far is 22watt at 24kmh wind when I did the test using ametek 38vdc. with presto alternator results should change dramatically but presto will cost me $325.00 and that for now is not an option. SO if you are handy and able to spend few dollars, please feel free to built my turbine for personnel gain only and see if it can produce 150 watt.
note that my V8-4" is on display at Harvard GSD Ecological Urbanism exhibit.
go to http://wrapwind.com for more info

regards

[Mr Fahrenheit]

Cool. Thanks for the reply on both accounts.

[Mr Fahrenheit]

You lower the units efficiency by adding these deflection pieces. The wind does not just turn in with the shape of the wind. There is buffering. The air flow would be much cleaner, and you would get more power, if you were to remove these. Very nice core system though.

[faroun]

thanks, you could be correct, but with my testing using the rpm gauge i had a bit more rpm with deflectors. regards