help me how to calculate the Lenz2 blade

[anhkhoa79]

Hello

i am in Viet Nam, i am doing the projrct about small scale VAWT. the blade i use is the Lenz2, but i don't know the formulars to calculate it, please help me

Thanks you so much

Khoa  

[windstuffnow]

http://www.windstuffnow.com/main/lenz2_turbine.htm

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[elvin1949]

Khoa

 The Lenz2_turbine is the best small scale vwat

around.Ed has most all of the bugs out of it.

 Google search the board for a lot's more info.

That includes other builder's of Ed's turbine.

 BE WARNED_the wind power bug is incurable.

Take lot's of pictures [we like to look at other peoples work].Welcome aboard.

later

Elvin

[tecker]

That's coastal area the Vawt should do well there .Ed has done some good plans for you .Nice to see you refer to this area as just VietNam (cool).

[randy727]

Am I wrong in assuming that the lenz2 VAWT is a drag type of unit?  Do I calculate the anticipated RPM based on the circumference and the wind speed being the same?  I hope that I explaned that well enough to be understood.  I believe this unit will be my next project.  I hope to mate it with a Fisher & Paykel SmartDrive motor.  500 to 600 watts would be perfect for my needs.

Randy B.

[windstuffnow]

  The Lenz2 is a hybrid lift/drag wind turbine collecting from both upwind and downwind blades.  In order to do this the TSR must be kept to 0.8 maximum for peak power extraction.  

  Calculating the rpm it would reach in a given wind loaded would be...

Windspeed x 88 / ( circumference ) x 0.8 = rpm

Windspeed in mph

Circumference in feet

The "88" simply converts the mph to feet per min.  

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[anhkhoa79]

Thank you so much Elvin!

I know that Lenz2 is the best one, but i couldn't find any documents prove that by mathematics (or formulars). May i use the formular of VAWT to calculate for Lenz2?

I am in Viet Nam . The wind power is not much, it hard to find someone research about it.I just have some free Ebook and don't have enougth document about it. if some one have books about wind power please help me some, or show me the link to download. Thanks so much.

Khoa    

 

[elvin1949]

Khoa

 Ed has all the info you need on his website.

http://www.windstuffnow.com

 He will also answer ? by email.his email address

is on his website.Just be sure to put lenz2 in the

subject line or it will go to the junk bin and he will never get it.

 have fun and good luck

later

Elvin