Wind Turbine PVC Blade Design

[DynamiitHarry]

If I want to make a 0.5m blade, what would the table be like (r and L)?

[SenTRozom1]

hi green engineer, thanks for that good work. im building a wind turbine and i used your excel file to calculate. i cut one of blades. but my material of pvc pipe is too weak. i will buy thicker one. my question is is there anyone who used that calculation. does it work well?

2. question.

i live in apartment, i will build it on roof. maybe it will make some sound,noisy :S

can you give a suggestion should i build vertical or horizontal wind turbine,? can they produce same power with same wind?

[rboos]

Perfect video.. Gonna start tomorrow morning! Thx!!!!

[samdekok72]

Made a set last night - unloaded they were frightening. Gonna add more blades and up the torque, and use an alternator. The blades are a brilliant design! Found a nice flexible base PVC tube - and will monitor over time before they get brittle.

[brodie1709]

AHHHHHHHHHHHHH!!! MATH!!! MAKE IT STOP!!!

[Wordinary]

absolutely terrible music

[GreenEngineer07]

Look for a link to my website on my main page Try this link, scroll down a ways and you should see a document related to blade design. Your correct it is really to fast to get much out of it, but I thought it was at least a way to provide an overview that was not boring.

[Soonmush]

The vid is way too fast for dummies ;) Do you have a good link for pdf etc?

[energyman1988]

too technical. 

[forx4crawler]

is your design efficient i want to know how does your blade perform especially about the/with wake effect ( not trying to pick a fight, just wanted to know if pvc designs can be good )

[shirteesdotnet]

I used the soy sauce, but dont notice much difference! Please help!

[markbeermonster]

Nice vid and the the tune is rocking

[derman077]

quickly describes one method for one percent of the population of the planet. you might as well be speaking greek for the rest of us, except the greeks who you would be speaking spanish to. way to go fuknuts

[SkeyeDreamer]

thank you!!! very interesting i made my own rotor with a week-end of work. The turbine works amazing! Onest 120 watt!!! the previous socket (without diagrams) only 75-80 watt at max! very nice. Thank you soo much!!

[kilynhoward]

This reminds me of my friend's custom cabinet shop. The designer was working hours on the design, the dimension numbers, bla bla. And while he spent all day doing it, the cabinet maker just went into the shop and made it without any diagrams. The perfection here is a joke because the amount of function and performance gained isn't worth the design time. This proves over educated people spend way too much time dreaming, while the average guy just gets it done. The music is really annoying too.

[x250f23x]

Im sorry but cabinets have nothing to do with efficiency. Extracting every bit of energy is the name of the game.

[ikedasquid]

@kilynhoward Yes, and that's how a bunch of garbage men and carpenters created all those 787s over a weekend and 2 cases of Coors light. You're an idiot.

[electricshiver]

Hey..

What Dj and track is that your playing in your video?

[davidrrrd]

i folowed links to the site but cant find anything on the site?

[eloid777]

lets see the blades in action and some

voltmeter readings, thanks for sharing

[yox046]

I´m a student of Industrial engineer. I´m studying about wind turbine of low power in special: outline blades based in tubes. I am looking for some information about this and if it is possible, could you help me?I would know if the measures that you use to make the blades come from your investigations or you take it in others investigations?

I want to ask if you know where I can obtain more information.

Thank you for your attention and I look forward to hearing from you.

Yours faithfully

[sjh7132]

When I did this, I pretty much came up with the same equations, but I didn't bother with angle of attack. (I just figured loaded it will run a little below it's target TSR.)

I think you made a mistake converting angles to distance around the tube. It should be angle (rads) * tube radius. I think you might have used tube diameter.

At the hub center it should be close to 90 degrees, not 180.

[GreenEngineer07]

There are some mistakes in the Video which were brought to my attention by some other users. The correct results can be found by following the link in my profile at the small wind turbine collaborative design site

[sjh7132]

This video didn't make it clear that you planned to put a skin across the open side of the tube, like the web page shows. Most people just use the open tube. My comments about your calculations are not valid for your configuration.

[GreenEngineer07]

Good point, there is no skin shown in the video, I have been negligent on my testing and really have not confirmed which works best.

[sjh7132]

Don't forget about the hub radius. I think your blade would have a little less curve at the end if you started r at about 6 inches.

[ungenauer]

great, 5*!

[ymjxiaohu]

the PVC design method can use for MW blade？？？？？？？

[GreenEngineer07]

Um . . . . I am not smart enough to answer that. . . my guess is no

[DeanC993]

Thanks for the video you give great info! i love your wind turbine sorry it broke in high winds cool music!

[noamdodo]

Can you tell me what TSR and alfa did you choose? Can you post the document with the calculations? Thanks. Noamdodo

[wo1fman]

What song is this?

[GreenEngineer07]

geigercounting: ultimate ballad to ride your horse by

[wind4watts]

I think you have got a decimal point wrong somewhere, those are mainly great but the section close to root will make a great little air brake if made as shown here, cut 2-3 inches off that curved leading edge root angle and they will work great!, very helpful for beginners on the whole though, well done.

[sjh7132]

I agree, the leading edge should approach 90 degrees at the hub center or 1/4 pipe. Not half a pipe.

[vicmeuk]

try 55 cm blades for an ametek 38 volt motor I bet your design will rock!! Remember blade size alters rpm I think. longer more torque and slower? smaller = faster rpm. I think...

[vicmeuk]

Thanks for this video. :-) I had one bit righht on my blades that I have seen on yours.

[EtErniaSG]

Can share the Matlab codes again?

[MaesTool]

Thank you so much for this information. I'm just about ready to cut my PVC. This is exactly what I needed.

[scovegner]

Why make it so complicated .. just mark a line 1/3 in from one end and the same on the other diagonally opposite end in a piece of guttering .. draw a line .. voila! you have 2 blades ..

[GreenEngineer07]

Good Idea, How did you come up with 1/3? With my calculations I get 1/5. In my design I could not draw a straight line between the points due to the nonlinear effective wind velocity? Will you please share with me how you found a linear solution to that problem?

Thanks, I am always looking for a simpler way to make these blades!

[dacavaz]

hola tengo un amigo que construyo una perecida ala tuya pero nole funciono por ser poco estar ting y su corte es muy brusco lo cual llevo hacia la parte masfina de la pala se doblara y no seque dara recta eso causo que no supiera para donde rotar la misma por que al doblarse secambio el pich en supunto masfino.esafue una de nuestras experiencias

[dalemi666]

Good Work!

I made my PVC blades with similar mathematical considerations, the result, as you can see in my videos was explosive!

After excel calculations I exported the generated cilindrical profiles into Autocad 2000 and I printed the shapes directly on a tape printer.

Using this tecnique I made blades with a diameter of 2.6 m.

Greetings,

Emilio

[xPnOvAkx]

thx 5 stars for u