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Open Roads Forum  >  Tech Issues

 > Interesting portable wind turbine -- looks like a barrel!

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profdant139

Southern California

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Posted: 09/30/20 05:35pm Link  |  Quote  |  Print  |  Notify Moderator

The article mentions use of this item by RVers:

Portable wind turbine

I have no idea if this is really worthwhile for the RV market.


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profdant139

Southern California

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Posted: 09/30/20 05:37pm Link  |  Quote  |  Print  |  Notify Moderator

Here's a photo of this device:

[image]
[image]Click For Full-Size Image.

Lwiddis

Camping near Pearsonville, CA

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Posted: 09/30/20 06:08pm Link  |  Quote  |  Print  |  Notify Moderator

As usual, another interesting post. Looking forward to the future.


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Bert the Welder

Van. Island

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Posted: 09/30/20 09:01pm Link  |  Quote  |  Print  |  Notify Moderator

Interesting. Might be neat if it could do double duty as a water turbine for those parked near streams.... XD


"> 1998 GMC 2500, 10.5 Okanagan, My better/smarter half, George and Finnegan(APBT), all I need.


pianotuna

Regina, SK, Canada

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Posted: 09/30/20 10:18pm Link  |  Quote  |  Print  |  Notify Moderator

There appears to be no price either.


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theoldwizard1

SE MI

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Posted: 10/01/20 03:27am Link  |  Quote  |  Print  |  Notify Moderator

It is a type of a Savonius rotor. It will pick up wind from any direction.

Simple designs use a barrel, split in half and then offset on a vertical axle.

pigman1

Delaware

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Posted: 10/01/20 08:03am Link  |  Quote  |  Print  |  Notify Moderator

Just another perpetual motion machine. You can't make more energy than was in a wind segment no matter how you redirect it, accelerate it, change it. EVERY CHANGE REQUIRES ENERGY SO OUTPUT IS ALWAYS LESS THAN INPUT.

Anyone sprinkled a little mouse milk on it? I hear that works too. Large milking herds of mice take up less room than cows, and don't fart as much.


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3 tons

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Posted: 10/01/20 09:26am Link  |  Quote  |  Print  |  Notify Moderator

pigman1 wrote:

Just another perpetual motion machine. You can't make more energy than was in a wind segment no matter how you redirect it, accelerate it, change it. EVERY CHANGE REQUIRES ENERGY SO OUTPUT IS ALWAYS LESS THAN INPUT.

Anyone sprinkled a little mouse milk on it? I hear that works too. Large milking herds of mice take up less room than cows, and don't fart as much.


Well, you might consider re-thinking this a bit - after all just think of that LARGE herd of mice under your vehicles hood that somehow seem to ‘Perpetually’ keep your starting battery charged - lol

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Fisherman

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Posted: 10/01/20 09:36am Link  |  Quote  |  Print  |  Notify Moderator

I would be nice to know the weight, output at various wind speed and cost.

pianotuna

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Posted: 10/01/20 10:07am Link  |  Quote  |  Print  |  Notify Moderator

If we assume it is the size of a barrel of oil, then the swept area would be limited to that dimension.

I believe jet engines use a constriction to increase the speed of the air, before mixing it with fuel and igniting it.

The constriction might allow a lower start up wind speed, but the opposite side of the coin is a reduction in swept area.

For example, an oil-barrel sized Savonius rotor with h=1 m and r=0.5 m under a wind of v=10 m/s, will generate a maximum power of 180 W and an angular speed of 20 rad/s (190 revolutions per minute). (from Wikepedia)

That's a wind speed of 20 mph.

I can't imagine having an oil barrel on the roof at highway speeds.

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