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Mariah Wind Turbine

post #1 of 10
Thread Starter 
@ jim124, Welcome to the Huddle!

In the reviews you note, "I have seen these turbines in operation and recorded their performance first hand.  If you have wind, it is a really great product.  If not, then it is not for you.  Same goes for installing solar panels in Seattle."

As regards wind - at 5 m/s wind speeds (the annual average for almost the entire USA is less than 5 m/s) the unit power curve shows 100 watts power generation. The usual calculation is watts from the graph * 8760 hours * 0.35 a very generous capacity factor / 1000 = 3006 kWh generated per year. At 10 cent power that is worth 30$ - not very impressive! 

Where have you seen them and is there now data available from independent 3rd party trials? The last tests I saw were done by NREL and were a complete disaster. The unit failed mechanicaly and the control system failed. The Windward Engineering tests they mention on their data sheet are meaningless.  

If there is new information available we would be interested and happy to see it.




 
post #2 of 10
Hi just joined the forum.  I am interested in the windspire but I really do not know if it is worth the investment.  I happen to live near Seattle as a matter of fact.  I was thinking about mounting the windspire on a tall tower.  Are there any good small wind turbines out there for residential use in low wind areas?  I am getting pretty discouraged.  I read the skystream is no good and now it looks like the windspire is too.
Wolfie
post #3 of 10
Thread Starter 
First, welcome to the huddle Wolfie!
 
İ have yet to find a VAWT (vertical axis wind turbine) that delivers plus most are costly. Many turbine manufacturers raised their prices to take into account the incentives & subsidies also - not how it was supposed to work. To date the VAWT type of turbine still comes under the classification of ornament rather than working machine.

A windspire on a tall tower would be a good challenge! The only advantage of the VAWT type is in trying to mount the closer to the ground for maintenance purposes.

İf you are able to put up a tall tower then the HAWT (horizontal axis) is the best choice - that is providing you have the wind available.

Scirocco wind turbines are well built and a good choice. Any good turbine will be expensive. You want something from a company with years of experience - not months!
post #4 of 10
Thanks  another company I have been looking at is Bergey
post #5 of 10
Hi I just checked it out thank you very much! I had been losing hope. I will let you know how it goes with the tower I am talking to my building department in Bothell Washington USA.  I sent them lots of links on 
Ciao,http://www.awea.org/smallwind/
Jim
post #6 of 10
Thread Starter 
Hi Wolfie - Happy to be of help. Bergey is one of the older names but no turbine that İ know of will be trouble free.

For Skystream search for the document SWWP Trinity Wind Test Project

That was a disaster for the church involved.

Check www.homepower.com - most of what they have is subscription only but they have some free docs -

one is titled Apples & Oranges Choosing a home-sized wind generator
another  - Wind turbine buyers guide

Get some good data on wind speeds. The closer to your location the better. For example there are wind turbines not far from where İ live but at my exact location it will not work due to the topography - we are sheltered from the better breezes. On the bay with a great view and the local weather station says go but my weather station says no.
 
post #7 of 10
Quote:
Originally Posted by Russ View Post

 

"The only advantage of the VAWT type is in trying to mount the closer to the ground for maintenance purposes.

İf you are able to put up a tall tower then the HAWT (horizontal axis) is the best choice - that is providing you have the wind available."




The main advantage I have found for a VAWT is they are able to handle turbulance and changing winds, much more than VAWT.
In an area of varying topographt the Horizontal will tear itself apart.
That said, I have been observing a Mariah Turbine in eastern Colorado for a while, it belongs to a dealer, and I have seen it shut down in decent wind, more often than not.
 
post #8 of 10
Thread Starter 
An excellent source of information is www.wind-works.org

This is Paul Gipe's site - he one of the recognized experts in small wind.

On the site there are many articles and reports of various turbines and types. Also a very scathing article on the enviro wind which Begley and Leno are acting as shills for. 
post #9 of 10
THanks for the info  the Mariah windspire was one I was looking at too!
post #10 of 10
I  bought a book of Gipes years ago and he was spot on I am think I am going to pick up one of his books.  Thanks for the info.
Regards,
Wolfie
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