[RE-wrenches] SolAir Wind Turbines

[Kelly Larson]

Dear esteemed wrenches,

I am working for a school who were donated several SolAir wind turbines.  I am trying to figure out if they work.  Anyone have any experience with them?

By the swept area they are likely 250W machines, (even though they were sold as 1.6KW).  I am just wondering if they work, and how well, so we can find a use for them.

Blessings,
Kelly






On Nov 13, 2012, at 7:30 PM, Howie Michaelson wrote:

> Todd,
> That is a tall pole. Hope those were back mounted and not the Solarworld 2.0 frames! How far into the ground did you go? With how much cement? Did DP&W approve the engineering on that? My memory is they didn't approve TPM  heights much over 9'. The largest we've done are 15 module racks, but I wouldn't imagine going anywhere near that high, particularly without any specialized accommodations...
> 
> Howie
> Howie Michaelson
> NABCEP Certified PV Installer
> Catamount Solar
> www.catamountsolar.com
> 802.272.0004
> 
> Sent from my cellphone
> 
> 
> toddcory at finestplanet.com wrote:
> 
> ray,
>  
> this has been a learn by trial and error learning experience. i know 12/12 is ok and 5/12 is not... so somewhere in between those two pitch angles there is change.
>  
> the latest pole mount i did was a dpw rack with 3 kW on an 8" pole. i am attaching a 100 kb pix of this monster!
>  
> todd
>  
>  
>  
>  
>  
>  
> On Tuesday, November 13, 2012 11:12am, "Ray Walters" <ray at solarray.com> said:
> 
> HI Todd;
> 
> That's very interesting.  What roof pitch does that happen?  I'm guessing that at a step enough tilt, the frame damage is alleviated?
> Also on your tall pole mounts what pole design do you use?  I've tried telescoping type, and guy wires on tall poles.
> 
> Ray
> 
> On 11/13/2012 12:08 PM, toddcory at finestplanet.com wrote:
> I have never had good results with roof mounted pv in our heavy (mount shasta) snow area. the snow tends to creep down the glass and peel the bottom of the frame off the module... and then the glass breaks as it has no support in that area.
>  
> so, around here... i do pole mounts.... WAY up in the air.
>  
> todd
>  
>  
>  
> On Tuesday, November 13, 2012 8:04am, "Troy Harvey" <taharvey at heliocentric.org> said:
> 
> Hi all,
> We have been doing PV installs for years with L-feet and silicone without problems ever. Even still, gravity flashings seem attractive in shingle roofs, to provide a second level of security, and a more professional install (at least in perception). But the cost of these systems in significant in high snow load areas where we often have L-feet every 2 feet on center, to evenly load the structure below. In todays costs, the feet could cost as much as 33% of the panel value.
> I'm wondering what other people are doing in high snow load areas?
> Also. I have noticed that there is a flip side to the risks. We have found that unless you have good quality shingles, on a preexisting roof, that sometimes the adhesive sticking the shingles together is stronger than the low quality shingles themselves - adding risk of trying to shoe horn flashing in after the fact. Your experience?
> 
> thanks,
> 
> Troy Harvey
> ---------------------
> Principal Engineer
> Heliocentric
> 801-453-9434
> taharvey at heliocentric.org
> 
> 
> 
> 
> 
> Sent from Finest Planet WebMail.
> 
> 
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