battery-less VAWT [RE-wrenches]

[Matt Tritt]

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Kelly,

Unfortunately, I get this kind of request all the time. The usual common 
component in all these requests /seems /to be that there is an architect 
involved in the project and, even though they know less than zip about 
VAWT versus HAWT technologies, surface turbulence and induced noise and 
bad vibes, they know what they like. ;-)

I might possibly know about this project as well, since I was asked to 
provide the exact same recommendation to an outfit in Portland a few 
months ago. At the time I told them that I knew of NO VAWTs that I could 
stand behind, except for the hideously expensive Ropatec from Italy, 
which I still stand behind. The thing about Ropatecs though, is that the 
well tested 3000 Watt version has some nasty vibration problems that 
would indicate (to me) that they should stay off of buildings.

The PacWind, and to the best of my knowledge all small VAWTS) are cute, 
but I sure wouldn't want to be left holding the bag when something goes 
wrong.

Matt T

Kelly Keilwitz wrote:

>Wrenches,
>An industrial customer is going for LEED certification on one of their many
>buildings. As this is a "showcase" project, the 40 KW PV proposal we've been
>asked to design/install includes bifacial module awnings and Vertical Axis
>Wind Turbines on the roof.
>
>We've already pointed out that the VAWT's won't be cost-effective. However,
>taller towers and HAWT's have been ruled-out because of height limitations.
>And, our customer wants the wind to be a visible "beacon" of their
>green-ness. Also, our company has been singled out because of our experience
>with wind (so I don't want to push the issue too much).
>
>Any recommendations of a VAWT mfr & model that can be grid-tied with a
>battery-less inverter? We'd rather not mess with batteries on this one.
>
>Thanks,
>-Kelly
>
>Kelly Keilwitz, P.E.
>Whidbey Sun & Wind, LLC
>Renewable Energy Systems
>NABCEP Certified PV Installer
>987 Wanamaker Rd, 
>Coupeville, WA 98239
>PH & FAX 360-678-7131
>sunwind at whidbeysunwind.com
> 
>
>
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