Hi Dan Are there any wind machines you would recommend?
Jay Peltz Power > On Apr 1, 2021, at 1:34 PM, Dan Fink <[email protected]> wrote: > > > Chris; I would be kicking and screaming regarding installation of anything > provided by that company, including their turbines, controllers, and > diversion load heaters. They don't seem to have a grasp on even the basic > concepts of successful small wind installations. They don't provide power > curves or performance data, and don't seem to understand the physics behind > how the number of blades, tip speed ratios, etc. relate to output > performance. That "1.6 kW" turbine your customer wants has only a 5-foot > diameter rotor! 1.6 kW in a 60 mph wind maybe. > > How tall does the tower need to be to get at least 30 feet above any > obstructions within 500 feet, and will the system need AHJ permits? Anything > under 40 feet is a waste of the homeowner's money. > > You can get steel tower coupling sections fabricated and use standard steel > tubing (NOT pipe) for the tower sections. These are easy to work with, and I > have even seen them approved and wet stamped by engineers, up to ~80 feet > anyway. (photo attached) > > SWWP used to sell metal couplers to fit standard pipe, which made for a > noodly tower, but it was OK, and engineered that way, and has engineering > drawings. Not sure if anyone still makes those, perhaps the Indian company > that bought out SWWP's designs? I'm guessing you have a DIY type homeowner > and that they won't want a tall tower (sigh). > > Another option is surplus NRG towers, which have swaged ends that slide > together, and guy wire rings that slide over the joints. I've seen these > successfully fly fairly large turbines approaching 150 feet tower height. Not > engineer-stamped for that application though, they are MET towers. And > probably WAY more sturdy and expensive than what you need for that dinky "1.6 > kW" turbine. > > If you can't decline the job, I'd go with couplers, either fabricated with > and for steel tubing, or those SWWP couplers if you can find them. > > Dan Fink > Owner, Buckville Energy Consulting LLC > IREC Certified Instructor for PV and Small Wind Installation > NABCEP Certified PV System Inspector > NABCEP PV Associate > [email protected] > 970-672-4342 > > > > >> On Thu, Apr 1, 2021 at 12:43 PM Chris Schaefer <[email protected]> >> wrote: >> G'day All, >> >> We don't seem to see much on wind these days on the wrenches, so now is the >> time to blow out some of the cobwebs. Anyway, I'm getting dragged kicking >> and screaming into a Missouri Raptor 7 blade Freedom 1.6kw offgrid wind >> project and in search of a tilt up tower. Back in the day it would have come >> from SWWP but now I haven't a clue. The client already purchased the turbine >> but if you have any experience with this unit and things to be aware of that >> would be appreciated as well. System voltage is 48vdc. >> >> Stay healthy my friends, >> Christopher- >> Chris Schaefer’s >> >> Tel/Fax 585-229-2083 or Cell 585-748-1870 >> 5115 South Hill Road ~ Canandaigua New York 14424 >> www.solarandwindfx.com ~ E-mail: [email protected] >> >> >> >> Thomas Jefferson, the author of our great Constitution, once said, >> "democracy" will cease to exist when you take away from those who are >> willing to work and give to those who would not." >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/[email protected]/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> > > <oc15#0041.tif> > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/[email protected]/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org >
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