[Cialug] tornado-proofing your data?

Thu May 29 09:18:26 CDT 2008

Is the  horizontal axis wind generator  one of those Helical / S curve models
I seen on Science Channel or what ever channel it was on, that
was in Chicago IL? Some professor at the Illinois University of
Chicago was experimenting with the concept. They've got them
in use at some buildings down town Chicago I guess.

They only run 380 RPM regardless of wind speed I guess and
they take much less wind to turn than these big a$$ fan types they're
putting up all around here. Plus they don't vibrate or throw parts off.
They can stand vertical or lay horizontal too.

I've been looking for info or a link to those.

----- Original Message ----- 
From: "Dan Hockey" <icepuck2k at mchsi.com>
To: "'Central Iowa Linux Users Group'" <cialug at cialug.org>
Sent: Wednesday, May 28, 2008 6:57 PM
Subject: RE: [Cialug] tornado-proofing your data?

> If you are serious about using a liftruck battery look into the
> Exide/Enersys Loadhog series, stay away from the sealed gel cell batteries.
> The Loadhog batteries are more money but last longer than Deka and some
> other cheaper batteries. The company that I used to work for use to have
> clow valve for a customer, they had some Loadhogs that were 14-15yrs old,
> and that was in an electric forklifts.
> The Enersys rep that I used to deal with at the time was planning his system
> around 48v 1100ahr Loadhog(3800lb) battery. He figured about a 20yr life
> span because it was for a stationary use and the battery wasn't being
> bounced around.
> -dh     
> 
> 
> -----Original Message-----
> From: cialug-bounces at cialug.org [mailto:cialug-bounces at cialug.org] On Behalf
> Of Dave J. Hala Jr.
> Sent: Wednesday, May 28, 2008 8:46 AM
> To: Central Iowa Linux Users Group
> Subject: RE: [Cialug] tornado-proofing your data?
> 
> 
> You forget...I'm a bohemie with a welder. I'm fairly confident that I
> would not build a structure to hold all those pv panels.  I'd probably
> build a frame using a 14ga 1in box steel and 18ga sheet stock. I'd put
> it 6-8 inches off the ground (so the bunnies could have a home) and then
> I'd put up a 50in tall cattle panel fence around it to keep the dogs off
> of it.  I realize that dogs and bunnies don't mix, but if you have an
> ample supply of de-wormer and bunnies, you have happy dogs.
> 
> I've just finished the mockup of a prototype 2kw (in 25 mph wind)
> horizontal axis wind generator that sits on the ground. Photos will be
> available as soon as its painted and spinning in the back yard.
> 
> I'd use an Outback systems inverter to combine the two seperate power
> sources and charge the battery. I wouldn't use the optima batteries.
> They cost too much and only have a 3-5 year life. I'd purchase a 24 volt
> forklift battery that has been recently taken out of service. There have
> been numerous reports of re-purposed forklift batteries being used with
> wind turbines and being in service in excess of 15 years.
> 
> :) Dave
> 
> On Wed, 2008-05-28 at 08:21 -0500, murraymckee at wellsfargo.com wrote:
>> That's assuming that you built a structure strong enough to hold the
>> panels against the wind during the storm.  And even if the frame holding
>> the panels survived you'd have to contend with the panels being blown
>> out of the frame.  
>> 
>> Murray McKee 
>> Operating Systems Engineer
>> WFFIS - Wells Fargo Financial Information Systems 
>> 800 Walnut Street
>> MAC F4030-037
>> Des Moines, IA 50309-3605
>> WORK (515)557-6127 Cell (515) 890-9660  FAX (515) 557-6046
>> MurrayMcKee at WellsFargo.com 
>> "This message may contain confidential and / or privileged information.
>> If you are not the addressee or authorized to receive this for the
>> addressee, you must not use, copy, disclose, or take any action based on
>> this message or any information herein.  If you have received this
>> message in error, please advise the sender immediately by reply e-mail
>> and delete this message.  Thank you for your cooperation."
>> 
>> -----Original Message-----
>> From: cialug-bounces at cialug.org [mailto:cialug-bounces at cialug.org] On
>> Behalf Of Dan Hockey
>> Sent: Tuesday, May 27, 2008 11:11 PM
>> To: 'Central Iowa Linux Users Group'
>> Subject: RE: [Cialug] tornado-proofing your data?
>> 
>> * Backup onto a remote server located in the underground fruit cellar in
>> the
>> back yard.
>> *Use a combination of a solar/wind power the power it.
>> *Since you only need about 500 watts, you could do this for a reasonable
>> cost.
>> 
>> Have you priced solar panels and batteries lately?
>> 
>> 500 watts x one hour = 500w/hr or 0.500Kw/hr
>> 0.5Kw/hr x 24hrs = 12Kw/hr <- and that's just for one day.
>> 
>> Now for the battery pack..
>> Using the Optima blue top (55ahr) for this example.
>> 
>> (55ahr x 12v) / 1000
>>          660  / 1000
>>          =0.66Kw/hr just for one battery.
>> 
>> 55ahr x 20 = 1100ahr
>> 
>> (1100ahr x 12v / 1000 = 13.2Kw/hr
>> 
>> 1 battery = $169.95 x 20 = $3399.00
>> 
>> Keep in mind your solar array is going to be 2x to 3x larger in order to
>> charge the battery bank with the ~4hr of useable sunlight(for ia) for
>> fixed
>> solar panels.
>> As you can see this is starting to get expensive to keep your data safe,
>> that doesn't include the inverter and charge controller. You will be the
>> only one in town with the highest uptime after the tornado blows
>> through.
>> -dh   
>> 
>> _______________________________________________
>> Cialug mailing list
>> Cialug at cialug.org
>> http://cialug.org/mailman/listinfo/cialug
>> 
>> _______________________________________________
>> Cialug mailing list
>> Cialug at cialug.org
>> http://cialug.org/mailman/listinfo/cialug
> -- 
> ___
> Dave J. Hala Jr.
> President OSIS, Inc.
> www.osis.us
> 
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> http://cialug.org/mailman/listinfo/cialug
> 
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> http://cialug.org/mailman/listinfo/cialug
> 
>