[Cialug] tornado-proofing your data?

[Nathan C. Smith]

Wish I'd known that about the forklift batteries a month ago.  I just got a new optima blue for our panel.

-Nate

> -----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
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> >
> > -----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
> >
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> --
> ___
> Dave J. Hala Jr.
> President OSIS, Inc.
> www.osis.us
>
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