Allan......very good point...I had not thunk that far......It will probably be a good difference in temp. too.....I am not quite sure how we would address that as the system will only have one charging source and 2 strings of batteries.....one on the top shelf and one on the bottom....???? Any ideas? I my initial inclination would be to lean towards putting the temp sensor on the top string as over heating of the battery bank due to over charging is probably a bigger concern than being very cold as this is in a residential garage with out much insulation in relatively mild wintered Oregon.... Thanks to all for their ideas and recommendations....this list and its members are definitely a priceless resource.....I would gladly share my chantrelle mushroom loot i just pulled out of the forest with you all were you here right now! Cheers....
-- Sunny Regards, Kirpal Khalsa NABCEP Certified Solar PV Installer Renewable Energy Systems www.oregonsolarworks.com 541-218-0201 m 541-592-3958 o On Mon, Oct 19, 2009 at 1:12 PM, Allan Sindelar < al...@positiveenergysolar.com> wrote: > Kirpal, > > Keep in mind variations in upper- and lower-bank temperatures from ambient > heat stratification if the batteries are in an indoor space. This affects > relative SOC among strings, affecting string life. > > > > Allan Sindelar > > al...@positiveenergysolar.com > > NABCEP Certified Photovoltaic Installer > > EE98J Journeyman Electrician > > *Positive Energy, Inc.* > > 3201 Calle Marie > > Santa Fe, New Mexico 87507 > > 505 424-1112 > > www.PositiveEnergySolar.com <http://www.positiveenergysolar.com/> > > > > *From:* re-wrenches-boun...@lists.re-wrenches.org [mailto: > re-wrenches-boun...@lists.re-wrenches.org] *On Behalf Of *Kirpal Khalsa > *Sent:* Monday, October 19, 2009 1:47 PM > *To:* RE-wrenches > *Subject:* [RE-wrenches] Battery Racks > > > > Hi All.....anyone have any experience with battery racking systems for big > banks of flooded lead acid batteries? Typically we don't like to stack > flooded batteries but we may not have space for as big of a bank as we need > if we don't stack......Any one know of a company that engineers racks that > are seismically sound, have the ability to have spill containment all while > maintaining some accessibility? I know DPW makes battery racks but looking > at their web site they are typically smaller than what we need..... > We need to support roughly 7000lbs.....and are exploring if this is even > doable.... > Cheers and thanks! > > -- > Sunny Regards, > Kirpal Khalsa > NABCEP Certified Solar PV Installer > Renewable Energy Systems > www.oregonsolarworks.com > 541-218-0201 m > 541-592-3958 o > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > > -- Sunny Regards, Kirpal Khalsa NABCEP Certified Solar PV Installer Renewable Energy Systems www.oregonsolarworks.com 541-218-0201 m 541-592-3958 o
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