[RE-wrenches] Air conditioning for batteies in high temperature climate

[bob ellison]

I believe Roy has a customer with a huge battery bank that air conditioned
the battery room. He ran the numbers and the air conditioning actually made
sense.

 

Bob Ellison

 

From: re-wrenches-bounces at lists.re-wrenches.org
[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of R Ray
Walters
Sent: Thursday, April 21, 2011 4:50 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] Air conditioning for batteies in high temperature
climate

 

Are you using temperature compensation? It lowers the voltage when its hot.

Also, have you considered setting the batteries in a below ground vault?
I've had good luck with in floor battery boxes.

Finally, AGMs and L16s just don't last very long anyway. AGMs maybe 3 years,
and L16s I've seen die in under 5 years and we get to 15 below zero.

My suggestion: temp comp, ground vault, HUP or equivalent cycle life.

 

R. Walters

ray at solarray.com

Solar Engineer

 

 





 

On Apr 21, 2011, at 1:22 PM, Starlight Solar, Larry Crutcher wrote:





Hello Battery Wrenches,

 

Over the years I have had several battery banks in Baja and Sonora Mexico
fail in just 36 to 48 months. These have been L16 or 8D AGM or flooded
banks, 24 and 48 volt systems. The charging systems are working properly and
programmed to manufacturer recommended set points and discharges are rarely
over 30% DoD.  Some batteries are only used on weekends, some are discharged
daily.  I believe what is affecting the short life is the high temperature
they live in for 5 months each year. Temps. can hit 115 F in vented battery
rooms. I have been thinking about a small air conditioner and insulated
battery box to keep the battery at no more than 80 F. There are some
portable units that draw about 600 watts and the run time would be very
little with a highly insulated enclosure. There is ample power to do this on
the home I am changing batteries in now. Has anyone done this and gained
longer battery life?

 

Best Regards,

Larry Crutcher
Starlight Solar Power Systems <http://www.starlightsolar.com/> 

powered by STARLIGHTT

_______________________________________________
List sponsored by Home Power magazine

List Address: RE-wrenches at 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 <http://www.members.re-wrenches.org/> 

 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20110422/038054a7/attachment-0003.html>