Hi Dana, I've been 16 years all offgrid, no reports that I know of.
jay peltz power On Dec 15, 2010, at 8:10 AM, Dana wrote: > Ken – > > To meet the flow have run 2 and 3 fans to meet the flow. 2” output from the > fan into a 4” header with a matching 2.5” inlet as far away on the lowest > portion of the battery box. > > > In 22+ years in off grid installations I have yet to see or even hear of one > hydrogen explosion. I get repeatedly asked why we have to go to the efforts > we go to for box and venting. I am not able to provide even one incident that > I have heard rumor of. > > Q - How many battery based hydrogen incidents have happened in our collective > experience? > > > > Dana Orzel > Great Solar Works, Inc > E - [email protected] > V - 970.626.5253 > F - 970.626.4140 > C - 970.209.4076 > web - www.solarwork.com > > "Responsible Technologies for Responsible People since 1988" > Do not ever belive anything, but seriously trust through action. > > From: [email protected] > [mailto:[email protected]] On Behalf Of Kent Osterberg > Sent: Tuesday, December 14, 2010 12:07 PM > To: Wrenches > Subject: [RE-wrenches] Battery Venting > > Fellow Wrenches, > > The discussion about battery venting reminds me of a useful and inexpensive > program, BattMV, for determining ventilation requirements per EN-50272. > EN-50272 is a European standard used to determine how much air flow is needed > for a room, I don't know of a equivalent standard used in the U.S. It takes > a surprising amount of ventilation. For a 400-AH 48-volt L16 bank charged at > 57.6 volts and 24 amps, it's about 7 CFM just to keep the %H2 down to 4%. A > 12-volt Zephyr vent is good for about 5 CFM! If you think you are venting > enough, take some time and study this issue. > > Kent Osterberg > Blue Mountain Solar > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > 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 >
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