Robb Cary was dealing with a lot of large scale telecomm systems with C&D Technologies, so his scary photos were probably not from solar projects, (if that is any comfort!) He spoke of some projects with 50,000 2V industrial cells. I have worked with him for a long time and served on the board of Solar Sebastopol with him 5-6 years ago. I too have lost touch. I tried to reach him four or five years ago but his office said that he was retired and his cell number was disconnected.
Nick Soleil Project Manager Advanced Alternative Energy Solutions, LLC PO Box 657 Petaluma, CA 94953 Cell: 707-321-2937 Office: 707-789-9537 Fax: 707-769-9037 ________________________________ From: Darryl Thayer <daryl_so...@yahoo.com> To: RE-wrenches <re-wrenches@lists.re-wrenches.org> Sent: Wed, December 15, 2010 9:14:15 AM Subject: Re: [RE-wrenches] Battery based hydrogen incidents Yes they happen, Robb Cary of Battery Testing Co. has some frightening photos. I have lost contact with him however. I have had an experiance, but I did not take pictures. When you find the top of the battery and or battery enclousure blowen to smitherens it was a hydrogen explosion. Sorry I am on road today, would love to comment more. maybe later Darryl --- On Wed, 12/15/10, Warren Lauzon <war...@wind-sun.com> wrote: >From: Warren Lauzon <war...@wind-sun.com> >Subject: Re: [RE-wrenches] Battery based hydrogen incidents >To: "RE-wrenches" <re-wrenches@lists.re-wrenches.org> >Date: Wednesday, December 15, 2010, 11:05 AM > > > >In the 30+ years that we have been in the solar business, we have never seen >or >even heard of a single one. > >From: Dana >Sent: Wednesday, December 15, 2010 9:10 AM >To: 'RE-wrenches' >Subject: [RE-wrenches] Battery based hydrogen incidents > 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 - d...@solarwork.com >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:re-wrenches-boun...@lists.re-wrenches.org >[mailto:re-wrenches-boun...@lists.re-wrenches.org] 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: 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 > > >Northern Arizona Wind & Sun - Electricity from the sun since 1979 >-------------------------------------------------------------------- >Online Solar Store >Free Solar Discussion Forum >-------------------------------------------------------------------- >-----Inline Attachment Follows----- > > >_______________________________________________ >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 > >
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