The batteries catching fire is already a lower probability fault and it will improve. Far lower than fires with gasoline.
I think these two safety issues, battery fires and H tanks blowing up are non-problems that have effective tech fixes.Transporting energy to individual cars is not much to worry about with electric power convenient means exist. Production and "transport" can be in your own yard. But transporting H is not even begun. Lossy electrolysis could be done at home from PV, but that is economically a non-starter with pressurized storage. If a dense AND low pressure means is developed that is nice. But it sounds like a pipe dream. Hydrogen on a film? Intuition tells me that's not going to be nearly dense enough. Aren't batteries up near 300Wh per kg now (I just saw a new product claim of 350)? Musk has said aircraft can work at 400Wh/kg, economically. On Sun, Aug 15, 2021 at 10:23 PM Mark Abramowitz via EV <[email protected]> wrote: > MUCH better chance of a battery catching fire than a hydrogen tank > exploding. In fact, the latter is unlikely to happen. The former, it > happens all the time. > > - Mark > > Sent from my Fuel Cell powered iPhone > > > On Aug 15, 2021, at 1:03 PM, Robert Bruninga via EV <[email protected]> > wrote: > > > > But then there is still the 30% loss in inefficiency in all the heat > loss in > > compressing the hydrogen into tanks. (and hoping it wont explode). > > Bob > > > >> On Sun, Aug 15, 2021 at 3:39 PM Michael Ross via EV <[email protected]> > wrote: > >> > >> From the WIKI: > >> "Considering the industrial production of hydrogen, and using current > best > >> processes for water electrolysis (PEM or alkaline electrolysis) which > have > >> an effective electrical efficiency of 70–80%" > >> I actually thought 70% was as good as it gets, but they think in > another > >> 10 years it might be in the upper 90%'s. > >> > >> I recall that the combustion of hydrogen was also pretty lossy. SO a > lot of > >> inefficiency coming and going with H. I will try to find where I got > that > >> idea and write back. The discussion was to the effect that combining O2 > and > >> H2 could never be better than some ceiling %. > >> > >> On Sun, Aug 15, 2021 at 3:20 PM Mark Abramowitz via EV < > [email protected]> > >> wrote: > >> > >>> Gee, a lot of incorrect stuff to reply to. > >>> > >>> Not incorrect, but you think that PSI is less confusing to use than > bar? > >>> Then it’s 10,000 PSI. As far as your description of what it is - > frankly, I > >>> hadn’t a clue what you were talking about. Your numbers seem to be > >>> confusing a point. > >>> > >>> Manufacturing defects in a Camry? I’m not sure what you are talking > about. > >>> No Camrys involved. Tanks get tested. If you are trying to imply that > they > >>> are dangerous, well so is everything. Risks get managed. Some get > managed > >>> better than others. Batteries have their own risks, too, as does any > other > >>> energy storage mechanism. > >>> > >>> Fuel cell lifetime of 2,000 hours? Care to provide a source? It’s just > not > >>> true. > >>> > >>> Electrolysis not very efficient? What do *you* consider “not very > >>> efficient”? What do you consider acceptable efficiency? > >>> > > _______________________________________________ > Address messages to [email protected] > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > -- Michael E. Ross (919) 585-6737 Land (919) 901-2805 Cell and Text (919) 576-0824 <https://www.google.com/voice/b/0?pli=1#phones> Tablet, Google Phone and Text -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210816/f11d94b8/attachment.html> _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
