On May 21, 2014, at 9:05 PM, EVDL Administrator via EV <[email protected]> wrote:
> On 21 May 2014 at 17:26, Mike Nickerson via EV wrote: > >> If you start with fossil fuels, the efficiency is more balanced. You lose >> quite a bit of the energy in the generation plant, or the hydrogen >> production and fuel cell, but it is about the same in both cases. > > You may be right, though my observation has been that the calculations for > system efficiency are so complex that they're easily nudged to reach a > particular desired conclusion. (I'm not saying that you're doing that here, > just that in general I don't fully trust these numbers.) > > As I see it, one of an EV's major advantages is its ability to use > electrical energy produced from many different sources, including renewable > ones. Same as with FCEVs. > > > Storing energy from PVs and dumping it into an EV is actually reasonably > practical right now. You can do it by using the grid as a giant storage > battery with grid-intertie PV. (A turnaround efficiency calculation for > grid intertie will be left as an exercise for the reader. ;-) > > OTOH, it's much more of an enterprise to run an FCV (or even a modified > ICEV) on sunlight you harvest with your own PVs. Currently, yes. But this is an emerging tech. In the mid to long term, probably not. > > OK, you COULD make H2 at home through electrolysis and compress it. But > you'd need a lot of PV real estate, and a substantial quantity of extra > hardware. > > Now, if you're a fossil fuel extractor, this idea that vehicle users might > be able to make their own fuel is not a good thing. Heck, you don't even > want people charging their EVs from hydropower or even coal-generated > electricity. You want them to buy YOUR fuel. > So, FCVs are exactly what you want. They're ZEVs, so they satisfy the CA > requirement (and any other legislative mandates in other lands). However, > the users are effectively locked in to the same old model : go the the > filling station, pay the filling station money, repeat. You keep > transportation dependent on fuels that the users purchase from you. Their > money keeps flowing to you and your stockholders. Who cares? You can do it either way. > > It doesn't take much to see why FCVs are being pushed so hard in the media, > and I'm not even wearing a tinfoil hat. Interesting. I see EVs as being pushed in the media. I see great stuff out there. That's the intent. > > David Roden > EVDL Administrator > http://www.evdl.org/ > > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use NEDRA > (http://groups.yahoo.com/group/NEDRA) > > _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
