tag:blogger.com,1999:blog-16612221.post3222006012900127153..comments2024-03-19T03:14:04.172-04:00Comments on Rabett Run: FEV2Gen to support V2GEliRabetthttp://www.blogger.com/profile/07957002964638398767noreply@blogger.comBlogger9125tag:blogger.com,1999:blog-16612221.post-19428703220209084932012-05-27T23:44:59.235-04:002012-05-27T23:44:59.235-04:00Also David - new legislation trumps warranty limit...Also David - new legislation trumps warranty limitations. California did it in 2004 for hybrid batteries, so it can be done again.Brianhttps://www.blogger.com/profile/09301230860904555513noreply@blogger.comtag:blogger.com,1999:blog-16612221.post-59637839705704877022012-05-27T23:33:12.090-04:002012-05-27T23:33:12.090-04:00very1 - yes, that's true. Some vehicles may n...very1 - yes, that's true. Some vehicles may not be useful though. You might have triage the others, but this would create the triage option.<br /><br />tony - I don't know a lot, but I know someone working in that area. I tend to go for a "try everything and see what works" solution, so I'm all for trying molten salt. The inefficiency issue to my mind is all about cost.<br /><br />Russel- I've heard of that objection. I'm not certain it's a deal killer, or that it's as bad a problem as some say. Might depend partly on the economic payoff/value of storage. Also read anon's pdf:<br /><br />"the degradation <br />cost associated with the expected additional battery <br />“cycling” is likely to be very low. A more thorough analysis <br />of the trade-of between utilization rates and value of <br />balancing provided could be performed to optimize the <br />‘response function’ for a maximum net rate of return to the <br />vehicle owner, taking account of battery depreciation" (p. 11)<br /><br />Anon - seems like a mixed bag, but they do like the possibility for fleet vehicles. Getting to the limits of my knowledge here, but more smart metering may be necessary anyway, so the assumed infrastructure costs might not be right.<br /><br />David- see above.Brianhttps://www.blogger.com/profile/09301230860904555513noreply@blogger.comtag:blogger.com,1999:blog-16612221.post-37127255218734154602012-05-27T21:56:47.269-04:002012-05-27T21:56:47.269-04:00I'm not a big fan of V2G, especially for backu...I'm not a big fan of V2G, especially for backup applications. There are simply too many variables to consider it a reliable backup solution. <br /><br />A different creative approach to backup power is installing a combined heat and power (CHP) microgeneration system. That way you get some return on your capital cost even when the grid is up. A properly designed CHP system makes very efficient use of source energy. In fact, since you are looking at putting money into upgrading your backup power anyways, I would recommend investing a few hours looking into microgeneration. Maybe call Ballard (fuel cells) or Capstone (turbines).<br /><br />HAUS.MAUSAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-16612221.post-50644735681717814052012-05-27T21:25:22.780-04:002012-05-27T21:25:22.780-04:00Yes, using auto batteries is a loser for the vehic...Yes, using auto batteries is a loser for the vehicle owner. Used as described by void the warrenty on the auto batteries.David B. Bensonhttps://www.blogger.com/profile/02917182411282836875noreply@blogger.comtag:blogger.com,1999:blog-16612221.post-33337129218502457032012-05-27T14:30:16.357-04:002012-05-27T14:30:16.357-04:00Apologies, looks like the link I gave above doesn&...Apologies, looks like the link I gave above doesn't go through to the report. See:<br /><br />http://www.ricardo.com/Documents/Downloads/White%20Paper/Plug%20In%20Vehicle%20of%20Future/Bucks%20for%20balancing%20-%20can%20plug-in%20vehicles%20of%20the%20future%20extract%20cash%20%E2%80%93%20and%20carbon%20%E2%80%93%20from%20the%20power%20grid.pdfAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-16612221.post-55898955551376523852012-05-27T14:23:47.061-04:002012-05-27T14:23:47.061-04:00I really like the idea of V2G but as Russell point...I really like the idea of V2G but as Russell points out, the current state of battery technology means that it is not viable. Also the costs of a two way power supply that enables V2G are quite high. <br /><br />I have little doubt that they'll be able to lick both cycle life and cost though and would be surprised if we didn't have V2G before too long. <br /><br />A recent report looking at the situation in the UK found that there is something to EVs supplying grid balancing services (e.g. frequency control) which are currently supplied by power stations, but V2G isn't doable now:<br /><br />http://www.nationalgrid.com/uk/Media+Centre/PressReleases/2011/10.05.11+electric+vehicles.htmAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-16612221.post-80629869516672420032012-05-27T05:36:54.659-04:002012-05-27T05:36:54.659-04:00Current electric car batteries offer so limited a ...Current electric car batteries offer so limited a number of charge cycles - roughly 1,000, at such a high replacement cost as to greatly inflate the cost of withdrawing stored power from them.<br /><br />Really robust electrochemical cells , like the Al/SbCl3 ones under development could change matters, but current lithium battery cycling costs render such proposals unattractiveTHE CLIMATE WARShttps://www.blogger.com/profile/02578106673226403151noreply@blogger.comtag:blogger.com,1999:blog-16612221.post-53717155136438527832012-05-27T01:05:38.791-04:002012-05-27T01:05:38.791-04:00this does sound rgreat and I have been hearing mor...this does sound rgreat and I have been hearing more and more about this.<br />Do you know much about other storage options like molten salt?<br />I have always felt that the arguments about inefficient storage were missing the point, since solar energy is effectively limitless. Even mechanical storage would seem practical (i.e. pumping liquid slowly uphill) to me in certain situations. And the only reason petroleum is so efficient is because it took millions of years to concentrate it.tonylearnshttps://www.blogger.com/profile/15168161576867493109noreply@blogger.comtag:blogger.com,1999:blog-16612221.post-68352612254946735422012-05-27T00:36:44.747-04:002012-05-27T00:36:44.747-04:00What exactly are the water district's needs fo...What exactly are the water district's needs for backup power and vehicles during the aftermath of a major earthquake? I've got a funny feeling that you will need to send an unusual number of personnel out into the field to carry out emergency dam inspections and keep the power on for your office staff at the same time.<br /><br />Dealing with transitory blackouts is another story entirely.very1silentnoreply@blogger.com