This is not for typical home use but utility-size equipment. Utilities are used to dealing with stuff like this and if the waste is significant enough to cost money then they will make sure that the designer of the equipment knows what to design for. Not that the typical building transformer is particularly efficient, even though it *can* be - I am always amazed when I walk into the utility room and am greeted with a loud hum and a lot of heat because the building transformer is almost cooking hot.... Since that waste is likely paid by the customer since it is *after* the meter, the utility does not care much. But I expect that if it is unmetered then they *do* care about waste. However, if the electricity cost to the utility is about $1 and they can charge $10 or $20 for a flash fillup then they probably do not care much about 20% waste of that $1....
BTW, note that *every* ICE has a waste heat in the order of 100kW when running at freeway speed and they can easily do this for hours at a time so apparently that amount of waste is not so big a deal for a 3-min period if you see it in that perspective. Use the radiator of an ICE and you can cool the 400kW charger while still being *way* more efficient than an ICE. Cor van de Water Chief Scientist Proxim Wireless Corporation http://www.proxim.com Email: [email protected] Private: http://www.cvandewater.com Skype: cor_van_de_water XoIP: +31877841130 Tel: +1 408 383 7626 Tel: +91 (040)23117400 x203 -----Original Message----- From: [email protected] on behalf of Ed Blackmond Sent: Wed 6/5/2013 8:17 PM To: Electric Vehicle Discussion List Subject: Re: [EVDL] EVLN: Flash charging set to revolutionize EV travel(video) I'm not sure sweet is the word I would use. A 400KW charger is going to be lucky to be 80% efficient. That means 500KW going into it and 100KW wasted as heat. How much energy is going to be needed just to cool it? The oven in my kitchen is only 5KW and it gets very hot in 3 minutes. I suppose if you were into pottery, you could fire your works while charging the car. Now imagine a charging station with 10 charging spots. That's 5MW with 1MW dissipated as heat. They would probably love it in the upper midwest in the winter. Ed On Jun 5, 2013, at 4:47 PM, Cor van de Water wrote: > The 400kW charger would top up 80% of the Leaf pack (20 of the 24 kWh) > in 1/20 hour, which is 3 minutes. Sweet. > > Cor van de Water > Chief Scientist > Proxim Wireless Corporation http://www.proxim.com > Email: [email protected] Private: http://www.cvandewater.info > Skype: cor_van_de_water Tel: +1 408 383 7626 > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of brucedp5 > Sent: Wednesday, June 05, 2013 1:12 AM > To: [email protected] > Subject: [EVDL] EVLN: Flash charging set to revolutionize EV travel > (video) > > > http://www.dvice.com/2013-6-3/flash-chargers-set-revolutionize-travel-el > ectric-vehicles > [image] Flash chargers set to revolutionize travel by electric vehicles > Colin Druce-McFadden June 3 2013 TOSA 2013, via Inside EVs > > [image > http://www.dvice.com/sites/dvice/files/styles/blog_post_media/public/TOS > A%2Bbus_Geneva.jpg?itok=bIPvXMaQ > Credit: TOSA > > > video > http://youtube.com/watch?v=OaU1rL7IhM4 > TOSA2013 (English version) > busTOSA2013 May 25, 2013 > TOSA is the first full electric articulated bus that runs without > overhead > lines. With it's so called "flash charging", it recharges at the bus > stop > along the route in a record time of 15 seconds. > ] > > The TOSA project is a mass-transit system that aims to revolutionize the > electrical vehicle market, beginning with electric buses. Designed in > cooperation with public transport authorities in Geneva, the TOSA > project is > a system of specially-equipped electric buses and flash chargers - > capable > of juicing up a bus in only minutes. > > The bus-riding experience for the average commuter would stay precisely > the > same, but the buses would never need to be pulled from service as they > charged. Last Sunday a prototype TOSA bus took to the streets for the > very > first time. Its route is a modest one, covering less than a mile of > roadway. > But for a prototype, that's not half bad. Especially considering that > the > bus's flash charger takes only 15 seconds to top off the batteries on > the > 135-passenger behemoth. > > Even at the end of the line, when the TOSA bus receives its largest > jolt, > recharging the bus lasts only 3-4 minutes. That the TOSA bus is equipped > with a battery pack similar to that in a Nissan Leaf broadens the > theoretical use of these flash charging stations quite a bit. > > Imagine gas stations across the nation being equipped with flash > chargers. > Suddenly the spirit of the open road could call to EVs in much the same > way > that it does to long-haul truckers. The only difference would, of > course, be > that EV owners would spend less time at the pump. For more detail on the > TOSA project's future plans, check out the video below. > [(c)2013, DVICE] > ... > http://www.tosa2013.com/en#/tosa2013 > > > > http://www.thegreencarwebsite.co.uk/blog/index.php/2013/06/04/how-to-cha > rge-an-electric-bus-in-15-seconds/ > How to charge an electric bus in 15 seconds > Paul Lucas Jun 04 2013 > > > > http://www.greenoptimistic.com/2013/06/04/electric-vehicle-flash-charger > -recharges-an-electric-bus-in-just-15-seconds/#.Ua6iCtgW7Mo > Electric Vehicle "Flash Charger" Recharges an Electric Bus In Just 15 > Seconds > By Benji Jerew on June 4, 2013 > The TOSA electric vehicle Flash Charger is mounted on the roof of the > bus > and is rated at 400kW. By charging at such a high rate, the bus operator > can > keep ... > > > > > For all EVLN posts use: > http://electric-vehicle-discussion-list.413529.n4.nabble.com/template/Na > mlServlet.jtp?macro=search_page&node=413529&query=evln&sort=date > > Here are today's archive-only EV posts: > > EVLN: Nissan to launch Leaf EV in SA > EVLN: EDF asks fleet managers to help with plugin normalization > EVLN: Road Worrier, NC taxes the non-stinkers > EVLN: Conti/Oerlikon JV develop EV transmissions > + > EVLN: EVs are getting as cheap as ice rivals, a comparison review > > > {brucedp.150m.com} > > > > -- > View this message in context: > http://electric-vehicle-discussion-list.413529.n4.nabble.com/EVLN-Flash- > charging-set-to-revolutionize-EV-travel-video-tp4663412.html > Sent from the Electric Vehicle Discussion List mailing list archive at > Nabble.com. > _______________________________________________ > 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) > > _______________________________________________ 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)
