On 28 Dec 2017 at 5:05, ROBERT via EV wrote: > I do not know who does your math. The email states "Leaf gets 4.5 miles per > kw at 55mph more or less depending on wind." Therefore, 1000 W / 4.5 miles = > 222 W per mile. This appears to be a little low to me. However, if it is > accurate, you would need 222 W to go one mile.
First of alll, that should be kilowatt hours (KWH) and watt-hours, not just watts. Watts per mile is a meaningless unit. Saying your EV uses 222 watts per mile is like saying your ICEV uses 120 horsepower per mile. Second, I don't see anything wrong with the math in the message you're replying to. My only quibble would be with "you would need a minimum input of 12,220 watts." I would say that he needs a minimum AVERAGE input of about that amount of power. Others have posted the amount of square PV area needed, so I won't rehash that. I'll just remind you that the sun doesn't shine 24 hours a day, and that insolation is lower on cloudy days and in the winter. Even if you can design a trailer to keep your EV going 55 at noon on a clear summer day, what will you do at other times? Putting PVs on a vehicle (or its trailer) probably isn't the most efficient use of your PV dollars. Is it really worth it? Your call. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
