>> I find watts/mile a bit like measuring gas in teaspoons/mile. > >Watts per mile is kind of like horsepower per furlong. It's a meaningless >unit, because Watts measure power, not energy. > >You probably mean watt-HOURS per mile - which, for better or worse, is still >something of a standard in the EV hobbyist community, even if the automakers >don't use it. > >I think the main objective should be to use a standard measurement. That >way potential customers can compare EVs' efficiency, as they can with ICEVs >(the few who care, that is).
I like to use watt-hours per mile as it gives a more accurate measure of efficiency, but then I'm detail oriented. One of my EV's gets 426 whr per mile and another gets 185. It's no harder to calculate than saying 2.35 miles per Kw or 5.4 miles per Kw. If you round it too much it loses a lot of accuracy, and we're not talking 400 miles on a fillup either. Everyone knows what gasoline costs per gallon but few ICE drivers know what they pay per KWH for electricity. It certainly gets some of them to thinking after they get to the "Wow" part of the conversation when educating someone on the economics of driving electric. Jim - Glendale, AZ (where electricity is 4.125 cents per Kw after 9pm) www.evalbum.com/1703 -------------------------------------------------------------------- mail2web.com – Enhanced email for the mobile individual based on Microsoft® Exchange - http://link.mail2web.com/Personal/EnhancedEmail _______________________________________________ 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)
