Free Republic
Browse · Search
News/Activism
Topics · Post Article

To: UpAllNight
No. You stated that one must EXPEND energy to come to a stop. I showed you that one can RECOVER energy in coming to a stop.

The act of stopping is still expending energy. There is frictional loss in the tires, drive train and heating loss in the recharge of the battery. You only expend 68% as much energy to stop assuming your energy recovery is similar to the best efficiency that a Prius (32%) claims to deliver to the road.

282 posted on 01/02/2007 9:29:21 AM PST by Myrddin
[ Post Reply | Private Reply | To 281 | View Replies ]


To: Myrddin

--The act of stopping is still expending energy. There is frictional loss in the tires, drive train and heating loss in the recharge of the battery. You only expend 68% as much energy to stop assuming your energy recovery is similar to the best efficiency that a Prius (32%) claims to deliver to the road.--

No. The act of stopping is the conversion of energy, motion into heat. If we have regenerative braking, we divert (recover) some of that energy to be used later. I don't know where you get the 32%. Battery cycle efficiency is about 85% and I really doubt that drive train losses would make up the rest.


283 posted on 01/02/2007 9:47:29 AM PST by UpAllNight
[ Post Reply | Private Reply | To 282 | View Replies ]

Free Republic
Browse · Search
News/Activism
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson