View Single Post
  #415   Report Post  
Posted to uk.d-i-y,uk.transport
Steve Firth
 
Posts: n/a
Default 'Steam' powered cars...

The Natural Philosopher wrote:
On Wed, 04 Jan 2006 01:54:56 +0000, Steve Firth wrote:

Adrian wrote:

Indeed. If you're not 500 miles from the spare battery pack. Or do you just
carry half a ton of spare battery in the boot?

All of Drivel's theories are blown away by the poor thermal
characteristics of current battery technology. The high charge density
lightweight batteries have much lower thermal efficiencies than
lead-acid batteries.

As you wil notice if you try charging any LiIon, NiCd or NiMH battery.
See how toasty and warm it gets while charging? And feel how warm if
gets while discharging as well. It's a lose/lose technology.


You are talking as much drivel as drivel.


Ah good, proof by assertion

Then of course there's the high internal discharge of Lithium Ion
batteries to consider. If I filled the car with petrol, left it at the
airport while I went on holiday and came back to find it empty, I would
suspect theft or a leak. With a Lithium Ion powered car I can expect to
have to charge it when I get back.

Not so energy efficient.