View Single Post
Old 08-11-2011, 01:36 PM   #52 (permalink)
gone-ot
...beats walking...
 
Join Date: Jul 2009
Location: .
Posts: 6,190
Thanks: 179
Thanked 1,525 Times in 1,126 Posts
Quote:
Originally Posted by jamesqf View Post
But in the long run, it doesn't matter how fuel efficient trucks or diesel-electric trains are, if we don't have the fuel.

OTOH, I figured out once that you could run the current US rail system by building just 19 1 GW reactors - and that's just 1-1 replacing the energy from current diesel, without figuring the higher efficiency of electric, and the recapture of braking energy on the downgrades.

I sometimes see trains belching diesel smoke while going over Donner Pass, one struggling uphill westbound from Reno, another eastbound from Sacramento, and wonder why no one can seem to see that two electric trains, timed right, could do it practically for free.
...electrify those RAILS...fry the little forest creatures (ha,ha).

...have you thought about the HUGE resistance differences between COPPER or SILVER conductors and STEEL/IRON railroad tracks? Might be good for clearing the railroad tracks during winter snow storms though!

...although, if lightweight SUPER-CAPACITORS can be developed to "hold" the charge, maybe sufficient down-hill regeneration energy could be captured during steep down-hill grades to offset "some/most" of the energy required on the next up-hill grade? Basically, a BIGGER version of the GM e-boost system using CAPACITORS instead of BATTERIES to "hold" the energy between recovery and reuse.

Last edited by gone-ot; 08-11-2011 at 01:44 PM..
  Reply With Quote