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Politics : The Environmentalist Thread -- Ignore unavailable to you. Want to Upgrade?


To: maceng2 who wrote (22556)7/30/2008 2:14:51 PM
From: Maurice Winn  Read Replies (1) | Respond to of 36921
 
PB, you obviously didn't read the fine print right at the beginning of the post: <Major power stations are so vastly more efficient than mobile little Otto cycle or Diesel engines in cars that even with line losses, which aren't great if the power stations are built by or in cities, it's a LOT more efficient to generate electricity centrally and ship it to vehicles than to generate it on-board. >

Note that I'm not suggesting hauling electricity from New York to San Diego. I specifically suggested power stations be built IN cities. Maybe right there INSIDE apartment buildings so that all the heat is used for space heating.

Waste heat from a nuclear reactor on the east coast of the USA is popular with manatees who like to wallow in the warm water.

Environmentalists must hate that - humans improving lives for animals. Of course they would argue that the left footed cold water serendipitous mud crab gets their habitat ruined by the warm water so it's a bad thing really.

I haven't mentioned the improved efficiency of electric motors instead of the power plant and drive train of normal cars.

After being produced in large, efficient power stations and being shipped to battery swap stations with a bit of line loss [say 5%], the electricity energy is delivered to the wheels with 80% efficiency in the vehicle.

That's a LOT better than the horrid Otto cycle effort, or Diesel cycle. AND with electric motors, regenerative braking is a free energy source not available on regular vehicles. Regenerative braking is trivial, but a little bit of help in keeping efficiency up.

Mqurice