On 3/19/2013 11:56 AM,
bobg...@cox.net wrote:
> From Wiki:
>
>
https://en.wikiquote.org/wiki/Thomas_Edison
>
> We are like tenant farmers chopping down the fence around our house for fuel when we should be
> using Nature's inexhaustible sources of energy — sun, wind and tide. ... I'd put my money on the
> sun and solar energy. What a source of power! I hope we don't have to wait until oil and coal run
> out before we tackle that. In conversation with Henry Ford and Harvey Firestone (1931); as quoted
> in Uncommon Friends : Life with Thomas Edison, Henry Ford, Harvey Firestone, Alexis Carrel &
> Charles Lindbergh (1987) by James Newton, p. 31
While President Obama would like to eliminate gasoline-powered vehicles, such vehicles still
provide major advantages for consumers. Pound-for-pound, the energy stored in the chemical bonds of
gasoline is about 100 times the energy stored in today’s Lithium-ion batteries. This translates into
about a ten-to-one advantage in driving range for gasoline vehicles.
If electric cars succeed, look for magazine lounges at charging stations. Gasoline fill-ups
require two to three minutes for small cars and four to five minutes for SUVs. The best 440-volt
commercial charging stations require a driver to charge an EV for 30 minutes or more.
Electric car owners who drive every day are in for a surprise. Their battery pack will need to be
replaced. Batteries are based on a chemical imbalance, a separation of charge that produces the
electrical potential. The day an electric leaves the showroom, chemical reactions are at work to
remove the charge from your lithium-ion battery. Faster charging, frequent charging, warmer
temperatures, and storage at full charge degrade the battery more quickly. Either the owner or the
manufacturer will need to pay for a $10,000 battery replacement about year four or five.
But can’t an EV purchaser take pride that his car reduces global warming? Well, not really. A
study last year by the Norwegian University of Science and Technology found that, for a vehicle with
a 100,000 kilometer lifetime (when batteries would need replacement), EV environmental impacts were
“indistinguishable from those of a diesel vehicle.” The reason is that manufacture of an EV emits
about double the carbon dioxide required to manufacture a diesel or gasoline car, primarily to build
the metal batteries of the electric.
The study also found that “EVs exhibit the potential for significant increases in human toxicity,
freshwater eco-toxicity, freshwater eutrophication, and metal depletion impacts, largely emanating
from the vehicle supply chain.” In other words, production of electric car batteries may become a
major source of pollution. Suppose we go slowly on promoting electric cars, Mr. President?
-- Steve Goreham, Obama promotes electric cars, but they still fall short, _Washington Times_ March
19, 2013
http://communities.washingtontimes.com/neighborhood/climatism-watching-climate-science/2013/mar/19/obama-promotes-electric-cars-they-still-fall-short/
--
Dave
"Tam multi libri, tam breve tempus!"
(Et brevis pecunia.) [Et breve spatium.]