Re: China's Growing Demand for Oil and Its Impact on U.S. Petroleum Markets


PaPaPeng wrote:
On 12 Apr 2006 09:45:25 -0700, "rst0wxyz@xxxxxxxxx"
<rst0wxyz@xxxxxxxxx> wrote:

It is my fantasy that may be China can revive the light-than-air
air-ship traveling.It seems to be doable and commercially viable..

They tried it once, and found it too dangerous and hard to handle in
high wind. There is no chance the dirigible coming back. I'm trying
to spark a discussion on electric engine or battery that can get 500 -
600 miles before recharging, and nobody want to take the bate...
A key problem is the re-charge time and cycling of the batteries. After
a few years or less depending on driving habits the battery/batteries
will be pretty spent and not last long on one charge. Then there is the
expense of replacing them. With batteries its not like you can fill er'
up in ten minutes like you can at a gas station. You'd have to do it
overnight (at least eight hours). Also all those battereries are going
to take a lot of space in an car so you'd end up with a trunk full of
them and I don't want to be the guy who rear-ends or gets rear-ended
with all those hundreds of volts back there in a metal frame vehicle. I
don't trust the theory that the power will flow around me through the
metal when it is my life on the line...

There is also the inherent problem with battery cars that you are
assuming that the power created through power stations is any more
efficent and cleaner to the envirnment than the car just burning fuel
instead. If power is generated through wind, solar, dams, hydrothermal,
geothermal, nuclear then perhaps you are better off but most U.S.
energy comes from coal fired power plants. Even with clean coal burning
tech. you have the damaging effect to the envirnment b/c of acid mine
drainage, strip mining...And this is all based on global warming is
occuring and that its human caused and that in the aggreate it is bad.
I would dispute two of those.

I'm not good enough to do the math. But what you are proposing feels
like a perpetual motion machine or a humongous battery on wheels. As
current automotive performaces go a tank of gas is sized to have a
range of 150 miles or approx 3 hours of highway driving. Now you know
why gas stations appear surprisingly just when you need a refill.
Any car that gets only 150 miles out of a tank of gas is a piece of
junk or has a really small REALLY small tank. Most cars have tanks of
11 to 17 gallons. 11X20mpg=220 17 x20=340 and 20 mpg is pretty low for
most cars that are taken care of.

.

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