[opendtv] Re: EPA tightens up power specs for PCs

  • From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Fri, 27 Oct 2006 18:33:13 -0400

Tom Barry wrote:

> One of my main attractions to an all electric vehicle is my
> software guy's aversion to anything with too many precision
> mechanical moving parts. The modern gas engine just has too
> many things to service or wear out. It sort of seems like
> old-tech to me.

I completely agree with that. Getting rid of the internal combustion
engine and replacing it with a one-moving-part electric motor, or one
motor per wheel, is very appealing to me as well. I'm simply saying that
we have to find ways of doing this without having to rely on batteries.
Batteries are always the weak link, even now.

> Of course with the electric cars the darn batteries currently
> seem to wear out even faster. But hopefully that will change.

That's why I like the idea of fuel cells. They potentially make
electricity directly out of a much better energy source than batteries.
The typical application needs H2 as a fuel, but that's not really
optimum in the near future.

I thought it was Toyota, several years ago, that announced a scheme
where they converted gasoline or other fossil fuel into H2, on board. I
guess that turned out to be too hard or expensive to do. But it does
seem like the right approach. Use truly efficient sources of energy, and
go directly to electricity. Then the electric vehicle becomes as useful
and general purpose as cars are now, rather than the compromised golf
carts battery-powered vehicles always seem to be.

Check this out:

http://www.eere.energy.gov/cleancities/atv/tech/fuel_cell.html

Quoting:

"Fuel cell vehicles are expected to achieve overall energy conversion
throughput efficiencies around twice that of today's typical gasoline
internal combustion engines. The fuel cell system is being targeted by
DOE to achieve 60% efficiency by 2010. Fuel cell vehicles can run on any
hydrogen-rich liquid or gas, as long as it is suitably processed.
Gasoline is one possibility, but in addition to pure hydrogen,
alternative fuels such as ethanol, methanol, natural gas, and propane
can also be used.

"Hydrogen is the most abundant element in the universe and can be found
on Earth in virtually unlimited quantities. Using hydrogen or other
domestically produced alternative fuels to power fuel cell vehicles will
help reduce our nation's dependence on imported oil."

Note that 60 percent efficiency is twice that of an internal combustion
engine, which puts it on a par with the Tesla hopeful thinking. Without
having to replace all of the electric power generators in the country to
achieve this goal.

Bert
 
 
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