Hi Marc and All,
>
> ----- Original Message -----
> From: "F. Marc de Piolenc" <[EMAIL PROTECTED]>
> >
> > 1. You'd be darned lucky to actually store 80% of
> the generated juice in
> > a battery - or rather, you might store 80%, but
> you won't get that much
> > back and still have reasonable battery life.
Yes you will. Even if you only get 80% out at high
discharge rates if you wait a while the power comes
back as the chems get to the batt plates surface.
Battery life of lead batts only gets hurt if you
discharge more than 80%.
With ni-cads is much better than this and they last
20+ years.
> That's in addition to the
> > weight and cost penalties of batteries, which
> still have very low energy
> > storage densities.
Have you checked out the weight of fuel cells and
NiMH H2 storage? They are not very good, little
differance..
> >
> > 2. Electrolysis units can be run up to .90+
> efficiency if the current
> > density is kept low - it's a tradeoff between
> capital cost of the
I've never heard of eff this high. 60% is the
best I've seen.
> > electrolysis plant and efficiency, as a more
> efficient plant is more
> > expensive to build. Of course there's a penalty
> for compression or
> > whatever you do with the hydrogen (best is a fuel
> bladder at or near
> > atmospheric pressure, but that appeals only to
> airship maniacs like
> > myself), but even that doesn't drop you to 30%
> net. based on heat. If
> > your goal is electricity, you can run hydrogen
> through a fuel battery
> > and recover as much as 85% of input energy in a
> practical road machine.
I'd like to see this info. Looks much to high.
50% maybe for fuel cell/ H2 production.
> In terms of capital cost, electrolytic hydrogen
> makes very good sense as
> > an energy storage medium for power plants with
> intermittent output
> > (solar and wind) if stored in gasometers or
> bladders, especially if
> > there's a market or a profitable use for the
> oxygen (an oxygen-enriched
> > gasifier, for example). With compression ...?
How much does your Fuel cell cost?
jerry dycus
> >
> > Best,
> > Marc de Piolenc
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