Saturday, October 31, 2009

[Electric Boats] Re: New "battery" Tech

 

With respect to promising new battery chemistry, this Zinc-Air  might be cheaper and and safer than Lithium types. Compressed air takes a lot of energy to create, not very efficient because it wastes heat like crazy, at least it does in my shop air compressor!!!

http://www.treehugger.com/files/2009/10/zinc-air-battery-revolt-3-times-more-energy-lithium-ion-battery-electric-cars.php

Sailonner
--- In electricboats@yahoogroups.com, "Eric" <ewdysar@...> wrote:
>
> I agree with Victor. This technology seems more suited for propulsion directly rather than use the compressed air to spin an alternator/generator, and then use the resulting electricity to spin a drive shaft.
>
> The description given said that 10 cylinders (I visualized scuba tanks) at 300bar represent 20Kw for 10 minutes, which translates to 3.3Kwh. Without many actual specifications, this system sounds bulky, complex and perhaps as heavy as regular AGM batteries. To be fair, the engineers were working towards solving different problems than we have with lead/acid energy storage, like the ability to stay "charged" for a decade in adverse conditions.
>
> Fair winds,
> Eric
> SoCal
>
> --- In electricboats@yahoogroups.com, "vicwin2009@" sailor@ wrote:
> >
> >
> >
> > --- In electricboats@yahoogroups.com, "marilynhays" <SayHey@> wrote:
> > >
> > > I'm alos a pilot, and and EAA member. I saw this link in the EAA newsletter and thought y'all might find it interesting too.
> > > http://pepei.pennnet.com/Articles/Article_Display.cfm?Section=ARTCL&PUBLICATION_ID=6&ARTICLE_ID=369242&C=Feat&dcmp=rss
> > >
> > > I hope that link works...
> > >
> > Hi Marilyn.
> >
> > Here in Norway it has been a lot of talk about compressed air as "battery". A small car made in India are using the system. It konsists of two 100liter carbo fiber tanks, with 300bar pressurised air. They had invented a new type of air motor. The plan was to produse a small car in France for the European market. The system should be suitable for boats too, if compressed air are available, or if you can produse it in an easy way.
> >
> > Victor
> >
>

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