[Diy_efi] Re: Veggie van

[Bevan Weiss]

I think that the more important aspect of solar energy etc is that the
energy required to harvest any power from it is a once off charge.  Gasoline
(and other fuels) which require a cost in energy to get some back out of the
system.  ie you have to drill for the oil etc, then transport it etc to the
place of combustion, with solar/wind you just setup the panels/turbines
where you require the power and that's the largest energy cost of the
system, the rest is maintanance.


----- Original Message -----
From: "Mike" <erazmus at iinet.net.au>
To: <diy_efi at diy-efi.org>
Sent: Thursday, December 12, 2002 12:24 PM
Subject: Re: [Diy_efi] Re: Veggie van


> Sure - but comparatively speaking most of the energy (by far)
> is provided by their own product,
>
> Thats a rather significant paradigm, not reached by other
> energy sources and over a short time period...
>
> rgds
>
> mike
>
>
> At 08:13 AM 12/12/2002 +0800, you wrote:
> >
> >Yes, but unless the factory is right on top of the sand pit, someone
> >still has to excavate the sand and deliver it.  Even if this was done by
> >people with buckets they would need to eat to refuel, the food they
> >consume would somehow have used power to be grown and harvested (water
> >irrigation, etc).  And the unknown is always environmental impact, who
> >knows what impact a great big sandpit will have.
> >
> >You can keep going forever, hence the ease of making any form of energy
> >seem better than others.
> >
> >Dan  dzorde at erggroup.com
> >
> >>Well <hrrrm> sand is pretty cheap, easy to clean and easy to
> >>convert to silicon, all you need is a bit of power !
> >
> >
> >_______________________________________________
> >Diy_efi mailing list
> >Diy_efi at diy-efi.org
> >http://www.diy-efi.org/mailman/listinfo/diy_efi
> >
> >
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://www.diy-efi.org/mailman/listinfo/diy_efi
>

_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi