[Diy_efi] Re: Veggie van

Eric Byrd klox at juno.com
Thu Dec 12 09:56:35 GMT 2002


Mike, you are an extraordinarily well-read guy...

On Thu, 12 Dec 2002 16:02:17 Mike <erazmus at iinet.net.au> writes:
> Yeah Bevan, - thats what I like about solar too :-)
> 
> There's another potential energy source using supercritical water:-
> 
> ie. Place water in a pressure vessel to around 3250psi, heat to
> 400deg C (its still liquid water) and now its in an equilibrium
> between being an ionic solvent and a non-ionic solvent at the
> same time or in a superposition state of the two - with some
> quite nice properties :)
> 
> Add organic waste - such as from pharmacuticals, kitchen waste,
> garden waste or whatever - such as through a crusher so its a
> paste and manageable through the system,
> 
> Add air and combustion takes place, which raises the pressure
> and the temperature - all whils the water is in liquid form,
> not sure if light is also emitted but wouldnt it be spooky
> to watch the combustion glow in liquid water through a quartz
> window !
> 
> The heat generated is used to drive a turbine, and maintain the
> systems base point operation provided you have enough organic
> waste - which shouldnt be a problem for an 'idle' mode, batteries
> of course can be used to kickstart it as for a car ( but i am
> guessing this combustion process would be too slow to have one
> of these things in our boot)
> 
> The combustion is for the most part complete and the only
> waste products (by far) are N2 and CO2 which could be drawn off
> through your classic membrane separator to supply industry.
> 
> The other potential is to use it in a partial combustion format
> with safe fuels (non pharmacuticals) to generate CO, that and
> H2 passed over a copper catalyst will generate methanol, the
> heat source and pressure is already there so to speak, so
> we could in theory use this system to get rid of kitchen and
> garden waste, generate heat for home heating and cooking and
> the outcome is methanol to run our cars...
> 
> Hope the petrochemical groups allow this email to get through ;-)
> 
> Rgds
> 
> mike
> 
> 
> 
> At 08:38 PM 12/12/2002 +1300, you wrote:
> >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 !
> >> >
> >> >
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> >> >
> >> >
> >>
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> >>
> >
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