[Diy_efi] Re: Veggie van

[Mike]

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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