[Stoves] Philips Stove. Was Re: Jatropha press cake as a fuel

[Paul S. Anderson]

Paul v.d.S.,

Thanks for the clarification.

Did I hear correctly that you will be attending the ETHOS meeting in Seattle
this month?  I hope so!!   And I hope that you are bringing one or several of
your Philips stoves complete with TEG and the battery unit for start-up.  You
could light it at the "lighting of the stoves" event.  And one should go to
Aprovecho for testing with usage as you have described.  And, depending on
price, myself and some others could be interested in purchasing units.

Paul A.
-- 
Paul S. Anderson, Ph.D., Geography professor - Emeritus
Telephone:  USA-309-452-7072 (residence and office)
Internet site:  www.ilstu.edu/~psanders
For my gasifier stoves info, go to:
http://bioenergylists.org/contributors#Paul_Anderson


Quoting Paul van der Sluis <paul.van.der.sluis at philips.com>:

> Dear Paul A., Tom M.
>
> I haver made quite a lot of models and several sizes of stoves. The
> current size is based on optimizing combustion cleaniness and user
> feedback.
> Many types of wood have been used, both here in Europe and in India. The
> biggest difference I have seen is that Indian wood used is of low quality,
> probably with
> lot's of bark and gives more ashes than what I am used to.
>
> Doing the same combustion experiments in Tom Reeds stove is more difficult
> because the thermal mass of that stove is much smaller (at least the one I
> have seen).
> The addition of the wood should not lower the combustion chamber
> temperature to below about 400 Celcius because in that case the secondary
> flame will be
> extinguished and emissions rise dramatically (at least until the flame
> re-ignites)
>
>
> The main effect from the air from the lower holes is to prevent charcoal
> built up. The charcoal will 'vaporize' according to"
>
> C + 1/2 O2  --> CO
>
> And this CO will burn at the secondary air holes. This can clearly be seen
> as a typical blue-pink flame as soon as the wood pyrolisis itself has
> stopped and the more or less
> yellow flame has disappeared. Note here, that a yellow flame can surely
> burn cleanly (just like a wax candle burning)
>
> Of course part of the air will hit wood. That is also why increasing the
> size of the primary airflow holes increases the thermal power of the stove
> and the emissions.
>
> Using the stove in the traditonal top-lit manner is not recomended because
> in that case the heat cannot reach the thermoelectric generator.
> For start-up there is one small rechargeable battery. After about 5
> minutes the thermoelectric generator takes over to power the fan and
> recharges the battery for the next run.
>
>
> Regards,
>
> Paul.
>
>
>
> Dr. P. van der Sluis
> Philips Research Laboratories Eindhoven
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