[Stoves] Grates and chimneys

[Otto Formo]

Dear Roger and Bridget,
Nice piece of work!
Even a tray for the ash, most producers of stoves to day seems to "forget" that biomass produce ash. (Gasifiers produce little ash)
I just recall, that you where looking for a stove in combination of heating and cooking to fit in a boat or a small cabin.
Have you tried to ignite the biomass from the top?
By doing so, you will burn out the gases in the biomass, first, and will have a very clean and efficient burn, despite a chimney or not.
Most people seems to forget, that dry fuel (less than 10% moisture) and ignition on top of the fuel, is just as important as an "efficient" stove.
Have you tried or considered pellets?

What is your retail price?
I very much agree that such a stove will be very suitable for outdoor activities, as well, like in tipies and small cabins in the high mountains.

Have a nice and warm day in Washington.

Good luck.

Otto
A TLUD ND gasifier fan.............without a fan.......:)

> From: Fireside Hearth [firesidehearthvashon at hotmail.com]
> Sent: 2012-02-08 08:37:30 MET
> To: stoves at lists.bioenergylists.org
> Subject: Re: [Stoves] Grates and chimneys
> 
> 
> Dear Xavier, 
> 
>        I should be offended, but alas, I will send you a video link instead........yes our stove has a chimney!
> 
> http://www.youtube.com/watch?feature=player_detailpage&v=vkz6gKLayvc
> 
>    Roger and Bridget Lehet.
> 
> > From: xvr.brandao at gmail.com
> > To: stoves at lists.bioenergylists.org
> > Date: Tue, 7 Feb 2012 23:59:35 +0100
> > Subject: [Stoves] Grates and chimneys
> > 
> > " It is unfortunate that people produce stoves that have chimneys, but are
> > not actually clean-burning."
> > Do we actually have chimney stoves that do not clog up after few
> > months/years? Even the cleanest stoves? Is it a good idea to build chimney
> > stoves at all?
> > 
> > "Your grate price is good! I think we should be  jealous! It would be so
> > nice to be able to get good parts in cast iron."
> > Hell yes, I can make 1 dollar iron grates, but I wish we could make 1 dollar
> > cast iron grates in Benin. In fact, cast iron is very rare in Benin (West
> > Africa? Africa?). When Africa will have the industrial production capacities
> > of Asia, things will change!
> > 
> > 
> > 
> > -----Original Message-----
> > 
> > Message: 4
> > Date: Tue, 7 Feb 2012 00:14:57 -0500
> > From: "Crispin Pemberton-Pigott" <crispinpigott at gmail.com>
> > To: "'Discussion of biomass cooking stoves'"
> > 	<stoves at lists.bioenergylists.org>
> > Subject: Re: [Stoves] advice for chimney wood stove for rural Burkina
> > 	Faso
> > Message-ID: <015301cce557$70642af0$512c80d0$@gmail.com>
> > Content-Type: text/plain; charset="us-ascii"
> > 
> > Dear AD
> > 
> >  
> > 
> > Your story is not very unusual. It is unfortunate that people produce stoves
> > that have chimneys, but are not actually clean-burning. My point is that
> > just because one produces a chimney stove is no excuse not to use that
> > additional expense to create the draft needed to completely burn the fuel.
> > Astonishing really. 
> > 
> >  
> > 
> > I wonder if there is too much emphasis on 'clean indoor air' without enough
> > emphasis on 'not needing to worry about clean indoor air' in the first
> > place. 
> > 
> >  
> > 
> > That level of deposition is depressing. I heard about a stove being produced
> > in the tea country high in Kenya which is used for space heating and
> > cooking, According to the designer the 3 inch chimney would clog after three
> > months. That is ridiculous! What kind of crummy combustion is that?
> > 
> >  
> > 
> > A chimney is as good as a fan - especially 3.5 metres. Fan stoves are
> > supposed to be really clean or you have not done a good job. Shoving bad
> > combustion outside does not solve much. The situation in Ulaanbaatar is
> > exactly like that. No one has a stove without a chimney. The air outside is
> > so polluted that it is contaminating the air drawn into the homes. So the
> > chimney solved nothing - the problem is the stove.
> > 
> >  
> > 
> > Your grate price is good! I think we should be  jealous! It would be so nice
> > to be able to get good parts in cast iron.
> > 
> >  
> > 
> > Thanks
> > 
> > Crispin
> > 
> >  
> > 
> > 
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> > 
>