[Stoves] Fuelwood moisture and wood stove

[Otto Formo]

Dear Crispin,
Thanks for highlighting me on that issue.Is such a stove to complicatied or expencive for the low income households of Africa?
If you put a natural draft gasifier in an enclosure to get the primary air prehated using dry fuel, I would guess that you could use fuel of higher moisture content, later on. 
I understand that very dry fuel might burn so fast, that PM might enter the indoor air.I also think a fan driven gasifier might speed up that process and make it even worse?
Otto 

> From: crispinpigott at gmail.com
> To: stoves at lists.bioenergylists.org
> Date: Fri, 10 Feb 2012 09:38:06 -0500
> Subject: Re: [Stoves] Fuelwood moisture and wood stove
> 
> Dear Otto
> 
> >I have "never" heard about stoves. which can burn wet wood cleanly, apart
> from boilers, may be.
> 
> There are good reasons why boilers can burn wet wood - if they are designed
> to do so.
> 
> I demonstrated to Dr AD Karve a stove that was burning very damp wood at
> ETHOS, perhaps 2007 - was burning very cleanly. Basically it requires
> preheating the primary air. As very few stoves preheat the primary air, they
> do not deal with damp fuel well.
> 
> Very dry fuel can also make a lot of condensed particulates, principally by
> burning so fast that it runs out of secondary air. That is one way to
> manufacture carbon nanotubes.
> 
> Regards
> Crispin
> 
> 
> 
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