[Stoves] Air power Re: Burning saw dust in TLUD stove

[Paul S. Anderson]

Chrispin and all,

Chimneys have their purposes, but (as you helped me to learn) there  
are some disadvantages:

1.  One pull needs to serve both the primary and secondary air, and to  
separate the pull into two paths is difficult and interrelated  
(increase one will diminish the other).

2.  We need feet of chimney height to equal what a small fan can  
accomplish, and a blower gives even more power.

3.  In the context of sawdust or even rice husks, nobody has  
successfully pulled (via a chimney) the primary air through such fine  
materials, especially with small cookstove sizes that could finish  
cooking before a substantial chimney gets sufficiently hot to give a  
stable draft.

4.  (Opinion) Fans and blowers will enter the cookstove efforts in  
major ways in the coming few years. They are so simple and so  
inexpensive and so beneficial that easily 200 million  
biomass-burning-households could benefit and acquire today from the  
addition of FA (FA = Forced Air or Fan Assisted to stoves. Maybe not  
the very poorest nor the refugees, but millions of others on the  
fringe and wanting better lives.

We Stovers are just scratching the surface of applications of FA into  
cookstoves.  The topic of FA is integrated into the content of the BEF  
Gasifier Stove Camps and can be part of the individual/small group  
efforts at those Camps.  Info about the BEF Camps is at      
www.tridecca.com/bef

Paul
-- 
Paul S. Anderson, PhD
Known to some as:  Dr. TLUD    Doc    Professor
Phone (USA): 309-452-7072   SKYPE: paultlud   Email: psanders at ilstu.edu



Quoting Crispin Pemberton-Pigott <crispinpigott at gmail.com>:

> Dear Rajan
>
>> This should not be a problem with Champion TLUD stove - since this stove
> has a
>> provision for attaching a blower for the primary air.
>
> Is it not possible to use a chimney instead of a blower?
>
> Thanks
> Crispin
>
>
>
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