[Stoves] Malot-blower

[frank]

AJH and stovers,

My thinking is if the primary air in the TLUD were to go up through the 
fuel to the primary burn, then briefly reverse direction then return to 
up flow the pyrolysis and little combustion would be more even and the 
stove would be able to handle a wider range of small fuels. That due to 
the heat reversing back into the next fuel to heat and help dry it out. 
So I have been trying to think of a way to  pulse air, or better, 
actually reverse it for a short time.  So I was attracted to Martins 
idea of using a bow and string to rotate the fins in forward and reverse 
direction. I realize the need to redesign the fins.

Problems as I see it are:
Power and means to move the bow back N force
Getting enough air movement
The fact that the air going into the fuel in reverse is depleted of oxygen
All the air pressure built up in the fuel bed during the forward push 
will need time to be depleted before the air flow reverses

But!
If Jeff's cement mixer procedure formed fuels (cake like) in a cardboard 
tube fit to the shape of a stove and stuck hole through it for the air 
to freely flow up through channels to the primary burn I think the air 
flow change would respond quickly.

In my ~ 15 glass experiments with only four cm diameter of surface the 
pyrolysis burn is always uneven before the half way point.
At Stove Camp I hope to come away with another idea for a fuel container 
to preform stove fuel experiments.

Thanks
Frank
.








AJH wrote:

>On Fri, 06 Jul 2007 13:46:32 -0700, frank wrote:
>
>  
>
>>But more air is pushed forward 
>>and less pulled back for every complete cycle.
>>    
>>
>
>Frank as Martin's "malot" device is a centrifugal fan it will deliver
>air in one direction only which ever way it is rotated, the blast will
>be in pulses as the direction of rotation changes when the bow gets to
>the end of its travel.
>
>AJH
>
>
>
>
>  
>

-- 
Frank Shields
Soil Control Lab
42 Hangar way
Watsonville, CA  95076
(831) 724-5422 tel
(831) 724-3188 fax
frank at compostlab.com
www.compostlab.com