[Stoves] Model II iCan -- update

[Ron Larson]

Jock etal (adding stoves list)

   If asked in advance, I would probably have guessed wrong.  Obviously you decreased the pressure difference across the fuel supply - but why is not clear to me.

   How much secondary air is entering at the hose clamp?

   Anyone reading this have a thermodynamic/flame model that would cover this very interesting question?

Ron



On Jun 7, 2011, at 7:47 AM, Jock Gill <jg45 at me.com> wrote:

> Doug,
> 
> [Update] When the 12 secondary air holes were enlarged to 5/16ths, but he primary air holes were unchanged,  the results from the modified two can system were good.  A load of 50 grams of fuel showed an increase of about 10% in the amount of time flammable gas was produced; the  post flame smoke was gone in less than 90 seconds; and the biochar passed all of the usual tests very well.  
> 
> Question for students:  Can you think of why the gas production time increased when the secondary air holes were enlarged from 1/4 inch to 5/16ths inch?
> 
> The above results increase my confidence level in my new secondary air design.
> 
> It is SOOO easy, I hope you will give t a try.
> 
> 
> <Model II modified.jpeg>
> 
> 
> 
> Regards,
> 
> Jock
> 
> Jock Gill
> P.O. Box 3
> Peacham,  VT  05862
> Carbon Negative Solutions
> (G) (802) 503-1258
>