[Stoves] Boiled 520 grams of 14C water in 3:20 minutes

[Jonathan P Gill]

Steve,

Good question.  Will try to find an answer for you.

FYI: I found an expensive digital cooking thermometer my wife uses and measured the water that had been sitting out over night.  It was actually 12.8 degrees C, not 14.  Our well water is currently running at about 12 degrees C!

Note: The Rim Fire iCan pyrolyzer unit is a 3 lbs Costco coffee can.  Pretty good steel.  Much better than that in a paint can. Better if it were made of stainless.  But this is the only part that needs high temperature stainless.

Dimensions:

H:				19 CM
Max. Diameter:	 ~ 15.5 CM
Exit aperture:		13 CM

Burner plate diameter:	11.5 CM.  I want to try one about 12 CM. It  has to be fairly easy to place into the can and also to remove at the end of the run.

The steel burner plate is set about 4 mm below the lip of the can's exit aperture.  Ie, 4 mm below the point at which the secondary air enters the system.

A "full" fuel load, one that leaves a bit of distance from the top of the fuel to the bottom of the burner plate, is 1,500 grams of wood pellets.

More as it is - after I make a pyrolyzer with even smaller primary air holes, 5/64s of an inch rather than the current 3/32s.

These dimensions are simply starting points.  Nothing is written in granite by lightening.

Jock


On May 5, 2013, at 11:39 AM, Steve Taylor <steve at thetaylorfamily.org.uk> wrote:

> 
> 
> 
> On 5 May 2013 16:05, Jonathan P Gill <jg45 at me.com> wrote:
> Fellow stovers,
> 
> This morning, I loaded my Rim Fire iCan TLUD with 1500 grams of Vermont wood pellets.  Powered with a muffin fan, it runs like a champion.
> 
> 1,000 grams of 14C water in an open top can set on top of the grate boiled in 10 minutes . Old school.
> 
> 520 grams of 14C water in a Swiss Volcano style unit set on top of the grate, boiled in 3:20 minutes. The boil was so vigorous that the water spilled over the top and put out the gas fire.  New school.
> 
> So if you'd boiled 520 grammes old school, you'd do it in 600 x 520/1000  or 5:12 mins. 
> The new system did it in  3:20,  a 30 odd percent improvement in output,
> 
> What would happen if you put a lid on the oldschool method, to your timings. 
> _______________________________________________
> Stoves mailing list
> 
> to Send a Message to the list, use the email address
> stoves at lists.bioenergylists.org
> 
> to UNSUBSCRIBE or Change your List Settings use the web page
> http://lists.bioenergylists.org/mailman/listinfo/stoves_lists.bioenergylists.org
> 
> for more Biomass Cooking Stoves,  News and Information see our web site:
> http://stoves.bioenergylists.org/
> 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.bioenergylists.org/pipermail/stoves_lists.bioenergylists.org/attachments/20130505/b2f55fa2/attachment.html>