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

Paul Anderson psanders at ilstu.edu
Sun May 5 14:44:14 CDT 2013


Jock,

I did not understand
> Not having any secondary air introduced into the pyrolysis chamber is 
> brilliant.  I wish I had thought of it
Please explain, or re-send how you explained it before.

Paul

Paul S. Anderson, PhD  aka "Dr TLUD"
Email:  psanders at ilstu.edu   Skype: paultlud  Phone: +1-309-452-7072
Website:  www.drtlud.com

On 5/5/2013 10:05 AM, Jonathan P Gill 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.
>
> Re-lit the gas with no problem as the water merely splashed on the 
> burner grate and never made it into the pyrolysis chamber.  Not having 
> any secondary air introduced into the pyrolysis chamber is brilliant. 
>  I wish I had thought of it.
>
> The syngas flames are still orange, but it sure works like gang 
> busters with no holes in the burner plate. I observe that after the 
> yellow wood gas flames vanish at the end of the run, a deep blue flame 
> is present on top of the burner grate.  This lasts for a few minutes 
> and then it too vanishes.  Even with the fan on full, the unit self 
> extinguishes with zero smoke.  With wood pellet feed stock, there is 
> only minor ash residue.  The quenching water does not turn milky.
>
> Notes:
>
> 1. After the second boiling test, I replace the open top can on the 
> burner.  It reboiled and kept boiling boiling until the feed stock as 
> exhausted at about the 45 minute mark. Approximately 95% of the water 
> was evaporated, as only 49 grams of water were left in the can.  The 
> water had been out all night and had stabilized to ambient 
> temperatures.  It had quite possibly not yet warmed up to the air temp 
> of 14C.
>
> 2. The pH of the quenching water was about 7, ie neutral.  Grass 
> quenching water tests at about pH 11.
>
> 3. The resulting charcoal has an extremely clean nose and easily 
> passes Hugh's "no soap test".
>
> 4. Wood pellets are a lot nicer to work with than grass pellets.  The 
> exhaust gasses of grass pellet pyrolysis tend to be messy. This 
> possibly indicates that the temperature in the system is not hot 
> enough to crack the oils and tars peculiar to grasses.
>
> 5. The Rim Fire iCan is based on the fan powered TLUD work of Prof. 
> Bolinio, described in 2005, and subsequent work by Paul Olivier.  Like 
> their designs, no secondary air is introduced into the pyrolysis 
> chamber. My basic departures from their designs are that 1] I use a 
> burner plate whose diameter is slightly LESS than the diameter of the 
> pyrolysis chamber; 2] I use no holes at all in the burner plate; 3] I 
> use fewer and smaller primary air holes in three concentric rings. 
>  The burner plate is essentially the opposite of a concentrator ring 
> often used in TLUDS that introduce secondary air into the pyrolysis 
> chamber.
>
> 6. Currently I am working with a fixed speed muffin fan.  Clearly, a 
> variable speed fan will offer many advantages.  I hope to have one 
> latter this week.  The design goal is a fan than can be powered by 
> either a 9 volt battery or a small solar cell.  A key goal is a free 
> standing unit that is not grid dependent. I am working on this with a 
> friend who is former General Dynamics engineer.
>
> If you want more details and photos, please send me a note.
>
> More as it is.
>
> Cheers from VT,
>
> Jock
>
>
> Jonathan P Gill
> Peacham, VT.
> jg45 at icloud.com <mailto:jg45 at icloud.com>
>
> ExtractCO2 from the atmosphere.
>
>
>
> _______________________________________________
> 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/20130505/1692a3fa/attachment.html>


More information about the Stoves mailing list