[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.
>
>
>
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