[Stoves] Fwd: TLUD under plancha Up-date from Gustavo in El Salvador

Wed May 28 10:52:27 CDT 2014

I posted a copy of Gustavo's video to  http://stoves.bioenergylists.org/ 

- Erin 

From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of
Paul Anderson
Sent: Tuesday, May 27, 2014 7:29 PM
To: Discussion of biomass cooking stoves
Subject: [Stoves] Fwd: TLUD under plancha Up-date from Gustavo in El
Salvador

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

-------- Original Message -------- 

Subject: 

TLUD under plancha Up-date from Gustavo in El Salvador

Date: 

Tue, 27 May 2014 12:04:20 -0500

From: 

Paul Anderson  <mailto:psanders at ilstu.edu> <psanders at ilstu.edu>

To: 

Inversiones Falcon  <mailto:invfalcones53 at yahoo.com>
<invfalcones53 at yahoo.com>, Harry Ha  <mailto:harryha at sympatico.ca>
<harryha at sympatico.ca>, Thong - Haiti EmailUser Ameripham
<mailto:ameripham at click1.net> <ameripham at click1.net>, Peter Schild - El
Salvador  <mailto:peter.schild.mittelamerika at gmail.com>
<peter.schild.mittelamerika at gmail.com>, Bob Fairchild
<mailto:solarbobky at yahoo.com> <solarbobky at yahoo.com>,
<mailto:art.donnelly at seachar.org> "art.donnelly at seachar.org"
<mailto:art.donnelly at seachar.org> <art.donnelly at seachar.org>, Jon Anderson
<mailto:jonnygms at gmail.com> <jonnygms at gmail.com>, CHRISTA ROTH
<mailto:christa-roth at foodandfuel.info> <christa-roth at foodandfuel.info>,
Biochar Yahoo Group  <mailto:biochar at yahoogroups.com>
<biochar at yahoogroups.com>, Crispin Pemberton-Pigott
<mailto:crispinpigott at gmail.com> <crispinpigott at gmail.com>, "Ronal W.
Larson"  <mailto:rongretlarson at comcast.net> <rongretlarson at comcast.net>, Tom
Miles  <mailto:tmiles at trmiles.com> <tmiles at trmiles.com>, Discussion of
Biomass Cooking Stoves  <mailto:stoves at lists.bioenergylists.org>
<stoves at lists.bioenergylists.org>, Hugh McLaughlin
<mailto:wastemin1 at verizon.net> <wastemin1 at verizon.net>

Dear all, especially Frank and Crispin and Tom / Erin,

Gustavo has presented a very nice video of the use of a tall TLUD gasifier
under a DUAL purpose stove frame (frame = stove structure without the heat
source) that first boiled 5 liters of water in 12 minutes, and then
converted into a plancha stove with chimney, cooking papusas (related to
tortillas).   Total cooking time 1 hour 45 minutes on one batch of wood
chips/chunks (5237 grams) that yielded 1300 g of char.  25% weight yield of
char.   Probably could have operated an additional 10 minutes with pyrolysis
fire and a slightly lower percentage yield of char.

You who are on the Biochar and on the Stoves Listservs have not seen this 10
minute mp4 video because it is 9.4 MB.   I am sure that Tom and Erin will
make it available via the Websites and send the link.   And I will try to
have it soon of     www.drtlud.com

Note:   That is approximately 4000 g of fuel of pyrolytic gases (including
moisture content that was probably near 15%).   Any ash content (probably 1%
of the raw fuel) remained in the char.

With the above information, the folks who are strong with number (Crispin,
Frank, Tom and others) can calculate many important values such as 

A.  energy released       [[ I think it is about 10 to 12 MJ per kg of
gases, so that is about 40 to 48 MJ released, with about 16 to 30 MJ of
energy remaining in the char.   This relates to a side discussion about the
value / amount of the energy in the gases vs. in the char when TLUD stoves
operate to completion of a batch of fuel (so there is no need to separate
out any un-pyrolyzed fuel).   MANY variables, so the numbers are still quite
approximate. ]]

B.  average fire power over the time of the batch:   Using 44 MJ released in
1.75 hours, that is 25 MJ per hour, which is a 7 kW fire.   That matches
well with the 12 minutes to boil 5 liters.

Sorry if you have not seen the video yet, but it will be available via
websites as soon as possible.

Gustavo, WELL DONE for this initial experience.   This all bodes well for
the future of TLUD thermal power into so many types of plancha stoves.   

Paul

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

On 5/27/2014 9:05 AM, Inversiones Falcon wrote:

Dear Paul I have been working on our project, but only now I found the way
to send you a good video.  We can adjust any TLUD to all our frames (even
designing new model for street vendors).   I would like to tried to make an
oven but at this moment I`m short of budget for something like this.  Please
send comments on this video.

Best Regards

Gus

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