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

[Paul Anderson]

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