[Stoves] JED's breakthrough Re: Fuels of the future

Richard Stanley rstanley at legacyfound.org
Thu Sep 10 21:12:24 CDT 2015


Josh, 

Great presentation: Its always inspiring to see someone who persists and documents as well. 


I just go back from dinner out at a wood fired pizzeria and had a thought about  the shape of your combusion chamber. Its simply that if the ceiling of it were dome-shaped, it would tend to concentrate at least the  infrared heat, back down into the center of the combustion chamber. 
As a dome shape, it would also be structurally  stronger and more durable  because it  inherently directs the upper body load - stove and pot-downward and inward -in compression- with more even heating and more direct expansion of the surface of the dome as ceiling.

I sketched up a simple generalised form sample ,as a screen shot  and .skp file, if you want to build on it, below, 

Keep up the good work. If you make a manual ald sell it online, I  will be happy to refer others to you. We have our own hands full with finalisation of our MINI thresher chopper ( “molino ya mano”)  manual which you and I  spoke of earlier. We’re also getting ready for return to Nicaragua and very likely a TOT project emerging from the training we did last march. 

Richard 
Briquette serf

CC dome concept for your stove
   cross section 



On Sep 9, 2015, at 5:30 PM, Joshua Guinto <jed.building.bridges at gmail.com> wrote:

Thanks a lot Dr. Paul These words are encouraging and coming from you multiplies the encouragement. 

Im writing a narrative of the anatomy of the stove. It now has come to several pages and 6.5 MB. Now trying to downscale the size to 1.5 MB and less. . There i explained all the processes that i installed - air, fuel, heat... There are many things unknown as i only have limited tools and equipments to measure the parameters. 

Will get back to you with the narrative. 

Regards

Jed. 

Joshua B. Guinto
Specialist, Appropriate Technology
MSc Management of AgroEcological Knowledge and Social Change (MAKS)
Wageningen University, The Netherlands 2006 to 2008
Recipient, International Fellowships Programme  Award (IFP) 2005
Ford Foundation 


2015-09-07 17:59 GMT-07:00 Paul Anderson <psanders at ilstu.edu>:
JED,

Truly awesome!!!!!!!!!    [Based on very little information, but he tells us truly important info about fuel and boiling time and     combustion technology.   This truly looks promising.]

I suspect that you are on the verge of a major shift in cooking stoves.   Your attachment with photos in your original message should be seen by all.    It will be soon placed on the    www.drtlud.com   website.   

What I am reading and interpreting is this:

1.  Abundant supply of a fuel that is appropriate in size, energy content, moisture, etc.   Literally an agricultural "refuse" for     free or for the cost of transport.   Producers will start selling it, but it is already UNDER the price of other fuels, so the price will only rise to the level that the market will bear.   

2.  A CERAMIC / MUD / CLAY stove, made by a master of clay stoves.   We would like to know the cost of the stove.   And how easily can it be made ?    Importance of clay is in next item.    And it should be able to handle numerous other appropriate biomass fuels, but doing just one (pili nut shells) is sufficient for starting and establishing what can be accomplished.

3.  You operate in TLUD mode (correctly characterized by the downward migratory pyrolytic fron MPF).   And then you continue to burn the created char while adding (please explain where and how) additional fuel.   The result is the high heat in the char-bed, but without the metal parts that are damaged by high heat.   Ceramics to the rescue!!!!   Continuous burning.  

4.  Plus you are demonstrating the making of light.   Very nice.   

Best wishes.   Please tell us more.    And about the important issues of user acceptance.   Many of us are willing to be of assistance.   In some ways you are only scratching the surface of what you are demonstrating.    Congratulations.   

And are you going to the GACC Forum in Ghana in November 10 - 13?   

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 9/7/2015 4:59 PM, Joshua Guinto wrote:
> Dear Crispin, Paul and everyone
> 
> Let me jump into the conversation. 
> 
> I am now in the midst of the gasifier stove i am fabricating and the abundant supply of pili shells. Pili (canarium ovatum) is an endemic species of my place here at the Bicol Region which is south of Manila. The shells  are very much heavier than macadamia nuts and has a density of 0.87 grams/cm3. . 
> 
> Two days ago we began hauling 4 tons of the shells to become my stocks of fuel. I will sell the shells along with my PapaBrick Stove. And then, while we are hauling the shells, we were offered another 6 tons of shells from the neighbor farm, both in the same village. I used to purchase the shells from another village where to my best estimate, there is more than 10 tons per month that are very much underused. This supply is expected to increase as more farms have planted thousands of pili trees as the farmers got more awareness with the use of the shell for gasifier stoves. 
> 
> On the other hand, the PapaBrick Stove is giving us satisfying performance, now that we know better how to use it can perform as a TLUD gasifier stove during the cold start phase and then work as a rocket during the hot start phase in a continuous mode. 
> 
> One load receives 1.25 kg of the shells and runs for 75 minutes of very clean flame, boils 4 liter of water in 14 minutes during the cold start phase and then 9 minutes during the hot start phase. 
> 
> After the flame has gone out, we can harvest an average of 2.73 grams of char from the raw fuel of 1.25 kg or about 21 % recovery.
> 
> Going further i fabricated a lantern on top of the stove. And it was very satisfying. 
> 
> 
> Regards
> 
> JEd 
> 
> Joshua B. Guinto
> Specialist, Appropriate Technology
> MSc Management of AgroEcological Knowledge and Social Change (MAKS)
> Wageningen University, The Netherlands 2006 to 2008
> Recipient, International Fellowships Programme  Award (IFP) 2005
> Ford Foundation 
> 
> 
> 2015-09-03 20:31 GMT-07:00 Paul Anderson <psanders at ilstu.edu>:
> Crispin and all,
> 
> Do you know of any location that has these shells and has access to TLUD gasifiers?   The combination of these shells and TLUDs has great potential, but only if someone somewhere puts the two together in a serious project or venture.  I would be interested in having contact with people in such situations.
> 
> 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 9/2/2015 6:01 PM, Crispin Pemberton-Pigott wrote:
>> Dear Friends
>> 
>> Her are two fuels that are abundant (in places) and really interesting to work with. Both can be charcoaled and both are really strong.
>> 
>> Oil Palm Kernel Shells
>> 
>> And
>> 
>> 
>> 
>> Candle nut shells.
>> 
>> 
>> The price is something like $70 per ton. Moisture is low and energy ins in the 18-19 MJ/kg range.  The can be burned in a TLUD to make charcoal, and the charcoal is strong enough to sell in sacks.
>> 
>> 
>> The interesting about these fuels is they are not just available in many thousands of tons, they pack quite well so a packed bed gasifier is a pretty good burner.
>> 
>> 
>> For crossdraft and downdraft enthusiasts, they can also be used in hoppers burning something and intermediate coal.
>> 
>> 
>> Regards
>> 
>> Crispin
>> 
>> 
>> 
>> 
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