[Stoves] Fuels of the future /GRATE /TEG Themperature Electric Generator

[Frans Peeters]

Dears,

 

        A dual grate gives char-less ash ! Like white flower .

For strength use a 5mm perforated iron plate with 5mm square holes at 5mm distance .

On top of that a stainless  1,5 mm plate with oblique cuttings in windows shape4x8mm ,   Change this once a year.

 

Oblique fuel stock in a TLUD     with airflow  attenuating fuels as sawdust, pine needles ,twigs  is THE  solution for a clean and faster ”OBLIQUE SWEEPING FLAME” burn !!(B Pat P.F.)

 

TEG ! Keep in mind it works on temperature DIFFERENCE not on temperature alone !

Clay is an ISOLATER ! No good here . CONDUCT a hot place like the grate prolongation or Cu or Alu  conductor bridge (through clay )to the hot side of TGV and  a metal heat conductor  bridge the cold side to the ground or water vessel or boiler container .

Use an Amp meter to see” real” energy . Volt is not energy but potential to energy .

Chose one power-full enough TGV  to fullfill your GREATER DREAMS than  may be realistic .

Volt xAmpères=WATTS  keep that in mind; The server must be stronger  than the user …Or VOLT drops,Amps  drops Watt drops.

And RECLAME is always brighter than reality .

 

       Your Wageninger  naigh(El)-BOER

 

P.F.

 

 

 



Onderwerp: Re: [Stoves] Fuels of the future

 

Dear Jed

 

The critical thing about the grate is that the fuel should feed down the grate by itself for the most part. At 10 degrees the grate needs to be shaken occasionally. That could be a ‘feature’ in some places, not in others. It depends on what you want. 

 

The figure of 20 degrees is not magic, it is just ‘more’. 

 

The grate gap will depend on the fuel. What you do not want is char in the ash if the intention was to burn it. What you describe is different of course.

 

Good luck with the trip. May you help to ‘stay the hand of the oppressor’.

 

Regards
Crispin

 

 

 

Dear Crispin

 

I use stainless steel rods 8mm with gaps of 8mm. This allows the pilinut shells to fall off after it has fully carbonized. Will adopt the idea of the tilted grate 20 degrees. 

 

Also Im struggling with TEGs. Its an amazing project and still cannot get it started. I suppose  it would be very easy to simply embedd the TEGs into the clay wall and poke the wiring out to a fan or a charger. Could you please tell me more. about this..

 

News on the side.... im contemplating about joining a humanitarian mission next week. There are close to 3,000 refugees that fled from a conflict zone. The place is Tandag in the province of Surigao del Sur. Their tribal leaders and their teacher were executed by a paramilitary group who was organized by the Philippine Army.. the  evacuees are in a sports complex. My friends are going for a feeding mission. am raising some funds for my plane fare. also thinking about bringing my stove and have it tested there... .. to cook, to make bio char.. to use the biochar for sanitation.. to make compost,.... to teach people on approtech.... 

 

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 

 

Dear Jeb


With that layout and refuelling you will able to offer something that can be run indefinitely. Very good. 

 

The way we handled the ‎coke and ash was to tilt the grate downwards toward the fire. In the set of drawings on my website (Library/Stoves/GTZ7) the grate is not tilted enough. It should be about 20 degrees at least. The far end is upturned a little to catch the coke/char and not let it pile up against the far wall. 

 

The TLUD fire is built on top of the grate perhaps 250 mm high.    The final version has a 50 watt 12 volt TEG on the heat exchanger with two computer fans cooling it. The idea is it can run a TV and lights. 

 

‎I found in experiments at YDD that the grate for wood should have quite small gaps - 4 to 5mm. It really reduces the char loss in the ash. For reasons which are not clear, round bars accomplish this better than flat upper surfaces. Still thinking about that. 

 

Regards 

Crispin 

 

Dear Crispin

 

I just realized now reading from your remarks... that what im doing is a cross draft gasifier. Thanks for bringing that up. 

 

The material from YDD will surely help. My crossdraft feeding of fuel on the side port comes in contact with the hot charcoal bed. The fresh fuel either comes on the side, or on the top of the hot char bed. But wood sticks can be poked under the hot char bed and they give better results. 

 

Im writing a narrative of the details of the anatomy of the stove as Dr. Paul requested. Will post it as soon as i was able to get the size of the document down to less than 1.5 MB. 

 

Regards

 

Jed 

 

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