[Stoves] Re Trying new burner for TLUD's

[Marquitusus]

Dear Jock, 

your design sounds interesting.
Can you say what distance you put between the secondary air intake and the three deflection washers?
And also the distance between the fuel retention plate and the secondary air intake? On the other hand, which function does this retention plate do? Maybe to approach the syngas to the secondary air intake?

Anyway, all the comments are appreciated, as all tends to improve the combustion process.

Thanks
Marc

Date: Mon, 25 Aug 2014 21:53:41 +0800
From: crispinpigott at outlook.com
To: stoves at lists.bioenergylists.org
Subject: [Stoves] Re  Trying new burner for TLUD's

‎Dear Jock





We are giving different sorts advice. Both are needed. I am sharing generic design advice often based on test information that is not
 available to people who don't have equipment. You are giving advice about a particular iteration of a set of geometries. ‎The solution you have works and as you say, is repeatable
 within limits. 





There are probably a dozen generic solutions needed for cooking around the world with different sizes of each available. 





Suppose the sizes needed were five. That means we need maybe 60 models without overlap. 





That said, I don't think a concentrator ring is needed. The effect can be achieved with air control. If a ring is used it can create problems but on the other hand it may be used to
 create something with a feature that is not otherwise possible. So far I have not seen one, but perhaps will eventually.






Regards 

Crispin

‎


Crispin & Julien



When will folks ever learn?  I get such good results I am surprised that folks have not tried to replicate them.  It is shame that folks still use concentrator rings.



Have you seen my trash can stove?  It is actually one of my three can TLUDs in a 33 gallon Trash can which acts as a safety device as well as a way to capture some of the heat lost horizontally from the TLUD to do  some preheating of BOTH the primary and
 secondary air.



Works like a dream.  Very repeatable and very predictable.



Cheers,



Jock



Jock Gill
P.O. Box 3
Peacham,  VT 05862



Cell: (617) 449-8111



google.com/+JockGill



:> Extract CO2 from the atmosphere! <:



Via iPad


Begin forwarded message:





From: Jock Gill <jock at jockgill.com>

Date: August 25, 2014 at 7:43:14 AM EDT

To: "marquitusus at hotmail.com" <marquitusus at hotmail.com>

Subject: Re: [Stoves] Trying new burner for TLUD's







Sir,



I have long since abandoned concentrator rings. I find I get much better results with a flame retention plate above the fuel bed and just below the secondary air supply. I combine this with three deflection washers a bit above the secondary air intake.
  This creates a "combustion chamber".  The flames remain mostly in the chamber - very dynamic and quite noisy.  I cook over the column of hot gases raising up the draft pipe.  When properly tuned, there is essentially zero soot deposited on the pots.  This
 indicates a clean burn.



BTW, Students at Dartmouth College have created a fan powered TLUD with a top plate such as yours.  It can use saw dust as a feedstock.



Regards,



Jock


Jock Gill
P.O. Box 3
Peacham,  VT 05862



Cell: (617) 449-8111



google.com/+JockGill



:> Extract CO2 from the atmosphere! <:



Via iPad


On Aug 24, 2014, at 4:54 AM, Marquitusus <marquitusus at hotmail.com> wrote:






Hi stovers, 



I never liked (for cooking purposes) the single-thick flame that comes out of the concentrator ring that use most of the TLUD's designs, because you get a narrow over-heated spot in the bottom of the cooking pot, and in a result of that, you don't get a good
 heat distribution in the pot.



I made a new "diffuser" burner, which gives a circular flame area, instead of a single one.



http://youtu.be/mhl6tt2A4T0






Anyone knows any other works on this aspect?



Thanks

Marc 



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