[Stoves] Trials on TLUD Gas Burners - Counter Current Flow
Crispin Pemberton-Pigott
crispinpigott at outlook.com
Sun Aug 3 08:37:27 CDT 2014
Dear Julien
There are definitely a lot of photos so I think you should first look in the catalogue of stoves on this site. Paul Anderson and John and I were collaborating a lot in 2003 using opportunities provided by GTZ-ProBEC.
So the early material is from then and the design was made available in full by John some time after that, meaning it is in the public domain.
So Paul and I have a lot of material. There were a few tests done at (early) SeTAR giving gas emissions and power curves. He was trying to make a >5kW space heater with constant heat got about 6 hrs. It happens also to be able to cook one pot.
The fuel was 12mm coal chips which are a waste product, basically, from Witbank. Witbank coal is widely used in the highveld townships by the poor and it is wastefully burned. John managed to get the emissions down well over 90% and the fuel consumption cut by peraps 50% or more. It seems 70% is possible (that number is from other research).
One of the practical problems with gasifiers is maintaining a flame under variable conditions. The angled cone with preheated secondary air (using a jacket around the reactor) stabilises the flame by burning at least initially, a small amount of the top char.
Regards
Crispin in Kitchener (who was that guy??)
From: Julien Winter
Sent: Sunday, August 3, 2014 09:13
To: Discussion of biomass cooking stoves
Reply To: Discussion of biomass cooking stoves
Subject: [Stoves] Trials on TLUD Gas Burners - Counter Current Flow
Hi Crispin et al;
It is good to hear that John Davies has done some work using a cone to
make a counter flow burner. Does his stove have a name, is there data on
the burner performance, or any pictures on the web?
Cheers,
Julien.
--
Julien Winter
Cobourg, ON, CANADA
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