[Stoves] Riser Height and a 'Counter-Current' Woodgas Burner - YouTube Vid

[Paul Anderson]

Crispin,

1.  what are the specifics of "lit from one sid such as the front".   
Could mean several things, and what are the air movements.

2.  STACKED wood (vertically) is a common practice for residential 
TLUDs.   Much used in Uganda by Awamu.   Works very well.   I refer to 
wood "segments" that are not chips or pieces and not long sticks.  Cut 
to the fuel heigth in TLUD chamber.   There is every reason to expect 
success also in larger diameter TLUDs.    (these are not loosely 
stacked).   See also video of Prime stove of Indonesia, but they stack 
in through a reduced sized hole --- easier when full diameter is open 
for loading..

3.  I have done 50+ kw thermal in AVUD operations of Chip Energy's 
biomass furnace.   But not anything as TLUD in the 15 - 20 kw(t) 
range.   This size of unit should be a new topic/thread.   Please start 
it with further comments about such units in places you mentioned.   And 
tell us the uses for that amount of heat in those places.

Paul    (back from Guatemala, headed to ETHOS and Apro in a couple of days.)

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 1/26/2016 9:52 PM, Crispin Pemberton-Pigott wrote:
>
> Paul or Julien
>
> Based on that layout, have either of you made something in the 10-20 
> kW range? There are quite a number of TLUD’s these days in the 10-25 
> kW range being sold in Eastern Europe, China (to a small extent) and 
> Mongolia. It seems this is a highly desirable power range.
>
> I was looking at some firewood burners recently and to my surprise 
> there is emerging a tendency to use sawn wood (for example a foot 
> long) standing vertically in a stack, lit from one side such as the 
> front. It raised eyebrows but it is supposed to be reducing emissions 
> at high power.
>
> Dr Nurhuda has made several models using vertically stacked wood but 
> nothing in that league for power. It seems several advantages appear 
> when the power is high enough: the wood, relative to the chamber, 
> appears ‘small’ and it tends to act more like a pellet of chunk.
>
> If there is something you want tested at scale, meaning size, I can do 
> it and report how it goes.
>
> Regards
>
> Crispin
>
> Julien,
>
> It is great to see your systematic approach to these issues.
>
> Paul
>
>
>
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