[Stoves] Blue flame combustion

[Alex English]

Hi Rolf,
> Nice video, Alex!
>
> thank you for sharing it.
> But I must say I cannot distinguish between the initial flame colour and that at the end of the film.
They are the same. The video didn't show the orange flame so I have 
attached a picture from another time which is representative.
>
> The flame looks very clean! Mixingwith 1.-2. air doesn't seem to be perfect,in my eyes they mix right in the burning zone.
> Perhaps a better swirl or longer stay before actually burning could make the flame more uniform- if needed!
The secondary air enters tangentially into a 5cm diameter pipe about 18 
cm below the flame. It mixes from there on up as the pipe expands to 
10cm diameter and then wider still in the glass portion.  The flame 
speed of the mix determines where the flame begins. It is never fast 
enough to burn in the 5cm section. The orange flame is stable begining 
in the 10 cm portion. In a previous configuration it would occasionally 
form a thin blue sheet of flame in the 15cm chimney. I agree that more 
could be done to improve the blue flame stability but part of the 
exercise was to point out that the orange flame had advantages.


I wonder just how big a continuously fed TLUD can be made.500 kW ? 1 MW ? Are there any experiences in this range?

What are you referring to when you use a phrase like "continuously fed TLUD" ?

People on this list are aware that some people like to call any air controlled stove a TLUD. Paul is clear that it needs to have a descending pyrolysis front to fit his definition of a TLUD. The doctor should know!

  I have some experience in that range with a continuously fed chain grate stoker which can carbonize wood chips and burn the gasses thoroughly above.

Alex



  Rolf




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