[Stoves] Char from TLUDs and retorts

[Peter Verhaart]

Regarding the charcoal yield as a function of charring temperature the 
following.
At the Woodburning Stove Group we discussed this and it was suggested 
that, if the temperature could be kept at a certain (fairly low) level 
for some time, the charcoal yield could improve. The argument was that 
at a lower temperature the tars would not evaporate or be dispersed but 
could remain in the wood structure and decompose in situ contributing 
more carbon to the char. We had no means or time or approval to test 
this theory.

Peter Verhaart


AJH wrote:
> On Tue, 10 Apr 2007 07:39:44 -0500, Paul S. Anderson wrote:
>
>   
>> About the carbon conversion efficiency of the TLUD:
>>     
>>> I've not managed better than 25% of the dry weight, whereas with a low
>>> temperature retort I've achieved 45% albeit with a <80% fixed carbon,
>>> at a guess.