[Stoves] Crispin´s kiln-was Re: Traditional Charcoal Making

Crispin Pemberton-Pigott crispinpigott at gmail.com
Thu Jul 12 03:43:01 EDT 2007


Dear Kevin

I won't repeat all that you said in the long message just to agree with it
(the multiplicity of small systems...) however the key is:

" With dry fuel (say 15% moisture) and good burners (control over primary
and secondary air, good mixing), you probably have a good chance of
attaining your desired maximum temperatures."

It is about this that I want assurances.  I have not been making and using
TLUD's or other gasifiers and I don't have a feel for nor measurements on
the excess air and temperatures.

There seems to be a lot of agreement that a flame temperature of 1300 is
possible with wood gas.

I wanted to write 'biofuel gas' as a nod to the state of the art, but that
leads naturally to the term bio for the fuel and gas for the output, which
gives 'biogas', a term which is already taken!  So wood gas is it.

 I personally don't see why some of the waste heat can't be used to dry the
wood below 15% moisture.  That should be factored into the equation from the
start.  If the required temperature is affected much by the H2O in the fuel
it would not take much effort to habitually dry the wood.

Thanks
Crispin




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