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

[AJH]

On Thu, 12 Jul 2007 09:43:01 +0200, Crispin Pemberton-Pigott wrote:

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

I'm pretty certain Aqua Das managed to melt brass with his Dasifier
which means it reached about 1000C and he was using whatever wood was
at hand, dry wood should reach about 1600C but in practice it won't
melt iron (1530C).

> I personally don't see why some of the waste heat can't be used to dry the
>wood below 15% moisture.  


Nor me, this could be the last stage in the "cascade" of uses of the
heat that exits the kiln. In practice you will have to use at least
4MJ of heat for every kg of water driven off, not normally worth it in
a fire but it could easily pay if your aim is higher temperatures.

AJH