[Stoves] Traditonal Charcola Making Process / retort

[Kevin Chisholm]

Dear Crispin

Crispin Pemberton-Pigott wrote:
> Dear Friends
> 
> My ultimate vision of charcoal making is to make a huge gasifier into which
> I will put all sorts of waste biomass.  The gas will be used to fire ovens
> in which I will make high efficiency all-ceramic charcoal stoves.
> 
> The charcoal powder will then be made into fuel for the stove.  In this way
> the wasted heat (or heat potential) of the original biomass can be used to
> reduce fuel consumption.
> 
> Today's quiz:
> An MCS requires about 3.5 KW of electricity so it will need about 7 KW of
> gas heat to produce it.  
> 
> How much biomass (in KG) at 15% moisture content is required to fire 1 stove?

I would say that you would need a 1,500 RPM engine of about 750 CC 
displacement, Spark Ignition, to produce 4.0 kW of Shaft Power, 
delivering about 3.5 kW of electrical power. (I assume you need 50 Hz 
power.)

You would probably need about 4.78 kG/Hr of wood at 15% MC, yielding 
about 10.5 M^3/hr gas.

Such an engine run at 1800 RPM could produce up to about 4.2 kW 
electric, but would require about 5.74kG/hr of wood.

Best wishes,

Kevin


> 
> Regards
> Crispin
>