[Stoves] Charcoal Rocket Stove

[Paul S. Anderson]

Stovers,

> Dean Still wrote:
snip--
>> The Rocket was fastest because there is a lot of draft resulting in higher
>> power. I have observed that emissions do go down in a Rocket type stove
>> AFTER the chamber gets hot AND when there are air holes between the chunks
>> of charcoal. I did not see any additional benefit to adding secondary air.

A hot chamber will result in a stronger draft, meaning more O2 (in air) 
getting
to the carbon with a better chance of getting more complete combustion (more
CO2 and less CO ).

When there are air holes between the chunks, there is a better chance for some
of the O2 in the air getting past the hot char and therefore becoming 
available
O2 for secondary combustion.  Essentially, secondary air is entering via the
primary air openings.

If you have a hot fire of charcoal, SOME secondary air is essential to combust
the created CO (to make CO2).  Starve the secondary air in the device and you
will have higher bad emissions.  And if the CO gases are too cool when the
secondary air enters (and/or if there is no spark/flame present), the CO will
not ignite, again resulting in poor emissions.

I assure you that the above paragraph is true.  And it is easier said 
than done,
ESPECIALLY when trying to do it in the small sizes of cookstoves.  If 
this task
were easy, it would have been accomplished a long time ago.  Keep trying and
best wishes for success!!!!

Paul



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