[Stoves] Released smoke as % of fuel

[Paul S. Anderson]

Stovers,

Tonight is chilly in Hyderabad, India.  I saw several small groups of children
and men making tiny twig fires (very smokey) to get some warmth.  Then the
charcoal is spred out on the ground (about 40 cm diameter) for some further
warming.  A "space heater" burning twigs would be an interesting item.

In a smokey fire, what percentage of the fuel's energy content is the smoke?  I
have assumed in the past that it is actually a very small percentage that is
highly noticable.  So, are the twig burners actually get most of the heat
(although the heat mainly passes them).??

If one kg of dry biomass is combusted (by any device), there are some emissions.
 CO2 and H2O are the desired results.  All the rest is basically undesirable. 
Collectively it can be called smoke (including the invisible and oderless CO.) 
Or PICs, products of incomplete combustion.

I am not very concerned about charcoal remaining in this case.

Paul
-- 
Paul S. Anderson, Ph.D., Geography professor - Emeritus
Telephone:  USA-309-452-7072 (residence and office)
Internet site:  www.ilstu.edu/~psanders
For my gasifier stoves info, go to:
http://bioenergylists.org/contributors#Paul_Anderson





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