[Stoves] Changing rate of pyrolysis front in TLUDs

[Paul S. Anderson]

Dear Andrew, Dale and all.

> [Andrew]  One of the things I never resolved about a long stack TLUD fire was
> how the air supply varied as the column of hot gases above the fire
> lengthened and the column of fuel (and its resistance to air and
> offgas) shrank. I think there is a need for an experiment with a
> constant mass air supply.

I think the closest to this experiment with constant mass air supply was
reported this past January by Dr. Dale Andreatta, but I am not sure if the
length of his TLUD unit was sufficient to detect any changes in rate as the
pyrolysis progresses.  See his report at:
http://bioenergylists.org/stovesdoc/Andreatta/TLUD_Report.pdf

I think the more important question is how the rate could change when the air
supply is NOT constant, but is left to natural draft or to issues of resistance
to the flow of the air.

-- 
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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