Stovers,
I am forwarding a message from Paal Wendelbo this is quite informative
about pyrolysis of grass fuel in his Peko Pe. It should apply to all
true TLUD stoves with full diameter access to the fuel chamber.
I now ask Paal: Please discuss the "grasses". There are so many
types. Do your comments / experiences relate to certain types (such as
those with nice stiff stems, which species??) more than to other types
of wavy / leafy grasses?
Also, the diameter of you stove is important to get 1/2 kg in a bundle
that is 20 cm tall. Did you have stoves with different diameters?
Very important info you gave about difficulties when the grasses are
simply packed in (not in bundles of vertical stems).
Paul
Paul S. Anderson, PhD aka "Dr TLUD"
Email: [email protected] Skype: paultlud Phone: +1-309-452-7072
Website: www.drtlud.com
On 8/23/2013 3:09 AM, Paal Wendelbo wrote:
Dear /Janitha Bandara///
Thanks for mail. I can’t say I have done any gasification researches
for grasses, but In have done a lot of practical use of straw (
hyperrenia rufa) as fuel for household cooking in Uganda in 1995, with
the Peko Pe TLUIFD-ND stove. We found the best way to utilize the
straw was to cut it to the height of the stove, 200 mm, made it into
bundles of ½ a kg and put it into the stove. The bundles was burning
nicely without smoke for about 20 minutes on the flame and another 20
minutes on the glowing since the glowing straw did not collapse like
other types of fuel.
You have a nice clean flame on the generator, probably a bit too high,
depend what kind of use//it is designed for. I should like to know
more about the aim of the construction. Is it to produce gas or to
produce energy for something else?
Regarding I insulation, be aware of higher temperature will strain the
metal in the combustion chamber, air could be better with double
function, cool down the temperature on the metal and the same time
preheat secondary air.
If you stamp grass into the generatorto prolong the process, there
will be a problem of air going through, a 50 mm vertical channel in
the middle will solve the problem.
With regards Paal W. [email protected] <mailto:[email protected]>
*From:* janitha chandimal <mailto:[email protected]>
*Sent:* Wednesday, August 21, 2013 11:32 AM
*To:* [email protected] <mailto:[email protected]>
*Subject:* Grass Gasification
Dear sir, Pall Wendelbo,
I m writing this according to the information got from Paul Anderson,
Golden, Colorado and He said that you had done gasification researches
for grasses. Me too is doing my masters research on gasification of
guinea grass (Panicum maximum) and I have got some fine results. It is
a small scale system having 700 mm height and 200 mm in diameter. But
the main problem involved is the quick exhaustion of feed stock and
the compaction of grass. I have here by attached my drawing and few
pics of the flame. looking forward to hear from you soon. Thank you.
Best regards
--
*/Janitha Bandara/*
/PG Student, Dept. of Chemical & Process Engineering, University of
Moratuwa, Sri Lanka/
/0094713058696/
//
/*Take Hands in Reducing Consumption, Saving Resources & Protecting
Environment*/
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