Re: Lanny's Camp Stove Mod #3

["elk" <elk@wananchi.com>]

Hot stuff Lanny! Your new stove appears to really deliver the heat to the
pot.

By comparison to your stove bringing 6 litres of water to boil in 18 minutes
with 670 grams dry wood; we burn regular lump wood charcoal in a  ceramic
lined 'Jiko', and it takes us 10 minutes to bring 2 litres of water to boil
with a fuel load of 750 grams.

It'd be interesting to hear how long it takes, and how much of the same wood
is needed, to bring the same amount of water (6 litres) in the same pot over
a 3-stone fire. Could you do this for us?

We (at Chardust in Nairobi) use regular wood charcoal as a reference for
noting the (approximate) heat value of our various agri-industrial waste
origined charcoal briquettes. Of course there are a number of variables that
must be considered other than simple time-to-boil (distance between coals
and pot bottom is a big one), but if you keep the pot and water volume the
same, some good comparative data can be obtained for your stove.

After all- whether we are designing and building stoves or fuel, the local
'base-line' should be identified, tested and well understood in order to
give us the yardstick with which we can measure our progress.

Keep up the good work.

elk


--------------------------
Elsen L. Karstad
elk@wananchi.com
www.chardust.com
Nairobi Kenya



----- Original Message -----
From: "Lanny Henson" <lanny@roman.net>
To: <stoves@crest.org>
Sent: Monday, November 25, 2002 6:45 AM
Subject: Lanny's Camp Stove Mod #3


> I have made a new burner for the camp stove and added a bottom. I made the
> fuel magazine wider at the opening to better slide crooked sticks. Then it
> funnels to a 3" square burn zone. I was able to get a clear burn with damp
> sticks along with a large 2" dia stick.  I also tried some wood that I
dried
> in the oven at 275 degF but the sticks burned too fast and smoked. I
finally
> got a clean burn by only using two 1" sq sticks an blocking off the air
flow
> through fuel magazine. It took 23.5 ounces of this too dry wood to bring 6
> liters of 60 degF water to a boil in 18 min from a cold start.
> I will make more improvements later after I build a 2 pot African stove
with
> Dean Still.
> Lanny  (Having too much fun)
> http://www.lanny.us/campfs3.html  about 200kb
> Lanny
>
>
>
>
>
> -
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> Elsen L. Karstad, elk@wananchi.com www.chardust.com
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-
Stoves List Archives and Website:
http://www.crest.org/discussion/stoves/200209/
http://crest.org/discussiongroups/resources/stoves/
>
Stoves List Moderators:
Ron Larson, ronallarson@qwest.net
Elsen L. Karstad, elk@wananchi.com www.chardust.com

Other Biomass Stoves Events and Information:
http://www.crest.org/articles/static/1/1010424940_7.html Bioenergy
http://www.crest.org/articles/static/1/1011975339_7.html Gasification
http://www.crest.org/articles/static/1/1011975672_7.html Carbon

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