[Stoves] Damp fuel in TLUDs

[Anand Karve]

Dear Martin,
thanks for taking cognizance of our ELFD (Electricity-less forced draft)
Sampada stove. It is the latest brain-child of my daughter, Dr.
Priyadarshini Karve.  Heat from burning water vaporizes water circulating
around the fire box and the steam is used to force air into the flame. The
gases in the flame are combusted completely by the additional air entering
into the flame, so that the flame colour turns paler and the smoke emission
stops completely. We have made several models, ranging from firebox
diameter of 10 cm which can be used in a household to 30cm, which can be
used in a canteen. In the case of stationary use, this stove is connected
to an overhead water tank above the house. For a stove which needs to be
moved around, we provide a portable water tank having a manually operated
pump.  About 3 kg wood, costing about USCents 25, has the same calorific
value as 1 kg LPG, which costs  more than 1 US$. Apart from this, wood is
renewable. We hope to sell this stove to the cost-conscious and
environmentally conscious people.
Yours
A.D.Karve

***
Dr. A.D. Karve

Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com)

Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)

On Sat, Mar 26, 2016 at 3:44 AM, Boll, Martin Dr. <boll.bn at t-online.de>
wrote:

> Regards to all,
> Just a remark to the damp fuel discussion-
>
> It is commonly known that wood, with a small content of water ( about 10%
> water?) does better burn than "bone-dry".
> It is now re-discussed, that a small amount of hydrogen and oxygen
> generated out of water, could cause better burn (/ flame-stability?) for
> burning wood.
>
> Mind, as you know, that hydrogen has a wide range, within it is ignitable;
> most other gasses in use (except acetylen) have only a narrow range in
> mixture with air, within they are burnable. If some water-vapor was split
> into 2h and O, that would be an excellent ignitable mixture, and that could
> be a reason for better burning of slightly moistened, than bone-dry wood.
>
> - In that context I draw your memory to the Samuchit elfd sampada stove,
>  (mentioned some weeks ago).
> ( look:   http://www.indiamart.com/samuchitenvirotech/  ),
> It gets it's forced air-stream by steam-injection (by a venturi-pump).
> - Though not having seen it actually, I like that low-tech-concept!
>
> *I assume in the discussed manner: *
> In the Samuchit elfd sampada stove, there is
> as well condensation of water (falling out before the burning process) and
> as well some water-vapor, going into the burning-chamber,
> - which i guess further, could be split into 2H and O to make favor to the
> burning-process,
> especially if "very dry" wood is being burnt.
>
> - Kind Regards to AD Karve!, - who certainly can tell about facts instead
> of guesses.
>
> Regards
> Martin
>
>
>
>
>
>
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