[Stoves] Fwd: re ELFD Sampada

[Paul Anderson]

A.D., Priya, and all Stovers.

Yes, a very nice stove with some innovations evident.   About the 
discussion, here are a few comments:

1.  Certainly SOME water is entering the stove (between the two walls), 
and there seems to be no way out except upward with either the primary 
air or secondary air.   The real question is how much water.   Priya,  
please tell us how much water enters either per usage (and how many 
minutes that is) or how much water per minute leaves the water jug (by 
weight).  And if we know the MC (moisture content) of the fuel and how 
much fuel, we can know approximately how much water is in the fuel.   It 
will be very interesting to see the comparision of the amounts of 
entering steam-water versus the water content of the fuel.

2.  Just for clarification:   From prior communications with the Karves, 
the natural draft (ND) Sampada stove is a semi-gasifier or other 
variation of gasifier, and it is not normally operated as a strict TLUD 
with a MPF (migratory pyrolytic front).   The Karves do not claim that 
the Sampada stove is operated like a TLUD stove, both by bottom ignition 
and by adding additional fuel through an opening at the top.   This 
applies to the FA (forced air) Sampada stove also.   In the video the 
ignition is clearly by inserting vertically two long pieces of 
ignition-fuel that have been immersed in the starter liquid.   Upon 
ignition, the flame front will quickly descend to the bottom of the 
ignition-fuel, and fire will be at the bottom because that is where the 
primary air is entering.

Congratulations on demonstrating a way to have forced air into stoves 
without the need of electricity!!!!

Paul

Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD
Email:  psanders at ilstu.edu
Skype:   paultlud    Phone: +1-309-452-7072
Website:  www.drtlud.com

On 3/26/2016 10:56 AM, Anand Karve wrote:
> Dear Stovers,
> I am forwarding a message from my daughter, Dr. Priyadarshini Karve.
> Yours
> A.D.Kaarve
> ***
> Dr. A.D. Karve
>
> Chairman, Samuchit Enviro Tech Pvt Ltd (www.samuchit.com 
> <http://www.samuchit.com>)
>
> Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)
>
> ---------- Forwarded message ----------
> From: *Priyadarshini Karve* <priyadarshini.karve at gmail.com 
> <mailto:priyadarshini.karve at gmail.com>>
> Date: Sat, Mar 26, 2016 at 5:33 PM
> Subject: re ELFD Sampada
> To: Anand Karve <adkarve at gmail.com <mailto:adkarve at gmail.com>>
>
>
> We cannot really say if any water vapour is going inside the fuel 
> chamber or not, and even if it is, how significant that is for the 
> combustion. The stove has a double walled structure, and the steam 
> just pushes air flow in the space between the outer and inner walls. 
> The inner wall has holes opening into the fuel chamber, and the 
> incoming air passes into the fuel chamber through these holes. Some 
> water vapour is entering through the outer wall for sure, but how 
> much, if any, is getting to the fuel chamber is uncertain.
>
> To see the operation of the stove you can direct people to two YouTube 
> video links:
>
> https://www.youtube.com/watch?v=93ui2nNWT1Y
>
> https://www.youtube.com/watch?v=mJKdw4_gFLU
>
> Regards,
>
> Priya
>
>
>
> -- 
> Dr. Priyadarshini Karve
>
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