[Stoves] Help! Are there insulated biogas stoves?

[Anand Karve]

Dear Karolina,

The pot, which is kept on the stove, should be provided with a well
insulated jacket which makes the flue gases pass through the gap between
the pot and its jacket.  We obtained 90% efficiency with such pots, when
tested on stoves using either LPG or charcoal. I am quite sure that it
would work in the case of biogas too. The practical difficulty with this
solution is that one has to have a jacket for every pot.

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 Mon, Nov 13, 2017 at 12:51 PM, Karolina Hagegård <
karolinahagegard at gmail.com> wrote:

> Hi
>
> I'm currently in Kenya, trying to start up a biogas company:
>
> https://karolinabiogas.wordpress.com/present-project/
>
> I'm having problems finding proper biogas stoves!
>
> Yesterday I had a meeting with a local stoves expert. He sells extremely
> efficient insulated stoves for firewood, or the husks of coconuts, or "any
> solid combustible material that you want to put in", and he also sells
> completely uninsulated biogas burners. So I asked if he wouldn't be
> interested in developing an insulated biogas stove for me, by the same
> principle as the firewood stove he had, and I'd be selling it together with
> my digesters. To my surprise, he wasn't!... He said that in his experience,
> gas needs lots of air, so you couldn't insulate it... Is it true? I told
> him I'd think about it and get back to him.
>
> This morning, I googled, WITH quotation marks, "insulated biogas stove".
> There were no direct hits. I tried "insulated biogas cooker" and "insulated
> biogas burners" but still no hits...
>
> So how is it? Is it really true that you can't make an insulated biogas
> stove? What's the most energy efficient alternative I can go for?
>
> Most grateful for any advice!
>
> /Karolina
> Kenya
>
>
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