[Stoves] Insulated pots

[lannych]

The pot module/Three Stone Stove is an insulated pot with gap and performs 
very well.
It is of double wall construction and I have used mineral wool, fiberglass 
and loose fill ash/char for insulation with good results.
The Three Stone Stove only used  476 grams of wood to boil 5 liters with an 
open fire
http://www.bioenergylists.org/en/hensonthreestone
I also used this pot module to boil, simmer and hold 5 liters with only 140 
to 175 grams of charcoal using the CRAB Stove.
http://www.bioenergylists.org/en/hensoncrab
My yet to be disclosed BRAT Stove (Bamboo Rice and Tea) only needs 250 to 
275 grams of bamboo chips to boil, simmer and hold 5 liters.
The pot module is more than "half the helper" if I may use Dr Martin Bolls' 
words and should work with most any burner/stove.
I plan to be more active with stoves this Feb and March and publishing a 
"how to build the Three Stone Stove" is on my list. The methods are very 
simple.
My next prototype will be a grain drying and storage system that will dry, 
pasteurize and fumigate (with CO) about 500 kilos of corn I hope. The system 
will cost less than $50 US. I will attempt to store corn 3 years by 
fumigating and pasteurizing as needed. When the grid goes down you are all 
invited to my house for tortillas.
Can't wait, on fire for stoves!
Lanny Henson


----- Original Message ----- 
From: "Robert Taylor" <rt at ms1.hinet.net>
To: "Crispin Pemberton-Pigott" <crispin at newdawn.sz>; "Discussion of biomass 
cooking stoves" <stoves at listserv.repp.org>
Sent: Tuesday, January 09, 2007 9:54 AM
Subject: [Stoves] Insulated pots


> Dear Crispin
>
>> The BEST energy reducer for cooking is an insulated (on top and sides)
>> pressure cooking pot!
>
> What is a good insulating material(s) for such a jacket? Presumably it 
> needs
> to be fireproof (at least at the bottom), and preferably easy to clean and
> not infiltrated or otherwised damaged by escaping steam or by hot wet food
> if the pot boils over (especially if used with an ordinary pot instead of 
> a
> pressure cooker).
>
> When Martin was talking about tea-light candles a while ago I wondered 
> about
> using an insulating jacket, perhaps with a skirt that extends downward a
> little below the pot, for slow cooking over a very small flame such as 
> from
> a candle. But a jacket that can also be used over a larger flame (from a
> stove) without being damaged might be very useful too.
>
> I guess one way to protect the insulator from the contents of the pot 
> would
> be to invert a slightly larger pot over the cooking pot, and insulate the
> outside of that. But the insulator still needs to be fireproof. Any
> suggestions for suitable materials?
>
> Put a vent in the middle of the inverted pot to let combustion gases 
> escape
> and you have a glorified pot skirt. But would an insulated one outperform 
> a
> plain metal one by enough to make it worthwhile? And how would it compare
> with a close-fitting insulating jacket?
>
> Best regards
>
> Robert Taylor
>
>
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