[Stoves] Why not high mass stoves?

[Dean Still]

Hi Bodie,

I've liked the pot skirt stoves creating a 7mm channel gap between the pot
and the skirt made from sand/clay plus as much finely ground light weight
organic material as possible (increases insulative value).  Not clean
burning but effectively reduces fuel used to cook.

What have you been doing?

Best,

Dean

On Sat, Nov 1, 2014 at 8:51 PM, Bodie Cabiyo <bodie.cabiyo at gmail.com> wrote:

> Hi Huck,
>
> I've been working on adapting high-mass stoves to have better thermal
> efficiency because of that very article.
>
> Simply put, the problem is with the specific heat of the insulating
> material. True, high-mass materials like earth or sand have insulative
> value, but they have very high specific heat and thus absorb much of the
> heat that would go into a cooking vessel. In contrast, sheet metal has a
> low specific heat, so it absorbs relatively little thermal energy to reach
> a maximum temperature, after which point you're only heating the air
> surrounding the stove. Air, of course, has very low specific heat and thus
> it takes very little energy to warm the air immediately next to the stove
> body (though it would be more ideal to trap a layer of air so that you're
> not continually heating new air).
>
> Hope this helps!
> Bodie
>
> --
>
> *Bodie Cabiyo*
>
> Professional: carbonalternatives.org
> Personal: concentricchange.wordpress.com
>
> *Food for Thought:*
> *"A mountain is composed of tiny grains of earth. The ocean is made up of
> tiny drops of water. Even so, life is but an endless series of little
> details, actions, speeches, and thoughts. And the consequences whether good
> or bad of even the least of them are far-reaching."*
> - Sri Swami Sivananda
>
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