[Stoves] Stoves for Ukraine?

[Harris, Kirk]

Dr. Adam,

Thank you for your questions.

The air moves upward through the stove, as in other stoves, since the 
hot gasses inside are less dense and lighter in weight then the 
surrounding air.  This makes the flame gas buoyant in the atmosphere and 
so it is buoyed upward by the heavier air.

It can use pellets, found wood, or any suitable dry biomass that is 
porous enough to allow the gasses to pass upward and dense enough to 
give some good cook time.  When backpacking I use found sticks arranged 
vertically in the fuel chamber.  I pack them into the stove until I can 
shake the stove and it just stops rattling. This is compact enough to 
give a good cooking time, and loose enough to let the gasses pass.  The 
fuel cannot cover the secondary air holes.

There is no double wall, only the single tin can.  It was designed to be 
simple, cheap to build, and light weight to not be a burden to carry on 
my back while backpacking.  The single wall design is not as efficient 
as the double wall design, but it works.  The secondary air is still 
preheated since the hot tin can heats the surrounding air which then 
rises to enter the secondary air holes.  There are commercial stoves 
which are more efficient, if you want to pay to buy  and transport 
them.  For a situation like Ukraine, with so much need, a simple and 
easily made stove from readily available materials might be better.

There are lots of hobo type stoves on the internet, but they really 
smoke and have to be constantly watched and fed with fuel. This TLUD 
burns cleaner and needs no attention while cooking.  It is a nice 
balance between more efficient stoves and hobo stoves.

Respectfully,

Kirk H.

On 3/14/2022 1:44 AM, dr.adam wrote:
> hmm,
> Question: How comes the air through the primary air holes upwards?
>
> 1) It is used with *pellets *only and the air will pass 
> through/between the pellets ??
> 2) There is some space, *double wall* between pellets and outer wall 
> which is not shown on the drawing ??
> Thanks
> Chris ADAM
>
> On Monday, 14 March 2022, 10:59:19 GMT+3, Harris, Kirk 
> <gkharris316 at comcast.net> wrote:
>
>
> All,
>
> This stove was designed for backpacking, and would work for such a 
> situation.  It has been on this list before.  It is cheap, portable, 
> and easy to make using a single food can.  It works well and is easy 
> on fuel use.
>
> Kirk H.
>
> On 3/12/2022 9:32 AM, Ronal Larson wrote:
>> Paul and list, cc Kevin
>>
>> 	I suggest Kevin’s recent promotion of a small hole in the middle of a traditional 3-stone fire.  Stacking is non-standard and importan.
>>
>> 	The resulting char should be especially helpful in the fields.
>>
>> 	Better than zero cost.
>>
>> Ron
>>
>>
>>> On Mar 12, 2022, at 9:30 AM, Paul Arveson<paularveson at gmail.com>  <mailto:paularveson at gmail.com>  wrote:
>>>
>>> I am getting requests from Rotary clubs and other charities for stove designs appropriate for Ukrainians -- for both cooking and space heating.  I wonder if you could suggest suitable products and/or designs that I could share.
>>>
>>> Thanks,
>>>
>>> Paul Arveson
>>> Solar Household Energy, Inc.
>>>
>>>
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