[Stoves] Modified traditional Mongolian stove - pictures
Ronald Hongsermeier
rwhongser at web.de
Sat Dec 25 07:57:23 CST 2010
Dear Crispin,
If it's okay with you, I can put the page and pictures in a .zip,
tarball or 7zip file for anyone who has bandwidth-challenged connections
or other problems reviewing the pics.
Merry Christmas!
Ronald von Nebendemkaltenkachelofen:/
On 22.12.2010 17:50, Crispin Pemberton-Pigott wrote:
>
> Dear Friends
>
> For a limited time I have placed some photographs with long file names
> showing how to modify a traditional Mongolian coal stove. This
> modification seems to reduce fuel use in the field by at least 20%, CO
> by 50% and PM by 80%. If you are in an area that burns coal and needs
> space heating (north Asia for example) you may want to have a look and
> download all the photos (7 meg) for use later. Space is limited so
> they will be replaced with other developments as time passes.
>
> It costs $1 locally to make the adaption, which is saved within 2-3
> days depending on the weather.
>
> We found locally a stainless steel tube 63 x 1.5mm wall. It is cheap
> enough to be a viable large scale option. The modification takes a 28
> cm long pipe cut at 45 degrees on both ends.
>
> In the photos this is substituted with a rolled sheet of galv sheet
> showing that it can be done with scrap steel if nothing is available.
>
> If there is interest a page can be developed for the BioEnergy site
> explaining the same thing in more words.
>
> The files are at:
>
> www.newdawnengineering.com/library/stoves/shatlil
> <http://www.newdawnengineering.com/library/stoves/shatlil>
>
> It shows how to modify the stove using bricks and clay (plus a piece
> of pipe), how to light it using the End-Lighting Cross-Draft
> technique, and how to refuel it. There are actually two ways to refuel
> it -- the one shown is refuelling through the fuel door. It can also
> be refuelled by opening the top of the stove to achieve the same thing.
>
> The power is variable, not just by changing the amount of fuel in it.
> The combustion chamber can be narrowed with ordinary bricks. The stove
> can be run in 5, 7, 11 and 13 kW configurations. For example tonight
> it is -28 C and a small stove will be used wide open to give the
> needed heat. In a week it might be -12 at night so the stove used
> drops in 2 long bricks and continues to fill the (now narrower) fuel
> area.
>
> In all cases the coal is ignited at the end where the outlet to the
> chimney is located and the fuel piled towards the door. This layout
> accomplishes a sort of sideways TLUD that can be refuelled without
> creating smoke at the end or having to reload at the very end of the
> burn. Hot coals and anything else that can burn is raked to the
> chimney end and some wood tossed on top. Flames develop. New coal is
> added between the fire and the door and the process continues.
>
> Two stoves have been made as a trial with a larger heat exchanger and
> a slightly widened combustion chamber to make it easy for women to
> install standard bricks (women do most of the stove bricking and
> maintenance).
>
> The process of burning increases the burn time by about 100% and
> moderates the kW so the gers (yurts) are heated more or less
> constantly instead of a huge fire followed by rapid collapse.
>
> This work is supported in many ways by the Asian Development Bank,
> World Vision, XacBank Mongolia, Dalkia, Mon-Energy, and other
> organisations and individuals. Support is in the form of laboratory
> testing, advertising, demonstrations, field testing and gathering
> feedback.
>
> Regards
>
> Crispin
>
>
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