[Stoves] The Art of Using Grass Bundles in TLUD Stoves

[Crispin Pemberton-Pigott]

Dear Julien

 

If you can, drive down the 401 to visit Alex English and discuss this with
him over a cup of tea. He knows a lot about the subject of burning grass
(+hay).

 

Bring a pencil and notebook :) 

 

Regards

Crispin (from Waterloo)

 

++++++

 

Hello stovers;

 

I have read with great interest about the Vetiver Grass bundles used in Peko
pe TLUD stoves in Haiti.

 <http://haitireconstruction.ning.com/page/tlud-grass-stoves>
http://haitireconstruction.ning.com/page/tlud-grass-stoves

The reason for my interest is that I would like to use rice straw as a fuel.

 

Does anybody have experience with grass bundles to be able to answer a few
questions:

 

How big are the bundles relative to the TLUD chamber (e.g, 80% of the
horizontal cross sectional area)?

Do you place one big bundle in the TLUD or many small ones?

Are they stacked horizontally or vertically?

 

To my mind, this all relates to how the primary air flows in the TLUD.

If primary air flows around the outside of bundles, then is there a
possibility that the fire will just burn down the outside of the bundles and
go straight to the primary air inlets at the bottom of the TLUD, bypassing
much of the fuel?  If so, we will get a bottom fire producing incombustible
smoke.  I expect there is some art to using these bundles.

 

Getting grass bundles to work in stoves is a great idea, because (for me so
far) loose straw is a smoky mess, and pelleting is too expensive for many
people.

 

Cheers,

Julien.

 

--

Julien Winter

Cobourg, ON, CANADA

 

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