Julien, Have you tried top lighting the 30 gal drum of straw? Do you have problems maintaining an open, central, air flow, pathway? Lanny
----- Original Message ----- From: "Julien Winter" <[email protected]>
To: <[email protected]> Cc: "David Yarrow" <[email protected]> Sent: Tuesday, April 09, 2013 8:19 AM Subject: [Stoves] The Art of Using Grass Bundles in TLUD Stoves
Hello Stovers; Thanks for all the excellent advice on using wheat straw as a fuel. I ran some tests over the weekend, and I have summarized the results with photos in an attached pdf. The problem is that compact straw is good heat insulator and resists convection by air. So it is difficult to sustain the momentum of a gasification reaction in the neighborhood of 700 C or more. What I did was to compact straw into a paint can, but with a cylindrical hole up the middle, then lit the straw at the bottom of the hole. This was successful in paint cans, but not when I scaled up to a 30 US-gallon drum, because the linear distance for convection of oxygen and heat became too great. So, next weekend I will have to do some more mucking around. I will let you know how I get on in a week or so. All the best, Julien -- Julien Winter Cobourg, ON, CANADA
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