Resend: ARC R&D on ‘Tier 4’ Stoves

Hi All,

Sorry about the technical difficulties in our last newsletter.

We wanted to make sure you got the video about the new swirling flame TLUD invented by Kirk Harris and tuned at the ARC lab.

The new book, “Clean Burning Biomass Cookstoves” describes how to make the stove (and 4 other ‘Tier 4’ stoves) and it can be downloaded at

Click the image of swirling fire below to see the the movie, or go to Youtube directly (

All Best,

Sam and Dean at ARC

See the Swirl Stove in Action at