Handmade barrel stove provides 8 hours of heating and cooking with one load of sawdust — smokeless and unattended. All gases go up the chimney. He heats over 1000 ft2 of uninsulated building. The basic idea can be scaled up to industrial sized heaters and dryers or scaled down for cooking and camping. Other materials such as rice hulls can be used instead of sawdust.
rice hull stove
ESR: Making Waste our Greatest Resource
“At ESR we design sustainable solutions to waste and energy challenges. These solutions weave together engineering and ecological thinking and are deeply embedded in the economic, social, and cultural context of their application.