печка: новый русский самовар, три кастрюльки и кривые руки

Instructable: Double wall gives efficiency and protects from wind. Burner works on well known wood gasification principle. Internal burner and outer case divided by 1cm gap. Air moves in gap upward by convection and injects via split at top of burner case into diaphragm zone (hole between two cans) mixing with wood gas. Gas mixture burns in diaphragm hole and in gap between pan and top case give