FIELD: devices for burning solid fuel. SUBSTANCE: furnace tubes for the secondary air are defined by vertical and horizontal L-shaped part. The parts are arranged along the walls of the housing over the bound of the combustion zone and are perforated. Control gates are mounted at the inlets of the vertical parts. The perforation increases in the direction of the outlet section of the horizontal parts. EFFECT: enhanced efficiency. 2 cl, 7 dwg
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Authors
Dates
1995-04-30—Published
1991-12-26—Filed