The burning mode of hand-held stove row is as follows

Hand-fired furnaces generally use fixed grate combustion mode, and the combustion chamber is above the grate. Manually add coal to the grate, air enters from under the grate, and the burned flame enters the heating chamber through the fire-turning wall. This way of burning will emit black smoke when adding coal. Methods to eliminate black smoke: first, add secondary air above the combustion chamber; Second, the reverse combustion mode is adopted, and the air is supplied from above the coal seam, and the flame enters the heating chamber from below the grate.