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一、概况为了进一步提高加热炉的热效率,必须将燃烧的过剩空气系数(a)控制在最佳值。烟气中的含氧量能正确的反映出过剩空气系数的大小,在完全燃烧条件下,其近似表达式为:a=(21)╱(21-O_2)。式中O_2为烟气中的含
I. Overview In order to further improve the thermal efficiency of the furnace, the combustion excess air ratio (a) must be controlled at the optimum value. The oxygen content in flue gas can correctly reflect the size of excess air coefficient. Under the complete combustion condition, the approximate expression is: a = (21) / (21-O 2). Where O_2 is contained in the flue gas