一、正确控制锅炉排烟的过量空气系数α_s 水平式往复炉排锅炉的炉膛出口过量空气系数α_l,可控制在1.25—1.45之间,加上各受热面烟道的漏风后,排烟过量空气系数α_s,可控制在1.6—1.9之间.α_s大于2是不经济的.因为排烟损失q_2与排烟容量、α_s成正比.α_s越大,q__2相对加大,则锅炉热效率降低. 小工业锅炉,目前一 First, the correct control of the boiler exhaust air excess coefficient α_s horizontal reciprocating grate boiler furnace outlet excess air coefficient α_l, can be controlled between 1.25-1.45, together with the heated surface flue air leakage, exhaust excessive air Coefficient α_s, can be controlled between 1.6-1.9.α_s greater than 2 is not economical because the exhaust loss q_2 and exhaust capacity, α_s is proportional to the larger α_s, q__2 relatively increase, the boiler thermal efficiency decreases. Small industries Boiler, currently one