变频调速技术通过改变电动机工作电源频率调节电机转速，消耗的电能随风量大小而变，具有显著的节能效果。
By using the frequency and speed modulation technology, the electricity consumed will vary with the amount of the wind, thus a remarkable energy-saving result is achieved.
风量调节阀系阻性部件，存在较大的压头损失，须消耗大量送风能量。
The valve is an impeding part with larger pressure head loss and a lot of discharge energy consumed.
利用钢卷退火温度曲线以及煤气和空气消耗量曲线，得到了单台罩式炉退火过程中的抽风量变化曲线，在此基础上，得到了系统抽风量。
According to the curve of rolled coil annealing temperature, the curve of gas and air consumption, the air volume for one batch annealing furnace and discharge flue gas system are obtained.
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