螺杆空压机选型时考虑的因素很多，必须照顾到最高耗气量并考虑一定的余量，但是日常运行时，空气压缩机并非总是在额定排气工况下。据统计，在中国空气压缩机的平均负载只有额定容积流量的79%左右，可以看出压缩机选型时需要考虑额定负载工况和部分负载工况的功耗指标。
There are many factors to be considered in the selection of screw air compressor, which must take into account the maximum air consumption and a certain margin, but in daily operation, the air compressor is not always in the rated exhaust condition. According to statistics, the average load of air compressor in China is only about 79% of the rated volume flow. It can be seen that the power consumption index of rated load condition and partial load condition should be considered when selecting the compressor.
所有的螺杆空压机均有排气量调节功能，只是实现的措施有不同。常见的方式有ON/OFF加载/卸载调节、吸气节流、电机变频、滑阀变容等，这些调节方式也可以灵活地组合使用来优化设计。
All screw air compressors have the function of air displacement adjustment, but the measures are different. The common methods include on / off loading / unloading adjustment, suction throttling, motor frequency conversion, slide valve volume change, etc. These adjustment methods can also be flexibly combined to optimize the design.
在压缩机主机能效一定的情况下，只能从压缩机整机上进行优化控制方式达到进一步节能的目的，从而在空气压缩机的应用领域中实际达到综合节能效果。螺杆空压机的应用范围比较广泛，很难找到适合所有场合并完全有效的控制方式，需要河北立体车库 消防报警器塑料配件 电缆接地箱 电缆保护接地箱 塑料土工格栅 消弧线圈装置 根据实际应用情况综合分析，以便选择对应合适的控制方式
Under the condition that the energy efficiency of the main engine of the compressor is certain, we can only optimize the control mode from the whole compressor to achieve the purpose of further energy saving, so as to achieve the comprehensive energy saving effect in the application field of air compressor. Screw air compressor has a wide range of applications, so it is difficult to find a completely effective control mode suitable for all fields. It is necessary to make a comprehensive analysis according to the actual application in order to select the appropriate control mode