Six principles of fume purification equipment of fan selection:

　　1、山东通风91在线视频观看加工计算管网阻力，管网阻力包括局部阻力及沿程阻力。 A、局部阻力包括：变径管、弯头、进风口、出风口等阻力 B、沿程阻力：直管的阻力;

　　1, calculate pipe network resistance, pipe network resistance including local resistance and along resistance. A, local resistance include: variable pipe, elbow, inlet, outlet and other resistance B, along the resistance: straight pipe resistance;

　　2、根据管网阻力，加上设备阻力，再加15%的系数即为风机的全压。注：风机风量=设备处理风量;

　　2, according to the pipe network resistance, plus equipment resistance, plus 15% safety factor, that is the total pressure of the fan. Note: Fan volume = equipment handling air volume;

　　3、根据风机的全压、风量，考虑风机的比噪声级，在同参数条件下，选择比噪声级低的风机可以大大减少噪声;

　　3, according to the fan's total pressure and air volume, considering the specific noise level of fan, under the same parameter condition, the fan with lower noise level can reduce the noise greatly;

　　4、在选择风机时，以三相四线制为佳选择，如用户无三相四线制电源，则在风机和设备选型时请注意说明;

　　4, in the choice of fan, the three-phase four wire system is the best choice, such as the user without three-phase four wire power supply, in the fan and equipment selection, please note;

　　5、单台处理风量≥8000m3/h，必须选用三相四线制风机;

　　5, a single volume is more than 8000m3/h, must use the three-phase four wire fan;

　　6、风机应有独立的电源开关。

　　6. Fan should have independent power switch.

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