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Mastered the use of efficiency centrifugal fan in order to have an overall grasp of the fan, so as to know what can improve the efficiency of centrifugal fans, centrifugal fans, only improves the efficiency in order to achieve better results the effect of improving environmental quality will be bigger, we have only to master the method to determine the efficiency of centrifugal fan can be adjusted after maintenance in accordance with the present situation.
Performance testing is an essential part of the fan, the different types and models for the fans, the way the test has also been distinguished for centrifugal fans, the completion of a such a testing process is very complex, and export pipeline centrifugal fan at each Drilling a measured static pressure centrifugal fan and export. According to estimate the efficiency of the fan static pressure centrifugal fan. This method is simple, does not affect production, but requires specialized knowledge of centrifugal fan.
Some centrifugal fan is installed damper function, for such centrifugal fan in regulating throttle opening less than 95%, the centrifugal fan will run at inefficient state. Damper is not fully open, otherwise it will create centrifugal fan inlet flow inhomogeneity, thus reducing the efficiency of the use of pneumatic duct machine, and then that would be a fan of a certain loss of pressure to flow 100,000 cubic meters centrifugal fan meters per hour basis, approximately every 100Pa pressure loss 4KW motor power.
In addition to the above two conditions, some wind opportunity to choose to install the efficient use of hydraulic couplers adjust fan, mechanical coupling loss at rated speed is 5%, while in 75% of rated speed mechanical losses of up to 28% , can be seen from this data, hydraulic coupling fans not only did not help improve the efficiency, but also greatly reduces the effect of fan use of ventilation has hindered role.
In summary, the centrifugal fan in order to achieve better results, but also need to adjust the fan in some way to test the effects of different adjustment method chosen is to produce a different fan.