News
Zhejiang Yitong Electromechanical Co., Ltd.
07
2023
-
11
The efficiency of the centrifugal fan is generally how much
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The efficiency of 2. centrifugal fan is generally how much
The motor efficiency of the centrifugal fan is generally 50% -90%, and the larger the fan motor efficiency is higher. The blowing efficiency of the fan is estimated to be 30%-80%, that is, 30% - 80% of the mechanical energy generated by the motor can be converted into wind energy.
The methods to improve the efficiency of centrifugal fans are: 1 fan model: the efficient optimization of fan model is one of the important reasons to improve the efficiency of the fan. The type line of impeller cover and blade is very important to the efficiency of the fan, and the reasonable and efficient blade type will affect the efficiency of the fan. Through the adjustment of the inlet and outlet angle of the blade, the optimization of the wheel cover line, the optimization of the air inlet flow channel, etc., the efficiency of the fan is improved. 2. Matching degree of performance parameters: The fan is working in the system. If the air volume and air pressure do not match the system, the operating efficiency of the fan will be low. The advanced CFD simulation technology can be used to select the high-efficiency fan with the operation efficiency point and the system performance, so that the high-efficiency operation area of the fan is matched with the pipe network system, and the operation efficiency of the modified fan is higher.
3, pipe network optimization: if the configuration of the pipe network is not appropriate, the fan in operation will reduce the efficiency of operation due to the increase of Yang, resulting in increased energy consumption. The pipe network design should be reasonable to avoid the generation of spoiler. In order to reduce the air flow in the fan in and out of the pipeline, the fan inlet and outlet pipe design is reasonable, reduce the elbow, the diameter design is reasonable, so as to improve the operation efficiency of the fan.
4. Adjustment mode: During the operation of the fan, the actual resistance of the system will inevitably deviate from the theoretical resistance. Therefore, it is necessary to adjust the working point of the fan to apply the actual resistance needs of the system. The adjustment method of the fan generally includes the adjustment of the inlet baffle and the variable speed adjustment. The resistance loss caused by the adjustment of the inlet baffle is large, which easily leads to the low efficiency of the fan. By adjusting the speed of the fan by the variable frequency motor or the permanent magnet motor, the air volume of the fan can be adjusted, which is more suitable for the pipe network system and achieves the effect of reducing the energy consumption of the fan.
News
2023-11-07
2023-11-07
2023-11-07
2023-11-07
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