When using screw air compressors in daily life, many of our customers are not clear about the operation process of variable frequency screw air compressors. Let me briefly talk about it with you:
1. The inverter itself consumes 3% of power. When the motor deviates from the rated power and rated speed, the efficiency is significantly reduced. When the speed of the screw air compressor deviates from the rated speed, the oil-gas mixing ratio is destroyed and the efficiency is also significantly reduced. Therefore, when using a variable frequency screw air compressor, although the gas output is continuously equal to the gas consumption of the pipeline network, the power used to produce each cubic meter of compressed air has increased. In other words, under continuous loading conditions, variable frequency screw air compressors are not energy-saving.
2. In most cases of screw air compressor use, the gas consumption of the pipeline network is constantly changing, and the gas output of the compressor cannot be constantly equal to the gas consumption of the pipeline network. When the pipeline network pressure is equal to the set value, the screw air compressor enters the no-load state. The screw air compressor consumes 30% to 40% of the rated power of the motor when idling, so the efficiency of the screw air compressor is low when idling. Reducing the idling time or preventing the screw compressor from entering the idling state has a certain energy-saving effect.
3. The variable frequency screw air compressor can effectively reduce the idling time or prevent the screw air compressor from entering the idling state, so when the rated gas output of the compressor is greater than the gas consumption of the pipeline network, the variable frequency screw air compressor has a certain energy-saving effect.
4. The variable frequency screw air compressor is better for stabilizing the pipeline network pressure, and can stabilize the pipeline network pressure within the range of ±0.01MPa-this is difficult to achieve with other flow control methods.