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For applications requiring more efficient operation to save energy,Jufeng offers a full line of variable speed drive screw compressors from 7hp to 350hp.

Features and Benefits of Variable Speed Screw Air Compressor
1.The inverter on a variable speed drive is capable of adjusting the screw air compressor speed to correspond with the air requirements at a given time.
2.A variable speed driven screw air compressor is more effective when air demand is fluctuating significantly and when the compressor operates at less than 70% of full capacity. The variable speed drive system will result in energy savings and extend the compressor life.
3.During the startup process of a variable speed screw air compressor,the motor will run at its lowest ramp up time in order eliminate any current draw spikes.
4.Jufeng variable speed screw air compressors are capable of running at full capacity to match the high demand time and also slow down to lowest capacity depending on the application,sizing and air receiver volume.
5.The intergraded inverters on JUFENG screw air compressor units are equipped with load reactors on 380 volt and load/line reactor on 420 voit systems.This prevents the variable speed drive from noisiness tripping due to the unbalanced power supply.
6.The JUFENG variable speed screw air compressor will maintain optimum pressure within one PSI and this allows setting the operating pressure 20% lower compared to load/off load systems.The reduction in operating pressure resuits in a significant energy saving.
7.The JUFENG variable speed driven screw air compressor unit is equipped with a controller which has the capability of communicating with two other air compressors with a similar controller by adding the optional program.The controller is manufactured under ISO9001 quality management system standard.

Cost Comparison The Guangzhou Jufeng VSD screw air compressor can change the motor RPM precisely according to the air consumption under stable discharge pressure.The compressor only delivers the required air,and only consumers the energy of necessary compressed air.That’s why the VSD type screw air compressor can save energy during the whole set machine operation.The cost of saving energy is much higher than the cost of machine itself.

Start and Operation The figure shows a comparison of several types of start up.We can see that the VSD air compressor is slowly accelerating started,more stable than the soft-start compressor,completely avoiding the current peak.Variable speed screw air compressor is ideal for use in areas lacking of electricity.

Electricity Consumption Comparison The figure shows the energy consumption comparison between the general air compressor and VSD air compressor. The VSD screw air compressor changes the rotating speed according to air consumption and balance the air supply and air usage.This allows the variable speed screw air compressor to save more than 35% energy compared to a normal compressor.VSD type compressor can effectively prevent pressure loss due to its stable pressure supply,which also contributes to energy saving.

Electricity Saving Result According to the research between the VSD screw air compressor and a normal screw air compressor,there are two fields which can display the result of energy saving,the loss of no-loading and loss of fluctuating pressure.For example,for a 55KW screw air compressor,70% air delivery in a year,the VSD type can save about 80000KWH energy.The cost of VSD can be taken back within two years.

We are a professional variable speed screw air compressor manufacturer and supplier based in China.We also provide direct drive screw air compressor,oil free silent air compressor,high pressure air compressor,and much more.