Permanent Magnet Frequency Conversion 20HP Rotary Screw Drive Air Compressor

Quick Details

Main machine: LG15EL-BD-B (SKK)                                     Motor:Y2-132S2 (Jiangtian/Qingjiang)

Intake valve: KVPB02501 (Hongxing)                                    Minimum pressure valve:KPVK0200450 (Hongxing)

Solenoid valve:Intake valve built-in                                        Coupling:PSEC0283-030-038(Jichao)

Safety valve:DN08-A28X-16T-0.88MPa (Fuyu)                      Axial flow fan:300YWF-N-C-01 (Mahr)

Air filter:56 001 106 100J (Kerry)                                            Oil filter:66 094 172EF (Kerry)

Air Oil separation core:55110 165100 (Kerry)                         Inverter:NZ200T-7.5 (Zhongchen)

Electronic control:cocontactor(Schneider) PLC controller(Silk)          Screw group:5:6 toothed rotor

Compress mode:Continuous, single stage                             Discharge pressure:P2=0.65-1.0MPa

Cooling method:Fan cooling                                                   Lubricating oil capacity:About 6.5 liters

Compressed air outlet temperature:10℃ ~ 15℃ higher than the ambient temperature

Motor speed:N=2930r/min                                                      Working weight:About 200 KG

Air temperature limitation:0℃~45℃                                        Noise:74dB(A)                                                

Oil consumption:The exhaust oil content is less than 3PP

Differences between Silk Compressors BMVF variable frequency screw air compressor and external variable frequency drive screw air compressor
Ordinary screw compressors can regulate the motor's rotation speed through external inverters to regulate the air discharge volume in order that air volume produced matches that of used and hence achieves energy efficiency. However ordinary screw air compressors are built with motors with mains rated rotating speed, rated power and rated efficiency, whereas external inverters would force the air compressor's motor to deviate from its mains rated rotating speed. Once the ordinary motor deviates from its mains rated rotating speed, its efficiency will be reduced significantly, and the greater the deviation the more significantly the efficiency will be declined. Withing all its rotating speed range, the BMVF variable frequency screw air compressor is able to maintain extremely high motor efficiency, thus giving it superior energy-saving effect over ordinary screw air compressor with external inverter. In addition, the regulation range of external inverters for ordinary screw compressor is from 40% to 100%. In other words, when
the working condition deviates in excess of 60%, the external inverter will not be able to regulate the motor's rotating speed. In contrast, Silk Compressor's BMVF variable frequency air compressor has a operating speed range of 20-100%, which means that even in the case of 80% deviation from working conditions, Silk Compressor's BMVF variable frequency air compressor can still function efficiently.
Table of Comparison for Energy Efficiency of 37kW screw air compressor
Silk BMVF variable frequency screw compressor Annual power consumption: 183.520kW.
Ordinary mains frequency screw compressor Annual power consumption: 281,200kW.
Ordinary variable frequency screw compressor Annual power consumption: 201,280kW.
Screw air compressor with inverter Annual power consumption: 236,800kW.
Take 37kW screw air compressor as an example, all efficiency values were recorded during experiamental tested and the annual power usage calculation were based on average operating time of 8,000 hours per annum: Silk BMVF screw air compressor compared with external variable frequency inverter screw air compressor.
Energy-saving per annum: 236,800-183,520=53,280 kW.

A high-effciency PM variable frequency screw air compressor has advantages in the following three areas:

The first is to have a highly effcient screw compression unit;

Secondly to have a high-effcient PM synchronous motor;

Thirdly to have first-clsaa PM variable control technology.

BOREAS PM variable frequency air compressor possessess significant technical advances in the following three areas.

Addition:

Compared to the ordinary PM variable frequency screw air compressor,BOREAS PM variable frequency screw air compressors have obvious technological advantages in the three aspects including screw compression unot efficiency,motor efficiency,dan control technology.