Direct Driven Variable Speed Screw Compressor VSD With PLC Control
Efficiency of Variable Speed Screw Compressor
Efficiency is mainly decided by two parts of the air compressor. The first part is the host. It is easy for us to understand more air volume at cost of same power consumption means higher efficiency. The second part is electric motor. Permanent magnet motor and high efficient motor are common on current air compressors. Compared with ordinary electric motors, permanent magnet motors present higher efficient, higher power factor, and higher detent torch. Permanent magnet (synchronous) electric motors show the same detent torch as other synchronous electric motors. Without rotor windings, these permanent magnet motors show lower power consumption, because rotor excitation is unnecessary. However, permanent magnet motors need frequency converters which consume certain power. The test proves efficiency of low power permanent magnet motors remains higher than that of ordinary motors after adding frequency converters. We can use high efficient motors at high power stage to improve operation efficiency. On the other hand, characteristics of permanent magnet motors decide that they can maintain the same efficiency even at lower rotation speed. However, efficiency of ordinary motors declines with decreasing of rotation speed, showing a parabola curve
Variable Speed Screw Compressor Detailed Specifications:
| Model |
Power
(KW)
|
Pressure
(Bar)
|
Air flow
(m³/min)
|
Noise
dB(A)
|
Compression stages |
Outlet diameter
(Inch)
|
Dimension
(mm)
|
Weight
(kg)
|
| L |
W |
H |
| WZS-30EVA |
22 |
8 |
3.8 |
66±2 |
Single |
1¼” |
1380 |
850 |
1150 |
620 |
| 10 |
3.0 |
| WZS-40EVA |
30 |
8 |
5.0 |
68±2 |
Single |
1¾” |
1380 |
850 |
1150 |
680 |
| 10 |
4.4 |
| WZS-50EVA |
37 |
8 |
6.8 |
68±2 |
Single |
1½” |
1600 |
1000 |
1370 |
850 |
| 10 |
5.4 |
| WZS-60EVA |
45 |
8 |
8.0 |
68±2 |
Single |
1½” |
1600 |
1000 |
1370 |
880 |
| 10 |
6.8 |
| WZS-75EVA |
55 |
8 |
9.7 |
69±2 |
Single |
2” |
1700 |
1270 |
1500 |
1350 |
| 10 |
8.6 |
| WZS-100EVA |
75 |
8 |
13.2 |
70±2 |
Single |
2” |
2150 |
1300 |
1700 |
1650 |
| 10 |
11.6 |
| WZS-125EVA |
90 |
8 |
15.0 |
70±2 |
Single |
2” |
2150 |
1100 |
1500 |
1950 |
| 10 |
14.6 |
| WZS-150EVA |
110 |
8 |
19.0 |
71±2 |
Single |
DN65 |
2550 |
1650 |
1850 |
2600 |
| 10 |
17.0 |
| WZS-180EVA |
132 |
8 |
23.0 |
72±2 |
Single |
DN65 |
2550 |
1650 |
1850 |
2880 |
| 10 |
20.0 |
| WZS-200EVA |
160 |
8 |
26.5 |
75±2 |
Single |
DN80 |
2950 |
1800 |
1850 |
3200 |
| 10 |
22.5 |
Company profile:
Wan Beardsley Compression Machine (Shanghai) Co., Ltd is a medium and large-sized enterprise specialized in research, development and production of air compressors. By virtue of fruitful technological strength and advanced and complete production and testing equipments, this company pursues enterprise tenet “Achieve high quality with conscientiousness and create a centennial brand with quality”, strictly performs the commitment “be the most energy-efficient screw air compressor”, continuously seeks for sustainable improvement of products, process and system, and increasingly improves product properties, quality and reliability so as to make out R & D and manufacturing capacity step onto a new stair in manufacturing technology of air compressor. Our product quality has reached internally first-class level, and some products have been exported to and supported Southeast Asia and European and American markets.
BETTER SERVICE
1)Pre-sale services:
24 hours' online service for the prompt reply.
2)Sale services:
Our professional engineer team will provide you the satisfied scheme according to your demand.
3)After-sale services:
To offer the better service, we will do the satisfaction survey for each sale experance and regularly pay return visit to customers.
