SDV Series Two-Stage Permanent Magnet Variable Frequency Screw Air Compressor

SDV Series Two-Stage Permanent Magnet Variable Frequency Screw Air Compressor

Energy Saving & Environmental Protection · More Reliable Performance

Energy Saving Analysis of Two-Stage Screw Compression
After the first stage of compression, air is cooled by enhanced oil injection, reducing the temperature for the second stage intake. The two-stage compression system uses a low pressure ratio to set the cycle pressure, significantly reducing the compression ratio per stage compared to single-stage compression. This results in a drastic decrease in cyclic compression work. Under the same power input, two-stage compression can increase output by up to 15% compared to single-stage compression, achieving 15% energy savings.

Two-Stage Compression Process

1. Air enters the first stage compression through an air filter, where it is mixed with a small amount of lubricating oil.

2. The mixed gas is compressed to intermediate pressure and enters the cooling passage, contacting a large amount of oil mist to significantly reduce temperature.

3. The cooled compressed air enters the second stage rotor for secondary compression, completing the process efficiently.

4. Finally, the compressed air is discharged through the exhaust flange.

Features of High-Efficiency Rotor Host

• High-efficiency rotor design

• Low speed, high reliability

• High efficiency, excellent energy savings

• Fast response speed

• 10–50 Hz speed range

• Significant energy efficiency

New Generation High-Efficiency Two-Stage Screw Air End

• Over 20 precision manufacturing processes

• Improved machining accuracy for high efficiency and energy savings

• High efficiency, low noise, low vibration, high reliability

• Compression process carried out in two separate stages

• Increases compression efficiency by 15% compared to single-stage under full load

Technical Parameters Table