Two-Stage Screw Air Compressor

Two-stage compression splits the work between two sets of rotors. The first stage compresses air to an intermediate pressure, cools it, then the second stage compresses it to the final pressure. This lowers discharge temperature and uses less energy per unit of air produced.

✓ Two-Stage Compression✓ 15% Lower Energy Use✓ Lower Discharge Temp✓ 22–250kW

Quick Specifications

Motor Power22–250 KW

Working Pressure7 / 8 / 10 / 13 Bar

Air Delivery3.8–38.0 m³/min

Compression StagesTwo

Discharge Temp≤ Ambient + 10°C

Drive TypeDirect Driven

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Why Choose This Product

Intercooler Between Stages

An aluminum plate-fin intercooler sits between the two air ends. It drops the air temperature by about 80% before the second compression.

Lower Bearing Load

Each rotor set handles a smaller pressure ratio. This reduces axial force on the bearings and extends their service life.

Cooler Discharge Air

Final discharge temperature stays close to ambient. The downstream dryer works more efficiently, and there is less condensate in the piping.

How It Works

In a single-stage compressor, air goes from atmospheric pressure to full working pressure in one pass. The compression ratio is high, and so is the heat generated.

The two-stage design uses a smaller first-stage rotor set to compress air to about 3 bar, then an intercooler brings the temperature down, and a larger second-stage rotor set finishes the compression to 7–13 bar.

Because each stage does less work and the intercooler removes heat between stages, the total energy input is lower. Measured specific energy is typically 12–15% better than a comparable single-stage machine at the same pressure.

Full Specifications

Parameter	Specification
Model Range	SL-22TS to SL-250TS
Motor Power	22–250 KW
Working Pressure	7 / 8 / 10 / 13 Bar
Free Air Delivery	3.8–38.0 m³/min
Compression	Two-Stage with Intercooler
Discharge Temperature	≤ Ambient + 10°C
Voltage	380V/50Hz/3Ph
Drive	Direct Coupled
Noise Level	68±2 ~ 76±2 dB(A)
Certification	CE, ISO9001

Industry Applications

Large Manufacturing

Steel Plants

Chemical Plants

Power Generation

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