How Does a Screw Air Compressor Work?

Learn the insides of a screw air compressor and how it works to create compressed air

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Learn How a Screw Air Compressor Works

A rotary screw air compressor is a type of air compressor which uses a rotary-type positive mechanism. Screw compressors can commonly be found where large volumes of high-pressure air are in need. Much like piston compressors, the screw air compressor is a ‘positive displacement’ compressor. To find out more about screw air compressors and how they can benefit your business click here.


Inside the Screw Air Compressor

Two meshing helical screws can be found inside the compressor element, these are known as rotors. The rotors turn in opposite directions to compress the air. The rotors have been specially designed to ensure optimal efficiency and performance. The two rotors consist of one ‘male’ rotor and one ‘female’ rotor.

Speed Optimisation

To minimise mechanical losses and volumetric losses, the speed of the rotors is optimised at a certain level. Mechanical losses can be due to heat at very high speed, while volumetric losses can be due to very slow speed. Our rotary air compressors are available as fixed speed or variable speed, to fit your compressed air needs and demands.

How It Works

The screw air compressor traps ambient air between two meshed rotors, as this trapped air moves through the rotors the volume is reduced. This increases the pressure and the result is high quality compressed air which can be used for a wide range of applications.  Power is required for the compression and is usually supplied by an electric motor.

ALUP Screw Air Compressors

We offer a range of rotary screw compressors here at ALUP to ensure that no matter the production we have the right fit for you. Our innovative screw air compressors will give you the peace of mind when it comes to quality compressed air. We are your partners in compressed air and will follow your compressor journey from beginning to end.