What component does a screw compressor use to compress gas?

A screw compressor utilizes two helical screws, commonly referred to as rotors, to compress gas. As the rotors turn, the gas is trapped in the spaces between the screws and is progressively compressed as it moves along the rotors' length. This design enables a continuous flow of gas, making screw compressors highly efficient for applications requiring constant pressure and volume.

The unique advantage of screw compressors lies in their ability to provide smooth and consistent compression, which is essential in many HVAC and refrigeration applications. The interlocking threads of the screws reduce pulsation and vibration, enhancing operational stability.

In contrast, rotating blades, piston cylinders, or centrifugal fans do not operate on the same principle as screw compressors. Rotary blade systems typically rely on blades to move air, while piston cylinders use reciprocating motion to compress gas. Centrifugal fans function by converting rotational energy into kinetic energy to increase airflow, but they do not compress gas in the same manner as a screw compressor. Thus, the screw design specifically addresses the needs of gas compression.