The basic principle of a screw compressor is as th...

The basic principle of a screw compressor is as the male and female rotors are rotating in opposite direction they draw air in between them. As the air progresses along the rotors the air is compressed as the volume space between the rotors decreases, hence creating compressed air that is displace to the outlet. Rotary screw air compressors operate by trapping air between two meshed rotors and reducing the volume of that trapped air as it moves down through the rotors. This reduction in volume results in compressed air, which can then be used to power air tools, inflate tires, or in numerous other applications. The speed of the rotors is optimized at a certain level to minimize mechanical loses (due to heat at very high speed) and volumetric losses (air losses due to very low speed). Unlike a piston compressor a screw compressor generally doesn’t have valves and has no mechanical force that causes unbalance, this means that it can work at a high speed combined with large flow rates and still be contained within a small exterior.