A rotary screw air-end or element has twin rotors, which include male and female parts rotating in opposite directions. Air fills the space between the rotors and, as they rotate, the volume between them and the surrounding housing decreases, squeezing or compressing the air into a smaller space. Rotary screw air compressors are a type of rotary volume compressor and thanks to their reliability, long lifetime and versatility, they are widely used in a lot of different industries. Compared to piston compressors, they are overall more efficient and flexible.
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. Oil flooded screw compressors are used in a wide variety of applications including air compression, gas refrigeration, hydrocarbon processing and power utilization from low-grade heat sources. They are good energy conservers – Rotary screw compressors are generally energy efficient, and they generate less heat than normal air compressors. They consume less oil than other oil flooded air compressors. In addition, they have minimum oil carryovers.
