What is the practical maximum compression ratio for a rotary screw compressor?

The practical maximum compression ratio for a rotary screw compressor is generally around 20:1. This is due to the design and operational characteristics of rotary screw compressors, which allow for efficient compression within this range. Achieving a compression ratio beyond 20:1 can lead to inefficiencies and increased wear on the system components, as the thermal and mechanical stresses can rise significantly.

At compression ratios greater than 20:1, the performance of the compressor may diminish, leading to potential overheating and other operational challenges. It's essential for users to remain within this optimal range to ensure reliable and efficient operation. Understanding these limits helps in selecting the right equipment and maintaining its longevity while achieving desired performance.