When identifying a compressor, what is the maximum compression ratio for a screw compressor?

The maximum compression ratio for a screw compressor can indeed go up to 20:1. These compressors are designed for efficient handling of gases and can compress high volumes while maintaining high efficiency. The screw compressor's two interlocking rotors allow for a continuous flow of the gas, which contributes to its ability to achieve higher compression ratios compared to other types like reciprocating compressors.

Higher compression ratios enable screw compressors to effectively manage various applications, such as in refrigeration and air-conditioning systems, where a significant rise in pressure is required. This flexibility makes them quite beneficial in industrial settings, allowing for efficient operation under different load conditions. Understanding this characteristic is essential for selecting the right type of compressor for an application and comprehending the operational capabilities of screw compressors in comparison to others.