In a multistage compressor, how do the stages compare in volume?

In a multistage compressor, each stage is designed to operate under similar conditions to effectively manage the compression process. As a result, the stages are typically designed to be identical in terms of volume. This uniformity is crucial for maintaining balanced performance across the compressor, as each stage compresses the same volume of gas to successive higher pressures.

Using identical volumes allows for a more consistent and efficient operation, ensuring that the pressure and flow are maintained uniformly throughout the system. This design approach minimizes issues such as uneven wear or performance drops that could occur if the stages were of varying volumes. Thus, having each stage identical in volume is essential for the effective operation of a multistage compressor.