The compression ratio in a compressor, which is typically used in gas turbine engines, is a critical parameter that characterizes the level of compression achieved by the compressor. It’s an important factor in assessing engine performance and efficiency. The compression ratio (CR) for a compressor is defined as the ratio of the outlet pressure to the inlet pressure.
The formula for compression ratio can be defined as:
Compression Ratio (CR) is a dimensionless parameter representing the ratio of pressures.
Outlet Pressure is the pressure of the air at the outlet of the compressor, typically measured in pascals (Pa), pounds per square inch (psi), or any appropriate pressure unit.
Inlet Pressure is the pressure of the air at the inlet of the compressor, measured in the same pressure units as the outlet pressure.