Ratio between measured shaft power and the adiabatic compression power, referring to measured mass flow. Adiabatic efficiency is function of type of compressor, rpm, volumetric flow, and adiabatic head.
Adiabatic efficiency is function of type of compressor, rpm, volumetric flow, and adiabatic head. We can determine adiabatic efficiency by using figure below.
In the adiabatic process there is constant heat energy and in the isentropic process there is constant entropy. Therefore the adiabatic process is considered to be an irreversible process. The isentropic process is a special case of an adiabatic process.
(See also Isentropic efficiency)