Isentropic Efficiency of Compressors and PumpsĬompressors and pumps, when undergo a steady-flow process, consume power. H 2s = enthalpy of isentropic process at the exit H 2a = enthalpy of actual process at the exit The isentropic efficiency of turbine can then be written as In this case, theĮnergy balance of the turbine is reduced to With a process through a turbine is negligible compared with the enthalpy change of the process. Usually the kinetic and potential energies associated W a and w s can be obtained from the energy balance Of the turbine to the work output of the turbine if the turbine undergoesĪn isentropic process between the same inlet and exit pressures.

Isentropic efficiency of turbine is the ratio of the actual work output Output from a turbine is the work output. Isentropic process between the inlet and exit pressures. Recall, if the inlet is denoted by subscript 1 and exit is denoted byĮnergy balance for a one-inlet-one-exit control volume isįor an adiabatic turbine which undergoes a steady-flow process, its Process is chosen to serve as the idealized process. The device and its surroundings, most steady-flow devices are intended

The performance that would be achieved under idealized circumstancesįor the same inlet and exit states. It involves a comparison between the actual performance of a device and To measure the degree of degradation of energy in steady-flow devices. In engineering analysis, isentropic efficiency is a parameter Thermodynamics eBook: Isentropic Efficiency

Compressor 4.4.1 add outputs