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Institute of Turbomachinery and Fluid Dynamics
Logo Leibniz Universität Hannover
Institute of Turbomachinery and Fluid Dynamics
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Efficiencies

This online-tool illustrates the definition of the isentropic and the polytropic efficiency of turbines and compressors using the enthalpy-entropy (h-s) diagram. Particular focus lies on the demonstration ot ghe influence of the pressure ratio on the different efficiency definitions. The physical background of this realtion is summarized in this  document (German).