Ejector Design Calculation Software Free Vacuum Units Request for Software from Graham Corporation Graham Corporation Vacworks II is a selection software suite developed by Graham engineers that enables you to select ejector systems or ejectors in combination with liquid ring vacuum pumps. This paper proposes a 1-D thermodynamic model for determining the critical pressure ratio, the mixing efficiency and all the dimensions of an optimum ejector providing the highest possible compression ratio for fixed inlet conditions and mass flowrates of the motive and suction fluids. Jet Pump (ejector/eductor) Sizing and Rating (fluids.jet_pump).Įjector design and performance prediction. Note the typical shape, with a peak efficiency of around 35%. Request for Software from Graham Corporation.Įjector efficiency can be calculated from Figure 2 shows a typical efficiency and performance curve for a jet pump, as a function of secondary flow rate.
Analytical expressions for irreversible flow of primary, secondary fluids are given.
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